| I don't understand the question. The orc and sco that you posted
work, and there is a 'looping delay' in it that also works. What
is it that you are trying to add to it?
Perhaps you can't tell that the delay is working, because the notes
are all much longer then the delay period. If this is the case, then
try the same score with all of the notes having duration of .5 or
so. Then you will be able to hear the delay.
> what I am trying to do know is to get a looping delay functioning heres
> my files
> ;;;;;;;;how do i go about this
> Any help is always appreciated
> Pat
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Date: Sun, 09 May 1999 15:16:57 -0400
From: Jean Piche
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Subject: [ANNOUNCE] Concerts a/in Montreal
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------------------------------------------------------
CONCERTS QU'ON SERT
ELECTROACOUSTICS/VIDEO/DANCE/PERFORMANCE
THURSDAY AND FRIDAY, 13 & 14 MAY, 1999, 20h00
------------------------------------------------------
*****APOLOGIES FOR MULTIPLE POSTS*****
Salle Claude-Champagne
200 Vincent D'Indy
Faculte de musique
Universite de Montreal
Open Admission
________________________________________________________________
Works for fixed media by:
Ivan Zawada, Jocelyn Tremblay, Maxime Potvin
Stephen de Oliveira, Melik Alex Farhat, Yves Laporte,
Mathieu Lafontaine, Jean-Francois Laporte, Martin Marier
and Mathieu Lavoie
________________________________________________________________
Video-music works by:
Nicolas Borycki and Julien Roy
________________________________________________________________
Dance + Electroacoustics work by:
Patrick Frize on a choregraphy of
Elizabeth Lowe Ahearn and dancers
Jennifer Egan, Melissa Gould, Melissa Lewis
Julia Rosenfield, Amanda Schiller, Michelle Stanek
________________________________________________________________
Live performances by:
Kojiro Umezaki, shakuhachi
Marie-Chantale Leclair, saxophone
Julien Roy, percussion
Tim, saxophone
Zack Settel, ISPW + piano
Alexandre Burton, computers
________________________________________________________________
And the long awaited world premiere of live
video performance band:
Luce Tucrue
_______________________________________________________________________
------------------------------------------------------
CONCERTS QU'ON SERT
ELECTROACOUSTIQUE/VIDEO/DANCE/PERFORMANCE
JEUDI ET VENDREDI, LES 13 et 14 MAI, 1999, 20h00
------------------------------------------------------
Salle Claude-Champagne
200 Vincent D'Indy
Faculte de musique
Universite de Montreal
________________________________________________________________
Des oeuvres pour support fixe de :
Ivan Zawada, Jocelyn Tremblay, Maxime Potvin
Stephen de Oliveira, Melik Alex Farhat, Yves Laporte,
Mathieu Lafontaine, Jean-Franc Laporte, Martin Marier
et Mathieu Lavoie
________________________________________________________________
Des oeuvre video-musique de:
Nicolas Borycki et Julien Roy
________________________________________________________________
Une oeuvre pour dance de:
Patrick Frize sur une choregraphie de
Elizabeth Lowe Ahearn et les danseuses:
Jennifer Egan, Melissa Gould, Melissa Lewis
Julia Rosenfield, Amanda Schiller, Michelle Stanek
________________________________________________________________
Des performances de:
Kojiro Umezaki, shakuhachi
Marie-Chantale Leclair, saxophone
Julien Roy, percussion
Tim, saxophone
Zack Settel, ISPW + piano
Alexandre Burton, ordinateurs
________________________________________________________________
Et en premiere mondiale, les elucubrations irreverencieuses de:
Luce Tucrue
--
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From: luis jure
To: CSound list
Subject: Re: oscil3 glitch problem (ampdb)
Date: Sun, 9 May 1999 18:49:00 -0230
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>The output from this contains a single sample -32768 spike about a third of
>the way in for no apparent reason.
steve, your orchestra produces a perfectly clean sine sweep for me too
(winsound 3.53; gabriel maldonado's directcsound 2.70, based on csound 3.52
i think). so check your version of csound.
anyway, i don't think it's the best to put:
ilevl = ampdb(96 + p4)
according to the manual, ampdb returns a raw value of 32000 for 90dB, thus
if you take 0dB as your maximum output, a value of 90 would give almost 0dB
for 16 bits (-0.3 in fact) and not -6 dB as you seem to want.
by the way, looking at the output, ampdb doesn't seem to be extremely
precise. or is it?
