HDTenEightyP/NetNews huggingface dataset:
From: mbenson@sytex.com (Michael Benson)
Newsgroups: comp.dsp
Subject: WANTED: Audio Effects Pro
Date: Sun, 24 Jan 93 01:32:51 EST
X-Maildoor: WaflineMail 1.00r


JTS>        In an attempt to implement a multi-effects processor using a 486 an
JTS>        Essentially what I'm looking for are proven algorithms or good refe
JTS>                -flange
   >                -chorus
   >                -pitch shifting
   >                -hall-type reverb

Did you get many responses?  I would be interested in any of this
information as well.
Michael

---
 * QMPro 1.01 41-2370 * <<<<  YUKE!  I hate advertisements!
                                                            
Newsgroups: comp.dsp
From: Walter.Harms@arbi.informatik.uni-oldenburg.de (Walter Harms)
Subject: amiga-dsp
Organization: University of Oldenburg, Germany
Date: Mon, 25 Jan 1993 13:07:18 GMT

there was an offer for amiga-dsp-boards. i lost the address.
can someone send me it ?

thx     walter
From: anadeem@ampere.bit.listserv.tech-l (Ahmed Nadeem)
Newsgroups: comp.dsp
Subject: MRI And CT-SCAN Images For Dogs?
Date: 27 Jan 93 07:53:10 GMT
Article-I.D.: ampere.ANADEEM.93Jan27005310
Distribution: comp.dsp
Organization: /home/ampere1/anadeem/.organization

Netters,
      I am currently working on a research project that involves construction 
of realistic, solid or geometric models for dogs.
      Does anyone know where I can get serial section images( MRI, CT-SCAN, 
etc ) for dogs?
                                                       Thanks,
                                                              Ahmed Nadeem
From: jargast@doc.bmd.trw.com
Newsgroups: comp.dsp
Subject: Re: Discrete Wavelet Transforms
Date: 28 Jan 93 16:38:05 MST

In article <1993Jan28.182332.25039@ncsu.edu>, bgc@eos.ncsu.edu (BRYAN GARNETT COPE) writes:
> I am interested in obtaining some good information about the theory and
> application of Wavelets. In particular, I wish to design an algorithm which
> will be based on the Discrete Wavelet Transform (DWT) to be implemented
> on a DSP based subsystem. I would like to find some articles or source
> code which describes DWT algorithms or specific applications of the DWT to
> audio signals only. I have seen a lot of info. on 2-dimensional DWT for
> seismic research, etc, but that's not what I want. Strictly audio 
> applications. 
> 
> If anyone could point me to some good information or even better, source 
> code which implements the DWT, I would be greatly appreciative!!!!!!!
> 
> Thanx in advance...
> 
> Bryan Cope
> bgc@moose.ncsu.edu
> bryanc@ralvm29.vnet.ibm.com
> (MWave Hardware developer)
> 
>
Bryan-

Here is a list of good articles, the best being Strang's (IMHO) as far
as implementation.

Daubechies, I., "The Wavelet Transform, Time-Frequency Localization and
    Signal Analysis", IEEE Trans. on Information Theory, v36, n5, 
    Sep, 1990 pp961-1005

Kronland-Martinet, R., "The wavelet Transform for Analysis, Synthesis,
    and Processing of Speech and Music Sounds", Computer Music Journal,
    v12, n4, Winter 1988, pp11-20

Kronland-Martinet, R., "Analysis of Sound Patterns Through Wavelet
    Transforms", International Journal of Pattern Recognition and
    Artificial Intelligence, v1, n2, 1987, pp273-302

Strang, G., "Wavelets and Dilation Equations: A Brief Introduction",
    SIAM, v31, n4, 1989, p614-627


Jeff Argast
jargast@oz.bmd.trw.com
 
Newsgroups: comp.dsp
From: picone@trdc001.trdc.ti.com (Joe Picone)
Subject: Re: S-Bus C30 Boards For Sparcstation-2 With Sun OS 4.1.3
Organization: Tsukuba Research and Development Center
Date: Sat, 23 Jan 1993 21:47:02 GMT

It looks like I need to port some code to a TMS320C5X as well.

How about C5X S-bus boards for the Sun, do any exist?

