HDTenEightyP/NetNews huggingface dataset:
From: drues@iastate.edu (Michael E Drues)
Subject: Re: Polhemus ISOTRACK/3-SPACE and VIRTUAL REALITY
Reply-To: drues@iastate.edu
Organization: Dept. of Biomedical Engineering, Iowa State Univ.
Date: Tue, 14 Apr 1992 22:39:46 GMT

In <1992Apr7.031033.19729@njitgw.njit.edu> andrews@rehab.njit.edu (John Andrews) writes:
>     I am looking at using a 3-SPACE digitizer from Polhemus
>     (also called ISOTRACK, Kaiser Aerospace) and am looking
>     for any information on this system or perhaps similar
>     systems from competing companies.

I bought one of these systems for my research several months ago.
It works well but is very sensitive to electronics/metal objects in the
area.  The software that comesw with it is pretty lame.  You have to 
write your own code (in C) to use it to do anything useful.  It is being
used in a variety of applications, not just VR.

The Isotrak gives location (x,y,z) AND orientation (pitch, roll, yaw) for 
a total of 6 degrees of freedom.  I don't see how you could get all that
using ultrasound (especially the 3 angles).

>     Has anyone any experience with this? Somethign similar?
>     A better way to locate and track something in 3 dimen-
>     sions? This system will run me over $10,000, so any and
>     all responses greatly appreciated.

No way. The base system (1 source and 1 probe) goes for about $3300.  
If you ask them right, who can buy a used sytem (same warantee) for half
that.  

If you want more info, let me know.

mike

-- 
Michael Drues                              Dept. of Biomedical Engineering
Internet:drues@iastate.edu                        1146 Veterinary Medicine
BITNET:v2.med@isumvs.bitnet                          Iowa State University
Office:(515)294-6520(or 4-1771) Home:(515)233-5652        Ames, Iowa 50011
Newsgroups: comp.dsp
From: johnf@oakhill.sps.mot.com (John Fisher)
Subject: Re: Motorola address, please?
Reply-To: johnf@otis.UUCP (John Fisher)
Organization: Motorola Inc., Austin, Texas
Date: Wed, 15 Apr 1992 13:44:49 GMT

In article <garp.703256827@isy.liu.se> garp@isy.liu.se (Johan Garpendahl) writes:
>	
>I wonder if anyone has an address or phone number to Motorola.
>I'd like to contact them about their gcc implementation.
>

The mailing address for Motorola's DSP Operation is:

   Motorola Inc.
   Digital Signal Processor Operation
   Mail Drop OE314
   6501 William Cannon Drive, West
   Austin, Texas  78735-8598
   USA

Telephone:

   (512) 891-2030  DSP Marketing
   (512) 891-3230  DSP Applications Helpline
   (512) 891-3771  Dr. BuB BBS, 8 data, no parity, 1 stop


-- 
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
John C. Fisher                                                 (512) 891-2305
Motorola DSP Operation                                    FAX  (512) 891-3877
From: mcmahan@netcom.com (Dave Mc Mahan)
Subject: Re: karaoke: How to remove voice from music + voice ?
Date: Tue, 07 Apr 92 15:07:41 GMT
Organization:  Dave McMahan @ NetCom Services 
Distribution: comp.dsp

 In a previous article, zong@imec.UUCP (Zong Liang WU) writes:
>Hi net-landers,
>
>I am interested in removing voice from background 
>accompagning music. The idea is that you have a CD of
>popular songs, if you can remove the singer's voice, 
>you can enjoy it with your own voice as a super star 
>(like with karaoke).

Here in the USA, they sell small boxes that claim to be able to accomplish
this task.  My understanding of how they work follows.  I have no idea if
they actually do work, or how well.

When a song is recorded, the standard method is to create a stereo signal.
The right channel has some instruments, the left channel has some others,
but the voice is placed on both channels.  By inverting one channel and
summing it with the other channel, a box will subtract out all signals common
to both channels.  This can tend to remove some of the instrumental background,
but it is supposed to do a fairly good job at removing all of the voice.

I have never heard one of these boxes, but they are advertised quite often.

