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DG1SCR > DSP 09.04.95 01:57l 251 Lines 9087 Bytes #999 (999) @ EU
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Read: DL2WP DL1EJW GUEST DK5RAS
Subj: comp.dsp-faq part 8/8
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Sent: 950409/0021z @:DB0RBS.#BW.DEU.EU [SCHWIEBERDINGEN OP:DL1SEM] BCM1.36
From: DG1SCR @ DB0RBS.#BW.DEU.EU (Juergen)
To : DSP @ EU
Q6. Manufacturer's addresses and telephone numbers.
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[...]
Q7: Summary of FTP sites containing DSP-related software.
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Large DSP packages:
Package URL
..................................................................
Khoros ftp://ftp.khoros.unm.edu/pub/khoros/
Ptolemy ftp://ptolemy.berkeley.edu/pub/ptolemy/
Ptolemy http://ptolemy.berkeley.edu/Ptolemy.html
Mathematica:
Package URL
..................................................................
Mathsource ftp://mathsource.wri.com/pub/
Mathsource gopher://mathsource.wri.com:70/1
Signal Processing Pack ftp://gauss.eedsp.gatech.edu/Mathematica/
COSYPAK ftp://veda.esys.cwru.edu/
Various notebooks ftp://ccrma-ftp.stanford.edu/pub/DSP/
Maple:
Package URL
..................................................................
Linear Systems Toolbox ftp://ftp.egr.duke.edu/pub/maple/linsys1.2.tar.Z
MATLAB:
Package URL
..................................................................
Communications channel
equalization toolbox ftp://imago.coe.northeastern.edu/pub/source/matlab/tbx
Communications toolbox file://ftp.mathworks.com/pub/contrib/misc/comm_tbx.tar
Auditory Toolbox ftp://ftp.apple.com/pub/malcolm
Signal Processing ftp://ftp.nps.navy.mil/pub/ece/dwbrown
MATLAB user's group Send email with body of "send index from MATLAB tools"
to netlib@ornl.gov.
Filter design:
Package URL
..................................................................
METEOR (FIR) ftp://priceton.edu/pub/
DFIR (FIR) ftp://aldebaran.ee.mcgill.ca/pub/dfir
PltFilter ftp://aldebaran.ee.mcgill.ca/pub/pltfilter
Parks-McClellan (FIR) ftp.uu.net/usenet/comp.sources.misc/volume22/fir/part01.Z
General math:
Package URL
..................................................................
General math stuff ftp://ftp.cso.uiuc.edu/math/README/
NSWC library ftp://euler.math.usma.edu/pub/misc/nswc.tar.Z
Misc. DSP code ftp://nimios.eng.mcmaster.ca/pub/IEEE/software/dsp.zip
Speech compression:
Package URL
..................................................................
ADPCM ftp://ftp.cwi.nl/pub/adpcm.shar
GSM ftp://ftp.cwi.nl/pub/gsm-1.0.tar.Z
Motorola DSP56001, DSP56156, DSP96002 code:
Package Host Directory
..................................................................
QJ DSP56001 assembler nic.funet.fi pub/ham/dsp/dsp56k-tools/
a56-1.1.tar.Z
evans.ee.adfa.oz.au dsp56k-asm.sh.z
DSP56001 C compiler nic.funet.fi pub/ham/dsp/dsp56k-tools/
dsp56k-gcc.tar.Z
evans.ee.adfa.oz.au pub/micros/56k/g56k.tar.Z
DSP56156 C compiler nic.funet.fi pub/ham/dsp/dsp56k-tools/
gcc5616.tar.Z
Motorola Dr. Bub BBS nic.funet.fi pub/ham/dsp/dr.bub/
{56000,56100,56200,96000}
evans.ee.adfa.oz.au pub/micros/56k/
56{0,1,2,}00.tar.Z,
96000.tar.Z,
tools.tar.Z
src.doc.ic.ac.uk computing/systems/motorola/
digital-signal-processing/
dr.bub.sources/
{56001,56100,56200,96000,
tools}.tar.Z
ccrma-ftp.stanford.edu pub/DSP/Dr.Bub-4.tar.Z
ernie.uvic.ca dsp56100, dsp56k, dsp96k,
dsptools
Misc. DSP56001 code ccrma-ftp.stanford.edu clm, NeXT code
Texas Instruments TMS320 code:
Package Host Directory
..................................................................
