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2 total messages Started by Bradley Hards Wed, 26 Aug 1992 14:26
comp.dsp FAQ [1 of 2]
#714
Author: Bradley Hards
Date: Wed, 26 Aug 1992 14:26
472 lines
23035 bytes
Archive-name: dsp-faq/part1
Last-modified: Thu Aug 27 1992
Version: 0.2


Here is the third  release of the comp.dsp  FAQ. Rather obviously it  has a
long way to  go. I am eagerly seeking  out  information on all topics, from
the best layout (e.g. should chips and prototype boards be another FAQ?) to
a  good annotated list  of DSP  articles and reference books.  Please email
your suggestions to hards4@ee.adfa.oz.au. My meta-comments are all in curly
braces {like this}

You can ftp the very latest  version of this  FAQ from: evans.ee.adfa.oz.au
(131.236.30.24) in pub/dsp/dsp-faq.help

I am most grateful to the following contributors who added material to this
version of the FAQ:-
John Lazzaro      lazzaro@boom.CS.Berkeley.EDU 
Malachy Devlin    madmal@spd.eee.strathclyde.ac.uk
Paul Russell      paulr@syma.sussex.ac.uk
Pete Janzow       pjanzow@prenhall.com
Greg Koker        greg.koker@analog.com
Greg Smart        rcogs@citri.edu.au

Get your name here - contribute something!
===========================================================================
Questions answered in this FAQ:
0.  What is comp.dsp?
1.  Summary of DSP books and significant research articles.
2.  Where can I get some free/cheap software for dsp?
3.  Where can I get the Motorola DSP C compilers source?
4.  Where can I get a free compiler for the C30/C40 ?
5.  OK then, where can I pay money for a C30/C40 compiler ?
6.  Where can I get some algorithms?
7.  Yeah, but thats all in fortran and I only wanted some simple stuff for 
    my 56000... (Or where to ftp stuff from Motorola's BBS - Dr BuB)
8.  Where can I get the source for CELP ?
9.  How does pitch perception work, and how do I implement it on my DSP chip?
10. What are the available DSP chips and chip architectures?
11. What are the available DSP prototyping boards and manufacturers?
===========================================================================
0. What is comp.dsp?

Comp.dsp is a worldwide UseNet news group that is used to discuss various
aspects of digital signal processing. It is unmoderated, though we try to
keep the signal to noise ratio up :-). If you need to ask a question that
isn't in the FAQ, and can't figure out how to post, consult
news.newusers.questions.  Other relevant news groups are comp.compression,
sci.image.processing.

=========================================================================
1. Summary of DSP books and significant research articles.

(1) Bibles of DSP 
A.V. Oppenheim and R.W. Schafer, "Digital Signal Processing",
Prentice-Hall, Inc., Englewood Cliffs, N.J., 1975.

A.V. Oppenheim and R.W. Schafer, "Discrete-Time Signal Processing"
Prentice Hall, Englewood Cliffs, New Jersey 07632, 1989. ISBN 0-13-216292-X
This is an updated version of the original, with some old material deleted
and lots of new material added.

L.R. Rabiner & R.W. Schafer, "Digital Processing of Speech Signals"
Prentice Hall 1978 ISBN 0-13-213603-1

R. E. Crochiere & L. R. Rabiner, "Multirate Digital Signal Processing"
Prentice-Hall 1983. ISBN  0136051626
This book is the only real reference for filter banks and Multirate
systems, as opposed to being a tutorial




(2) Array signal processing
J.E. Hudson, "Adaptive Array Principles", IEE London and New York,
Peter Peregrinus Ltd. Stevenage, U.K., and New York, 1981.

R.A. Monzingo and T.W. Miller, "Introduction to Adaptive Arrays"
John Wiley and Sons, New York, 1980.

S. Haykin, J.H. Justice, N.L. Owsley, J.L. Yen, and A.C. Kak
"Array Signal Processing", Prentice-Hall, Inc., Englewood Cliffs, N.J., 1985.

B. Widrow and S.D. Stearns, "Adaptive Signal Processing", 
Prentice-Hall, Inc., Englewood Cliffs, N.J., 1985.

(3) Windowing articles.
>From: evans@eedsp.gatech.edu (Brian Evans)
  Perhaps the classic overview paper for discrete-time windows is
  "On the Use of Windows for Harmonic Analysis with the DFT, F. J. Harris, 
  IEEE Proceedings,  Jan 1978, pp 51--83 "
  It discusses some 15 different classes of windows including their
  spectral responses and the reasons for their development.

>From: bobb@vice.ICO.TEK.COM (Bob Beauchaine)
  "Some Novel Windows and a Concise Tutorial Comparison of Window
  Families", Nezih C. Geckinli & Davras Yavuz, IEEE Transactions on
  Acoustics, Speech, and Signal Processing, Vol. ASSP-26, No. 6,
  December 1978.
=======================================================================
2. Where can I get some free/cheap software for dsp?
>From: jbuck@galileo.berkeley.edu  (Joe Buck)
Gabriel is a hierarchical block diagram programming system for prototyping
signal processing systems on single or multiple processors.  It has an
optional graphical interface. Contact: Alan Kamas, aok@ohm.berkeley.edu
How to get it:
Anonymous ftp to copernicus.berkeley.edu, and retrieve gabriel-license.shar.
This is a shar file of licenses that you must sign and mail back to us (the
old-fashioned way) before we can give you the source.  Then we can tell you
the password for an account that will allow you to FTP Gabriel.

>From: evans@eedsp.gatech.edu (Brian Evans)
There was an entire session on this subject at ICASSP '92
chaired by Dr. Sally Wood and Dr. James McClellan.  It appears
in Volume 4 of the Proceedings pages 73-112.  There will be another
such session at ICASSP '93.

Sample of free (though possibly licensed and/or copyrighted) educational
software:

(1) Ptolemy--- block diagram simulator for DSP systems.
    Runs on Suns under X. Graphical interface. See ICASSP '92 session.
    Similar licensing system to gabriel package (see above)
    Contact: ptolemy-request@ohm.berkeley.edu

(2) Khoros--- block diagram simulator for image and video processing.
    Runs on Suns under X.  Graphical interface.  1-D SP supported.
    There is an entire Usenet news group for Khoros: comp.soft-sys.khoros
    Contact:  Univ. of New Mexico

(3) DSP Tutorials---  computer-aided instruction
    Runs on Suns under SunView.  Graphical interface.
    Contact:  Dr. Sally Wood of Santa Clara Univ.