>zong liang Wu
>zong@imec.be
>VMDS-IMEC
>Kapeldreef 75
>3000 Leuven
>Belgium
>                                                       

  -dave

-- 
Dave McMahan                            mcmahan@netcom.com
					{apple,amdahl,claris}!netcom!mcmahan

Xref: sparky alt.binaries.sounds.d:727 comp.dsp:1107
From: lance@unix386.Convergent.COM (Lance Norskog)
Newsgroups: alt.binaries.sounds.d,comp.dsp
Subject: Re: The audio formats guide (version 1.4)
Date: 10 Apr 92 18:20:37 GMT
Organization: Unisys/Convergent, San Jose, CA

martinjp@cs.washington.edu (John Martin) writes:

>I am diving into a new project and I need some pointers...
>I am will be designing a system that needs to generate a
>'sound', where the frequency of the sound depends on a 6-bit
>digital value.  I haven't tried to build a system like this before
>so any advice will useful.....


Easy: You generate a sine wave table for each 6-bit value which
is that many samples long + 2.  I.e. the 0 table is two samples.
Each table starts at the center of the range and does a complete
sine wave in the length of the table.  Each sine wave travels the
full length of your numeric range.  Assuming you use unsigned bytes:
	table 0: 255 0
	table 1: 128 255 0
	table 2: 128 255 128 0
	...
	table 63: 128 132 136 ...

Single-sound generation: when a tone starts, you start an index into
its table starting at 0.  For each output sample, you just march through
the table, outputting the sample at each index.  Wrap to the beginning
of the table when you hit the end.

Polyphonal sound:
When a frequency starts, you start an index into its table.  For each
output sample, you add up all the table entries and divide by the
number of frequencies being generated.

You probably don't care about phasing.  That just determines where you
start in the sine table, and is only important in stereo sound.

Volume: your volume value for each frequency goes from 0 to 1.
Multiply each table entry by the volume.

Ramp-up/ramp-down:  if you start and stop the sounds at full volume,
you'll get a loud click in the speaker.  You need to start each sound
softly (low volume value) and gradually increase to the required volume
over the first X number of samples.

Caution: loud sine waves can damage your speakers.  

Basic music theory: if multiple frequencies are powers of two,
the resulting tone will sound "nice".  If not, it won't.

Tech tip: always have deadman switch in the speaker circuit,
so that you have to actually hold it down to get sounds.
Debugging sound software without this can be a very painful experience.
Trust me on this one.

Check out "Musical Applications of Microprocessors" by Hal Chamberlain.
It's a nice big book, ten years old, for homebrew sound hacking on
personal micros.  Very very informative with a minimum of large equations
and a maximum of software hacks.

Enjoy!

Lance Norskog
From: aok@messier.berkeley.edu (Alan Kamas)
Newsgroups: comp.dsp
Subject: Re: Ptolemy software
Date: 17 Apr 92 01:26:14 GMT
Article-I.D.: agate.sl9fmINNa2f
Organization: University of California, Berkeley
NNTP-Posting-Host: messier.berkeley.edu

In article <1992Apr16.213507.1200@sol.UVic.CA>, weixiu@edwin.UVic.CA (Weixiu Du) writes:
|> In article <skk5dINN719@agate.berkeley.edu>, jbuck@forney.berkeley.edu (Joe Buck) writes:
|>
|> > Sources and binaries for each of these three platforms can be FTP'd once
|> > you sign the agreement.
|> > 
|> > Joe Buck	jbuck@ohm.berkeley.edu
|>  
|> I have looked at the agreement. It seems to me that Ptolemy can
|> only be leased to "Organizations". If I want to  install it
|> on my supervisor's machine  for the purpose of research in
|> digital signal processing, who is supposed to sign the agreement.
|> The president of the university or the department head or my 
|> supervisor or simply just myself, a postdoc at ECE department.
|>  
|> ... weixiu du 


If you are a member of the organization (and as a post-doc, I'd assume you are),
feel free to sign the form and send it in.

Remember, we are giving Ptolemy away.  The simple form is the just the fastest
method we have to give out Ptolemy while still keeping the UC bureaucracy happy.

If you have any questions, please send email to: ptolemy-request@ohm.berkeley.edu
and I'll be happy to answer them.

