| These may be Linux-version specific, but I'm scratching my head over
them:
1. Why do any orcs with expseg bomb out on me with a seg fault ? If I
change the calls to linseg the compile works fine.
2. Why does 3.45 complain about "invalid table sizes" for "Trapped In
Convert" but 3.44 handles them fine ?
3. Why does this command-line
csound -o/dev/dspW -W -r8007 -k8007 -dm6 my.orc my.sco
produce an output identical in sound to the same orc/sco compiled
with sr=kr=44.1 kHz ? Shouldn't the over-ride be producing
a slowed-down output ?
When run so
csound -o/dev/dspW -W -r44100 -k44100 -dm6 my.orc my.sco
the output is in fact slowed down to what sounds about an 8k sr. If
I multiply
kfreq by 5.5125 then the output comes back up to speed, or I can
use the first command-line and leave kfreq as indicated (not
multiplied).
Btw, the orc/sco files are very simple, I don't think they're
causing a problem.
== Dave Phillips
http://www.bright.net/~dlphilp/index.html
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Date: Wed, 19 Feb 1997 08:22:14 -0500
From: Dave Phillips
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I'm writing an article on Csound running under Linux and I would like to
have some sense as to how many of us are using that combination. If
you're using Csound with Linux you could help me greatly by responding
to the following questions:
1. What version of Linux are you using ? (a short description of your
system would be helpful)
2. What version of Csound are you using ?
3. Are you using Csound for realtime output ? (please describe)
4. Do you use the MIDI input features of Csound ? (please describe)
5. Why are you using Linux ?
Please email replies directly to me, and thank you for any and all
help.
== Dave Phillips
http://www.bright.net/~dlphilp/index.html
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Message-Id:
From: Greg Sullivan
To: 'Mike Berry'
Cc: "'csound@noether.ex.ac.uk'"
Subject: RE: midiolap and midiage
Date: Thu, 20 Feb 1997 00:23:50 +1100
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Midiolap takes a single i-time number as a parameter.
This number defines the maximum number of instances
of the instrument that can be active simultaneously,
for any given midi note number, when the sustain pedal
is depressed (active). For example, for a piano instrument,
if you include "midiolap 3" in the orc, and you continually
play a single note with the sustain pedal down, there
will be three "voices" ringing at the same time, after
three key presses. (after two, there will of course only
be two, and so on). After 4 key presses, the earliest
voice will begin it's release, and thus there will still
be only three active voices.
The intention of this operator is to simulate the sound
of piano instruments, when repeated notes are struck with
the sustain pedal down - the sound changes slightly with
each note. The overlapping voices to some extent
mimick this effect, due to the differing phases of the
voices with each key press. NB: I believe that most,
if not all, digital pianos and synthesizers implement
this voice overlapping. I assume that it's really just
one parameter of voice stealing - it can probably be
disabled on instruments that have more than one
voice stealing algorithm.
Midiage returns a k-rate value that indicates the current "age" of the
active voice - i.e, how many "later" notes of the same note
number have been activated. This would allow, for example,
the volume of the voice to be reduced according
to how many other active voices there are.
I can't remember whether it starts at 0 or 1.
I thought I submitted some documention on these
operators a long time ago, but I am not sure.
John? :) Also, I would have thought that these would
have made it into at least the PC version.
I am sorry to be so vague - it was a long time ago
that I wrote these, and I am guilty of not keeping
proper notes.
Greg.
>----------
>From: Mike Berry[SMTP:mikeb@mills.edu]
>Sent: Wednesday, February 19, 1997 8:52 AM
>To: csound list
>Subject: midiolap and midiage
>
> Does anyone know how the midiolap and midiage opcodes work? Are
>they even part of any csound except csound.ppc? Does anyone have any
>doc?
>I'm looking at the code and I can't figure them out.
