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Frequently Asked Questions (FAQS);faqs.249



To train adult dogs, or continue the puppy training as an adult, is
relatively simple.  Some dogs are natural pullers, others are not.
Some dogs take right to the harness the first time, and other dogs,
even ones from reputable breeders, may take extensive training.  You
just never know.

It is vital to get the dog to lean out and keep the line between it
and you taut.  Some dogs have a real problem with this, others do not.
For problem dogs, the cause usually is due to the dog not liking you
to be behind it.  If you do have trouble, there are a variety of
methods you can use.  As long as you make training a fun game, and you
make the dog understand what you want it to do, training will progress
quickly, even for stubborn dogs, like Siberians.  Fortunately, they
LIKE to pull, so their stubbornness is not a problem here.  Sometimes
getting them to STOP pulling is!

Some mushers feel that it is best to train dogs to pull lots of
weight, then speed comes naturally in a race without the weight.
Others feel that speed and endurance training is best.  Still others
feel that a combination works best, similar to the combination
training for the musher.  Training for speed and endurance by mushing
shorter distances (under 10 miles, sometimes even 3 or 4 miles) at top
speed and up hills is beneficial.  Loping along at 3 or 4 miles an
hour for 15 or 20 miles is also beneficial.  Both of these build
strength and endurance.  Pulling heavy weight for short distances is
also quite good, particularly for wheel dogs (the ones hitched closest
to the sled).  For this, try a plastic tub to which you can add
plastic weights (the ones from barbell sets will have the weights
printed on them).

Whichever method you use, remember to take it easy with your dogs and
not push them to hard, and never, NEVER, lose your temper with your
dogs.  Remember that this is supposed to be fun for both you and the
dogs.  George Attla, a famous musher once said, "If the dogs make a
mistake while out on the trail remember that it is not the dogs that
have made the mistake.  It is you."  For additional training
information (with much more detail than is practical to provide here),
see the references.

10. Training lead dogs

To successfully mush, one must have a good lead dog (or dogs).  This
dog will take your commands for regulating speed and direction for the
entire team.  Naturally, if you are driving only one dog, that will be
your lead dog.

Training lead dogs is too complex to really do it justice here.  The
basics are you want the dog to learn to turn right, left, speed up,
and slow down on voice command.  You also want the dog to bypass
interesting detours and distractions.  In addition to the basic
commands already introduced (see section 3), the dog must also be
taught the commands below:

       kissing sound : Speed up (or other appropriate sound)
       on-by         : Go by a fork in the trail, other dogs, or
                       other distractions without detour

All commands are spoken in a firm, calm, not too loud voice.

During training, you must be certain to use varied turns and trails to
be sure that the dog is really executing the commands rather than
following a well worn path.  You must also anticipate the turn and
issue the command at the correct time from the *dog's* perspective.
Finally, some people get confused when issuing the right/left
commands, particularly in the excitement of a race.  Some mushers tape
the commands on the front of their sleds, on the right and left sides.
You may want to do this while beginning on the sled.

To train a dog to execute these commands with regularity is not too
difficult.  To train a dog to do this during the excitement of a race
with lots of distractions is more difficult.  One possible way to
approach training is to start out on foot when the dog is a puppy.
Keep the lessons varied, quick, and fun.  Be certain to do the lessons
in a variety of environments, with and without distractions.  When the
dog is old enough to pull weight (about one year to 18 months, get
advice from your veterinarian), you may wish to graduate to cross
country skiis.  The dog will learn to execute commands in snowy
conditions, and at higher speeds.  Once you have your lead dog well
trained and pulling your sled, you will find that other untrained,
young, dogs can be very easily added to your team as your lead dog
will "correct" the new dog's mistakes, usually faster and better than
you can.

This is one way in which lead dogs can be trained.  Consult the
references and experienced mushers (if you can find any) for
additional information.

11.  Training for weight pulling

Here emphasis is on strength and pulling straight no matter
how difficult.  Most of the mushing books in the references discuss
weight pulling training.