       
         - Alan Kamas
           Ptolemy Project Coordinator
From: jagan@cacs.usl.edu (Jaganmohan Yeccaluri)
Newsgroups: comp.dsp
Subject: Request for a Paper in CVGIP.
Date: 8 Apr 92 05:30:12 GMT
Distribution: usa
Organization: The Center for Advanced Computer Studies, Univ. of Southwestern Louisiana, Lafayette.


Hi Netters,

I'm looking for the following paper which appeared in CVGIP : Graphical 
Models and Image Processing - Vol.53 p.324-329 July'91.

Wuthrich, C.A and Stucki, P. : An algorithmic comparison between 
square and hexagonal based grids.

I badly need this paper and would be thankful if anyone can make a 
copy and send it to me. I will bear the expenses for photocopying 
and mailing. Please send me an e-mail for my postal address. I don't 
want too many copies of this paper in my mailbox.

Thank you

- jagan

e-mail : jagan@cacs.usl.edu
Tel. no : (318) 237-7442
Newsgroups: comp.dsp
From: zaka@ee.eng.ohio-state.edu (Zaka U. Bhatti)
Subject: dsp programming query
Originator: zaka@icarus.eng.ohio-state.edu
Organization: The Ohio State University Dept of Electrical Engineering
Date: Thu, 16 Apr 1992 19:28:47 GMT

Hello fellow dsp-netters,

    I wanted to do some interrupt driven programming on our ATT DSP32c
using the C language. Would anyone be so kind as to share an example
or two with me on how to write a interrupt driven program in C on the
DSP32c. 

    I already have an example in assembly but all of my other code is in
C, plus I would like to write the whole experiment in C. I cant get a
handle on how to do interrupts in C. I was unable to find it in the
manuals that are available to me.

    Thankyou again.

zaka-=-
Newsgroups: comp.dsp
Subject: re : Auto Gain Control with DSP ??
From: burdet@eig.unige.ch
Date: 9 Apr 92 16:44:54 +0200
Organization: University of Geneva, Switzerland
Nntp-Posting-User: 8

From:	IN%"bhanafee@ads.com"  " (Brian Hanafee)"  8-APR-1992 20:46:53.01
To:	IN%"burdet@eig.unige.ch"
CC:	
Subj:	Auto Gain Control with DSP ??

Received: from uni2b.unige.ch (UGUN2B) by eig.unige.ch (PMDF #12412) id
 <01GIM9GDKBQ8A3CI9X@eig.unige.ch>; Wed, 8 Apr 1992 20:46 WET-DST
Received: from mailun2a.unige.ch by uni2b.unige.ch (PMDF #12412) id
 <01GIM9GEM680008AF3@uni2b.unige.ch>; Wed, 8 Apr 1992 20:46 WET-DST
Date: Wed, 8 Apr 1992 20:44:18 +0200
From: " (Brian Hanafee)" <bhanafee@ads.com>
Subject: Auto Gain Control with DSP ??
To: burdet@eig.unige.ch
Message-id: <9204081844.AA05041@deimos.ads.com>
X-Envelope-to: burdet
X400-Originator: bhanafee@ads.com


>Hello
>
>I'm working on audio-prothesis and i have to implement an Auto Gain Control
>algorithm using DSP 56000 and using classical analog chip.

I've done this in the video domain.  I'm not sure from your posting
what you are interested in, but if you have more specific questions,
please email them.  The  system I built comprised an input A/D
converter, and three D/A converters on the output.  The three D/As
controlled an adder to zero out the pedestal voltage, a multiplier to
provide the gain, and another adder to add the desired pedestal back.
The gain control lagged by one video frame (e.g. gain for a given
frame was determined by the histogram of the previous frame), with
some hysteresis.

-- Brian


Brian Hanafee                         Advanced Decision Systems
bhanafee@ads.com                      1500 Plymouth Street
(415) 960-7300                        Mountain View, CA 94043-1230
From: pringle@yoyo.cc.monash.edu.au (GLen Pringle)
Newsgroups: comp.dsp
Subject: Re: image restoration
Date: 14 Apr 92 23:55:58 GMT
Organization: Monash University, Melb., Australia.

