HDTenEightyP/NetNews huggingface dataset:
From: ericj@hwcae.Honeywell.COM (Eric Jacobsen)
Subject: Re: Halving sample speed while keeping pitch
Organization: Honeywell, Air Transport Division; Phoenix, AZ
	<1992Aug25.155155.20785@kong.gsfc.nasa.gov>
	<1992Aug26.133525.26944@vlsi.polymtl.ca>
	<1992Aug26.134200.27011@vlsi.polymtl.ca>
Date: Thu, 27 Aug 1992 16:11:48 GMT

In article <1992Aug26.134200.27011@vlsi.polymtl.ca> sevigny@vlsi.polymtl.ca (Benoit Sevigny) writes:

   To half the speed, simply overlap your FFTs by 512.

To clarify: the initial spectrogram FFTs overlap 50% in time. This does
sound like a good way to do it, but I wonder about boundary effects
when you transform back to the time domain. Is this something you've
actually had experience with, particularly with speech?

   Of course you can transpose by any factor by spacing your FFT's starting
   point by x/(FFT's length) where x is your transposing factor

Ayup, pretty cool, assuming it works. If it does it offers a nice
solution to the problem. It might be better to use Hartley transforms
instead of Fourier transforms, though, to avoid real->complex->real
conversion problems.

--
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
* Eric Jacobsen        Honeywell Inc.                           *
|     1-602-436-3941   Commercial Flight Systems, Air Transport |
* HVN       436-3941   US Mail: P.O. Box 21111, MS 2Q34C1       *
| FAX 1-602-436-1310   Phoenix AZ 85036-1111                    |
* INet: ericj@hwcae.honeywell.com                               *
| UUCP: uunet!hwcae.honeywell.com!ericj@uunet.uu.net            |
* The opinions expressed are my own and therefore better        *
| thought out than my employer's.                               |
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
Newsgroups: comp.sys.amiga.audio
Subject: Re: Techno mods (was Re: U4ia - What's happenin'?)
From: Michael Whitten <M-WHIT2@UMINN1.BITNET>
Date: Monday, 24 Aug 1992 08:30:25 CST
Organization: University of Minnesota - Computer & Information Services

>U4ia.........waiting for the flame war and the line shouting at me for being
>conceited and ignorant. Well mateys, don't waste your breath.  I owe you nothi
>g.  Nothing at all.

You left out whiney. And nobody owes anybody anything on the nets.

  ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  +          Michael D. Whitten M-WHIT2@VM1.SPCS.UMN.EDU                 +
  +                         M-WHIT2@UMINN1                               +
  ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++




Newsgroups: comp.sys.amiga.audio
From: fr-hed@proxxi.se (Fredrik Hedlund)
Subject: Poseidon music disx via FTP ?
Organization: proxxi
Date: Sun, 30 Aug 1992 19:25:58 GMT

Hi netfolks!

Anyone out there knows if there is some site accepting anonymous FTP with
some of the "Poseidon music" discs ?

Thanks !

fr-hed@proxxi.se
From: doug@dsij.uucp (Doug Johnson)
Newsgroups: comp.sys.amiga.audio
Subject: FFT questions
Date: 30 Aug 1992 08:18:28 GMT
Organization: Not an Organization


  I am trying to test a FFT algorithm from Hal Chamberlin's 'Musical
Applications of Microprocessors'. I copied the BASIC subroutine some time
ago, and I can't get my hands on the book anymore.
  So far I've been using it as a method of synthesis. From the discussion
here, it sounds like it has more potential. What other types of sound
processing is it used for besides frequency shifting?

--

Doug Johnson		  *	Q: What do you call a tornado with long hair
Windsor, ON		  *	and boils?
Canada			  *	A: A cysted twister.
Newsgroups: comp.sys.amiga.audio
From: ramid@nyx.cs.du.edu (Rudy Amid)
Subject: U4ia who are you?
Summary: donation but where? :>
Organization: University of Denver, Dept. of Math & Comp. Sci.
Date: Mon, 31 Aug 92 21:30:10 GMT


U4ia,
 
  What is your real name so I can write it down on the cheque?
 
