Re: Help - Max Stream Support in Alsa

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Le Wed, 8 Apr 2009 14:29:56 +0530,Arulselvan Maillist <maillistarulselvan@xxxxxxxxx> a écrit :
> Hi,> > what is the maximum number aplay applications that can be played through> ALSA.> > And if i have two aplay applications playing seperately in two terminals,> how can increase or decrease the volume of individual streams.
You cannot. You will have to use a player that have volume control. Thealsaplayer can be run as a daemon and you can control it from a terminal. Youcan run several alsaplayer daemon if you want to and control them. For that towork, you have to give them different names (man alsaplayer).
> > if i do "amixer set Master 100" it increases or decreases both streams> volumes.
It's normal, alsa is a hardware driver, not a software volume control.
Another way is to run jack as sound server. It is several mixers for it. Asexample, you can add as many volume control than needed with jackmixer andconnect them with every jack input or output (hardware or software) withqjackctl.
Some jack users are using a rt-kernel, but you will not need it so long you arenot doing heayvy uses of software synths or audio filters. 
Dominique
> > Regards,> Arulselvan
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