>
>Mike Berry
>mikeb@mills.edu
>http://www.mills.edu/PEOPLE/gr.pages/mikeb.public.html/mikeb.homepage.ht
>ml
>
>
>
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To: csound@maths.ex.ac.uk
Subject: Atari Csound
Date: Wed, 19 Feb 97 15:07:03 GMT
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Do you still have an old slow machine? Try the new bigger Csound 3.44
on the Atari. Available now on
ftp.maths.bath.ac.uk:pub/dream/ATARI/csound.ttp
No it is not optimised for a Falcon; no it does not use a ftp
co-processor. Yes, it is slow. Yes it is misnumbered as 3.45.
==John
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Date: Wed, 19 Feb 1997 16:24:47 +0100
From: Marc Resibois
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jpff@maths.bath.ac.uk wrote:
>
> No it is not optimised for a Falcon; no it does not use a ftp
> co-processor. Yes, it is slow. Yes it is misnumbered as 3.45.
>
In our internet era, a computer with a FTP co-processor rules ;-)
Atari understood everything.
Marc.
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From: Jon Christopher Nelson
Date: Wed, 19 Feb 97 09:45:55 -0600
To: madole@mills.edu
Subject: Re: large score files
Cc: csound@maths.ex.ac.uk
References: <199702182140.NAA21007@ella.mills.edu>
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Dave:
You wrote:
>You may or will get a similar looking memory error if the density of
>events (number of instruments allocated) is too high. This
>sometimes happens with matt's score generator, e.g. I think the
>only way to adjust for this is for the programmer to make a fixed
>pool larger. If you make the instruments smaller and the program
>behaves differently, that may be the case. The memory allocation
>scheme for instantiations of instruments, if I remember right, is
>not quite so forgiving or smart as that for score files. Something
>to put on the list, I guess.
Actually, This is not likely to be the problem. I arbitrarily
split the 25 MB file into two 12.5 MB files which perfed like a
charm. The instrument density throughout the score file is also
relatively consistent. In addition, the soundfile would have been
generated up to the point at which the number of instrument copies
exceeds the limit (at least, this has been the case when I have
exceeded the limit in the past).
Any other ideas regarding this problem? (Not really a major
problem, just was a slight inconvenience to split up the score into
two files before perfing)
regards,
Jon Nelson
Jon Christopher Nelson, Director
CEMI (Center for Experimental Music and Intermedia)
University of North Texas College of Music
P.O. Box 13887
Denton, TX 76203
USA
ph. (817) 565-4926
fax (817) 565-2002
jnelson@sndart.cemi.unt.edu
http://www.music.unt.edu/comp/jnelson.htm
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Date: Wed, 19 Feb 1997 18:34:31 +0100
From: Bernd Eggink
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I am presently hacking my way through the CScore sources, trying
to make it more readable and usable. Presently CScore neither handles
the '+' in p2 nor ramping; it (accidentally) handles carry, but for
numbers only. I corrected the '+' and the carry problem, but I'm not
sure whether it's worth going on. I consider rewriting the whole thing
as a C++ class library instead.
My question is: Does anybody use CScore at all? Would an improved
version be of general interest, or does everybody use his own score
generator anyway?
Another question: According to the sources, there is an opcode 'w' which
turns a section into a "warped" one, with extra parameters for time and
duration. I couldn't find anything about this in the manual. Can anybody
enlighten me? Yes, I _know_ the new manual is due in a couple of days,
but I'm curious... ;-)
Bernd
--
Bernd Eggink
Regionales Rechenzentrum der Universitaet Hamburg
eggink@rrz.uni-hamburg.de
http://www.rrz.uni-hamburg.de/eggink/BEggink.html
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From: Stephen Barrass
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To: jfbeahan@cats.ucsc.edu
Subject: Re: piping problem
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hi john
> It starts out fine for the first few events, but then it suddenly stops
> producing music. Csound sits there as if waiting for more information,
> but produces no sound.