!Rudy
Newsgroups: comp.sys.amiga.audio
Subject: Re: Top 10 Mods
From: gnat@kauri.vuw.ac.nz (Nathan Torkington)
Date: Tue, 1 Sep 1992 03:19:05 GMT
Organization: Contract to CSC, Victoria Uni, Wellington, New Zealand

In article <1992Aug31.004732.29763@dartvax.dartmouth.edu> abs0@coos.dartmouth.edu (Kelvin Leung) writes:

> Here's mine:
>
> 1) Japanese Intentions		- U4ia
> 2) Don't Say Goodbye			- U4ia
> 3) Fairy lights			- U4ia
>
> As you can see, I am an U4ia fan... I hope he doesn't give up on
> music.

He does take donations, you know.

Nat
Newsgroups: comp.sys.amiga.audio
From: rtsumn01@ulkyvx03.louisville.edu (Shaitan)
Subject: Dumb question!
News-Software: VAX/VMS VNEWS 1.4-b1  
Organization: University of Louisville
Date: Thu, 3 Sep 1992 01:08:00 GMT

My question is this:  how do mods relate to digitized data?  Are there
digitizers which save a file in a format which can be played by a mod player?
How is digitized data converted to a format for use in mods?
I would guess that these would be very simple questions for the experienced
(which I'm not), and I thank you for furthering my education :)

--Shaitan--
From: kkrebs@amilink.UUCP (Ken Krebs)
Newsgroups: comp.sys.amiga.audio
Subject: Re: Music programs ?
Date: 4 Sep 92 16:00:23 GMT
Reply-To: amilink!kkrebs@citrus.sac.ca.us (Ken Krebs)
Organization: Sacramento Amiga Computer Club - Sacramento, CA
X-NewsSoftware: GRn 1.16e (7/4/92) by Mike Schwartz & Michael B. Smith

In article <52874@dime.cs.umass.edu> barrett@snoopy.cs.umass.edu (Daniel Barrett) writes:
> 	BTW, I am sick of the lack of notation programs on the Amiga, and I
> have decided to do something about it myself.  By December, there might be
> another alternative on the Amiga.
> 
>                                                         Dan
> 
>  //////////////////////////////////////\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
> | Dan Barrett -- Dept of Computer Science, Lederle Graduate Research Center |
> | University of Massachusetts, Amherst, MA  01003  --  barrett@cs.umass.edu |
>  \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\/////////////////////////////////////


Are you going to adhere to the proposed CMUS-IFF standard by Talin?  If you
don't have it - I can send it to you..


-- 
*********** NewOrderDepecheModeUltravoxViolentFemmesKillingJoke |Amiga 3000|
*Ken Krebs* SkinnyPuppyLaTourBauhausBookOfLoveModernEnglishB52s |25Mhz/6Meg|
*********** FishBoneBigCountryJoyDivisonSiouxsie&TheBansheesXTC |Multitask!|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
       UUCP: uunet!csusac.ecs.csus.edu!citrus!amilink!kkrebs
   InterNet: amilink!kkrebs@citrus.sac.ca.us or: kkrebs@citrus.sac.ca.us
Newsgroups: comp.sys.amiga.audio
From: taaustin@vaxb.acs.unt.edu
Subject: TALK.LHA *FOUND*
Organization: University of North Texas
Date: Thu, 3 Sep 1992 03:20:04 GMT

talk.lha has been located!
 
wuarchive ---> systems/amiga/incoming/audio
 
Good luck,
 
Terry
From: kent@swrinde.nde.swri.edu (Kent D. Polk)
Newsgroups: comp.sys.amiga.audio
Subject: Re: Halving sample speed while keeping pitch
Date: 28 Aug 92 17:40:25 GMT
Organization: Southwest Research Institute, San Antonio, Texas