12.  Training for skijoring

Skijoring is you on cross country skis and the dogs pulling you.  YOU
MUST BE A VERY GOOD CROSS COUNTRY SKIER.  This is a must.  Before
attaching dogs, cross country ski all over the place, on a wide
variety of terrain.  Learn to fall in a controlled way.  You will
eventually need to do this when skijoring.  You will need to learn to
turn quickly and ski in control at high speeds.  Skiing downhill in
cross country skis is a good way to simulate skijoring speeds.

The dog(s) must be well trained as well.  Train all of them as lead
dogs.  They need to know and obey all of the commands very well
(especially whoa!).  The references all include information about this
fast growing sport.

13.  Health, diet, and care -- Sled Dog Specifics (briefly)

Sled dogs are athletes.  They are also remarkably healthy.  It is
important to realize that because sled dogs are athletes, they require
special attention in at least two specific areas.

Probably one of the most important aspects for caring for sled dogs is
the foot.  You should inspect your dog's feet regularly.  The skin of
the pad should feel tough, but pliable, be resistant to abrasions and
lacerations, and be free from cracks, dryness, or scarring.  Also
inspect the nails of the foot carefully.  Nails can help the dog grip
ice, but if too long, they can cause serious foot injury.  According
to Miki Collins in _Dog Driver_, if the nails are long enough to force
the toes upward when the dog is standing on a hard, level surface,
clip them.  Nails that are too long can get caught and ripped out on
the trail, or they can cause toes to break.  Both of these injuries
can be quite serious, and they are certainly painful.

The subject of diet should also be touched on here.  Most mushers feed
a high stress, high energy diet during mushing season, and switch to a
"maintenance" diet during the "off" season.  For example, one
experienced musher mixes Science Diet Performance dry with canned
during mushing season.  This is a high fat, high protein food.  Some
mushers even mix food in with lots of water hours before a race to
encourage drinking.  Dogs must be very well hydrated.  During the off
season, the musher in this example feeds Science Diet Maintenance
canned mixed with either Science Diet Maintenance dry or Eukanuba dry.
During the mushing season, the dogs are using all components of the
food that is fed.  During the off season, there is no need for such
high energy food, and in fact, high protein foods can cause kidney
trouble later in life when not fed in moderation.

14.  Final remarks

Hopefully, this brief summary has been helpful to you.  Even if you do
not want to get involved in mushing yourself, try and find mushing
events in your area.  It is wonderful to see the handsome dogs
enjoying doing what they were bred for.

15.  References

15.1.  Recommended books for mushing, weight pulling, and skijoring:

Levorsen, Bella, ed.  _Mush!  A Beginner's Manual of Sled Dog
Training_.  Sierra Nevada Dog Drivers, Inc.  Arner Publications, 1976.
ISBN 0-914124-06-4.

Collins, Miki and Julie.  _Dog Driver.  A Guide for the Serious
Musher_.  Alpine Publications, 1991.  ISBN 0-931866-48-0.

Flanders, Noel K. _The Joy of Running Sled Dogs_. Alpine Publications,
1989.  ISBN 0-931866-39-1.

Fishback, Lee and Mel.  _Novice Sled Dog Training_.  13th printing,
Raymond Thomson Company, 1989.

15.3.  Recommended breed books:

Demidoff, Lorna B. and Michael Jennings.  _The Complete Siberian
Husky_.  Howell Book House, 1978.  ISBN 0-87605-314-2.

Riddle, Maxwell and Beth J. Harris.  _The New Complete Alaskan
Malamute_.  Howell Book House, 1990.  ISBN 0-87605-008-9.

15.4.  Recommended racing and history:

Sherwonit, Bill.  _Iditarod, The Great Race to Nome_.  Alaska
Northwest Books, 1991.  ISBN 0-88240-411-3.

Steger, Will and Jon Bowermaster.  _Crossing Antarctica_.  Alfred A.
Knopf, Inc., 1991.  ISBN 0-394-58714-6.