In <1992Apr13.233111.15479@massey.ac.nz> news@massey.ac.nz (USENET News System) writes:

>In article <1992Apr13.133510.5562@iplmail.orl.mmc.com>, jeanv@iplmail.orl.mmc.com (Jean Vasicek) writes:
>> 
>> Has anyone tried applying neural nets to solving the inverse problem?
>>  
>Yes, it is, I believe, a very active area of research. I haven't been 
>involved myself. As far as I know, this approach has been taken for
>pattern recognition rather than for low level vision.
>
>For example, neral nets have been used to recognise hand written zip-codes.
>
>Terry Moore Massey University

"Image Restoration Using a Neural Network" by Yi-Tong Zhou et al.,
IEEE Trans on Acoustics, Speech and Signal Processing, Vol 36 No 7
July 1988 p1141-1151

GLen

-----------------------------------------------------------------------------
|  GLen Pringle                       |  Research is what I'm doing when    |
|  Monash University, Australia       |    I don't know what I'm doing.     |
|  pringle@yoyo.cc.monash.edu.au      |           - Bert Whitney            |
-----------------------------------------------------------------------------
From: galetti@uservx.plk.af.mil
Newsgroups: comp.dsp
Subject: INFO please on A.D.'s ADSP 2111
Date: 10 Apr 92 17:33:37 GMT
Article-I.D.: uservx.1992Apr10.173337.32795
Organization: Phillips Laboratory - Kirtland AFB

If any of you have ever used or heard anything about the Analog Devices 
ADSP 2111, could you please give me your opinion?  I'm particularly interested
in specific applications that the chip performs best, and the availability of
programming tools for the chip, as well as how difficult it is to program.

Many thanks in advance,

-Ralph

-- 
  ___________________________________________________________________________
 /   Ralph Galetti                  Internet:   galetti@uservx.plk.af.mil    \
|    PL/LTT                         Interests:  computers, music, computers   |
|    Kirtland AFB, NM 87117-6008                and music, golf, sleep.       |
 \"What's he like?  It's not important--Particle Man." - They Might Be Giants/
Newsgroups: comp.dsp
From: thssrkr@iitmax.iit.edu (Raghunath K Rao)
Subject: FFT routines in Pascal
Organization: Illinois Institute of Technology
Date: Thu, 16 Apr 92 19:27:51 GMT

Does anyone out there have routines for FFT (1D and 2D)
in Pascal? I think they are available in the Numerical Recipes
for Pascal book, but don't have access to a copy. Can someone
please mail me these routines?

Thanks in advance.

K. Raghunath Rao

---------------------------------------------------------------------
                                  _____         ___        _______
K. RAGHUNATH RAO                 /____/ \      /__/\      /______/\
email : thssrkr@iitmax.iit.edu  |  __ \ /|    / _ \ \    /  ___  \ |
sleepy   (res) : (312)791-9428  | |__) |/    / /_\ \ \   | / | \ | |
sleepier (off) : (312)567-3407  | __  /\    |  ___  | |  | | | | | |
                                | | \ \ \   | / | \ | |  | | |_| | |
It is the intonation and not    | | |\ \ \  | | | | | |  | \/__/ |/
the intention that matters!!    |_|/  \_\/  |_|/  |_|/    \______/ 

---------------------------------------------------------------------
Xref: sparky comp.dsp:1084 sci.electronics:8191
From: lordSnooty@cup.portal.com (Andrew - Palfreyman)
Newsgroups: comp.dsp,sci.electronics
Subject: Re: Polhemus ISOTRACK/3-SPACE and VIRTUAL REALITY
Date: 7 Apr 92 19:02:42 GMT
Organization: The Portal System (TM)

You might also want to try the new miniature Gyro (sorry: no address)
if you can tolerate one degree per minute drift. Also, there are one or
two 3-D mice out there, one I think from Logitech.
 --------------------------------------------------------------------------
| lord snooty @the giant | wolfpack, silver, down to the water             |
| poisoned electric head |              andrew palfreyman@cup.portal.com   |
 --------------------------------------------------------------------------
From: raoul@eplunix.UUCP (Nico Garcia)
Newsgroups: comp.dsp
Subject: Re: IP numbers for Universities involved in Medical Image Processing
Keywords: Medical Image processing
Date: 14 Apr 92 13:02:44 GMT
Organization: Eaton-Peabody Lab, Boston, MA

In article <fhoare.3@eleceng.uct.ac.za>, fhoare@eleceng.uct.ac.za writes:
> We are interested in communicating with the following centres:
> 
> We would appreciate the internet numbers of any, or all of the above, and 
> of any other institutions working in medical image processing.