In article <1992Aug25.155155.20785@kong.gsfc.nasa.gov> arensb@kong.gsfc.nasa.gov (Andrew Arensburger - RMS) writes:
>ericj@hwcae.Honeywell.COM (Eric Jacobsen) writes:
>
>	I did this thing once, by chopping the original signal into 50-
>sample segments. The segment size should be longer than the wavelength
>of the signal, but short enough to be almost unnoticeable. Then just play
>each segment twice, so that
>		"hello world"
>becomes
>		"hheelllloo  wwoorrlldd"
>
>I didn't conduct an extensive study of appropriate segment lengths or
>sampling rates, but it seemed to me that slowing down human speech in this
>way worked fairly well (sounded like someone speaking verrrry slowwwly,
>albeit a bit choppy), but made musical instruments sound like hell.

You have hit on some very intriguing aspects of how the aural system handles
events. If someone is interested in pursuing this type of solution to the
problem, I have some references that might be of use. I have been studying
the problems associated with auralization of waveform data (obtaining
information from waveforms aurally) for several years now. I won't go into
detail here, but I use high-speed repetition of small signal segments to
enhance comprehension as well as to place signal information in a certain
'context', and it works very well under the correct circumstances. Sample
rates and segment lengths are critical aspects which can completely alter the
perceived information.

I would say that the key issues here are to get a handle on how auditory
streaming works and then understand what categories your sounds fit into so
you can set the correct sample lengths for the desired effects.
Unfortunately, I haven't worked much with speech, but from I have read and
seen, speech would be handled the easiest with this method. Certainly the
method described for speeding up speech is a 'picket fence' phenomenon where
contextual information is heavily relied on by the aural system to fill in
the missing signal elements. Have played a bit with music containing singing
though. Very interesting results.

I think you would find that a little masking would help improve the
comprehension for both speech and music, though I expect that the music
segment lengths would have to be a little different for each contributing
sound source.  (Not very easy :^). 

Oh yes. I use "The Web Data Acq. and Signal Processing Suite" for this
research. If you have tried out the demo and wondered what all those strange
options in the 'Play' filter were for... (Gotta put a plug in for Pete and
Dave :^)

Kent Polk: Southwest Research Institute
Internet : kent@swrinde.nde.swri.edu
UUCP     : $ {cs.utexas.edu, gatech!petro, sun!texsun}!swrinde!kent
Newsgroups: comp.sys.amiga.audio
From: taaustin@vaxb.acs.unt.edu
Subject: TALK.LHA where?
Organization: University of North Texas
Date: Wed, 2 Sep 1992 03:10:29 GMT

Does anyone know of a FTP site that has the program

talk.lha

????
 
It is supposed to be a sound synthesis program that will use
digitized phonemes.
 
This sounds FANTASTIC!!!!!!!
 
so.... where can I find it?!?!?!?!?!?!?
 
Terry
 
taaustin@vaxb.acs.unt.edu
From: ccsw@bristol.ac.uk (EthaStorm)
Newsgroups: comp.sys.amiga.audio
Subject: Re: HELP : CONVERTING MOD.
Date: 2 Sep 92 08:34:47 GMT
Organization: University of Bristol, England

In article <1992Aug30.205732.14980@st-andrews.ac.uk> pac1@st-andrews.ac.uk (Paul Andrew Carey) writes:
>Is there a program which will let you do the reverse process.
>
>ie. Take an Amiga mod. and copy it on to a PC format disk.
>

Confused?? You will be!!! Paul, MSH is used to handle IBM 9 sector disks on the
good ole Amiga. It's got nothing to do with formats of MUSIC programs, just
diskettes.