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From: Paul Barton-Davis
To: csound@maths.ex.ac.uk
Subject: k-time conditional goto: ?
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Am I the only one who thinks that this code:
void kcgoto(CGOTO *p)
{
if (*p->cond)
pds = p->lblblk->prvp;
}
doesn't match my expectations of the expression:
if (kvar REL kvar) kgoto label
I would have expected (kvar REL kvar) to be evaluated every k-cycle,
but instead, its evaluated once, during orchestra compilation. In
essence, its no different that icgoto(), except that its opcode type
signature requires k-time arguments.
Am I mistaken here ?
--p
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From: Paul Barton-Davis
To: csound@maths.ex.ac.uk
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Completely ignore my last message. Consider it a brain-fart. Or
evidence of lack of sleep and or liquid.
--p
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From: jpff@maths.bath.ac.uk
Subject: Localization of Csound
To: csound@maths.ex.ac.uk
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Message written at 10 May 1999 07:23:11 +0100
Just a progress report. I have a set of csoudn sources in which all
relevant strings are surrounded by a macro. At present this is a two
argument macro, a unique number and a string. I have not decided
whether to use gettext or to roll my own (we had such a system in
Cambrisge Lisp for years, from about 1976 onwards).
At present the macro is set to return teh string so there is no
actual change, but you may see signs of it in any future code from me.
Talking about future code, I would like to send out v3.54 in the
next week or so. There are some minor error-fixes, and a couple of
new opcodes -- not very much actually, but I do want to incorporate
soem of Gabriel's stuff into this version.
==John ffitch
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From: jpff@maths.bath.ac.uk
Subject: [OT] Undergraduate Course
To: csound@maths.ex.ac.uk
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Message written at 10 May 1999 07:17:07 +0100
I have been asked to draft a syllabus for a final year computing
science course on computer music -- we have been teaching speech for
some years but the researcher in that area retires at teh end of the
year. This course is aimed at mathematically able computer students,
with (modest) programming and software engineering skills. I cannot
assume much mathematical knowledge, but it would be legitamate to
teach mathematics.
Clearly my bias is towards using Csound, and some of the
computational problems, but I thought I would ask if anyone else has
experience of such a course, and if so what they cover. I have some
time to get this arranged, as it would not run until late 2000, so a
draft by September/october is my aim.
I am not sure if this is of interest to any but me, so personal
e-mail might be best, althiugh there may be some general issues in
education here.
==John ffitch
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From: J P Fitch
To: Tobiah
cc: csound@maths.ex.ac.uk
Subject: Re: pvanel file format
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Dan Ellis wrote the pvoc stuff -- hence ellis
==John
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Date: Mon, 10 May 1999 09:34:19 +0200 (MET DST)
From: Thomas Huber
Subject: Noise LFO
To: csound@maths.ex.ac.uk
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Hallo,
I have the following problem: I wanted to use 'samphold' to
generate a noise LFO, that means, an LFO that changes it's
output value at an adjustable (low) rate. I first generated
noise using 'rand' then passed it to 'samphold'. The 'gate'
port of the 'samphold' was fed by a vco in squarewave mode
with a very low pulse width.
It worked fine, but there is a little thing I don't like. The
low pulsewidth vco is not an ideal 'gate' generator for the
samphold. I want the gate function to be 0 all the time except 1
sample every cycle of it's frequency. How can this be done ?
My idea is that this is something we aren't able to do easily
in csound at the moment, so I would suggest a new opcode called
'aout spike kfrequency'. It should generate spikes with
adjustable frequency that are just 1 sample period long. Maybe
we could add another parameter that defines for how many sample
cycles the output should go to 1. This would then be a
super-precise PWM oscillator (which generates nice aliasing (-;,
but it's use would be the triggering of samphold, not to create
an audio signal).