Sample of public domain extensions to existing software:

(1) From the Matlab Users Group (Editor, hwilson@ua1vm.ua.edu)

    The MATLAB Digest is issued at irregular intervals based on the  number
    of  questions  and  software  items  contributed  by  users.   To  make
    submissions  to the digest, please send  to hwilson@ua1vm.ua.edu with a
    subject: "DIG" and description.

    For  the  Pacific,   try  netlib@draci.cs.uow.edu.au  located   at  the
    University of Wollongong, NSW, Australia.

    A plethora of toolboxes are available at FTP site: research.att.com
    (use netlib for the username)

    General index for the MATLAB User Group software library
    ----------------------------------------------------------
    Currently there are the following subdirectories:
    approximation      approximation theory
    archive            old MATLAB user group digests
    control            control theory
    dataanalysis       data analysis and statistics
    graphics           graphics programs
    integration        numerical integration
    linearalgebra      linear algebra utilities
    misc               miscellaneous
    ode                ordinary differential equations
    optimization       as the name says
    pde                partial differential equations
    rootfinding        zero-finding routines
    specialfunctions   special functions
    teaching           for classroom use
    tools              miscellaneous tools

    In order to get an index for a subdirectory (tools, say)
    send the message
        send index from MATLAB/tools
    to netlib@ornl.gov.

    In order to get some code, (unbundle in the `tools'
    directory, say), send the message
        send unbundle from MATLAB/tools
    to netlib@ornl.gov.

    FOR  STUDENTS: Prentice Hall has published  a student edition of matlab
    which contains a book and  set of disks for PCs and Macs.  The software
    is limited only in matrix size (32 x 32 matrix;  1024 elements) and  in
    its ability  to import or call  C or Fortran  subroutines.  On the plus
    side, it is able to run without a coprocessor (it will use one if it is
    present) and it includes a subset of the Signal Processing and Controls
    Toolboxes, The Signals and  Systems Toolbox,  which  provides for added
    functionality. Book only (about US$30): ISBN = 0138560064; Book + disk:
    (about US$50 ISBN=0-13-855974-0 for 3.5" or ISBN=0-13-855982-1 for 5.25
    Macintosh version:  ISBN=0-13-855990-2. There will be related books out
    by mid to late 1993 :  Computer Aided Signal Processing with MATLAB, by
    Burrus, Oppenheim, McClellan, Parks, Schafer, and Schussler; and Signal
    Processing : A Computer  Approach, by Etter. More books in this  MATLAB
    Curriculum Series are planned. For general info: matlab@prenhall.com

(2) Mathematica--- Signal Processing Packages (SPP) and Notebooks
    SPP  implements  1-D  symbolic convolution and 1-D/m-D linear  symbolic
    transforms   (showing  intermediate  results).   Interactive   tutorial
    Notebooks on analog filter design, DTFT, convolution, z-transform.
    Contact:   Brian Evans at evans@eedsp.gatech.edu 
    FTP site:  gauss.eedsp.gatech.edu (130.207.226.24)
               (different archive formats for different operating sys)

(3) Mathematica--- Controls Systems Packages (COSYPAK) and Notebooks
    follows the textbook "Modern Controls Theory" by Ogata.
    The packages are largely based on SPP (above).
    Contact:  Dr. Sreenath at sree@veda.esys.cwru.edu 
    FTP site: veda.esys.cwru.edu (129.22.40.9)

(4) Maple--- Linear systems toolbox
    Contact:  Tony Richardson  amr@egr.duke.edu
    FTP site:  cameron.egr.duke.edu  (pub/maple/linsys.tar.Z)

There are many course sequences being developed based on commercial
programs.  In this case, the extensions to the commercial programs
would come with the purchase of the textbooks, e.g.

(1) Matlab--- four-part DSP curriculum, including Stochastic SP
    Authored by Drs. McClellan, Parks, Burrus, and Schussler.
    See ICASSP '92 special session.
    Contact:  Dr. McClellan at mcclella@eedsp.gatech.edu
=======================================================================
3. Where can I get the Motorola DSP C compilers source?

There are  two separate  compiler sources. One is the port of gcc 1.40 done
by Andrew Sterian (ASTERIAN@BNR.CA) and the other  is a port of  gcc 1.37.1
done by Motorola and returned to the FSF. These may be portable to gcc2.x.x
with  some  effort  required.   Neither  of  these  compilers  includes  an
assembler, though a  publicly available assembler exists, thanks  to  Quinn
Jensen  (jensenq@qcj.icon.com).   The  current version  is  1.1, and  it is
posted to  alt.sources, so look for it on mirrors of this  newsgroup  (like
wuarchive.wustl.edu)
For more information on the Motorola compilers try contacting Jeff Enderwick
(jeff@dsp.sps.mot.com).

>From: Andrew (A.) Sterian <ASTERIAN@BNR.CA>
The source code for the Moto compiler is available on nic.funet.fi. 
My own DSP56K  port has bowed to  Motorola's version.  My DSP56156 port  is
still the only DSP56156 compiler around and I have just released an updated
version of it. Both this compiler and the previous incarnation are archived
on wuarchive.wustl.edu (in the usenet/alt.sources directory) amongst  other
places.
=======================================================================
4. Where can I get a free compiler for the C30/C40 ?

   Currently, you can't. {any corrections to this - anyone working on it?}
=======================================================================
5. OK then, where can I pay money for a C30/C40 compiler ?
   
TI has  a  C30/C40  compiler for C. Tartan  has an  ADA compiler.  Computer
Motion has a C++  compiler for C3x based on GNU  C++, but  it appears  they
haven't returned the deltas to FSF.
=======================================================================
6. Where can I get some algorithms?

These  archives  contain  things  such  as  matrix  operations,  FFT's  and
generally useful things like that, as opposed to complete applications.

(1) there is host ux1.cso.uiuc.edu - log in as anonymous, get the
    file  math/README. It summarises the contents of the archive.

(2) there is the netlib host which also serves some of this software via
    email. Try mail to netlib@ORNL.GOV with "send help" in the subject
    field.
    For Europe: 
        Internet:       netlib@nac.no
        EARN/BITNET:    netlib%nac.no@norunix.bitnet
        X.400:          s=netlib; o=nac; c=no;
        EUNET/uucp:     nac!netlib
    For the Pacific, try    
        netlib@draci.cs.uow.edu.au
     For background about netlib, see Jack J. Dongarra and Eric Grosse,
     Distribution of Mathematical Software Via Electronic Mail,
     Comm. ACM (1987) 30,403--407.
     