Regards,

----------------------------------------------------
| Joe Picone          | email: picone@trdc.ti.com  |
| Texas Instruments   | Phone: +81 298 501738      |
| Tsukuba R&D Center  | Fax:   +81 298 501729      |
| 17 Miyukigaoka      | Msg:   JP27                |
| Tsukuba, Ibaraki    | Alias: "The Terminal Man"  |
| Japan 305           |                            |
----------------------------------------------------
From: mbenson@sytex.com (Michael Benson)
Newsgroups: comp.dsp
Subject: RRRWindows for High Res S
Date: Thu, 21 Jan 93 17:50:23 EST
X-Maildoor: WaflineMail 1.00r

TC>SUMMARY:

TC>I am looking for feedback from the net about applying windows to
  >discrete-time samples for high resolution spectral analysis.
  >I need to resolve a spectrum accurately at more than 90dB
  >below the level of the fundamental signal.

TC>QUESTIONS
  (3 questions omitted).

I would be interested in any answers you might receive if you would care
to forward a copy to me.
Michael

---
 * QMPro 1.01 41-2370 * <<<<  YUKE!  I hate advertisements!
From: jrs1@tredysvr.Tredydev.Unisys.COM (Jim Saffle)
Newsgroups: comp.dsp,comp.speech
Subject: automatic gain control references
Date: 26 Jan 93 21:38:32 GMT
Followup-To: poster
Organization: Unisys Corporation, Tredyffrin, PA

I am working on an application that requires the use
of automatic gain control to boost the gain on a signal
caused by a quiet talker.  However, references on this
subject seem few and far between.

If you have any leads on info or algorithms for AGC,
please post or e-mail me.  My user name is jrs1 and
I can be found at homer.tredydev.unisys.com


Thanks,
Jim Saffle
Newsgroups: comp.dsp
From: byu@sys.toronto.edu (Benjamin Yu)
Subject: Newbie Question
Organization: University of Toronto
Date: 22 Jan 93 20:39:10 GMT

I have an idea on using sound signals for a multimedia application.  I would 
like to test my idea using the equipment I have.  I have a Creative Lab Sound Blaster 
board.  I need to do some signal processing on the sound file.  My question is that
1) whether anyone knows what kind of analog to digital, digital to analog chips 
   does the sound blaster have?
2) what kind of software can manipulate the files, assuming I can unpack them.
   (I heard of PC DSP but never seen it in our bookstore.)
3) is it reasonable to do any signal processing using the Sound Blaster?  Am I
   wasting my time and I should get another board?  What kind of quality am I
   getting?

Thanks a lot!  
Benjamin Yu
byu@sys.toronto.edu
From: voeg@rz.uni-karlsruhe.de (Tobias Voegele)
Newsgroups: comp.dsp
Subject: Tektronix 2212 a.IEEE488.2 ??
Date: 27 Jan 1993 17:01:36 GMT
Organization: University of Karlsruhe, Germany
Distribution: world
NNTP-Posting-Host: ifh-hp1.bau-verm.uni-karlsruhe.de

Hi all!

I have some problems with programming a Tektronix 2212
Oszilloskope throu an IEEE-488.2 Interface.
The controler card is from National Instruments (AT-GPIB).

When i use this Oszilloskope with the fastest Samplingrate
20Megasamples/sec in the Triggermode SGLSweep it will
take 0.5 Secounds to read the waveform after the received
MAV Bit.
Is there someone who has experince in the Tektronix 2212
and programming the IEEE488.2 Interface of this Skope?
Or is there somone from Tektronix reading this Newsgroup,
who can say me something about the Performance of the
IEEE488.2 Interface in the Tektronix 2212?
thanks in advance

--
tobias voegele
 voeg@rz.uni-karlsruhe.de
 md15@rz.uni-karlsruhe.de

You can respond either to me or to the following adress:

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-                                                            -
Dipl.-Ing. Gerhard Bosch M.Sc.-------voice:(0721) - 608 3118 -
Institute for Hydromechanik            FAX:(0721) - 608 4290 -
University of Karlsruhe                                      -
Kaiserstrasse 12                                             -
7500-Karlsruhe                                               -  
Germany                                                      - 
-                                                            -  
- Internet: bosch@ifh-hp2.bau-verm.uni-karlsruhe.de          -
-   Bitnet: nd07@DKAUNI2.BITNET                              -
-    X.400: S=bosch;OU=ifh-hp2;OU=bau-verm;P=uni-karlsruhe   -
-           A=dbp;C=de                                       -
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
From: gints@prophet.esd.sgi.com (Gints Klimanis)
Newsgroups: comp.dsp
Subject: Re: DSP project: spectrum reversal
Date: 26 Jan 93 20:15:22 GMT
Organization: Silicon Graphics, Inc.
NNTP-Posting-Host: prophet.esd.sgi.com

In article <1k28e0INNddk@fido.asd.sgi.com>, gints@prophet.esd.sgi.com
(Gints Klimanis) writes:
plenty of stuf deleted

|> Changing the sign of every sample is the operation of multiplying the
|> signal by a full amplitude sinusoid at f=fs/2.  This process amplitude
|> modulates the signal out of band such that it aliases perfectly into the
|> base band.