Or do I miss something, an this functionality can already be
done with another opcode ?
Thomas
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Date: Mon, 10 May 1999 10:04:54 +0200
From: Roger Klaveness
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Subject: Csound & SGI
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Have someone experienced troble with Csound on SGI machines producing
gaps in the output file?
Have one O2 and two Indigo2, the O2 is running IRIX 6.3 and the Indigo's
IRIX 6.2
The O2 and one of the Indigo's is producing soundfiles with gaps with
silence in it.
This happens both with csound 3.48 and with 3.53
It works fine on linux and the other Indigo, so I guess it's not the
orchestra that is wrong.
What's strange is that only one of the two Indigo's is producing errors,
even they got the same
version of the OS.
All machines are planned upgraded to IRIX 6.5 in the near future but if
someone have any experience with
this, it would nice to get some advice.
Roger Klaveness
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To: csound@maths.ex.ac.uk
From: Jens Groh
Subject: Re: Noise LFO
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huber@iamexwi.unibe.ch (Thomas Huber) wrote:
>[...]
>I have the following problem: I wanted to use 'samphold' to
>generate a noise LFO, that means, an LFO that changes it's
>output value at an adjustable (low) rate. I first generated
>noise using 'rand' then passed it to 'samphold'. The 'gate'
>port of the 'samphold' was fed by a vco in squarewave mode
>with a very low pulse width.
>It worked fine, but there is a little thing I don't like. The
>low pulsewidth vco is not an ideal 'gate' generator for the
>samphold. I want the gate function to be 0 all the time except 1
>sample every cycle of it's frequency. How can this be done ?
>[...]
I suppose that k-rate is sufficient, because you are talking of a LFO. Then
'trigger' should be the right opcode for you.
Jens Groh
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From: Jim Stevenson
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To: csound@maths.ex.ac.uk, jpff@maths.bath.ac.uk
Subject: Re: [OT] Undergraduate Course
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Course notes for any such courses would be highly appreciated.
Thanks.
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Date: Mon, 10 May 1999 04:12:32 -0700
From: Jim Stevenson
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To: csound@maths.ex.ac.uk, jpff@maths.bath.ac.uk
Subject: Re: [OT] Undergraduate Course
Course notes for any such courses would be highly appreciated.
Thanks.
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Date: Mon, 10 May 1999 13:57:01 +0100
From: Fokke de Jong
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To: csound@maths.ex.ac.uk
Subject: Re: Noise LFO
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Thomas Huber wrote:
>
> Hallo,
>
> I have the following problem: I wanted to use 'samphold' to
> generate a noise LFO, that means, an LFO that changes it's
> output value at an adjustable (low) rate. I first generated
> noise using 'rand' then passed it to 'samphold'. The 'gate'
> port of the 'samphold' was fed by a vco in squarewave mode
> with a very low pulse width.
> It worked fine, but there is a little thing I don't like. The
> low pulsewidth vco is not an ideal 'gate' generator for the
> samphold. I want the gate function to be 0 all the time except 1
> sample every cycle of it's frequency. How can this be done ?
>
> My idea is that this is something we aren't able to do easily
> in csound at the moment, so I would suggest a new opcode called
> 'aout spike kfrequency'. It should generate spikes with
> adjustable frequency that are just 1 sample period long. Maybe
> we could add another parameter that defines for how many sample
> cycles the output should go to 1. This would then be a
> super-precise PWM oscillator (which generates nice aliasing (-;,
> but it's use would be the triggering of samphold, not to create
> an audio signal).
>
> Or do I miss something, an this functionality can already be
> done with another opcode ?
>
> Thomas
Why not use randh, which is a sample&hold in itself and there is no need
for an additional pulse generator.
the opcode is :-
kr randh kamp, kcps[, iseed, ityp]
Fokke de Jong. |