🚀 go-pugleaf

In article <georg.783334309@marie> Georg Schwarz,
georg@marie.physik.tu-berlin.de writes:
>Is there any program for the Mac, preferably PD of course, that can do
>a non-realtime frequency analysis (Fourier analysis) of a sound sample
>(for example in SND format)?
>Thanks.

SoundEdit Pro would do what you want very well. Alas, it is pay-ware.

Bart 

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# University of Amsterdam   #    *               *                  #
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In article <38r2oo$1263@mira.sara.nl> Bart van Deenen <vdeenen@phys.uva.nl> writes:
>In article <georg.783334309@marie> Georg Schwarz,
>georg@marie.physik.tu-berlin.de writes:
>>Is there any program for the Mac, preferably PD of course, that can do
>>a non-realtime frequency analysis (Fourier analysis) of a sound sample
>>(for example in SND format)?
>>Thanks.
>
There is a Fourier Transform capability in SerePlot, which is about $99.
Some of the Mac archive sites have had a demo version of SerePlot which does
everything but save and overprints the printouts, as I recall.

Rob Lake
Environmental Modeling Inc.
rbl@hal.cwru.edu

In Article <georg.783334309@marie>, georg@marie.physik.tu-berlin.de (Georg
Schwarz) wrote:
>Is there any program for the Mac, preferably PD of course, that can do
>a non-realtime frequency analysis (Fourier analysis) of a sound sample
>(for example in SND format)?
>Thanks.
If you're not in a hurry you can move the waveform to Excel and do it there.
You have to go thru ASCII decimal to use simple copy and paste.

Excel 5 has FFT built in. There are canned macros availablefor Excel 4.

In article <georg.783334309@marie>, georg@marie.physik.tu-berlin.de (Georg
Schwarz) wrote:

> Is there any program for the Mac, preferably PD of course, that can do
> a non-realtime frequency analysis (Fourier analysis) of a sound sample
> (for example in SND format)?
> Thanks.

Try SoundHack, Spectrum, Lemur. All ShareWare (I think?)

-- 
Peter Kerr                             bodger
School of Music                        chandler
University of Auckland                 neo-Luddite

In article <p.kerr-3110940906570001@130.216.90.127>, p.kerr@auckland.ac.nz
(Peter Kerr) wrote:

> In article <georg.783334309@marie>, georg@marie.physik.tu-berlin.de (Georg
> Schwarz) wrote:
> 
> > Is there any program for the Mac, preferably PD of course, that can do
> > a non-realtime frequency analysis (Fourier analysis) of a sound sample
> > (for example in SND format)?
> > Thanks.
> 
> Try SoundHack, Spectrum, Lemur. All ShareWare (I think?)
> 

I should preface this by saying that I seriously believe that no one
should be permitted to use an FFT without first passing a licensing exam.
Assuming you know that an FFT is what you want, there are many packages
avalable; I might add rLab to the list. If you want serious analysis, I
would suggest MatLab. There are toolboxes available for wavelet
transforms, system identification, digital filtering, and more. Of course,
MatLab is somewhat of a lifestyle, but once you grasp it, it gives you
considerable power, and is available for multiple platforms.

-- 
Jeff E Mandel MD MS
Bioengineering Group
Department of Anesthesia
Brigham & Women's Hospital
Boston, MA

So far as I can tell, not one response has answered the question!

The request was for a program that would read in a sound file (SND),
then do the FFT.

I have a program that will create a sound file using the built-in mike.

What I need is something like the original poster requested (read SND file,
do FFT) 
OR
a utility that will read a SND file and convert it to ascii.  Once in
ascii format, as many have noted, there are scads of programs that will
read it and do an FFT on it.

Bill Simpson

In article <2NOV94.08161416@uwpg02.uwinnipeg.ca>,
wsimpson@uwpg02.uwinnipeg.ca (BILL SIMPSON) wrote:
> The request was for a program that would read in a sound file (SND),
> then do the FFT.
> 
> I have a program that will create a sound file using the built-in mike.
> 
> What I need is something like the original poster requested (read SND file,
> do FFT) 
> OR
> a utility that will read a SND file and convert it to ascii.  Once in
> ascii format, as many have noted, there are scads of programs that will
> read it and do an FFT on it.
> 
> Bill Simpson

Well Mathematica 2.2 on my Macintosh will read AIFF sound files and you
can then manipulate them. It will certainly do FFTs so this should be
straightforward, but expensive if you don't already own Mma. You could
also output the data to an ascii file. One needs a program that converts
SND files to AIFF, the latest freeware version of SoundApp will do this.