15.6.  Periodicals about sled dogs and mushing

The Siberian Quarterly
4401 Zephyr Street
Wheat Ridge, CO   80033-3299

The Malamute Quarterly
4401 Zephyr Street
Wheat Ridge, CO  80033-3299

Mushing.
The All Season International Magazine for Dog-Driving Sports
P.O. Box 149
Ester, AK  99725

15.7.  Recommended places to order equipment:

Black Ice, Konari Outfitters, Tun-Dra Outfitters and Ikon Outfitters:
all addresses are in Catalogue section of the Annotated References FAQ.


K.  Gaming Dogs.

1.  Frisbee

There are serious competition trials for dogs playing frisbee.

2.  Flyball

Thanks to Ian J. Hogg.

Flyball is a team sport for dogs.  It is a relay race with 4 dogs on a
team.  The dogs jump over 4 hurdles spaced 10 ft apart and then
step/jump/throw themselves into a spring loaded box that shoots out a
tennis ball.  The dog catches the tennis ball and then runs back over
the 4 hurdles.  When the dog crosses the starting line the next dog
goes.  The first team to have all 4 dogs run without errors wins the
heat.  There are three heats per race.  The winner of each heat
receives 2 points towards their standing in the tournament.  The dogs
earn points towards flyball titles based on the teams time:

  less than 32 secs:       Each dog receives 1 point
  less than 28 secs:       Each dog receives 5 points
  less than 24 secs:       Each dog receives 25 points.

The titles the dogs can earn are
  FD   Flyball Dog          20 (25?) points
  FDX  Flyball Dog Excellant 100 points
  FDCH Flyball Dog Champion  500 points

The really good times run about 19 seconds.  The hurdles' height are
dependent on the height of the dogs in the team -- 5" below the
shoulder height of the shortest dog.  10" is the minimum height and
16" is the maximum height.

Anyone with a dog that loves balls can give it a try.  Check to see if
obedience schools in your area have teams.


----------------
This file is Copyright (c) 1992 by Cindy Tittle Moore.  It may be
freely distributed in its entirety provided that this copyright notice
is not removed.  It may not be sold for profit nor incorporated in
commercial documents without the author's written permission.

Cindy Tittle Moore
Internet: [e-mail]  UUCP: ...!ucbvax!ucivax!tittle
Bitnet  : cltittle@uci        USmail: PO BOX 4188, Irvine CA 92716
----------------
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From: [e-mail] (Phil Lapsley)
Newsgroups: comp.dsp,news.answers
Subject: comp.dsp FAQ [1 of 2]
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Summary: This is a periodic posting to comp.dsp that gives information
    on frequently asked questions asked in this newsgroup.

Archive-name: dsp-faq/part1
Last-modified: Mon Nov 16 1992
Version: 0.7

Welcome to the comp.dsp FAQ.  We are seeking 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 [e-mail].
Meta-comments are all in curly braces {like this}.  Acknowledgements to
people responsible for articles and/or bits of information are in
square brackets, [like so].

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, or from copernicus.Berkeley.EDU
in dsp-faq.help.*.

We are most grateful to the following contributors who helped out with
this version of the FAQ:

William Alves        [e-mail]
Steve Clift        [e-mail]
Dan Frankowski        [e-mail]
Ed Hall            [e-mail]
Quinn Jensen        [e-mail]
Greg Koker        [e-mail]
Juhana Kouhia        [e-mail]
Tony Richardson        [e-mail]
Paul Simoneau        [e-mail]
Witold Waldman        [e-mail]

and the following folks who helped out with previous versions:

Joe Campbell        [e-mail]
Tim Channon        [e-mail]
Malachy Devlin        [e-mail]
Brian Evans        [e-mail]
John Fisher        [e-mail]
Dan Frankowski        [e-mail]
Maurice Givens        [e-mail]
Ed Hall            [e-mail]
Vince Herried        [e-mail]
Eric Jacobsen        [e-mail]
Pete Janzow        [e-mail]
Richard Kim        [e-mail]
Gints Klimanis        [e-mail]
Greg Koker        [e-mail]
John Lazzaro        [e-mail]
Paul Russell        [e-mail]
Stanley Sasaki        [e-mail]
Bill Schottstaedt    [e-mail]
Greg Smart        [e-mail]
Andrew Ukrainec        [e-mail]
Ronnin Yee        [e-mail]

Get your name here - contribute something!  (If you don't want your
email address listed in your contribution, please indicate so.)

