is there a problem with loscil and long audio files? trying to render a
very simple csd using loscil, i was getting only silence. the instrument
used a table created with gen01, deferred size. the sound file was stereo,
some 49 seconds long.

i couldn't spot any errors in the sound file or in the code, and csound
didn't warn me of any, either.

so i tried with a smaller file, and it worked fine. by trial and error, i
concluded that loscil failed to produce any sound when the sound file
stored in the table was longer than about 48 seconds long (for stereo
files, at least)

i couldn't find any reference to a limit of the file size for loscil.

best,

lj


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What is the sample rate of the file that's refusing to play? I'm wondering
whether the problem has to do with the amount of time spanned by the file,
or (more likely) with the faw size of the file.

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on 2011-07-22 at 19:25 Jim Aikin wrote:

>What is the sample rate of the file that's refusing to play? 

44100


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Could you post a copy of your csd?

Francois

Le 23/07/2011 03:03, luis jure a écrit :
> is there a problem with loscil and long audio files? trying to render a
> very simple csd using loscil, i was getting only silence. the instrument
> used a table created with gen01, deferred size. the sound file was stereo,
> some 49 seconds long.
>
> i couldn't spot any errors in the sound file or in the code, and csound
> didn't warn me of any, either.
>
> so i tried with a smaller file, and it worked fine. by trial and error, i
> concluded that loscil failed to produce any sound when the sound file
> stored in the table was longer than about 48 seconds long (for stereo
> files, at least)
>
> i couldn't find any reference to a limit of the file size for loscil.
>
> best,
>
> lj
>
>
> Send bugs reports to the Sourceforge bug tracker
>              https://sourceforge.net/tracker/?group_id=81968&atid=564599
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
>


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Just a thought 49s corresponds to 4321800 samples,  Are you using doubles
or floats?  That would affect the table size (34574400 bytes or 17287200
bytes).

  I guess someone should look at the code....

>
> is there a problem with loscil and long audio files? trying to render a
> very simple csd using loscil, i was getting only silence. the instrument
> used a table created with gen01, deferred size. the sound file was stereo,
> some 49 seconds long.
>
> i couldn't spot any errors in the sound file or in the code, and csound
> didn't warn me of any, either.
>
> so i tried with a smaller file, and it worked fine. by trial and error, i
> concluded that loscil failed to produce any sound when the sound file
> stored in the table was longer than about 48 seconds long (for stereo
> files, at least)
>
> i couldn't find any reference to a limit of the file size for loscil.
>
> best,
>
> lj
>
>
> Send bugs reports to the Sourceforge bug tracker
>             https://sourceforge.net/tracker/?group_id=81968&atid=564599
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
> csound"
>
>
>
>




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There is an error in the stereo version of loscil.  There is a simple fix,
but I will seeif there is a faster fix.....

>
> is there a problem with loscil and long audio files? trying to render a
> very simple csd using loscil, i was getting only silence. the instrument
> used a table created with gen01, deferred size. the sound file was stereo,
> some 49 seconds long.
>
> i couldn't spot any errors in the sound file or in the code, and csound
> didn't warn me of any, either.
>
> so i tried with a smaller file, and it worked fine. by trial and error, i
> concluded that loscil failed to produce any sound when the sound file
> stored in the table was longer than about 48 seconds long (for stereo
> files, at least)
>
> i couldn't find any reference to a limit of the file size for loscil.
>
> best,
>
> lj
>
>
> Send bugs reports to the Sourceforge bug tracker
>             https://sourceforge.net/tracker/?group_id=81968&atid=564599
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
> csound"
>
>
>
>




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>
> There is an error in the stereo version of loscil.  There is a simple fix,
> but I will seeif there is a faster fix.....
>

or not...  Not convinced that it is a bug now.  We really need the example
to investigate.  This opcode is internally very contorted.

==John ff
  (who needs a cup o coffee!)



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on 2011-07-23 at 08:55 jpff@cs.bath.ac.uk wrote:

>or not...  Not convinced that it is a bug now.  We really need the example
>to investigate.

you mean the .csd? there's nothing to it, really, see below. just make sure
that you use a sound file at least 48 seconds long.






sr = 44100
ksmps = 10
0dbfs = 1
nchnls = 2

instr 1

a1, a2	loscil	1, 1, 1, 1
outs a1, a2

endin





f1 0 0 1 "yourfile.wav" 0 0 0

i1	0	48





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or UDOs like these (using poscil3):
mono: http://www.csounds.com/udo/displayOpcode.php?opcode_id=83
stereo: http://www.csounds.com/udo/displayOpcode.php?opcode_id=84
quadro: http://www.csounds.com/udo/displayOpcode.php?opcode_id=87
octo: http://www.csounds.com/udo/displayOpcode.php?opcode_id=88