Ooops.  Dropped a word.  First sentence should begin with "Changing the
sign of every *other* sample ...".  NOW, this matches the first
paragraph of my original post.
Newsgroups: comp.dsp,comp.lang.c
From: dandrews@bilver.uucp (Dave Andrews)
Subject: Re: Is this a Legal Way to Access a Specific Address?
Organization: W. J. Vermillion - Winter Park, FL
Date: Sun, 24 Jan 1993 17:14:55 GMT
Keywords: DSP, C, ANSI, Fixed RAM

In article <1993Jan23.042626.991@verdix.com> scotty@verdix.com (Scott R. Chilcote) writes:
> 
>We're programming a device that has a RAM cache at address 809800H.
>
>Is it legal to address this memory in C as follows?
>
>#define ON_CHIP 0x809800
>
>int main(void)
>{
>
>   float *oc_ptr = (float *) ON_CHIP;

SHORT ANSWER: I don't *know* if this is legal.

LONG ANSWER: if I were the king of the forest, I wouldn't define this
as being legal.  While you can do limited integer arithmetic with
pointers (incrementing or decrementing by a constant integer), the
pointers themselves are manipulated by the integer times the sizeof
the pointer type.

So to my mind, if you declared
   float *oc_ptr = (float *) ON_CHIP;
it seems to me that the pointer would actually point to the 0x809800'th
float in memory starting at the lowest addressable location (not
necessarily NULL, BTW).

So in order to do what you want to do "legally", you'd have to figure
out what the ON_CHIP address would be in terms of a contiguous array
of floats.

- David Andrews
  dandrews@bilver.oau.org



Newsgroups: comp.dsp
From: DSPWorld@world.std.com (Amnon Aliphas)
Subject: CALL FOR PAPERS ICSPAT '93 and DSP World Expo.
Organization: The World Public Access UNIX, Brookline, MA
Date: Mon, 25 Jan 1993 17:29:00 GMT


                               CALL FOR PAPERS




    International Conference on Signal Processing Applications & Technology


                         featuring DSP World Expo.




         September 28, 1993 - October 1, 1993, San Francisco Bay Area



               Application Areas:  Automotive
                                   Communications
                                   Computer Architectures
                                   Consumer Products
                                   DSP Machines
                                   DSP Software
                                   DSP Technology
                                   Geophysics
                                   Image Processing
                                   Industrial Control
                                   Instrumentation and Testing
                                   Medical Electronics
                                   Military Electronics
                                   Multimedia
                                   Navigation
                                   Neural Networks
                                   Radar
                                   Telephony
                                   Underwater
                                   Video
                                   VLSI Architectures
                                   
                                   and other applications


 Mail, Fax, e_mail a 400 word abstract for review, no later than April 30,1993.

 to:             DSP Associates
                 18 Peregrine Road
                 Newton, MA 02159

                 Tel: (617) 964-3817 or (617) 964-3195
                 Fax: (617) 969-6689

                 e_mail:  DSPWorld@world.std.com

______________________________________________________________________________

   DSP Associates -- Electronic Engineering Times -- Electronic World News

______________________________________________________________________________
Newsgroups: comp.dsp
From: izhak@ernet.in (S M Izhak)
Subject: I/O for DSP !!
Organization: Giant Meterwave Radio Telescope., TIFR
Distribution: comp.dsp
Date: Thu, 28 Jan 1993 01:07:58 GMT

Hi!
	As I'm not a veteran of comp.dsp, I am not sure whether the
issue of I/O in DSP has been discusse earlier.
	I am interested in a easy chip level solution for interfacing
the ADSP 21020 or and such DSP to standard devices like the SCSI disk,
etc. I am basically interested in getting the maximum sustained I/O
rate for dedicated appilcation in Astronomy on huge volumes of data.
	Thanks in advance to whoever takes time and effort to reply to
this. You could reply to my email address : izhak@gmrt.ernet.in. If
enough users are interested I could send a synopsis of the responses
on the network soon. 
	Hoping to hear from someone who is ready to extend a helping
hand.

