[opus] Stereo channel separation

Jean-Marc Valin jmvalin at jmvalin.ca
Wed Nov 20 14:04:43 PST 2013

On 11/20/2013 04:35 PM, O'Connor, Kevin wrote:
>> On 11/20/2013 03:37 PM, O'Connor, Kevin wrote:
>>> I have an application I intend to use Opus for that involves
>>> creating
>> recordings of two-party conversations where each party is saved as
>> a
>>> separate channel. Audio may be later processed or analyzed on a 
>>> per-party basis so if audio in one channel affects the other
>>> channel, it could create problems. My question is, if I use a
>>> single stereo Opus stream, how well will channel separation be
>>> maintained? Are there any other disadvantages to doing it this
>>> way?
>> If you encode as stereo, you should still have perfect channel
>> separation. However, the encoding will likely be less efficient
>> than having two separate streams. How much is not clear -- >you'll
>> have to experiment.
> Thanks for the quick reply. By "less efficient", do you mean in terms
> of the size of the compressed data or the CPU cycles consumed?

I mean in terms of quality vs size.


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