	joachim

Am 23.07.2011 14:50, schrieb Victor Lazzarini:
> or poscil 
> 
> There is definitely something funny with loscil.
> 
> Victor
> On 23 Jul 2011, at 12:22, Iain McCurdy wrote:
> 
>> I've done some tests and it seems the limitation is a table size of
>> 2097152 (both mono and stereo loscil on 5.13 Mac and Win) - this would
>> correspond with ~48sec of mono audio at 44100. On older versions of
>> Csound (5.10 linux doubles) the limit is 1048576 and this was my
>> previous experience of the problem. This issue has been present for as
>> long as I can remember. The workaround is to just use flooper, lposcil
>> or tablei but I suppose it would be nice if loscil wasn't so limited
>> as it does have some features the others don't.
>> Hope some of this helps,
>> Iain
>>
>> > Date: Sat, 23 Jul 2011 08:55:49 +0100
>> > From: jpff@cs.bath.ac.uk 
>> > To: csound@lists.bath.ac.uk 
>> > Subject: Re: [Csnd] loscil and long files
>> > 
>> > >
>> > > There is an error in the stereo version of loscil. There is a
>> simple fix,
>> > > but I will seeif there is a faster fix.....
>> > >
>> > 
>> > or not... Not convinced that it is a bug now. We really need the example
>> > to investigate. This opcode is internally very contorted.
>> > 
>> > ==John ff
>> > (who needs a cup o coffee!)
>> > 
>> > 
>> > 
>> > Send bugs reports to the Sourceforge bug tracker
>> > https://sourceforge.net/tracker/?group_id=81968&atid=564599
>> 
>> > Discussions of bugs and features can be posted here
>> > To unsubscribe, send email sympa@lists.bath.ac.uk
>>  with body "unsubscribe csound"
>> > 
> 
> Dr Victor Lazzarini
> Senior Lecturer
> Dept. of Music
> NUI Maynooth Ireland
> tel.: +353 1 708 3545
> Victor dot Lazzarini AT nuim dot ie
> 
> 
> 


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hello,
does anyone know about a university or universities where is possible to do an MA in electroacoustic music composition where csound is the main instrument?. 'Main instrument' means that most/all the courses matters (sound synthesis, dsp, acoustics,math, programming) are studied/practiced through/with csound.

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Hello,

Yes there's several places where you could do this.
Some time ago (years), we talked on this list about making a
list/overview of Csound schools,
I don't recall it actually being made (or maybe I'm mistaken).

At NTNU in Trondheim you can take a master in music technology, where
your master thesis is based on electroacoustic composition in Csound.
We also base our DSP teaching on Csound, and we use Csound throughout
many of our bachelor and masters courses.

best
Oeyvind Brandtsegg
Professor of Music Technology
NTNU

2011/7/24 peiman khosravi :
> Hello,
>
> At least where I studied (City university London) an MA in composition just
> implies that you are going to compose and write a thesis about whatever
> subject that relates to your compositions in whichever way. So yes sure you
> could work only with Csound if you choose to!
>
> P
>
>
> On 23/07/2011 22:31, Csounder Csounder wrote:
>
> hello,
> does anyone know about a university or universities where is possible to do
> an MA in electroacoustic music composition where csound is the main
> instrument?. 'Main instrument' means that most/all the courses matters
> (sound synthesis, dsp, acoustics,math, programming) are studied/practiced
> through/with csound.
>
>
>
> Send bugs reports to the Sourceforge bug tracker
>             https://sourceforge.net/tracker/?group_id=81968&atid=564599
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
> csound"
>
>
>
>
>


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who were the composers that guided/helped/teached you there? Nothing is mentioned in the university site (http://www.city.ac.uk/courses/postgraduate/music-ma) about any knowledge of the staff on csound-dsp-acoustics-programming-math

From: peiman khosravi <peimankhosravi@gmail.com>
To: csound@lists.bath.ac.uk
Sent: Sunday, July 24, 2011 1:41 AM
Subject: Re: [Csnd] MA where csound is the main instrument for most/all the

Hello,

At least where I studied (City university London) an MA in composition just implies that you are going to compose and write a thesis about whatever subject that relates to your compositions in whichever way. So yes sure you could work only with Csound if you choose to!

P


On 23/07/2011 22:31, Csounder Csounder wrote:

hello,
does anyone know about a university or universities where is possible to do an MA in electroacoustic music composition where csound is the main instrument?. 'Main instrument' means that most/all the courses matters (sound synthesis, dsp, acoustics,math, programming) are studied/practiced through/with csound.

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I'm sort of looking for the same thing!

On 7/23/11, Csounder Csounder  wrote:
> hello,
> does anyone know about a university or universities where is possible to do
> an MA in electroacoustic music composition where csound is the main
> instrument?. 'Main instrument' means that most/all the courses matters
> (sound synthesis, dsp, acoustics,math, programming) are studied/practiced
> through/with csound.
>
>
>
>
> Send bugs reports to the Sourceforge bug tracker
>             https://sourceforge.net/tracker/?group_id=81968&atid=564599
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
> csound"
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> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
> csound"
>
>


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http://music.nuim.ie/courses/postgraduate/taughtcoursesma/macomputermusic/hdipmusictechnology

Victor
On 25 Jul 2011, at 00:17, Adam Puckett wrote:

> I'm sort of looking for the same thing!
>
> On 7/23/11, Csounder Csounder  wrote:
>> hello,
>> does anyone know about a university or universities where is  
>> possible to do
>> an MA in electroacoustic music composition where csound is the main
>> instrument?. 'Main instrument' means that most/all the courses  
>> matters
>> (sound synthesis, dsp, acoustics,math, programming) are studied/ 
>> practiced
>> through/with csound.
>>
>>
>>
>>
>> Send bugs reports to the Sourceforge bug tracker
>>             https://sourceforge.net/tracker/?group_id=81968&atid=564599
>> Discussions of bugs and features can be posted here
>> To unsubscribe, send email sympa@lists.bath.ac.uk with body  
>> "unsubscribe
>> csound"
>> Send bugs reports to the Sourceforge bug tracker
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>> "unsubscribe
>> csound"
>>
>>
>
>
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> "unsubscribe csound"
>

Dr Victor Lazzarini
Senior Lecturer
Dept. of Music
NUI Maynooth Ireland
tel.: +353 1 708 3545
Victor dot Lazzarini AT nuim dot ie





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