     A similar collection of statistical software is available from
           statlib@temper.stat.cmu.edu.

     The symbolic algebra system REDUCE is supported by
          reduce-netlib@rand.org.

(3) It may be possible to get an extensive set of fortran routines
produced by the Naval Surface Warfare Centre. { Any one got more data ?}

(?) if you don't know where to find what you're after, try archie.
=======================================================================
7. Yeah, but thats all in fortran and I only wanted some simple stuff for 
my 56000...

Firstly, not all of the above stuff is in fortran, some is in C, and you
could always use the f2c fortran to C compiler (use archie to locate the
nearest archive of f2c).

Alternatively, Dr BuB (the Motorola BBS) is mirrored on:
calvin.stanford.edu   (36.14.0.43)     in   /motorola
bode.ee.ualberta.ca   (129.128.16.96)  in   /pub/dos/motorola
nic.funet.fi          (128.214.6.100)  in   /pub/misc/motorola
doc.ic.ac.uk          (146.169.3.7)    in   
/computing/systems/motorola/digital-signal-processing/dr.bub.sources

Also try nic.funet.fi in /pub/ham/dsp for a lot of good stuff on 
communications uses, including some hardware
=======================================================================
8. Where can I get the source for CELP ?
From: jpcampb@afterlife.ncsc.mil (Joe Campbell)

The U.S. DoD's Federal-Standard-1016 based 4800 bps code excited linear
prediction voice coder version 3.2 (CELP 3.2) Fortran and C simulation
source codes are available for worldwide distribution at no charge (on
DOS diskettes, but configured to compile on Sun SPARC stations) from:

Bob Fenichel
National Communications System
Washington, D.C.  20305
1-703-692-2124
1-703-746-4960 (fax)

Example input and processed speech files, a technical information bulletin,
and the official standard "Federal Standard 1016, Telecommunications:
Analog to Digital Conversion of Radio Voice by 4,800 bit/second Code
Excited Linear Prediction (CELP)" are included at no charge.

The following article describes the Federal-Standard-1016 4.8-kbps CELP
coder:
Campbell, Joseph P. Jr., Thomas E. Tremain and Vanoy C. Welch, "The
Proposed Federal Standard 1016 4800 bps Voice Coder:  CELP," Speech
Technology Magazine, April/May 1990, p. 58-64.

The U.S. DoD's Federal-Standard-1015/NATO-STANAG-4198 based 2400 bps
linear prediction coder version 53 (LPC-10e v53) Fortran or C simulation
source codes are available on a limited basis upon written request to:
 
Tom Tremain
Department of Defense
Ft. Meade, MD  20755-6000
USA

The U.S. Federal Standard 1015 (NATO STANAG 4198) is described in:
Thomas E. Tremain, "The Government Standard Linear Predictive Coding
Algorithm:  LPC-10," Speech Technology Magazine, April 1982, p. 40-49.

Copies of the official standards FS 1015 and FS 1016 are available for
US$ 2.50 each from:
GSA Rm 6654
7th & D St SW
Washington, D.C.  20407
1-202-708-9205

Realtime DSP code for FS-1015 and FS-1016 is sold by:
John DellaMorte
DSP Software Engineering
165 Middlesex Tpk, Suite 206
Bedford, MA  01730
1-617-275-3733
1-617-275-4323 (fax)
dspse.bedford@channel1.com
 
DSP Software Engineering's FS-1016 code can run on a DSP Research's Tiger 30
or on Intellibit's AE2000 TMS320C31 based 3" by 2.5" card. See section 10
for more on these cards.

=======================================================================
9. How does pitch perception work, and how do I implement it on my DSP chip?

From:  Malcolm Slaney, Apple Computer, and John Lazzaro, UC Berkeley.
Pitch is officially defined as "That attribute of auditory sensation
in terms of which sounds may be ordered on a musical scale."  Several
good examples illustrating the subtleties of pitch perception are
included in the "Auditory Demonstrations CD" which is available from
the Acoustical Society of America, Woodbury, NY 10797 for $20.

A good general reference about the psychology of pitch perception is
the book
	"An Introduction to the Psychology of Hearing," by B. C. J.
	Moore, Academic Press, London, 1989. 
This book is available in paperback and makes a good desk reference.

An algorithm implementation that matches a large body of psychoacoustical
work, but which is computationally very intensive, is presented in the paper:
	Malcolm Slaney and Richard Lyon, "A Perceptual Pitch Detector," 
	Proceedings of the International Conference of Acoustics, Speech, 
	and Signal Processing, 1990, Albuquerque, New Mexico.

The definitive papers describing the use of such a perceptual pitch
detector as applied to the classical pitch literature is in:
	Ray Meddis and M. J. Hewitt. "Virtual pitch and phase
        sensitivity of a computer model of the auditory periphery. "
        Journal of the Acoustical Society of America 89 (6 1991): 2866-2682.
        and 2883-2894.

The current work that argues for a pure spectral method starts with the work
of Goldstein:
	J. Goldstein,  "An optimum processor theory for the 
	central formation of the pitch of complex tones," Journal
	of the Acoustical Society of America 54, 1496-1516, 1973.

Two approaches are worth considering if something approximating pitch
is appropriate.  The people at IRCAM have proposed a harmonic analysis
approach that can be implemented on a DSP
	Boris Doval and Xavier Rodet, "Estimation of Fundamental Frequency
	of Musical Sound Signals," Proceedings of the 1991 International
	Conference on Acoustics, Speech, and Signal Processing, Toronto,
	Volume 5, pp. 3657-3660.

The classic paper for time domain (peak picking) pitch algorithms is:
	B. Gold and L. Rabiner, "Parallel processing techniques for estimating
	pitch periods of speech in the time domain," Journal of the Acoustical
	Society of America, 46, pp 441-448, 1969.

Finally, a word of caution: Pitch is not single-valued.  We can hear a
sound and match it to several different pitches.  Imagine the number
of instruments in an orchestra, each with it's own pitch.  Even a
single sound can have more than one pitch.  See for example
Demonstration 27 from the ASA Auditory Demonstrations CD.
=======================================================================
10. What are the available DSP chips and chip architectures?

