Re: [LAU] Q: does jackd mix?

On Mon, Oct 26, 2009 at 2:07 PM, Jonathan E. Brickman
<jeb@email-addr-hidden> wrote:
> OK, perhaps a stupid question:  does jackd mix?  In other words, let's
> say we have two or more audio applications outputting to Jack; will Jack
> mix the streams?  Or does it send them each independently to the sound
> driver?

Well, yes. The mixing is done on a port-by-port basis. Whenever
there is more than one input connected to a JACK port the
corresponding samples are added together.

This can produce float values greater than 1.0, which will overflow
when routed to a physical output device. But, there are many JACK
applications that allow you to adjust output levels.

-- 
 joq
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