🚀 go-pugleaf

My original question:

|I am going to be involved in a project in which I have to analyze
|speech signals. These speech signals are delivered as MU-LAW PCM
|data, sampled at 8000 Hz. After transforming the data to linear PCM,
|I want to perform a fourier transform, using approx. 10 ms data a time.
|
|Does anyone know of a good FFT algorithm for short-term sequences? I
|already experimented with the algorithms mentioned in "Numerical Recipes
|in C" but I had several problems with them.
|
|A second question; Are there any good books on digital signal processing
|with regard to speech processing?
|
|I will summarize to the net; this will take some time because I'm not
|here during the next week.
|
|
|Thanks in advance for any information,
|
|Johan Thole.

The following persons replied:

philabs@ram@uunet.UU.NET
nosc.mil!herman%phage.nosc.mil
boulton@netcom.com
smoore@carr.dartmouth.edu
reed@rd01.wg2.waii.com

Thanks!
--------------------------------------------------------------------------------
(Introductionary) books on the Fourier Transform mentioned are:

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

	"Practical Approaches to Speech Coding"
	Panos E. Papamichalis
	Prentice-Hall 1987 ISBN 0-13-689019-8

	"The Wavelet Transform,Time Frequency Localization, and Signal
	Analysis"
	Ingrid Daubechies
	IEEE Transactions on Information Theory, 36-5, Sept. 1990

	"Digital Spectral Analysis"
	S.L.  Marple


A FFT algorithm in C can be found in:

	C Language Algorithms for DSP.
        Paul Embree & Bruce Kimble
        Page 255-260

Other people mentioned that for Short-time FFT's it is best to
write your own algorithms.

Thanks for the information,

Johan Thole.
-- 
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Johan Thole (thole@cs.rulimburg.nl) | The wrong side of a door is
University of Limburg               | where the dog is.
Dept. of computer science           | #include <std/disclaimer.h>