{ This is based on my woefully inadequate databook collection. Anyone want
  to add to this list?  Manufacturers want to submit anything? }

a. TMS320C1x (TI) family of low cost fixed-point DSP's; 16 bit data, 32 bit
registers; Various RAM&ROM configurations; 16 bit I/O bus, serial ports.

b. TMS320C25 (TI) 50MHz fixed-point DSP; 16 bit data, 32 bit registers;
12.5 MIPS@50MHz.

c. TMS320C30 (TI) 27/33/40 MHz floating point DSP; 32 bit floating point,
24  bit fixed point data, 40 bit  registers; DMA  controller; dual serial
ports; some support for multi-processor arrays.

d. TMS320C40 (TI) 40/50 MHz floating point DSP; extensive parallel processing
support through 6 buffered byte-wide 20 Mb/s links and 6 channel DMA; cache.

e. TMS320C50 (TI) enhanced TMS320C25 (double thoughput); low overhead looping;
10Kwords SRAM on chip.

f. DSP32C (AT&T) floating point DSP; 32bit floating point, 16/24 bit fixed
point data.

From: Greg Koker <greg.koker@analog.com>
g. ADSP2100 (Analog Devices) 32 and 50Mhz fixed point DSP, (8 MIPS,12.5MIPS).
16 Bit registers except for multiplyer-accumulate register which is 40 bits.
No on chip memory except for a 16 word instruction cache. 
   ADSP2101  Derived from ADSP2100, 16 bit registers except for the multiplier
accumulator which is 40 bits. Has 2kx24 instruction/data ram in program memory
space, 1Kx16 data ram in data memory space.  Adds memory, timer, serial ports 
etc to the 2100.  Fastest speed grade in production is 16.6Mhz=16.6MIPS. Other 
variants are : ADSP2102: Ram/rom version of 2101 where user selects how much of
the 2kx24 program memory is mask rom;
               ADSP2103: 3V version of the 2101
               ADSP2105: 10Mhz fixed point DSP with 1 serial port, timer
and 1kx24 instruction/data ram in program memory space, and 512 word data ram
in data memory space. This processor sells for US$9.90 in any quantity.
               ADSP2111: adds a 8/16bit host interface port.
               ADSP21msp50: ADSP2111 with an on chip a/d and d/a interface and
additional low power modes.
               ADSP2161: has 8Kx24 mask rom.
All of the processors (except the 2100) use a 1X instruction clock and use an
on chip PLL to generate an internal 4X clock.  All processor have an extended
harvard architecture which allows two data fetches and an instruction fetch
every cycle in parallel with an alu or mac operation.  All instructions
including accessing external memory can complete in 1 cycle.

h. DSP56001 (Motorola) 27 MHz fixed point DSP; 24 bit data, 56 bit accumulator;
Harvard architecture.

i. DSP96002 (Motorola) IEEE format floating point DSP; 32 bit data;
Harvard architecture.
=======================================================================
-- 

Please send email concerning this FAQ to hards4@ee.adfa.oz.au
Snail mail to : Brad Hards, Officers Mess, Australian Defence Force Academy,
Campbell ACT 2601, AUSTRALIA.
comp.dsp FAQ [2 of 2]
#715
Author: Bradley Hards
Date: Wed, 26 Aug 1992 14:26
642 lines
28864 bytes
Archive-name: dsp-faq/part2
Last-modified: Thu Aug 27 1992
Version: 0.2

11.  What are the available DSP prototyping boards and manufacturers?
{ Again we need much more information - preferably as in the following format }