C30 assembler epona.physics.ucg.ie pub/dsp/TMS320/
C30/as30.tar.Z
TI C30 asm schutz.ee.uts.edu.au pub/DSP/c30/as30.tar.Z
TI BBS evans.ee.adfa.oz.au mirrors/tibss
ti.com mirrors/tms320bbs
Misc. C30 code schutz.ee.uts.edu.au pub/DSP/c30/fmaudio.tar.Z
C40 libraries epona.physics.ucg.ie pub/dsp/TMS320/
8.1 What are wavelets? Where can I get more information?
In short, wavelets are a way to analyze a signal using base functions
which are localized both in time (as diracs, but unlike sine waves),
and in frequency (as sine waves, but unlike diracs). They can be used
for efficient numerical algorithms and many DSP or compression
applications.
The mathematical theory behind wavelets (and other related transforms)
is given in the appendix of the XWPL reference manual. There is also a
good "5-minute" introduction to wavelets in the comp.compression
newsgroup FAQ.
Other sources of information on wavelets are:
o a mailing list, "Wavelet Digest". Subscriptions for Wavelet Digest:
E-mail to wavelet@math.scarolina.edu with "subscribe" as subject.
o the Wavelet gopher site bigcheese.math.scarolina.edu
o the FTP servers ftp://pascal.math.yale.edu ftp://maxwell.math.scarolina.edu
8.2 What are some good books and papers on wavelets?
The best introduction to wavelet transforms is in: Wavelets and
Signal Processing- Oliver Rioul and Martin Vetterli, IEEE Signal
Processing magazine, Oct. 91, pp 14-38
A good introductory book on wavelets:
Wavelet Theory and Its Applications
Randy K. Young
Kluwer Academic Publishers
ISBN 0-7923-9271-X
A more thorough book:
Multiresolution Signal Decomposition
Transforms, Subbands, Wavelets
Ali N. Akansu & Richard A. Haddad
Academic Press, Inc.
ISBN 0-12-047140-X
A couple of interesting papers:
Wavelets and Filter banks: Theory and Design, IEEE transactions on
Signal Processing, Vol. 40, No.9, Sept. 1992, pp 2207-2232
Mac Cody's articles in Dr. Dobb's Journal, April 1992 and April 1993
Paper by Ingrid Daubechies in IEEE Trans. on Info. theory , vol
36. No.5 , Sept 1990 and a book titled " Ten lectures on Wavelets"
deal with the mathematical aspects of the WT.
8.3 Where can I get some software for wavelets?
One useful software package is X Wavelet Packet Laboratory (XPWL)
XWPL is an X based tool to examine one-dimensional real-valued signals
using wavelets and wavelet packets. It has been designed to be as easy
to use as possible for beginners. It is intended more as an
educational and exploratory tool than as a numerical analysis program,
even though it uses fast, optimized wavelet and wavelet packet
transforms.
It is available in binary form only by anonymous ftp from
ftp://pascal.math.yale.edu/pub/software/xwpl
Binaries are available for the following platforms:
Sun Sparcstations running SunOS 4.1
NeXT machines running NeXTstep 3.0 or higher, with an X server
Silicon Graphics machines (IRIS)
DEC Alpha AXP running OSF/1 1.2 or higher
i386/i486 PC compatible with Linux 0.99
There is also a sample data directory containing interesting signals.
Contact: Fazal Majid (majid@math.yale.edu).
Rice Wavelet Tools
Announcing Release 2.0 of rice-wlet-tools. This is a collection of
MATLAB of "mfiles" and "mex" files for twoband and M-band filter
bank/wavelet analysis from the DSP group and Computational Mathematics
Laboratory (CML) at Rice University, Houston, TX. This release
includes application code for Synthetic Aperture Radar despeckling and
for deblocking of JPEG decompressed Images.
The programs have been tested on Sparcstations running SunOS 4.1.n
with MATLAB 4.1. However, the "mex" code is generic and should run on
other platforms (you may have to tinker the Makefiles a little bit to
make this work). There are several utility routines all of them
callable from MATLAB. All the C files (leading to the mex files) can
also be directly accessed from other C or Fortran code.
A collection of of papers and tech reports from the DSP group is also
available. You could obtain this distribution of software and papers
by anonymous ftp OR telnet. ftp://cml.rice.edu//pub/dsp/software,
ftp://cml.rice.edu//pub/dsp/papers and telnet://dsp.rice.edu
Report problems/bugs and installation info on non-SUN/non-unix
platforms send mail to wlet-tools@rice.edu (or ramesh@dsp.rice.edu)
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