[PD] About internal delays

2007-11-27 Thread Mika Ristimäki
Hi, all

My first post.. how exciting =)

Well anyway...just one quick question. Does the audio buffer size that
can be adjusted with -audiobuf flag stay constant all the time? Or is
it something that PD adjusts dynamically in case of dropped frames or
something? I been having some delay related problems and it seems that
sometimes it changes quite randomly. The problem might also be with my
hardware so now I'm just trying to find the source of the problem.
Thanks...

-Mika



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Re: [PD] About internal delays

2007-11-27 Thread marius schebella
welcome to the pd-list!
I am not sure, if many people still use the audiobuf flag, but I think 
it works... (another method would be to set the buffer in the audio 
settings.)
and yes, it should stay stable during the whole time.
what where the problems you had? because if the audio buffer is too low 
and Pd cannot handle the amount of data, the sound is shut down. usually 
a large buffer allows you to more complicated calculation (but increases 
latency).
marius.


Mika Ristimäki wrote:
 Hi, all
 
 My first post.. how exciting =)
 
 Well anyway...just one quick question. Does the audio buffer size that
 can be adjusted with -audiobuf flag stay constant all the time? Or is
 it something that PD adjusts dynamically in case of dropped frames or
 something? I been having some delay related problems and it seems that
 sometimes it changes quite randomly. The problem might also be with my
 hardware so now I'm just trying to find the source of the problem.
 Thanks...
 
 -Mika
 
 
 
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Re: [PD] About internal delays

2007-11-27 Thread Mika Ristimäki
Hmm... Okay. Then the problem should be in the hardware. I'm doing  
this kind of room impulse response estimation with nlms method and I  
get nice impulse response but if there is some cracks in the sound  
(from cpu load and dropped frames I assume) the impulse response  
shifts with random delay which shouldn't happen. I am using RME  
Fireface 800 audio interface in windows xp environment. Does anyone  
knwo if that might cause some problems??

-Mika

Quoting marius schebella [EMAIL PROTECTED]:

 welcome to the pd-list!
 I am not sure, if many people still use the audiobuf flag, but I think
 it works... (another method would be to set the buffer in the audio
 settings.)
 and yes, it should stay stable during the whole time.
 what where the problems you had? because if the audio buffer is too low
 and Pd cannot handle the amount of data, the sound is shut down.
 usually a large buffer allows you to more complicated calculation (but
 increases latency).
 marius.


 Mika Ristimäki wrote:
 Hi, all

 My first post.. how exciting =)

 Well anyway...just one quick question. Does the audio buffer size that
 can be adjusted with -audiobuf flag stay constant all the time? Or is
 it something that PD adjusts dynamically in case of dropped frames or
 something? I been having some delay related problems and it seems that
 sometimes it changes quite randomly. The problem might also be with my
 hardware so now I'm just trying to find the source of the problem.
 Thanks...

 -Mika



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Re: [PD] About internal delays

2007-11-27 Thread Ypatios Grigoriadis
On 27/11/2007, Ypatios Grigoriadis [EMAIL PROTECTED] wrote:

 hi..



   and yes, it should stay stable during the whole time.


 I think this is wrong. Whenever cpu overloads audiotime waits.


 --
  Ypatios.




-- 
Ypatios.
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