Zac
(S.M.Izhak)
NCRA, TIFR (Tata Institute of Fundamental Research)
India



Newsgroups: comp.dsp
From: jeff@is.s.u-tokyo.ac.jp (Jeff McAffer)
Subject: Re: Thanks!
Reply-To: jeff@is.s.u-tokyo.ac.jp
Organization: University of Tokyo / Object Technology International
    GMT
Distribution: comp
Date: Fri, 22 Jan 1993 11:01:14 GMT
X-Bytes: 452

In article <1993Jan21.101900.18786@kei.is.s.u-tokyo.ac.jp> jeff@is.s.u-tokyo.ac.jp (Jeff McAffer) writes:

 >Recently I posted a bit of a rant fest about my frustrations with
 >ISDN.  I would just like to thank everyone who responded.  Nothing was

Oooops!  Obviously I was (?) brain-damaged at the time.
--
ato de, |m        -- "Throughout my life I have sought peace and quiet"
                                                          - Ted Nuggent
From: willis@cs.athabascau.ca (Tony Willis)
Newsgroups: comp.dsp
Subject: FAQ?
Keywords: Faq wanted
Date: 23 Jan 93 03:33:04 GMT
Organization: Athabasca University

Hi,
Is there a FAQ for this group? If yes, could someone please forward
it to me?

Thanks

Tony Willis
Newsgroups: comp.dsp
From: johnk@exlog.com  (John Kingman)
Subject: Instantaneous Frequency Using Phase of Unwrapped Analytic Signal
Keywords: instantaneous frequency, Hilbert transform, analytic signal
Reply-To: johnk@exlog.com
Organization: EXLOG
Date: Fri, 22 Jan 93 15:31:35 GMT



I am working on an instantaneous frequency problem where
instantaneous frequency is defined as follows:

u(t)		signal of interest
v(t)		Hilbert transform of u(t)
z(t)		analytical signal z(t) = u(t) + i*v(t) (i=sqrt(-1))

a(t)		unwrapped argument of z(t)
f(t)		instantaneous frequency f(t) = d/dt[a(t)]/(2*pi)

_______________________________________________

my question concerns a frequency modulated signal (modulated with
a pure tone as follows):

t		time
wc		carrier frequency (radians/sec)
wm		modulation frequency
wd		frequency deviation 

p(t)		phase, p = wc*t + (wd/wm)*sin(wm*t)
u(t) 		modulated signal u(t) = cos(p*t)

_______________________________________________

In playing with this using discreet time series', I have found that in
general, for deviation ratios (wd/wm) >= 1, the unwrapped argument of the 
analytic  function, a(t), is NOT the same as the phase p(t)!  Another way of 
putting this is:

		v(t) .ne. sin(p(t))

I have not bothered to solve the problem explicitly yet but feel fairly
confident that results will confirm my discreet approximation.
____________________________________________

Am I missing something?

Any comments, notes of experiences will be greatly appreciated. 



Newsgroups: comp.dsp
From: yves@mars.dgrc.doc.ca (Yves Jolly)
Subject: Re: books
Reply-To: yves@mars.dgrc.doc.ca
Organization: Communication Research Centre
Date: Tue, 26 Jan 93 15:06:57 GMT

In article 11821@kei.is.s.u-tokyo.ac.jp, jeff@is.s.u-tokyo.ac.jp (Jeff McAffer) writes:
 
> I'm looking for books on signal processing applications (I guess?).
> That is, I have a bunch of abstract data which I would like to treat
> as a signal and apply various SP techniques.  The problem is that I
> know relatively little about the properties of these algorithms.  Thus
> I don't really know what is possible, desireable, easy, hard, ...
> 
> Ideally, I would find a book which had hands-on descriptions like "If
> you have data like this, you can use these N techniques to get X
> effects."  From what I've learned so far, things like filtering,
> correlation, spectral analysis (FFT) and adaptive processing in
> general are of interest in my domain.
> 
> I am not conducting SP research but rather would like to be a user of
> SP.  The math behind it all is a bit off the topic for me but of
> course, I'll try and learn what's necessary.
> 
> Thanks alot again.
> 
> 
> 
> --
> ato de, |m        -- "Throughout my life I have sought peace and quiet"
>                                                           - Ted Nuggent

Get a copy of "Numerical Recipes in C, The Art of Scientific Computing"
		Press, Flannery, Teukolsky and Vetterling, Cambridge
		University Press, 1988.