when i use version 3.39 i get the same problem you report (on a sun sparc10)
yet this stuff works ok with an older version of csound from 1994
there is no version number on it so i dunno what it is
here is the code that works very nicely in that older version
dummy.sco
f1 0 4096 10 1
f 0 3600
test.sco
i1 0 1 0.4
i1 1 1 0.5
i1 3 1 0.6
test.orc
sr = 8000
kr = 800
ksmps = 10
instr 1
k1 oscil 50,p4*10,1
aout pluck 10000,220+k1,220,0,1
out aout
endin
cat test.sco | csound -s -o stdout -Lstdin test.orc dummy.sco | play
stephen
--------------------------------------------------------------------------------
stephen.barrass@cmis.csiro.au @ * ~
ftp://ftp.cbr.dit.csiro.au/staff/stephen/stephen.html whiz pop splash
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From: John Francis Beahan
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To: Stephen Barrass
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Subject: Re: piping problem
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On Thu, 20 Feb 1997, Stephen Barrass wrote:
> hi john
>
> > It starts out fine for the first few events, but then it suddenly stops
> > producing music. Csound sits there as if waiting for more information,
> > but produces no sound.
>
> when i use version 3.39 i get the same problem you report (on a sun sparc10)
>
> yet this stuff works ok with an older version of csound from 1994
> there is no version number on it so i dunno what it is
> here is the code that works very nicely in that older version
Thank you all for your help. I'll check into different versions. The
problem has just mysteriously disappeared. The disturbing part is I
don't know why. I can only hope it doesn't occur again.
Question: Could there be a bug in that version, and if so, how can we fix it?
Any answers are greatly apreciated.
John Beahan
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Date: Wed, 19 Feb 1997 18:37:57 -0800
From: Toby
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Subject: Re: CScore
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> My question is: Does anybody use CScore at all? Would an improved
> version be of general interest, or does everybody use his own score
> generator anyway?
I use cscore all the time. I find it to
be extremely useful. I am sorry to see
that it doesn't work any more (At least
for me with Linux). I have reverted to
a very old version of cscore in order to
use my programs. This is a version which
predates the expansion of the cscore typedef's.
Cscore was broken when the 'dribble_printf'
defs went into an include file.
I would love to see a new version, but I
don't yet speak C++. I usually make very
small, unique programs with cscore that
live their entire lives putting out a score
for a particular part of a particular piece.
Isn't C++ more usefull for complex and hard
to understand module relationships and the like?
Toby,
-There otta be a law-
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Dave Phillips wrote:
> 2. Why does 3.45 complain about "invalid table sizes"
> for "Trapped In Convert" but 3.44 handles them fine ?
Me too. What happened to 3.45 under Linux? It's like
that Pentium thing. Ask for table size of 16384, and
you get something like 16383.999 in score.srt, and Csound
bombs.
Toby
-There otta be a law-
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Date: Wed, 19 Feb 1997 22:01:55 -0500 (EST)
From: Lawrence Troxler
To: Toby
Cc: eggink@rrz.uni-hamburg.de, CSound mailing list
Subject: Re: CScore
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> I use cscore all the time.
Then maybe you know what the -C option for Csound does:
(main.c:)
case 'C':
O.usingcscore = 1; /* use cscore processing */
I know that there is a cscore library you can link to a stand-alone
program, in order to cook up Csound score files, but I don't know how
cscore would be used in connection with running the main Csound
executable.
Larry
-- Larry Troxler -- lt@westnet.com -- Patterson, NY USA --
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Date: Wed, 19 Feb 1997 22:07:28 -0500
From: Gregory Boduch
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Subject: Sone scale
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Hello,
In "Elements of Computer Music," on page 21, example (1-2), there is a
formula listed for subjective loudness of sine tones, L = C * (I^1/3).
I have implemented it in this form,
IL = 10 * ( ln ( ( ( sones / Hz )^3 ) / 10^-12 ) / ln 10 )
however I'm not getting any satisfactory results. I was expecting to be
able to control the subjective loudness of a sine oscil by passing two
arguments to the formula, Hz and sones.
Are speakers the problem? Do they need to have an absolutely flat
frequency response for this to work? I have tried it on head-phones,
low-end Sony speakers, and on mid-range JBLs, with no success. I'd
appreciate any suggestions.
