| In answer to a request made by Hans Pelleboer, that might be of interest to other Csounders. He wrote:
This is possible, yet fiendishly difficult; I remember an ASA presentation
in the early eighties of a computer processed Caruso recording, in which,
through inverse filtering, the entire orchestra had been eliminated. This
was a herculean task: note for note the filters had to be set to eliminate
the momentary harmonic complexes --and this was still relatively simple
homophonic music with a prominent soloist; imagine lifting a single boy
treble out of Tallis' Spem in alium!
(I don't remember the guy's name who did his dissertation on this; I
thought it had been done at Washington State --If anyone knows more about
this work, then please let me know; especially if you happen to have a
recording of this reconstruction.)
Hans Pelleboer
In 1980 while working at the Center for Computer Music at Brooklyn College, CUNY, Charles Dodge composed "Any resemblance is purely coincidental" for tape and piano.
The tape part was based on Enrico Caruso's voice, taken from a 1907 recording of the aria "Vesti la giubba" from Leoncavallo's i Pagliaci. The voice had been isolated from the orchestral accompaniment and then resynthesized using different LPC techniques. The piano accompaniment to the tape is played live.
The computer extraction of the voice was a tour de force indeed, specially back in 1980. It was made by Prof. Thomas Stockham and his student Neil Joseph Miller at the University of Utah.
I happen to have two different recordings of this piece (I admire Dodge's work very much, and "Any resemblance..." in particular is one of my favourite compositions in the whole computer music literature):
Computer Music Currents vol. 11 - Wergo 2031-2
with Anthony de Mare, piano
(along with compositions by Paul Lansky, Douglas Foulton, Stanislaw Krupowicz, and Alejandro Viñao)
Any Resemblance is Purely Coincidental - New Albion 043 CD
with Alan Feinberg, piano
(along with other compositions by Dodge: Speech Songs, The Waves, Viola Elegy)
Both CDs should be easily available in the USA, I don't know in Holland. You can order from the Electronic Music Foundation at:
http://www.emf.org/cde_frontdoor.html
I don't know if you were refering to this work, but the resemblance is too much of a coincidence.
Luis Jure
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Date: Tue, 16 Dec 1997 08:54:44 -0800 (PST)
From: Mike Berry
To: Richard Dobson
Cc: csound@maths.ex.ac.uk, "A. Archias"
Subject: Re: Re; Balance
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I agree that there is something fishy in balance. I have been
able to get a "pumping" sound out of it in some conditions. Though I know
it doesn't apply to all platforms yet, I have gotten by the problem by
simply generating in floats and post-normalizing.
You can also do it by making an accumulator yourself, though you
need to use the zak opcodes to save the values from pass to pass.
Mike Berry
mikeb@mills.edu
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Date: Tue, 16 Dec 1997 09:30:44 -0800
From: Erik Spjut
Subject: Re: Re; Balance
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The biggest problem I find with balance is that it updates its multiplier
at k-rate. For rapidly varying signals you get large discontinuities (and
hence aliasing and distortion) at the k-frame boundaries. Running balance
with kr=sr fixes almost all of the problems. However, since balance works
essentially like a compressor-expander you can get it to make breathing
sounds if you try hard enough.
-------------------------------------------------------------------------------
Erik Spjut (rhymes with cute) - Acting Director,The Center for Design Education
and/or Associate Professor of Engineering
Harvey Mudd College, Claremont, CA 91711 USA
Erik_Spjut@hmc.edu Ph & Voice mail (909) 607-3890 Fax (909) 621-8967
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From: Josep M* Comajuncosas
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>
The best image - to -sound - to image converter I´ve seen is
in http://ourworld.compuserve.com/homepages/Peter_Meijer/javoice.htm
it is a java applet that lets to import sound files convert them to
sonograms to modify it graphically, or just the opposite thing.
You can do wonderful things, like render some clouds and light effects
with Photoshop and then hear the result, or make the sonogram of a
soundfile, modify it graphically and, back to sound, hear it... This
works great with vocal sounds... the innacuracies in the resynthesis are
delicious!