This information was mainly supplied by
    Phil Lapsley   (phil@rivetjoint.lapcon.com)
    David Pepper   (dpepper@thumper.bellcore.com)
    Malachy Devlin (madmal@spd.eee.strathclyde.ac.uk)
    Paul Russell   (paulr@syma.sussex.ac.uk)
    Steve Shaehnic                  (vigra!calvin!steve@UCSD.EDU)
and by some of the vendor catalogues I had.
This information is in no way  definitive, and much of the  information may
well be out of date or simply wrong.
----------------------------------------------------------------------------
Board Name: MM-96
Type of Board: Two processor DSP96002 IBM PC AT card
Company: Ariel Corp (908) 249-2900
Features:  DSP Processor: 2x DSP96002
----------------------------------------------------------------------------
Board Name: DSP-16+
Type of Board: TMS320C25 IBM PC AT card
Company: Ariel Corp (908) 249-2900 
Features:  DSP Processor: 40 MHz 320C25
	   A/D -- D/A:  two channel 16 bit 50 kHz A/D, D/A.
----------------------------------------------------------------------------
Board Name: DSP-56
Type of Board: DSP56001 IBM PC AT card
Company: Ariel Corp (908) 249-2900
Features:  DSP Processor: 27 (?) MHz 56k
	   A/D -- D/A:  dual 16 bit 100 kHz A/D, D/A DSPnet parallel
           interface, SCSI interface, async serial interface.
----------------------------------------------------------------------------
Board Name: DSP-32C
Type of Board: AT&T DSP-32C IBM PC-AT card
Company: Ariel Corp (908) 249-2900
Features:  DSP Processor: DSP-32C
----------------------------------------------------------------------------
Board Name: PC-56
Type of Board: DSP56001 IBM PC AT card
Company: Ariel Corp (908) 249-2900
Features:  DSP Processor:27 MHz 56k with 16K or 64K words RAM
	   A/D -- D/A:optional 14 bit single channel analog I/O 
----------------------------------------------------------------------------
Board Name: Model 250 DSP board
Type of Board: TMS320C25 board for IBM PC AT
Company: Dalanco Spry 
Features:  DSP Processor: TMS320C25  40 MHz, 4K words program RAM(64K optional)
                          32K words data RAM (128K optional),
	   A/D -- D/A:  12 bit 300 kHz A/D, dual 12 bit 250 kHz D/A
                        16 bit expansion bus, serial port
Comments: Program RAM is zero-wait state, Data RAM is one wait state.
----------------------------------------------------------------------------
Board Name: Tiger 30
Type of Board: TMS320C30 board for IBM PC
Company: DSP Research
Features:  DSP Processor: TMS320C30
----------------------------------------------------------------------------
Board Name: Cheetah mother board 
Type of Board: DSP96002/dual DSP56001 IBM PC AT card
Company: Atlanta Signal Processors, Inc. (ASPI) (404) 892-7265
Features:  DSP Processor: DSP96002 33 MHz, 256k-2M bytes RAM
                          dual DSP56001s 20 MHz, serial interfaces.
----------------------------------------------------------------------------
Board Name: Banshee mother board
Type of Board: TMS320C30 IBM PC AT card 
Company: Atlanta Signal Processors, Inc. (ASPI) (404) 892-7265 
Features:  DSP Processor: TMS320C30 33 MHz, 256k-512k bytes RAM 
Comments: Optional boards allow multiple Banshee boards to be connected, 
provide extra memory, and provide dual 16 bit 200 kHz A/D, D/A 
----------------------------------------------------------------------------
Board Name: Chimera system
Type of Board: TMS320C25 or TMS320C26 IBM PC AT card
Company: Atlanta Signal Processors, Inc. (ASPI) (404) 892-7265
Features:  DSP Processor: TMS320C25/TMS320C26, 40/50 MHz, 4K-64K words RAM
	   A/D -- D/A: 
Comments: A daughter board providing dual 16 bit 200 kHz A/D, D/A is optional
----------------------------------------------------------------------------
Type of Board: DSP56001 board for IBM PC
Company: Motorola Corp. (512) 891-2030
Features:  DSP Processor: DSP56001
Comments: Motorola produce DSP56000 assembler, linker, simulator, C compiler
----------------------------------------------------------------------------
Type of Board: DSP96002 board for IBM PC
Company: Motorola Corp. (512) 891-2030
Features:  DSP Processor: DSP96002
Comments: Motorola produce DSP96000 assembler, linker, simulator, C compiler
----------------------------------------------------------------------------
Type of Board: PC board with TMS32010
Company: Natural Microsystems Corp. (800)533-6120
Features:  DSP Processor: TMS32010
----------------------------------------------------------------------------
Board Name: DSP96002 System board
Type of Board:  DSP96002 IBM PC card
Company: Loughborough Sound Images
Features:  DSP Processor: DSP96002 33 MHz , 64Kword 0ws RAM + 256Kword 1ws RAM
	   A/D -- D/A: dual 16 bit 100 kHz A/D converters (Motorola 56ADC16s)
----------------------------------------------------------------------------
Board Name: DSP56001 System board
Type of Board: DSP56001 IBM PC card
Company: Loughborough Sound Images
Features:  DSP Processor: DSP56001 20Mhz 192K words RAM
	   A/D -- D/A: two 16 bit 153 kHz A/D w/ 3rd order analog filters,
                       two 16 bit D/A  w/ 3rd order analog filters,
                       telephony codec
Comments:"DSP56001 Processor board" is same, but without analog I/O
----------------------------------------------------------------------------
Board Name: Dual DSP56001 Processor board
Type of Board: two processor DSP56001 IBM PC card
Company: Loughborough Sound Images
Features:  DSP Processor: 27 MHz 56k, 32K words RAM per CPU
           Interface : Two ADS ports, each processor has RS422 or SLD ISDN
Comments:  2Kx16 bit dual port RAM between host and each processor,
           2Kx24 bit dual port RAM between 56ks
----------------------------------------------------------------------------
Board Name:DSP56116 System board
Type of Board: DSP56116 IBM PC AT card
Company: Spectrum Signal Processing (604) 438-7266
Features:  DSP Processor:  DSP56116 80? MHz, 30K words RAM,
	   A/D -- D/A: two CODECs attached to 56116 serial ports
----------------------------------------------------------------------------
Board Name: TMS320C25 System board
Type of Board: TMS320C25 IBM PC card
Company: Loughborough Sound Images
Features:  DSP Processor: TMS320C25  40 or 50 MHz 16K words RAM
	   A/D -- D/A:  1 channel 16 bit 54 kHZ A/D, D/A (100 kHz 12 bit)
Comments: "TMS320C25 Processor board" is as above, but without analog I/O
----------------------------------------------------------------------------
Board Name:TMS320C25 Data Acquisition Processor
Type of Board: TMS320C25 IBM PC card
Company: Loughborough Sound Images
Features:  DSP Processor:  TMS320C25 40 MHz, 64K words program RAM
                           64K words data RAM, 256K words buffer RAM,
Comments: Has buffer management unit, handling circular buffer management,
multiple data channel support, data compare functions, sample counter
----------------------------------------------------------------------------
Board Name: TMS320C30 System board
Type of Board: TMS320C30 IBM PC AT card
Company: Loughborough Sound Images
Features:  DSP Processor:: TMS320C30 33 MHz, 64K words RAM 
	   A/D -- D/A: dual 16 bit  A/D (Burr Brown PCM78)
                       dual 16 bit  D/A (Burr Brown PCM56)
Comments:"TMS320C30 Processor board" is as above, but without analog I/O and
has instead a prototyping area.
----------------------------------------------------------------------------
Board Name: TMS320C50 System board
Type of Board:  TMS320C50 IBM PC AT card
Company: Loughborough Sound Images
Features:  DSP Processor: TMS320C50 50 MHz 32K words RAM
Comments: Has 65sq cm wire wrap area.
----------------------------------------------------------------------------
Board Name: ADSP-2100 System board
Type of Board:  ADSP-2100A IBM PC card
Company: Loughborough Sound Images
Features:  DSP Processor: ADSP-2100A 40 MHz 16K words RAM
	   A/D -- D/A: 12 bit 125 kHz A/D, D/A
----------------------------------------------------------------------------
Board Name: ADSP-2101 System board
Type of Board: ADSP-2101 IBM PC card
Company: Loughborough Sound Images
Features:  DSP Processor:  ADSP-2101 12.5 MHz, 8K words RAM
	   A/D -- D/A: dual 14 bit 19.2 kHz CODECs (TI TLC32044Cs)
Comments: 32Kx8 EPROM socket allows some standalone behavior
----------------------------------------------------------------------------
Board Name: DSP32C System board
Type of Board: DSP32C IBM PC AT card
Company:  Loughborough Sound Images
Features:  DSP Processor: DSP32C 50 MHz, 40K words RAM
	   A/D -- D/A: dual 16 bit 153 kHz A/D, D/A (Burr Brown PCM78 & PCM56)
Comments: "DSP32 Processor board" is as above, but without analog I/O. Instead
it has a wire wrap protyping area.
----------------------------------------------------------------------------
Board Name: DSP32C Telephony Board
Type of Board: DSP32C IBM PC AT card
Company: Loughborough Sound Images
Features:  DSP Processor: DSP32C 50 MHz, 40K words RAM
	   A/D -- D/A: AT&T 7525 CODEC
Comments: Has 4 line  telephone interface with opto-isolated ring detector in
either US or UK configuration
----------------------------------------------------------------------------
Board Name: PDSP16488 Imaging/Graphics board
Type of Board:  PDSP-16488 IBM PC card
Company: Spectrum Signal Processing (604) 438-7266
Features:  DSP Processor: PDSP-16488 
----------------------------------------------------------------------------
Board Name: TMS320C1x Development System
Type of Board: IBM PC card
Company: Loughborough Sound Images
Features:  DSP Processor: TMS320C14
Comments: Integrated emulation and programming system.
----------------------------------------------------------------------------
Board Name: TMS320C40 Parallel DSP System
Type of Board: IBM PC/AT card
Company: Loughborough Sound Images
Features:  DSP Processor: 2 TMS320C40 50 Mhz 64K words RAM
	   A/D -- D/A: Daughtercard expansion socketing
Comments: Uses TIM-40 compatible modules
----------------------------------------------------------------------------