Erik.
__________________________________________________________________________ 
Erik Jensen                                   
Department of Physics                         
University of Windsor                          ejensen@server.uwindsor.ca
__________________________________________________________________________

In article <2NOV94.08161416@uwpg02.uwinnipeg.ca>,
wsimpson@uwpg02.uwinnipeg.ca (BILL SIMPSON) wrote:

> So far as I can tell, not one response has answered the question!
> 
> The request was for a program that would read in a sound file (SND),
> then do the FFT.
> 
> I have a program that will create a sound file using the built-in mike.
> 
> What I need is something like the original poster requested (read SND file,
> do FFT) 
> OR
> a utility that will read a SND file and convert it to ascii.  Once in
> ascii format, as many have noted, there are scads of programs that will
> read it and do an FFT on it.
> 

You need "SoundEdit<->MATLAB suite" in the snd/Utility folder of Sumex-AIM
(or your favorite mirror). I use:

http://hyperarchive.lcs.mit.edu/HyperArchive/Archive/snd/util/soundedit-matlab-converter-14.hqx

-- 
Jeff E Mandel MD MS
Bioengineering Group
Department of Anesthesia
Brigham & Women's Hospital
Boston, MA

Erik Jensen (ejensen@server.uwindsor.ca) wrote:
: In article <2NOV94.08161416@uwpg02.uwinnipeg.ca>,
: wsimpson@uwpg02.uwinnipeg.ca (BILL SIMPSON) wrote:
: > The request was for a program that would read in a sound file (SND),
: > then do the FFT.
: > 
: > I have a program that will create a sound file using the built-in mike.
: > 
: > What I need is something like the original poster requested (read SND 
: > file,
: > do FFT) 

To further warp this thread: I'm told that some macs have built-in DSPs
(which are famously wonderful for doing FFTs).  Anyone know if 1) that's
true (the former) and 2) if the DSP is user-programmable?

emails would be appreciated.

--ken

In article <39ks81$pr@rubb.rz.ruhr-uni-bochum.de>,
ken@mun.neuroinformatik.ruhr-uni-bochum.de (Ken Flaton) wrote:

>I'm told that some macs have built-in DSPs
>(which are famously wonderful for doing FFTs).  Anyone know if

>1) that's true (the former) and

Yes.  Quadra and Centris 660avs and Quadra 840avs.

>2) if the DSP is user-programmable?

Yes.  You need to buy the developer kit which, if I remember correctly, is
mindlessly expensive (US$1000 I think).  It's not sold by Apple but by a
bunch of people called "Spectral Innovations" (or something like that).

Share and Enjoy.
--
Quinn "The Eskimo!"     Pez:      "What's with all the happy sounds?"
                        Giggywig: "They're giddy with fear!"
  Sorry about being so vague but it's a vague sort of day.

In article <39ks81$pr@rubb.rz.ruhr-uni-bochum.de>,
ken@mun.neuroinformatik.ruhr-uni-bochum.de (Ken Flaton) wrote:

>To further warp this thread: I'm told that some macs have built-in DSPs
>(which are famously wonderful for doing FFTs).  Anyone know if 1) that's
>true (the former) and 2) if the DSP is user-programmable?

You should say: some macs HAD built-in DSPs (the Quadra AV family). The DSP
was an interim solution to provide the power needed for audio&visual
applications. And yes, it was user-programmable, as long as you was a Mac
developer with AT&T DSP assembler knowledge. Apple defined and documented a
real-time software architecture named ARTA for managing DSP processes.

But it's unlikely that a new Mac will feature a DSP, since it would not
offer much more than the Power chip. As many developpers, I skipped the DSP
Mac generation, being too much investment, and jumped to PowerMac.

But back to sound analysis. It's really amazing what you can do with a Mac
and a DSP. I get a fourier sonagram (I speak of two-dimensional frequency
analysis, that is energy versus frequency and time) in REAL-TIME on a good
old fx with some DSP board plugged in.

This kind of analysis is very useful in the case of transient sounds
(speech, music) where frequency-content changes rapidly. In fact, the
biggest problem with the Mac was to have CopyBits blast the pixels fast
enough to the screen so that the resulting picture scrolls smoothly.



---------------------------
Jean-Yves Bernier - SPECTRA
bernier@dialup.francenet.fr
---------------------------