We're not an Internet site (yet), but a uucp site. Try the address below and
I'll forward to our people involved in CT and MRI analysis work.  Are most
of these sites already on the Internet, by the way?
-- 
			Nico Garcia
			CIRL/MEEI
			eplunix!raoul@eddie.mit.edu
Newsgroups: comp.dsp
From: gao@eecg.toronto.edu (Xiangyang Gao)
Subject: Review of DSPs
Date: 10 Apr 92 14:42:27 GMT

Dear DSP lovers,

I guess many of us are interested in an overview of the digital
signal processors available on the market. I am willing to do
a review for the net. To do a good job, your help is appreciated
since I cannot be familiar with all of them as you can imagine.

I would appreciate it if you could send me your opinions on the
DSPs you are familiar with. Here are some aspects you may want to
consider:
Basic structures, for example, bus width, on-chip memories, speed
Features, differences from other DSPs
Applications they are suitable, please give reasons for the suitability.
Ease of programming
Software support
....
....

Thanks!

gao@eecg.toronto.edu

Frank
From: izahi@bsc.no (Raul Izahi Lopez Hernandez)
Newsgroups: comp.dsp
Subject: Re: karaoke: How to remove voice from music + voice ?
Date: 15 Apr 92 11:39:03 GMT
Distribution: comp.dsp
Organization: Bergen Scientific Centre, Bergen, NORWAY

In article <g9pj_8-.mcmahan@netcom.com> mcmahan@netcom.com (Dave Mc Mahan) writes:
>
> In a previous article, zong@imec.UUCP (Zong Liang WU) writes:
>>Hi net-landers,
>>
>>I am interested in removing voice from background 
>>accompagning music. The idea is that you have a CD of
>
>Here in the USA, they sell small boxes that claim to be able to accomplish
>this task.  My understanding of how they work follows.  I have no idea if
>
>When a song is recorded, the standard method is to create a stereo signal.
>The right channel has some instruments, the left channel has some others,
>but the voice is placed on both channels.  By inverting one channel and
>summing it with the other channel, a box will subtract out all signals common
>to both channels.  This can tend to remove some of the instrumental background,
>but it is supposed to do a fairly good job at removing all of the voice.

Some material deleted...

   I built one of those machines about four years ago and sold it as a stereo
enhancer. The stereo information is "difference" information so if you add to
each channel the "center" information you improve the stereo perception. This
device also tended to diminish or eventually eliminate the voice since it
subracted the centre information, however the quality of the outcoming music
was more an echo with a "space-like" quality than the original instruments
without music. It was a very nice add-on though when a reasonable amount of
"difference" signal is fed into the front loudspeakers or completely into some
"back" loudspeakers.
   It is very hard to extract ONLY the instruments. What karaoke companies do
is get tapes of the instrumental channels of a 16-channel tape of a performance
which has one,two or three channels ONLY for voice and not use them in the final
mix.

-- 
         -----> All opinions expressed here are my own, not IBM's <-----
Raul Izahi Lopez	IBM Bergen Environmental Sciences and Solutions Centre
izahi@bsc.no	        Izahi Engineering is here !!!	
Newsgroups: comp.soft-sys.andrew
From: rdew@alw.nih.gov (Bob Dew)
Subject: Re: Makefile problem on ULTRIX
Organization: National Inst. of Health, DCRT, CSL
Date: Thu, 16 Apr 1992 18:55:03 GMT