b. Mac Nubus cards
----------------------------------------------------------------------------
Board Name: MAC-56 
Type of Board: Macintosh NuBus DSP56001 card
Company: Ariel Corp. (908) 249-2900
Features:  DSP Processor: 56001 with 48-192K words RAM
Comments: Comes with DSPworks software
----------------------------------------------------------------------------
Type of Board: DSP56001 board for Mac II
Company: Motorola Corp. (512) 891-2030
Features:  DSP Processor: DSP56001
Comments: Motorola produce DSP56000 assembler, linker, simulator, C compiler
----------------------------------------------------------------------------
Type of Board: DSP96002 board for Mac II
Company: Motorola Corp. (512) 891-2030
Features:  DSP Processor: DSP96002
Comments: Motorola produce DSP96000 assembler, linker, simulator, C compiler
----------------------------------------------------------------------------
Board Name: MacDSP MB/A
Type of Board: DSP32C Apple Mac NuBus board
Company: Spectral Innovations (408) 727-1314
Price: $3495-$4995
Features:  DSP Processor: : DSP32C 60 MHz DSP with up to 1 Mbyte SRAM
Comments: Optional 12 bit A/D card at 16 bit A/D, D/A with 1,2 or 8 channels
----------------------------------------------------------------------------
Board Name: AudioMedia II
Type of Board: Macintosh NuBus DSP56001 card
Company: DigiDesign Inc. (415) 688-0600
Features: DSP Processor: 56001 @ 33.87 MHz with 8/4/4 K words P/X/Y RAM
Comments: On board stereo 16 bit 44.1/48 kHz analogue and SPDIF I/O
          Compiler/assembler/linker/simulator available from Motorola Inc
          Supported by DSP Designer software from Zola Technologies Inc
----------------------------------------------------------------------------
Board Name: Sound Accelerator II
Type of Board: Macintosh NuBus DSP56001 card
Company: DigiDesign Inc. (415) 688-0600
Features: DSP Processor: 56001 @ 33.87 MHz with 8/16/16 K words P/X/Y RAM
Comments: Optional digital/analogue audio I/O unit available
          Compiler/assembler/linker/simulator available from Motorola Inc
          Supported by DSP Designer software from Zola Technologies Inc
----------------------------------------------------------------------------
Board Name: Pro Tools
Type of Board: Macintosh NuBus 2 x DSP56001 card
Company: DigiDesign Inc. (415) 688-0600
Features: DSP Processor: 2 x 56001 32.00 MHz, 8/16/16 K words P/X/Y RAM each
Comments: Optional digital/analogue audio I/O unit available
          Compiler/assembler/linker/simulator available from Motorola Inc
          Supported by DSP Designer software from Zola Technologies Inc
----------------------------------------------------------------------------


c. S-Bus
----------------------------------------------------------------------------
Board Name:  VS-30
Type of Board:  SBus Dual Channel Telephone Signal Processor
Company:  Vigra  (619) 483-1197
Price: $1375
Availability:  In beta test Sep/Nov 1992
Features:  DSP Processor:  56001 (27 MHz)
	   A/D -- D/A: 3 x 8KHz u-Law CODECs. (Line 1, Line 2, handset)
Comments: Two RJ-11 telephone jacks, and local handset jack, DTMF transmit
& detect, hook switch control, ring detect, Call progress monitoring
SunOS drivers, programming library, demos.  All source code included.
-----------------------------------------------------------------------
Board Name:  SPIRIT-30
Type of Board:  33 MFLOP Application Accelerator -- SBus
Company:  Sonitech International Inc. (617) 235-6824
Price:  $8,995  ($9,795 for the 40 MFLOP board)
Availability: Now
Features:  DSP Processor:  TMS320C30
	   A/D -- D/A:  Optional Serial port box (extra $1795)
			IC-100-1  16 bit single channel @ 100kHz or,
                        DSP/AIB-1:  A/D 2 ch., D/A 1 ch., sampling 
                        rate up to 20 kHz,anti-aliasing filters
                        telephone handset interface ($480)
			Stereo audio and telephone interface card (1-22)
			for $695 comes with SW library and demo	programs.
Comments:  Other options for the A/D/A system are available. Filter modules
are extra.  Board runs the SPOX operating system.  All of their boards are 
code compatible with each other (PC and SUNS and VME).Up to six SPIRIT-30 
cards can be configured for a 240MFlop parallel processsing system.
-----------------------------------------------------------------------
Board Name:  S-32C
Type of Board:  SBus Accelerator Board
Company:  Ariel
Price:  $2,995  ($5,795 with C compiler)
Availability: Orders being taken now.
Features:  DSP Processor: AT&T DSP-32C  50MHz (Floating Point)
                          256 Kbytes to 4 Mbytes SRAM
	   A/D -- D/A:  Interfaces with Ariel's ProPort & Digital Microphone
			(DM-N $595.00; ProPort = $1,295)
Comments:  The ProPort is a dual channel 16-bit A/D, 20 bit D/A add on box
which has 7 crystal controlled sample rates from 8 to 96 kHz (including 48,
44.1, & 32). This device is in a separate box which attaches to the
"NeXT compatible port" on the board. Entropic is porting Waves+ to this board.
-----------------------------------------------------------------------
Board Name: S-56 / S-56X
Type of Board:  SBus Accelerator Board
Company:  Ariel  (board was designed by Berkeley Camera Engineering)
Price: $2,495 / $2,995
Availability:  Now
Features:  DSP Processor:  Motorola 56001 27Mhz
	   A/D -- D/A:  Digital Microphone or ProPort (see above)
Comments:  The S-56X has a Xilinx Gate Array for special purpose I/O. 
(1.2 Mby/sec transfer rate using the S-56X, w/ ~3ms latency at DMA page
boundaries).
-----------------------------------------------------------------------
Board Name:  ADDA1418-166
Type of Board: S-Bus A/D and D/A   (A/D and D/A are also available separately)
Company:  Analyx Systems Inc.  (510) 656-8017
Price: $2,495.00 (4-92)
Features:  DSP Processor:  None
	   A/D -- D/A:  166 kHz 16 Channel, 14 Bit Isolated A/D
	      and 4 Channel 18 Bit D/A converter
Comments:  32K Dual-Ported on-board RAM.  Single S-Bus slot.All software
included.  (A/D only is $1,995.00 and D/A only is $1,895.00)
-----------------------------------------------------------------------
Board Name: SDSP/C30D
Type of Board: TMS320C30 SBus Processor Card
Company: Loughborough Sound Images
Features:  DSP Processor: TMS320C30 33Mhz 128Kwords RAM
----------------------------------------------------------------------------
Board Name: SDSP/C30S
Type of Board: TMS320C30 SBus Processor Card
Company: Loughborough Sound Images
Features:  DSP Processor: TMS320C30 33Mhz 128Kwords RAM
Comments: Has SCSI interface
----------------------------------------------------------------------------
Board Name: MAXCOM Multimedia Processor
Type of Board: Dual DSP3210 Sbus card
Company: KINETICSYSTEMS 
Features:  DSP Processor:  Dual DSP3210
           ADC -- DAC :  multimedia audio codec and a telephone quality codec.
Comments:  Complete ATT DSP board using real-time operating system (VKOS) and
ATT Multimedia Module Library to provide functions for V.29/V.32 data/fax
modems, speech recognition/synthesis, etc.
----------------------------------------------------------------------------