Phil Lapsley        [e-mail]    (temporary FAQ maintainer)
Bradley Hards        [e-mail]    (original FAQ maintainer)

=============================================================================

0. What is comp.dsp?

1. General DSP.
   1.1 DSP book and article references.
       1.1.1 Bibles of DSP.
       1.1.2 Adaptive signal processing.
       1.1.3 Array signal processing.
       1.1.4 Windowing.
       1.1.5 Digital audio effects processing.
   1.2 Where can I get free software for general DSP?
       1.2.1 What is Gabriel?  Where can I get it?
       1.2.2 What is Ptolemy?  Where can I get it?
       1.2.3 What is Khoros?  Where can I get it?
       1.2.4 What are DSP Tutorials?  Where can I get them?
       1.2.5 What are some DSP extensions to MATLAB?  Where can I get them?
       1.2.6 What is the Signal Processing Package for Mathematica?
             Where can I get it?
       1.2.7 What is the Controls System Package for Mathematica?
             Where can I get it?
       1.2.8 What are some other DSP Notebooks for Mathematica?
       1.2.9 What is the Linear Systems Toolbox for Maple?  Where can I get it?
       1.2.10 Where can I get text to speech conversion software?
       1.2.11 Where can I get filter design software?

2. Algorithms and standards.
   2.1 Where can I get some algorithms for DSP?
   2.2 What is CELP and LPC?  Where can I get source for them?
   2.3 What is ADPCM?  Where can I get source for it?
   2.4 How does pitch perception work, and how do I implement it?
   2.5 What standards exist for digital audio?  What is AES/EBU?
       What is S/PDIF?
   2.6 What is mu-law encoding?  Where can I get source for it?
   2.7 How can I do CD <-> DAT sample rate conversion?

3. Programmable DSP chips and their software.
   3.1 What are some current, popular programmable DSP chips?
   3.2 Software for Motorola DSPs.
    3.2.1 Where can I get a free assembler for the Motorola DSP56000?
    3.2.2 Where can I get a free C compiler for the Motorola DSP56000?
    3.2.3 Where can I get algorithms or libraries for Motorola DSPs?
          What is the number for the Motorola DSP BBS?
    3.2.4 Where can I get NeXT-compatible Motorola DSP56001 code?
   3.3 Software for Texas Instruments DSPs.
    3.3.1 Where can I get algorithms or libraries for TI DSPs?
                 What is the number for the TI DSP BBS?
    3.3.2 Where can I get a free C compiler for the TMS320C30?
   3.4 Software for Analog Devices DSPs.
        3.4.1 Where can I get algorithms or libraries for AD DSPs?
          What is the number for the Analog Devices DSP BBS?

4. Hardware.
    4.1 DSP development boards.
    4.1.1 IBM PC.
    4.1.2 Mac Nubus.
    4.1.3 SBus.
    4.1.4 VMEbus.
    4.1.5 Next bus.
    4.1.6 SCSI bus.
    4.1.7 Standalone.
    4.2 Who makes AES/EBU chips?

5. List of manufacturers, addresses, and telephone numbers.

To search for a particular question within a text editor, look for the
pattern "Q#.##:", e.g., "Q1.2:".

=============================================================================

Q0: 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 and sci.image.processing.

=============================================================================

1. General DSP.

This section deals with general DSP, that is, DSP books, algorithms,
and packages that are not related to a particular manufacturer's DSP chip.

=========================================================================

Q1.1: Summary of DSP books and significant research articles.

Q1.1.1: 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.

Thomas Parsons, "Voice and Speech Processing", McGraw-Hill, 1987,
ISBN 0-07-048541-0.
Addresses the cocktail party effect, as well as other material.
[Maurice Givens, [e-mail]]

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

Q1.1.2: Adaptive signal processing.

S. Haykin, "Adaptive Filter Theory", 2nd Ed., Prentice Hall,
Englewood Cliffs, NJ, 1991.

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

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

Q1.1.3: 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.