The maximum res. of an image is about 450*450 pixels, so you cannot make
a masterwork of it, and you must be careful with the selected range of
frequencies to render the sound file, but anyway it is free!
Hope this will help you...
Josep M Comajuncosas
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To: Josep M* Comajuncosas
Cc: Hans Pelleboer , Hans Mikelson ,
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Subject: Re: Opcode for Picture->Audio?
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Josep M* Comajuncosas wrote:
>
> The best image - to -sound - to image converter I´ve seen is
> in http://ourworld.compuserve.com/homepages/Peter_Meijer/javoice.htm
By the descriptions on the Web site, it sounds fantastic...but the
applets wouldn't run! (I tried Netscape 4.04 and 3.01 on Win95, and
neither worked...there's a NoClassDefFoundError) Is there a place to
download the software in a non-Java version, or even a Java standalone
that works?
--
======================================================================
James Garfield james@badrat.com
BadRat Multimedia Productions http://www.badrat.com
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From: Michael Pelz-Sherman
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Subject: Re: Opcode for Picture->Audio?
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Works for me under IE 4.0 on NT using a SoundBlaster AWE card. This is WAY cool!
---
Michael Pelz-Sherman
Software Engineer, Integrity Solutions
mps@is.com
http://www.isnt.com/mps
Begin forwarded message:
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James Garfield wrote:
>
> Josep M* Comajuncosas wrote:
> >
> > The best image - to -sound - to image converter I've seen is
> > in
> By the descriptions on the Web site, it sounds fantastic...but the
> applets wouldn't run! (I tried Netscape 4.04 and 3.01 on Win95, and
> neither worked...there's a NoClassDefFoundError) Is there a place to
> download the software in a non-Java version, or even a Java standalone
> that works?
>
> --
> ===================================
I've just linked to it, using Netsacpe V.3.0 on my Win95, and it runs
fine (took a while to download everything, though). The page itself
includes links to the stand-alone Java application.
Richard Dobson
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From: David Schuyeteneer
To: csound mailing list
Subject: rates
Date: Wed, 17 Dec 1997 02:01:45 +0100
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Can someone please explain me very clear and exactly what those
weird A -, K - and I - RATES are ??? I really haven't encountered such a
thing
as "rates" ever before in sound synthesing !
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Date: Tue, 09 Dec 1997 17:26:00
To: csound@maths.ex.ac.uk
From: Hans Mikelson
Subject: Pixel --> Audio
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Hello,
Thanks to everyone for the info! Here are a few links:
http://www.music.princeton.edu/PSK/hyper.html
Virtual Waves spectral sketchpad feature:
http://www.synoptic.net/
http://www.ircam.fr/produits-real/logiciels/metasynth-e.html
http://windworld.com/emi/software.htm
Apparently WCShell does this too but I could not find it?
I got the Java one to work which was a lot of fun! Metasynth looks pretty
cool too! Maybe it would be good to have color represent panning
(Red-->Green=left-->right) (I think Metasynth does this),
intensity=volume, Y=Frequency and X=Time as usual. I also see it would be
necessary to go both from audio to picture and back again. To make the
most of a system like this special drawing tools and image filters could be
developed. Otherwise there are a lot of drawing programs with advanced
editing and filtering tools but they are not geared towards audio at all.
Bye,
Hans
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From: rasmus ekman
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David Schuyeteneer wrote:
>
> Can someone please explain me very clear and exactly what those
> weird A -, K - and I - RATES are ???
A-rate in Csound means audio rate, ie generated soundfile sample rate.
Sample rate in a digital sound file decides the sound quality.
Common values are: 44100 Hz (CD rate), 22050 Hz (usually ok when testing
an instrument), or 8000 Hz (web .au files - only good for speech)
It might be added that the sample rate also determines the highest
representable pitch in a digital sound, namely half the sample rate.
Sample rate (sr) of 44100 can thus theoretically represent up to
22050 Hz pitches - just above the highest pitch anyone can hear
under the best conditions at any time in their life.
You'll find a section on this topic eg in most sampler manuals,
in help files for sound programs etc.