If you have a >MOD file, then it'll work on any .MOD file player whether it be
IBM,  Amiga or SunValleyFunTimeIceCreamMachine!!!!
Newsgroups: comp.sys.amiga.audio
From: ericj@hwcae.Honeywell.COM (Eric Jacobsen)
Subject: Re: Halving sample speed while keeping pitch
Organization: Honeywell, Air Transport Division; Phoenix, AZ
	<ERICJ.92Aug24131911@lagos.cfsat.Honeywell.COM>
	<1992Aug26.145436.5222@jet.uk>
Date: Wed, 26 Aug 1992 19:14:24 GMT

In article <1992Aug26.145436.5222@jet.uk> djs@jet.uk (David J Stevenson) writes:

   >2. Take the upsampled signal and mix it with a sine wave that shifts
   >the pitch back up. (You get a sum and difference frequency, you filter
   >out the difference freq). Actually, this is kinda tough to do 
   >digitally. It is a lot easier to do this in the analog domain when
   >you play it back.
   Eh?  What pitch sine wave? At what level?
   What the software actually needs to do is double the number of samples
   in the signal; this is what oversampling does.  So, between every sample
   in the source signal add a sample at the zero level (may be zero, or 32768
   or whatever, depending on number of bits and whether the signal data is
   signed).  This gives the correct number of samples, but has introduced some
   high-frequency distortion.

Ayup. Adds a lot of unnecessary crap to an otherwise clean signal. A real
upsampler (or oversampler as you call it) interpolates the missing samples
so you have the same nice clean signal you started with, only with more 
samples (but no added bandwidth). Even so, doing this doesn't provide the
time stretch with pitch preservation that the original poster was looking
for.

   However, this distortion is ABOVE the maximum frequency present in the
   original signal (see Nyquist theorem).  It can therefore be removed by a
   simple filter.  How to design digital filters is a complex subject to
   understand, but the algorithms for designing filters are available in the
   public domain.  Search the comp.dsp FAQ for references on filter design.

DSP design is a lot fun, though. It's what I do for a living.

--
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
* Eric Jacobsen        Honeywell Inc.                           *
|     1-602-436-3941   Commercial Flight Systems, Air Transport |
* HVN       436-3941   US Mail: P.O. Box 21111, MS 2Q34C1       *
| FAX 1-602-436-1310   Phoenix AZ 85036-1111                    |
* INet: ericj@hwcae.honeywell.com                               *
| UUCP: uunet!hwcae.honeywell.com!ericj@uunet.uu.net            |
* The opinions expressed are my own and therefore better        *
| thought out than my employer's.                               |
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
Newsgroups: comp.sys.amiga.audio
Subject: Re: Amiga KCS 3.5
From: Michael Whitten <M-WHIT2@UMINN1.BITNET>
Date: Monday, 24 Aug 1992 08:46:59 CST
Organization: University of Minnesota - Computer & Information Services


>Anybody out there used this...  How good is it.  I would specifically
>like to know whether it has any librarian, sysex handling stuff.  Also
>can it handle amiga samples and is the interface pretty  nice for
>prolonged use...?
>
>Steven Collins
>
>PS: I've used Music X quite a lot but have grown to hate the interface,
>and absolutely cannot understand why the screen update is soooo slooow.

One of my favorite debates!  MusicX: pretty and useless and doesn't work.
KCS: ugly and useful and works.  Seriously, I'm a hardcore user of Dr.T's
stuff on my Amiga, and KCS (3.54) is my favorite sequencer of all time...
simply because 1) it has raw and open-ended power, and 2) its user inter-
face is fast.  Before I got XoR, I used KCS for librarian (storage) duty.
It can receive and send sysex pretty well, but it will choke on extremely
large incoming sysex.  My favorite KCS deals are the editing tools: the
Master Editor and the Programmable Variations Generator - serious stuff.
I don't use it a whole lot but the Level II includes Tiger, a graphic
editor - great for drawing controller curves.  KCS multitasks extremely
well in the Amiga environment - especially with XoR, their editor/librarian
software.  My advice: don't get wowed by flashy interfaces; think about the
music.....

  ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  +          Michael D. Whitten M-WHIT2@VM1.SPCS.UMN.EDU                 +
  +                         M-WHIT2@UMINN1                               +
  ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Newsgroups: comp.sys.amiga.audio
From: crystal@glia.biostr.washington.edu (Crystal)
Subject: Re: TALK.LHA *FOUND*
Organization: University of Washington
Date: Fri, 4 Sep 1992 02:03:49 GMT

Hmmmmm....I'm rather disappointed with the program.  I used the example in
the readme file and got very choppy speech on my 2000 (yes, I was using the
harddrive, so no clues as to why so choppy).

I really like the talk module that comes with "The Rhyming Notebook". About
a 10$ commercial product, but the voice is much better and trainable.

Crystal
  :>

Newsgroups: comp.sys.amiga.audio
From: jay@cmn19.Stanford.EDU (Jay Kadis)
Subject: Re: Amiga KCS 3.5
Organization: DSO, Stanford University
Date: Thu, 3 Sep 92 17:17:45 GMT

In article <92245.082431M-WHIT2@UMINN1.BITNET>  writes:
> On Aug 31 1992, barrett@astro.cs.umass.edu (Daniel Barrett) said:
> >>One of my favorite debates!  MusicX: pretty and useless and doesn't  
work.
> >        Doesn't work?  Could you be a little more specific... like,
> >maybe actually present some evidence?
> >
> >        I've used Music-X for years and it works fine for me.  It  
certainly
> >has some flaws -- in particular, the Bar Editor screen refreshes too  
slowly
> >during playback -- but it has tons of functionality.
> >
> >                                                        Dan


I have tried using Music-X on my A2000 (sys 1.3) with the ECE MIDI  
interface and have had disappointing results.  It drops notes and hangs in  
record.  I thought maybe I had hardware problems, but when I got Bars and  
Pipes Pro, everything worked flawlessly, including sysex dumps which would  
never work with Music-X.  I have upgraded Music-X to V. 1.1 (?), and that  
won't run correctly at all: the clocking is erratic.  MicroIllusions have  
been no help. I agree that Music-X has nice features and all, but if it  
won't run reliably, it's of no use.   

Jay Kadis
jay@ccrma.stanford.edu
Newsgroups: comp.sys.amiga.audio
From: zap@lysator.liu.se (H}kan Andersson)
Subject: Time for MORE music from Zap! U4ia, watch out :-)
Keywords: MED mod Music
Organization: Lysator Academic Computer Society, Linkoping University, Sweden
Date: Wed, 2 Sep 1992 05:41:27 GMT

Yo dudes and dudettes!

I have uploaded to wuarchive.wustl.edu, in pub/amiga (for now, will probably 
move l8ter) the following songs:

* YellyBeanSong.Zap.MED.mod.lzh
* TechnoViolin.Zap.MED.mod.lzh

Both songs require MED/Medplayer from version 3.1 at least, I think. OctaMED
and OctaMED PRO handles them fine as well (They are Actually created in
OctaMED pro but saved as MMD0's e.g. old MED format)

Neither is a MASTERPIECE, but what mod's are these days? I hope you like the
beat of YellyBeanSong. I change the tempo between each note(!). To in any
other way try to DESCRIBE YellyBeanSong is in vain. It is nothing I have ever
heard before. Is it hip hop? Is it Jazz? Is it Techno? Nah, neither. But
somhow a mix between.....nah....listen for yourself!

TechnoViolin is a harmless toying with grandpa's violin. Hehe. As harmless as
a six inch steel blade with a razor sharp edge, blood dripping from it's tip,
as it emerges from the flesh of the....eh....sorry....got a bit carried away!

If you like U4ia's music, then check out TechnoViolin. If you dont like
beats that just pump til your head falls off, check out YellyBeanSong. If
you like music in general, check out BOTH!

Love to hear from ya!

Reviews are wholeheartedly welcome (both good 'n bad!)