d. VME
-----------------------------------------------------------------------
Board Name:  SKY Challenger
Type of Board:  VME-Bus DSP board
Company:  SKY Computers
Features:  DSP Processor:  2 TMS320C30
------------------------------------------------------------------------
Board Name:  SURFboard
Type of Board:  VME DSP board
Company:  AT&T  (Louis Rosa 908-582-5667 or Jim Snyder  surf@research.att.com)
Price:  $10K
Availability:  Now
Features:  DSP Processor:  6 DSP-32C's organized as 2 sets of 3 processors
                           (input, output, central -- can be configured)
	   A/D -- D/A:  None.  Suggest use of the Ariel ProPort VME board.
Comments:  Multiple boards can be chained together.  Central DSP's both have
access to a 1Mbyte DRAM which is also the interface to the VMEbus.  Input
and output DSP's only have 2Kx32 memory.  Central DSP's also have 256Kbytes
of local SRAM.
-----------------------------------------------------------------------
Board Name:  Banshee\VME
Type of Board:  VME bus DSP accelerator card
Company:  Atlanta Signal Processors, Inc.
Price:  start at $4,995
Availability:  March 1991
Features:  DSP Processor:  TMS320C30
	   A/D -- D/A:  available as a separate daughter board
Comments:  Programming tools can be used through any PC-compatible computer 
(separate debugging port).
-----------------------------------------------------------------------
Board Name:DSP56001 VME board
Type of Board: DSP56001 VME bus card
Company: Spectrum Signal Processing (604) 438-7266
Features:  DSP Processor: two Motorola DSP56200 10MHz 24K words RAM
	   A/D -- D/A:  dual channel 16 bit 153 kHz A/D, D/A,
----------------------------------------------------------------------------
Board Name: Versatile Array Signal Processor
Type of Board: VME-based three board (or more) set
Company: Spectrum Signal Processing (604) 438-7266
Features:  DSP Processor: five DSP96002
Comments: contains (1) general signal processing board (four processor DSP96002
VME board), (2) I/O processor board (DSP96002 VME board), (3) two-port
memory board (4Mx64 bit dual port memory). 
----------------------------------------------------------------------------
Board Name: Dual TMS320C30 VME board
Type of Board: Dual processor TMS320C30 VME card
Company: Spectrum Signal Processing (604) 438-7266
Features:  DSP Processor: dual TMS320C30 33 MHz, 64K words RAM per processor
           A/D -- D/A :optional dual 18 bit 200 kHz A/D, D/A
Comments: 6U Eurocard format 
----------------------------------------------------------------------------
Board Name: MMI-210 Signal/Audio Processor
Type of Board: VME board
Company: Vigra
Features:  DSP Processor: Two 27 MHz 56001 DSPs 8K SRAM (32K optional) and
                          1 Meg ($2995) or 4 Meg ($3650) DRAM
           A/D -- D/A :16-bit A/D & D/A  8,16,32,44.1,48,96 Ksamples/sec
Comments:   Line & mic inputs, line & power amp outputs.
----------------------------------------------------------------------------
Board Name: Ranger
Type of Board: VME board
Company: Image and Signal Processing
Features:  DSP Processor:  up to 4 TMS320C30
Comments: Some libraries included.
----------------------------------------------------------------------------
Board Name: MMI-105 Single Channel Audio/Signal Processor
Type of Board: VME board
Company: Vigra
Features:  DSP Processor: 20 MHz 56001 DSP (27 Mhz optional) 8K SRAM and
                          1 Meg ($1895) or 8 Meg ($2995) DRAM
           A/D -- D/A :  14-bit A/D & D/A 8, 13.6, and 19 KHz sampling rates.
Comments: Mic & line inputs, power amp & line outputs.
----------------------------------------------------------------------------
Board Name: MMI-420 Four Channel Signal Processor
Type of Board: VME board
Company: Vigra
Price: $3225
Features:  DSP Processor:  4 56001's 27 MHz - 96K SRAM & 16K EPROM per DSP
Comments:  - 4 Megs multi-ported DRAM
----------------------------------------------------------------------------
Board Name: MMI-4210 Four Channel Signal/Audio Processor
Type of Board: VME board
Company: Vigra
Price: $5950
Features:  DSP Processor:  4 56001's 27 MHz - 96K SRAM & 16K EPROM per DSP
           A/D -- D/A :  4 16-bit A/D and 4 18-bit D/A converters
Comments: Sampling rates from 1 to 50 KHz, continuous. Transformer or
direct-coupled analog I/O. Programmable output mixing, input and output gain
levels. Digital mixing, speech energy detection, and ADPCM on firmware
----------------------------------------------------------------------------