K-rate means "Control" rate. The ear cannot detect most musical changes
(like pitch change) at a very high rate. Csound saves computing time by
updating many variables at a slower rate. For most purposes 1/10th or
even 1/100th of audio rate will do fine. At lower rates the stepping in
the variable changes will be too annoying.
I-rate is for init time. This is not properly a rate, it's for setting
a variable to an initial value when an instrument begins playing.
Regards,
re
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From: rasmus ekman
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Hans Mikelson wrote:
>
> http://www.ircam.fr/produits-real/logiciels/metasynth-e.html
>
> cool too! Maybe it would be good to have color represent panning
> (Red-->Green=left-->right) (I think Metasynth does this),
Hm, forgot to CC this to the list.
(In response to Hans Pelleboer)
Metasynth runs on PowerMac only. Until just now the demo was only
available to the Ircam user group subscribers, or as a blind buy (1800
franc).
It is now distributed by the programmer, and available as demo from
http://www.uisoftware.com/PAGES_COM/msdemo.html
Info available from links on
http://www.uisoftware.com/PAGES_ALT/ms_features.html
Metasynth maps red->right amp, green->left amp. What makes it
specially nice are the specialised drawing tools and filters included,
which make it easy to paint your sounds. My favourite is rotation.
This will as you understand rotate pitch <-> time. This tool is alas
not available in the same form in any graphic program I've seen
(it will keep the size of the image, and wrap it around over and over).
There are also special brushes, echoes (repeat pixels at intervals) etc.
It can use wavetables (editable in the prog), imported soundfiles,
or FFT'ed sounds.
There were some silly limitations in available pitch range in the
old demo. The new demo is upgraded, I hope he's changed that.
(Haven't had time to look at it yet, I've only run the old one in the
electro-acoustic studio here in Stockholm.)
Regards,
re
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Date: Wed, 17 Dec 1997 01:39:11 -0500 (EST)
From: Laszlo Vecsey
To: csound@maths.ex.ac.uk
Subject: Win95 (3.47 beta) midi and devaudio
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I dont have a soundblaster compatible soundcard (Its a Turtle Beach
Multisound Pinnacle) and I'm guessing thats why I had trouble with
-odevaudio and -Msbmidi.
Is it possible to instruct csound or winsound to use the Win95 drivers for
wavout and midi in?
- lv
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To: csound@maths.ex.ac.uk
From: Hans Timmermans
Subject: 32 bit AIFF
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Hi CSound,
some time ago something was new on 32-bit AIFF.
Where can I find the info (code, documentation etc.)?
Thanks for the tip!
Hans Timmermans e-mail: hans.timmermans@kmt.hku.nl
Utrecht School of the Arts phone: (+31) 35 6836464
dep: Music Technology fax: (+31) 35 6836480
senior lecturer computer music
PO-BOX 2471
1200 CL HILVERSUM
the NETHERLANDS
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From: jpff@maths.bath.ac.uk
Subject: Benchmarks
To: csound@maths.ex.ac.uk
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Message written at 16 Dec 1997 21:47:39 +0000
i just happened to run Csoudn on my PentiumII/266MHz and the times
reported are
Test Bach-d Bach-m Riss-g Riss-m Guit-d Guit-m Jame-g pvanal lpanal
Length 115.73s 115.73s 63.75s 63.75s 87.75s 87.75s 6.75s 6.75s 5.00s
------------------------------------------------------------------------------
PenII 1.98 1.32 3.86 2.69 5.17 4.5 0.33 8.24 0.55
R5000SC 4.7 3.7 2.7 2.3 6.1 4.6 0.4 3.9 2.5
O2 r5 4.13 6.43 5.00 3.13 18.78 19.31 1.63 - -
Indy r5 4.70 4.55 2.96 2.92 21.24 21.23 0.50 - -
ALPHA 5.1 5.0 4.9 4.1 30.2 30.1 2.9 - -
Indy r46 6.81 6.69 4.53 4.42 36.46 36.54 0.71 7.39 4.77
R4400 7.5 6.6 4.0 3.7 11.1 10.7 0.9 9.0 3.7
PPro180 7.86 6.53 3.46 2.75 5.88 4.67 0.55 - -
......
Just thought someone might be interested. File updated on server.
=John
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