Thanks,
Gregory Boduch
gb141@columbia.edu
;-------sonetest.orc--------------------------------
sr = 44100
kr = 441
ksmps = 100
nchnls = 2
instr 1
ifq = cpspch(p4+4)
isones = p5
asones expseg .1, .1, isones, p3-.11, isones,
.01, .1
ares1 apow asones/ifq, 3, 1
ires2 ipow 10, -12
adb = 10 * ((log((ares1) / ires2)) /
log(10))
ampenv = ampdb(adb)
amp = ampenv
asig oscili amp, ifq, 1
outs asig, asig
endin
;------------sonetest.sco------------------------------------
f1 0 1024 10 1
; sones --- !According to the equation these should
sound equally loud!
i1 0 1 1.00 2.816
i1 1.5 1 2.00
i1 3 1 3.00
i1 4.5 1 4.00
i1 6 1 5.00
i1 7.5 1 6.00
i1 9 1 7.00
i1 10 1 8.00
e
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Date: Wed, 19 Feb 1997 20:41:39 -0800 (PST)
From: Richard Karpen
To: Toby
Cc: Dave Phillips , csound@maths.ex.ac.uk
Subject: Re: some Csound problems (?)
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If you are having problems with table sizes (this seems to be
happening ONLY with people using Linux) then take replace the
file swrite.c in your 3.45 directory and replace it with the
swrite.c from 3.44. We changed the function "fltout" in swrite.c
in order to allow for large table sizes (really just allows large
numbers to be printed to the score.srt file!). Apparently there
is a precision problem under Linux so for now, Linux users who
compile their own code can do this replacement until a more
permanent solution is found.
A tedious alternate solution would be to edit the score.srt file and
change the 16383.999 to 16384.
RK
On Wed, 19 Feb 1997, Toby wrote:
> Dave Phillips wrote:
> > 2. Why does 3.45 complain about "invalid table sizes"
> > for "Trapped In Convert" but 3.44 handles them fine ?
>
> Me too. What happened to 3.45 under Linux? It's like
> that Pentium thing. Ask for table size of 16384, and
> you get something like 16383.999 in score.srt, and Csound
> bombs..
>
> Toby
>
> -There otta be a law-
>
>
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Subject: Re: large score files
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Message written at 19 Feb 1997 17:47:26 +0000
In-reply-to: <9702191545.AA01587@sndart.cemi.unt.edu> (message from Jon
Christopher Nelson on Wed, 19 Feb 97 09:45:55 -0600)
Dave wrote
> e.g. I think the
>only way to adjust for this is for the programmer to make a fixed
>pool larger.
Are you sure? What fixed pool is there? I thought they had all been
nailed except number of instruments and number of p variables (both on
my list by the way)
==John
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In-Reply-To: <330BBA88.4EA8950A@rcsreg.com> (message from Toby on Wed, 19 Feb 1997 18:44:24 -0800)
Subject: Re: some Csound problems (?)
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What has happened is that LINUX is bust. It cannot print an integer
corectly. Works on Windows95 and Unix/SGI at least.
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From: PERRY JG
To: csound@maths.ex.ac.uk
Date: Thu, 20 Feb 1997 12:07:23 BST
Subject: Re: C++ ?
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[John Fitch wrote:]
> I do love this dry sense of humour. Let me give you some platforms
> which do not run C++.
> Archimedes; Atari; Orion; my SGI Indigo (the main machine used for
> Csound maintenence in Bath); my 386.
Actually, there are three C++ compilers for the Archimedes.
GNU (freeware)
Easy C++ (commercial BEEBUG)
Acorn C/C++ (commercial Acorn)
But I agree that I don't think there would be any advantage
rewriting
CSound in C++.
BTW, the A440 has a socketed ARM2 processor. But it can be upgraded
to ARM3, as well as the video chip and OS.
Jason Perry
Music + Electronic Engineering
Leeds University Music Department
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Date: Thu, 20 Feb 97 13:53:26 +0100
From: Mikael Hillborg
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To: csound@maths.ex.ac.uk
Subject: Re: C++ ?
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[John Fitch wrote:]
> I do love this dry sense of humour. Let me give you some platforms
> which do not run C++.
> Archimedes; Atari; Orion; my SGI Indigo (the main machine used for
======
??????
Check out for example:
http://www.funet.fi/pub/atari/programming/gcc233bb.zoo
( Gnu C++ 2.33 binaries )
/Mikael Hillborg
|