e. NeXT bus
----------------------------------------------------------------------------
Board Name: QP-56
Type of Board:Five processor DSP56001 card for NeXT NextBus
Company: Ariel Corp. (908) 249-2900
Features:  DSP Processor: DSP56001 26 MHz  8K/16K words RAM per processor
Comments: Five NeXT compatible DB-15 ports
----------------------------------------------------------------------------

f. SCSI
-----------------------------------------------------------------------
Board Name:  SKYstation
Type of Board:  DSP vectorizing accelerator for sparc workstations
Company:  SKY Computers  (508) 256-1626
Price: $10K and up (depends on amount of memory required)
Availability:  Now.
Features:  DSP Processor:  I860/960
	   A/D -- D/A:  None.
Comments:  Vectorizing C and FORTRAN compilers available. Math library(hand
coded) also available. Company also makes VME cards with similar features.
-----------------------------------------------------------------------
Board Name: DAT-Link and DAT-Link+
Type of Board: Standalone SCSI unit
Company: Townshend Computer Tools (514)289-9123
Price: US: $4,000-$4,500
Availability: 1 week delivery
Features: DSP Processor: DSP-32C with 64k RAM, expandable to 2Mbytes.
          Interfaces : DSP32C's serial I/O, AES/EBU interface
Comments: Full networked software with server, applications and libraries
including source. Real time playback/recording of stereo audio files.
Trainable IR transceiver - control any device with IR remote control.
Works with any UNIX work-station that has SCSI.
Compatible with AT&T's DSP32C development system, compiler, etc.
-----------------------------------------------------------------------
Board Name:  DSP-32C
Type of Board:  SCSI Interface DSP Board -- Actually a PC board which can be
		accessed through an on board SCSI port.
Company:  Ariel
Price:  $3,495
Availability:  Now
Features:  DSP Processor:  AT&T DSP-32C
	   A/D -- D/A:  16 Bit analog I/O
Comments:  Includes the PDS-32C Program Development Software.
-----------------------------------------------------------------------
Board Name:  DeskLab
Type of Board:  SCSI data collection/analysis box
Company:  Gradient (609) 387-8688
Price:  $5,500
Availability:  Now
Features:  DSP Processor:  ??
	   A/D -- D/A:  14 bit A/D D/A,  Telephone interface is available.
Comments:  Complete package of data collection and analysis tools under UNIX.
It is not possible (supported) to directly access the DSP that is in the box 
nor can user specified functions be run using their analysis package.
-----------------------------------------------------------------------

g. Standalone.
-------------------------------------------------------------------------
Board Name: AE2000
Type of Board: TMS320C31 board
Company: Intellibit
Features:  DSP Processor: TMS320C31
Comments: Board is only 3" by 2.5"
-------------------------------------------------------------------------

Manufacturers:

Ariel Corp.
433 River Road
Highland Park, NJ 08904
Phone: (908) 249-2900
FAX: (908) 249-2123
BBS: (908) 249-2124
Email: ariel@ariel.com
-----

Atlanta Signal Processors, Inc. (ASPI)
770 Spring St.
Atlanta, GA 30308
Phone: (404) 892-7265
FAX: (404) 892-2512

----

Berkeley Camera Engineering
3616 Skyline Drive
Hayward, CA 94542
Phone: (415) 613-5113
Email: mikep@nikon.ssl.berkeley.edu

-----

Dalanco Spry
89 Westland Ave.
Rochester, NY  14618
Phone: (716) 473-3610

-----

DigiDesign Inc
1360 Willow Road, Suite 101
Menlo Park CA 94025
Tel: 010 1 415 327 8811
Fax: 010 1 415 327 0777

-----

DSP Research
391 Balsam Ave. (OR Possibly: 1095 E. Duane Ave) {Someone clarify?}
Sunnyvale, CA 94086
Phone: (408) 773-1042
FAX: (408) 736-3451

-----

Image & Signal Processing
120 Linden Avenue
Long Beach CA 90802
Phone: (213) 495-9533
FAX: (213) 495-1258

----

Intellibit
P.O. Box 9785
McLean, VA  22102-0785
Phone: (703)442-4781
Fax: (703)442-4784

-----
KINETICSYSTEMS
in USA:
William Ponton
Tel: 609-921-2088 
Fax: 609-683-9633
in Europe:             
Tel: 41-22-798-4445    
Fax: 41-22-798-0525  

-----

Loughborough Sound Images Ltd
The Technology Centre
Epinal Way
Loughborough Leics LE11 OQE
England
Phone: +44 (0)509 231843
Fax: +44 (0)509 262433
N.B. US distributor is Spectrum Signal Processing (see below)

-----

Motorola Corp.
DSP Operation
Phone: (512) 891-2030
BBS: (512) 891-DSP1 (300/1200 baud)
BBS: (512) 891-DSP2 (1200 baud V.22)
BBS: (512) 891-DSP3 (2400 baud V.22bis)

-----

Natural Microsystems Corp.
8 Erie Drive
Natick, MA 01760-1313
(800)533-6120

-----

Spectral Innovations
Santa Clara
(408) 727-1314

-----

Spectrum Signal Processing
Westborough Office Park
1500 West Park Drive
Westborough MA 01581 USA
Phone: (508) 366 7355
FAX: (508) 89988 2772

----

Townshend Computer Tools 
Phone:(514)289-9123,
FAX: (514)289-1831
E-Mail: datlink%tt@cam.org

----

Virga, Inc.
4901 Morena Blvd.
Bldg. 502
San Diego, CA 92117
(619) 483-1197
----------------------------------------------------------------------
Other information sources:  
1.  SBus Developer List maintained by Sun.  Lists all known SBus devices 
being developed.  Contact Jeff Siegel (sieg@pistons.sun.com).
2.  Signal Technology's N! Power (X-windows software for signal analysis)
is designed to work with "a variety of Data Acquisition Hardware devices." 
Their system also has basic and advanced DSP modules.
3.  Entropic Speech's Waves+ package (X-windows software for DSP type
processing -- includes a lot of speech tools) works with a number of
processor boards including some of those from Ariel.
=======================================================================

-- 

Please send email concerning this FAQ to hards4@ee.adfa.oz.au
Snail mail to : Brad Hards, Officers Mess, Australian Defence Force Academy,
Campbell ACT 2601, AUSTRALIA.
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