Re: Two more questions

On 11/16/2012 01:43 PM, Chris Robinson wrote:
> Generally speaking, you should only need one context to handle playback.
> Different sources can be set to play based on their individual roles
> (with or without reverb, with or without 3D positioning, different
> volumes, etc) within a single context.
>
> You should only ever need a separate context if you either need to
> output to a different device (in which case it's created from a separate
> device), or if you need two independent context states (so changing one
> context doesn't affect the other).

Just to clarify, you also separate contexts if you need multiple 
listeners, each with their own positions/orientations (this would be 
multiple different context states, as Chris referred to it above).  This 
will be important if you're trying to render sound to each user from his 
or her own perspective.  So, if Listener A is near a train and Listener 
B is farther away, the sounds from the train would be louder for 
Listener A than for Listener B.

If there's only one listener involved, if all of your listeners will be 
in the same place, or if you just don't care much about spatialization 
of the rendered audio, then there's no reason to have multiple 
listeners, and all users can just share the audio output from a single 
listener and hence, a single context.

--"J"

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