[linux-audio-dev] mux concept paper

[Dave Phillips]

Hi Fernando:

  I built PortAudio (v19 I believe) with ALSA and JACK support but I 
haven't used it with JACK at all. When building Cs5 Scons will assume 
your PortAudio has been built with JACK, you need to specify if it isn't.

Best,

dp




>On Thu, 2005-02-17 at 05:40, Dave Phillips wrote:
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>>Walco wrote:
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>>>Hi Mimo,
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>>>
>>>>I have put online the beginngs of a concept paper for an audio 
>>>>program I have been wanting to write for quite a while now. I 
>>>>wondered whether you could give me some feedback on it and share some 
>>>>of your experiences with me. A while ago I decided to call this *mux* 
>>>>where the name stands for nothing in particular. I have tested a 
>>>>couple of similiar audio apps for linux recently, and then toyed 
>>>>around with libraries I found on the net. I might be reinventing the 
>>>>wheel once more, but that's up for discussion.. The paper is work in 
>>>>progress, I'm hoping to add to it tomorrow night.
>>>>Looking forward to hear back from you and thanks for any input..
>>>>PS.: the paper is here http://mimo.gn.apc.org/mux/
>>>>        
>>>>
>>>[snip]
>>>Another thing: I don't agree with the assessment in your paper that jack
>>>is heavy-weight -  and I think jack is much more natural fit to your
>>>application as jackd has xrun detection, already provides means to set a
>>>lower samplerate and increase period size if your system can't put up
>>>with the load. IMHO jack is the way to go if your target platform is
>>>only Linux (or OSX & BSD), otherwise the cross-platform PortAudio may be
>>>more appropriate.
>>>      
>>>
>>I'll chime in here. I've been testing Csound5 quite a lot lately, it 
>>supports PortAudio (as well as ALSA and JACK) and PortMIDI. Frankly, I'm 
>>not impressed with default realtime performance under PortAudio. I can 
>>improve performance with some judicious buffer tweaks, but the native 
>>ALSA driver is much better.
>>    
>>
>
>Just curious, what backend were you using with PortAudio? Alsa?
>-- Fernando
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