Re: [codec] #15: Efficiently combine pre-encoded audio

"Benjamin M. Schwartz" <bmschwar@fas.harvard.edu> Wed, 12 May 2010 16:06 UTC

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Date: Wed, 12 May 2010 11:52:31 -0400
From: "Benjamin M. Schwartz" <bmschwar@fas.harvard.edu>
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To: Jean-Marc Valin <jean-marc.valin@octasic.com>
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Subject: Re: [codec] #15: Efficiently combine pre-encoded audio
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Reply-To: bens@alum.mit.edu

On 05/12/2010 11:44 AM, Jean-Marc Valin wrote:
> Benjamin M. Schwartz wrote:
>> The cheapest solution, of course, is transmit-side activity detection.
>> Maybe we need to specify a way for a receiver to request that the
>> transmitter employ (or not employ) VAD.
>
> I think you can do better than an encoder VAD.

I know that CELT makes decoder VAD very efficient, but how is decoder VAD 
better than encoder VAD?  Encoder VAD saves even more CPU, saves 
bandwidth, and enables easier jitter buffering.

Are you thinking about some sort of adaptive thresholding that requires 
knowing all streams' volume levels?

Anyway, VAD can run on both encode and decode sides at the same time.

--Ben

[codec] #15: Efficiently combine pre-encoded audio codec issue tracker
Re: [codec] #15: Efficiently combine pre-encoded … stephen botzko
Re: [codec] #15: Efficiently combine pre-encoded … Stephan Wenger
Re: [codec] #15: Efficiently combine pre-encoded … codec issue tracker
Re: [codec] #15: Efficiently combine pre-encoded … stephen botzko
Re: [codec] #15: Efficiently combine pre-encoded … Jean-Marc Valin
Re: [codec] #15: Efficiently combine pre-encoded … Cullen Jennings
Re: [codec] #15: Efficiently combine pre-encoded … Brian Rosen
Re: [codec] #15: Efficiently combine pre-encoded … Benjamin M. Schwartz
Re: [codec] #15: Efficiently combine pre-encoded … Jean-Marc Valin
Re: [codec] #15: Efficiently combine pre-encoded … stephen botzko
Re: [codec] #15: Efficiently combine pre-encoded … Benjamin M. Schwartz
Re: [codec] #15: Efficiently combine pre-encoded … Benjamin M. Schwartz
Re: [codec] #15: Efficiently combine pre-encoded … Jean-Marc Valin
Re: [codec] #15: Efficiently combine pre-encoded … Benjamin M. Schwartz
Re: [codec] #15: Efficiently combine pre-encoded … Roman Shpount
Re: [codec] #15: Efficiently combine pre-encoded … codec issue tracker
Re: [codec] #15: Efficiently combine pre-encoded … Roman Shpount
Re: [codec] #15: Efficiently combine pre-encoded … codec issue tracker
Re: [codec] #15: Efficiently combine pre-encoded … Christian Hoene
Re: [codec] #15: Efficiently combine pre-encoded … codec issue tracker