R.T. Compton, Jr., "Adaptive Antennas, Concepts and Performance",
Prentice-Hall, 1988, ISBN 0-13-004151-3.

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

Q1.1.4: Windowing articles.

F. J. Harris, "On the Use of Windows for Harmonic Analysis with the DFT",
IEEE Proceedings, January 1978, pp. 51-83.
Perhaps the classic overview paper for discrete-time windows.  It discusses
some 15 different classes of windows including their spectral responses and
the reasons for their development.  [Brian Evans, [e-mail]]

Nezih C. Geckinli & Davras Yavuz, "Some Novel Windows and a Concise Tutorial
Comparison of Window Families", IEEE Transactions on Acoustics, Speech,
and Signal Processing, Vol. ASSP-26, No. 6, December 1978.
[Bob Beauchaine, [e-mail]]

Lineu C. Barbosa, "A Maximum-Energy-Concentration Spectral Window,"
IBM J. Res. Develop., Vol. 30, No. 3, May 1986, p. 321-325.
An elegant method for designing a time-discrete solution for
realization of a spectral window which is ideal from an energy
concentration viewpoint.  This window is one that concentrates the
maximum amount of energy in a specified bandwidth and hence provides
optimal spectral resolution.  Unlike the Kaiser window, this window is
a discrete-time realization having the same objectives as the
continuous-time prolate spheroidal function; at the expense of not
having a closed form solution. [Joe Campbell, [e-mail]]

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

Q1.1.5: Digital Audio Effects Processing.

Books (in no particular order, sorry):

Hal Chamberlin, Musical Applications of Microprocessors, 2nd Ed.,
Hayden Book Company, 1985.

Barry Blesser and J. Kates. "Digital Processing in Audio Sinals." In A. V.
Oppenheim, ed. Applications of Digital Signal Processing. Englewood Cliffs,
NJ: Prentice-Hall, 1978.

Digital Signal Processing Committee of IEEE Acoustics, Speech, and Signal
Processing Society, ed. Programs for Digital Signal Processing. New York:
IEEE Press, 1979.

John Strawn, ed., "Digital Audio Signal Processing: An Anthology.", Los Altos,
CA: W. Kaufmann, 1985.   [Contains Moorer J.A. "About This Reverb..."
and contains an article which gives a code for Phase Vocoder -- great
tool for EQ, for Pitchshifter and more --Juhana Kouhia]

Charles Dodge and Thomas A. Jerse. Computer Music: Synthesis, Composition,
and Performance. New York: Schirmer Books, 1985.

F. Richard Moore, "Elements of Computer Music", Englewood Cliffs, NJ:
Prentice-Hall, 1990.  ISBN: 0-13252-552-6 [Recommended.  --Juhana Kouhia]

Curtis Roads and John Strawn, ed., "The Foundations of Computer Music",
Cambridge, MA: MIT Press, 1985.  [Contains article on analysis/synthesis
by Strawn, recommended; also an another article maybe by J.A. Moorer
-- Juhana Kouhia]

John Strawn, ed., "Digital Audio Signal Processing", 283 pages,
$34.95, ISBN 0-86576-082-9, pub: A-R Editions.  Contents:

    1. Introduction to the mathematics of DSP (F. Richard Moore)
       [Not a bad little text]

    2. Introduction to digital filter theory (Julius O. Smith)
       [Not a bad little text, either]

    3. Spiral Synthesis (Tracy Lind Petersen)
       [first published account of a new synthesis technique]

    4. Signal processing aspects of computer music (J. A. Moorer)
       [James Moorer's classic article--discusses many synthesis
       techniques.  Reverb algorithms.  More than 6 pages of refs]

    5. An introduction to the phase vocoder (J. W. Gordon, J. Strawn)
       [Includes source code for a phase vocoder--a powerful method
       for synthesis, pitch shifting, time scale modification, etc.]
    [Comments by Quinn Jensen].

Curtis Road, ed., "Composers and the Computer", 201 pages,
$27.95, ISBN 0-86576-085-3, pub: A-R Editions.

John Strawn, ed., "Digital Audio Engineering", 144 pages,
$29.95, ISBN 0-86576-087-X pub: A-R Editions.