It is a pretty good cookbook with brief algorithm descriptions and pointers
to the "best" for such and such application.  A C routine is presented for
every algorithm and you can also buy the source disk that contains all
algorithms presented in the book.  I use it when I want a fast solution to
a standard problem.

---
Yves Jolly		Email:	yves@mars.dgrc.doc.ca
Communications Research Centre, Dept. of Communications
P.O. Box 11490, Stn. H, Ottawa, Ont., CANADA  K2H 8S2
Phone: (613) 998-2780		Fax: (613) 990-7987
From: cgra@btma74.nohost.nodomain (Chris Gray)
Newsgroups: comp.dsp
Subject: Emulating Analogue Synthesis on a 56001
Date: 27 Jan 93 15:48:23 GMT
Reply-To: cgra@se.alcbel.be


Hello everybody,

I am interested in using the 56001 in my (not-yet-quite-bought) Atari
Falcon to emulate the sort of things that analogue synths do - you know,
VCAs, VCOs, ADSRs, ring modulators, all that kind of stuff. Most of this
amounts to table lookups and a couple of add-and-multiplies, but I would
appreciate a push in the right direction for the (sinusoidal) oscillator/
filter stuff. I particularly like the kind of circuit which can be a filter
_or_ an oscillator, with a *most* interesting region in between.

DSP books I have seen so far seem to concentrate on doing things that
analogue filter's can't. Cheesy litle filters a` la VCS3 should be dead
easy, but my own attempt at defining one using difference equations seems
to oscillate a bit too well - like explosively :-[

To do what I'd like to do I only have a few tens of instructions to spare
per sample, so going into the FFT domain is not on.

If DSPs are obselete, should I be buying a machine with 80% of its power
in the DSP? Dunno. Falcon flames to U:\dev\null please.

__________________________________________________________________________
Chris Gray        | Any views expressed are those of the author and not of 
cgra@se.alcbel.be | Alcatel Bell, Technology Project Services, the British
Compu$erve:       | Computer Society, Whale and Dolphin Conservation Soc.,
100065.2102       | Scottish Youth Hostels Association, etc. etc. etc.
__________________________________________________________________________
A concept that cannot be expressed tersely is a badly understood concept.
                                                      - Chuck Moore
Newsgroups: comp.dsp
From: TMKT76@waccvm.corp.mot.com (Daniel Fusils)
Subject: Re: 68HC16 C-Compilers
Organization: Motorola
Date: 26 Jan 1993 15:27:58 MST

>Forgive me if this is not the correct newsgroup to post to, but I
>could not think of any better one.

Even if the 68HC16 has some low DSP perfs (16bit MAC is 720 ns @ 16MHz),
i can be considered as a DSP.

>I simply wonder if there are any C-compilers available for the 68HC16
>yet. I have been in contact with IAR Systems who developed a compiler
>for the 68HC11 and the 8751, but they say that they have not yet
>concidered developing a compiler for the 68HC16.

True. You'd better try:

COSMIC (France)
TEL +33 1 43 99 53 90    FAX +33 1 43 99 14 83

HiWARE (Switzerland)
TEL +41 61 331 x7151  FAX x1054

Introl (USA)
TEL 414/327 7171  FAX 414/327 7734
Newsgroups: comp.dsp
From: gao@eecg.toronto.edu (Xiangyang Gao)
Subject: Sound effects codes
Date: 24 Jan 93 21:29:06 GMT

Dear Netter,

I want to use my DSP platforms from Motorola and Analog Devices to
play with special sound effects. I am looking for sound effects codes
(C or assembly) for either DSP56001 or ADSP2101. Any suggestions?
Commercial ones are oaky as long as they are affordable. I don't
plan to spend too much money for this fun project.

Thanks

Frank
From: chieh@dvs.com (Baldwyn Chieh)
Newsgroups: comp.dsp
Subject: Reed Solomon algorithm
Date: 27 Jan 93 22:53:59 GMT
Organization: Digital Video Systems
X-Newsreader: TIN [version 1.1 PL6]

I'm looking for any available 'C' code or algorithms for Reed-Solomon
coding.  MY primitive polynomial is: x^8 + x^4 + x^3 + x^2 + 1.  I don't
have a good understanding of Reed-Solomon codes at present.  I'm just
looking for a way I can implement them for now.
 

Thanks in advance,

Baldwyn Chieh
Newsgroups: comp.dsp,comp.lang.c