/Z

-- 
!! The ANSWER   : 42     ("Hitchhikers Guide to the Galaxy" - Douglas Adams) 
!! The QUESTION : 0x2b | ~0x2b   ("Hamlet" - William Shakespear) | Dont Worry -
!! The EMAIL    : zap@lysator.liu.se  The PHONE: +46 16 96460    | Mail Zappie!

--
!! The ANSWER   : 42     ("Hitchhikers Guide to the Galaxy" - Douglas Adams) 
!! The QUESTION : 0x2b | ~0x2b   ("Hamlet" - William Shakespear) | Dont Worry -
!! The EMAIL    : zap@lysator.liu.se  The PHONE: +46 16 96460    | Mail Zappie!

Newsgroups: comp.sys.amiga.audio
From: sevigny@vlsi.polymtl.ca (Benoit Sevigny)
Subject: Re: FFT questions
Organization: Ecole Polytechnique de Montreal
Date: Sun, 30 Aug 1992 20:25:25 GMT

In article <doug.03ym@dsij.uucp> doug@dsij.uucp (Doug Johnson) writes:
>
>  I am trying to test a FFT algorithm from Hal Chamberlin's 'Musical
>Applications of Microprocessors'. I copied the BASIC subroutine some time
>ago, and I can't get my hands on the book anymore.
>  So far I've been using it as a method of synthesis. From the discussion
>here, it sounds like it has more potential. What other types of sound
>processing is it used for besides frequency shifting?
>
>--
>
>Doug Johnson		  *	Q: What do you call a tornado with long hair
>Windsor, ON		  *	and boils?
>Canada			  *	A: A cysted twister.

It has traditionaly been used has a convolution (filtering) shortcut but I also
use it to correlate waves (pattern recognition).

I even once read an article on how to use it to find greatest common
divisors and as a factoring method!

BTW, there are a lots of available transform that each have their own
advantages.  The newest emerging tool seams to be the 'wavelets'.  See
comp.dsp for details.




















--
===============================================================================
     /// Benoit Sevigny, software | Skipping every x86 lines in your sources
 \\\///  engineering student      | might remove both your most irreductible
  \\V/   sevigny@info.polymtl.ca  | bugs and bottlenecks :-)
From: pochanay@cae.wisc.edu (Adisak Pochanayon)
Newsgroups: comp.sys.amiga.audio
Subject: MIDI Software...
Date: 26 Aug 92 22:21:27 GMT
Organization: U of Wisconsin-Madison College of Engineering


    I was wondering if someone had a list of the available MIDI software for
the Amiga and what the main features are.  I want something that can send
MIDI patch changes and program my MIDI equipment on the fly while still being
able to do nice sequencing and preferably, traditional notation.  Something
like Finale on the Mac.  Also, none of this keydisk protection like on Dr T's
because it's annoying to use on my HD machine finding the disk everytime I
use it.  I have an old Dr T's and Music X but neither comes close to what I
want.
From: stockamp@ztivax.UUCP (Klaus Stockamp)
Newsgroups: comp.sys.amiga.audio
Subject: Re: SMUS2MOD
Date: 3 Sep 92 11:42:45 GMT
Organization: Siemens AG, Munich, W-Germany

aj639@cleveland.Freenet.Edu writes:

>Which FTP site has this program??  IP address/full name would be appreciated.

I saw it on 131.246.9.95
/pub/amiga/ianet/music/smus2mod.lha


 
 .--------------------------------------------------.
 |                                  |  Do It With   |      //
 | stockamp@ztivax.zfe.siemens.de   |     An        |     //  Was sonst ?
 |                                  | Administrator | \\ // 
 `--------------------------------------------------'  \X/

   Klaus Stockamp
   Agnes-Bernauer-Str. 7
   8000 Muenchen 21
   W-Germany
   Tel: 089 / 636 - 4 08 20
Newsgroups: comp.sys.amiga.audio