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Re: [rtcweb] Query Regarding Mandatory audio codecs draft

Kiran Kumar Guduru <kiran.guduru@samsung.com> Fri, 25 April 2014 10:38 UTC

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Date: Fri, 25 Apr 2014 10:38:23 +0000
From: Kiran Kumar Guduru <kiran.guduru@samsung.com>
To: Jean-Marc Valin <jmvalin@mozilla.com>, "cary.bran@plantronics.com" <cary.bran@plantronics.com>, "rtcweb@ietf.org" <rtcweb@ietf.org>
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Subject: Re: [rtcweb] Query Regarding Mandatory audio codecs draft
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Samsung Enterprise Portal mySingle

Dear Jean-Marc,

Please correct me if my understanding is wrong.

Spec prefers G.711 at 8 kHz sampling rate and RECOMMENDS Opus above 8 kHz sampling rate.

 

Is my understanding correct?

 

 

 

------- Original Message -------

Sender : Jean-Marc Valin<jmvalin@mozilla.com>

Date : Apr 25, 2014 19:30 (GMT+09:00)

Title : Re: Query Regarding Mandatory audio codecs draft

 

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On 25/04/14 06:21 AM, Kiran Kumar Guduru wrote:
> Is that means spec is recommending G.711 (PCMA/PCMU) for sampling
> rate less than or equal to 8 kHz?

No. Opus is still a good idea for 8 kHz, but it's not 2119 RECOMMENDED
since there are valid (mostly complexity-related) reasons to use G.711
despite the higher bit-rate.

Jean-Marc
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