Deta S. Davis, "Computer Applications in Music: A Bibliography", 537 pages,
$49.95, ISBN 0-89579-225-7, pub: A-R Editions.

Ken C. Pohlmann, "The Compact Disc:  A Handbook of Theory and Use",
288 pages, $45.95 (cloth) ISBN 0-89579-234-6, $29.95 (paper)
ISBN 0-89579-228-1, pub: A-R Editions.

Forthcoming books:

Curtis Roads, "A Computer Music History:  Musical Automation
from Antiquity to the Computer Age"

Joseph Rothstein, "MIDI:  A Comprehensive Introduction"

David Cope, "Computer Analysis of Musical Style"

Dexter Morrill and Rick Taube, "A Little Book of Computer Music
Instruments"

Articles:

James A. Moorer, "About This Reverberation Business", Computer Music Journal
3, 20 (1979): 13-28. (Also in Foundations of CM below).
[Ok article, but you have to know basic DSP operations.  --Juhana Kouhia]

Check more articles from Journal of the Audio Engineering Society
(JAES), for example more articles by Strawn.

Note: books published by A-R editions can be ordered from:

    A-R Editions
    801 Deming Way
    Madison, Wisconsin 53717
    608-836-9000 (They accept VISA orders)

[The above is largely from Quinn Jensen, [e-mail];
Juhana Kouhia, [e-mail]; William Alves, [e-mail];
and Paul A Simoneau, [e-mail]]

=========================================================================

Q1.2: Where can I get free software for general DSP?

The packages listed below are mostly for general purpose DSP, that is,
DSP that is not specific to a particular programmable DSP chip.  See
the later sections in the FAQ for software relevant to a particular
programmable DSP chip.

According to Brian Evans: "There was an entire session on this subject
[free DSP software] 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." [Brian Evans,
[e-mail]]  Much of the information below is from Brian's mail.

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

Q1.2.1: What is Gabriel?  Where can I get it?

Package: Gabriel

Description:
Hierarchical block diagram environment for prototyping signal processing
systems on single or multiple processors.  Algorithms expressed in block
diagram form can be simulated, and assembly code can also be generated for
the Motorola DSP56001 and DSP96002.  Gabriel has almost been obsoleted by
Ptolemy, below.

Platforms: sun 3, sun 4, X windows.  Written in Lisp (lisp compiler supplied).

Contact: Alan Kamas, [e-mail].

To obtain:
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.
--------------------------------------------------

Q1.2.2: What is Ptolemy?  Where can I get it?

Package: Ptolemy

Description:
Hierarchical, heterogeneous block diagram DSP design environment.  Supports
simulation (dataflow and discrete event), code generation, and hardware
modeling.  All the features of Gabriel, but much cleaner and better designed.

Platforms: sun 3, sun 4, DECstation, HP, VAX.  X windows.  Written in C++.

Contact: Alan Kamas, [e-mail].

To obtain:
Anonymous ftp to forney.berkeley.edu, and retrieve ptolemy-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 Ptolemy.
--------------------------------------------------

Q1.2.3: What is Khoros?  Where can I get it?

Package: Khoros

Description:
Block diagram simulator for image and video processing.  1-D signal processing
is also supported.  See the UseNet group comp.soft-sys.khoros.

Platforms: sun 3, sun 4, others?  X windows.  Written in C.

To obtain:
Anonymous ftp to pprg.eece.unm.edu, cd /pub/khoros/release, get install.ftp.
--------------------------------------------------

Q1.2.4: What are DSP Tutorials?  Where can I get them?

Package: DSP Tutorials

Description: Computer aided instruction.

Platforms: suns under SunView.

Contact: Dr. Sally Wood, Electrical Engineering Department, Santa Clara
University, Santa Clara, CA 95053.
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Q1.2.5: What are some DSP extensions to MATLAB?  Where can I get them?

Package: MATLAB user's group public domain extensions to MATLAB

Description:

    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 [e-mail] with a
    subject: "DIG" and description.

    For  the  Pacific,   try  [e-mail]  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)