In article <1992Apr16.171859.4454@ornl.gov>, jnm@tdum.CTD.ORNL.GOV (Jamey Maze) writes:
|> I recently built ATK on SunOS will few problems, so I decided to do
|> the same on ULTRIX, but I'm having trouble making it to 1st base. When I
|> do make with any target, it complains about a syntax error in line 130,
|> with is where the first variable (AFSBASEDIR) gets redefined from
|> site.mcr. Can someone tell me what I've done wrong?
|> 
|> Here's my site.mcr:
|> 
|> 	AFSBASEDIR = /usr/afsws
|> 	XUTILDIR = /usr/local/X11R5/bin
|> 	XINCDIR = /usr/local/X11R5/include
|> 	XMKFONTDIR = /usr/local/X11R5/bin/mkfontdir
|> 	XLIBDIR = /usr/local/X11R5/lib
|> 	XFC = /usr/local/X11R5/bin/bdftopcf
|> 	RESOLVLIB = /usr/lib/libresolv.a
|> 


PMAX is picky about white space in its Makefiles.  Remove the tabs from your site.mcr,
and you should go further.

Bob
From: rr2b+@andrew.cmu.edu (Robert Andrew Ryan)
Newsgroups: comp.soft-sys.andrew
Subject: Re: a little ditroff help?
Date: 6 Apr 92 22:23:32 GMT
Organization: School of Computer Science, Carnegie Mellon, Pittsburgh, PA

Excerpts from netnews.comp.soft-sys.andrew: 6-Apr-92 a little ditroff
help? Jamey Maze@tdum.CTD.ORNL (1022)

>  I'm not up on ditroff (and neither is my friend), so can someone tell
> me how to make dieqn/ditroff produce a ditroff intermediate file? Or
> another option would be a postscript previewer (hopefully free).

I'm not very knowledgeable about ditroff either I'm afraid.  There is a
free postscript previewer called ghostview though.  It is a GNU program
built upon ghostscript.

-Rob Ryan
From: dl2n+@ANDREW.CMU.EDU (Daniel Edward Lovinger)
Newsgroups: comp.soft-sys.andrew
Subject: Re: non-unix clients
Date: 6 Apr 92 14:36:28 GMT
Distribution: world
Organization: The Internet

Adam Stoller <ghoti+@andrew.cmu.edu> writes:
> You might want to send mail to <special-projects@andrew.cmu.edu> - they
> are a separate and distinct organization from the ATK Consortium - but
> responsible for the current PC and Mac AMS application being used at
> Carnegie-Mellon University - something called "EZMail" (please note -
> this has nothing to do with the ATK "EZ" multi-media editor)

	A few notes ... EZMail is on UNIX boxes or PCs, while MacMail
is the Mac side. There is no EZMail on the Macs. MacMail is also being
rewritten at the moment ... completetion date uncertain at this point,
but most likely sometime this summer. Both interfaces use/will use a
common server which runs on the UNIX side.

						dan
From: guy@Auspex.COM (Guy Harris)
Newsgroups: comp.soft-sys.andrew
Subject: Re: ATK Release plans
Date: 14 Apr 92 01:35:35 GMT
Organization: Auspex Systems, Santa Clara

>The CD-ROM will include all sources and complete object trees for the
>IBM RS/6000, HP 700 Snake,

Are the Snakes the only HP-PA machines running HP-UX 8.0?  If not, will
the Snake binaries run on other HP-PA machines running 8.0?  (I'm
assuming you require 8.0's dynamic linking.)

> DEC PMAX,

And, presumably other DEC MIPS-based machines.

> and Sun 4.

And, presumably, other SPARC-based machines running SunOS 4.x. 
("champion.auspex.com", as cited in the "Nntp-Posting-Host" header, is a
SPARC-based machine running SunOS 4.x, but it ain't a Sun-4, or any kind
of Sun - and it *can* run ATK.  No prizes for guessing what kind of
machine it is.... :-))

(I.e., using reasonably inclusive names for families of machines is a
Good Thing, as in the three examples above.)

>(Hint: Join now; help ensure there will be further updates ;-)

I would, if you'd allow individuals to join, but when I asked about it,
you indicated there wouldn't be any provisions for that.  I'd might even
be willing to some non-negligible amount, being a typical overpaid
underworked Silly Valley UNIX weenie.... :-)
From: nigel@CITI.UMICH.EDU (Nigel Hinds)
Newsgroups: comp.soft-sys.andrew
Subject: signoff
Date: 8 Apr 92 15:22:44 GMT
Article-I.D.: andrew.Added.Idskzuu00UkTAMck8J
Organization: The Internet


please remove me from this list.