🚀 go-pugleaf

Hi,
I received a lot more "me too" requests than actual replies, but
any way here are the interesting replies.

From Jos.Groot@fel.tno.nl Fri Oct 30 11:22:47 1992

	STUFF DELETED

Best regards, Jos Groot

----------------------------------------------------------------------

In reaction to requests of some people for details about the analog I/O
board I built for a PC, I recently uploaded the ADDA10.ZIP archive 
(directory <MSDOS.SOUND>) to the SIMTEL anonymous FTP site (address
WSMR-SIMTEL20.ARMY.MIL, 192.88.110.20):

<MSDOS.SOUND>
ADDA10.ZIP      ADC/DAC board for DSP experiments;TP src/exe

The archive describes how to build and use a simple low cost analog I/O 
extension board for PC's. It utilizes the 8-bit AD7569 IC containing a
500 KHz analog-to-digital converter (ADC) and a 1 MHz digital-to-analog
converter (DAC). The card can for example be used to sample sound
with the ADC and play it back through the DAC in real time, possibly after 
some `on-the-fly' digital signal processing. Files included are:

1. construction/operation description
2. electronic/layout sketch diagrams
3. Turbo Pascal 6.0 source and executable code for using the card. It includes
   routines implementing two digital (guitar) sound effects, i.e., a distortion
   and echo. These routines demonstrate the basics of the digital sound 
   processing techniques used in dedicated sound effect processors.

The files of 1. and 2. are suitable for downloading to HP Laserjet or 
PostScript compatible printers.


-- 
Jos Groot (jos.groot@fel.tno.nl)
Physics and Electronics Laboratory TNO-FEL 
P.O.box 96864
2509 JG  The Hague, The Netherlands
Tel. (31) 70 3264221, ext. 262 

----------------------------------------------------------------------------------
From jscw+@andrew.cmu.edu Sat Oct 31 08:39:58 1992

	STUFF DELETED

I have a book that seems to descibe the process of creating digital
effects algorythms without actually supplying any useful code. Instead,
logical block diagrams and lengthy text explanations are provided. When
I get to the section in question, I'll have a bit more to say though. It
does cover several filter types, simple reverb, and chorus, but right
now I'm trying to figure out the FFT section....   The book is called
_Musical_Applications_Of_Microprocessors_, though you will probably have
no difficulty finding a better text, as this is only an introduction to
the basic concepts.

Jamieson Schulte
jscw@andrew.cmu.edu
------------------------------------------------------------------------

From voss@fubar.cs.montana.edu Tue Nov  3 06:25:50 1992

	STUFF DELETED

This is Jim Voss (maybe again)  
I'm not too sure If my last email will reach you or not
If not I may have some interesting DSP effects programs that
may interest you. 
Reverb, Pitch shifting, distortion etc. 
All for the Texas Instruments TMS320-25.
./
-------------------------------------------------------------

I have the source files (ASSEMBLY LANGUAGE), I would prefer to put
them on a ftp site rather than post them to USENET, so if some kind
soul could please give me the neccessary location of such a site that I could
upload these files to.

Thanks to all who replied (especially Mr Jim Voss), the only other
stuff I have to offer is to look into dr.bub Motorola source
code, which has stuff for ffts and virtually any kind of digital
filter you might want to try.


Thanks again,
	Andy N.
--
Andy Nisbet, Dept. of Electrical Engineering, University of Manchester,
                Manchester M13 9PL, England.
Internet: andy@spec0.ee.man.ac.uk             Janet: andy@uk.ac.man.ee.spec0
ARPA: andy%ee.man.ac.uk@nsfnet-relay.ac.uk Wet String: (+44)-61-275-4561