W3C home > Mailing lists > Public > public-webrtc@w3.org > September 2012

Opus implementation

From: Alexey Aylarov <alexey@zingaya.com>
Date: Mon, 24 Sep 2012 11:59:27 -0700
To: "public-webrtc@w3.org" <public-webrtc@w3.org>
CC: "Cullen Jennings (fluffy)" <fluffy@cisco.com>
Message-ID: <CC85FB9F.1D956%alexey@zingaya.com>

According to the specs <http://www.opus-codec.org/>  Opus supports different
sampling rates from 8 kHz to 48 kHz, it would be great to support Opus
narrowband (8 kHz) to give developers a chance to use it in "small bandwidth
available" scenario for interoperability with existing VoIP solutions. Use
case: mobile device makes call to some Media Gateway which transcodes 8 kHz
Opus to G.711 or G.729 and then sends it to some SIP endpoint. We avoid
problems for the last mile connection since Opus is much better than G.711
in terms of PLC and bandwidth consumption.

As I understand Opus was only discussed as a solution for wideband audio so

Best Regards,
Received on Monday, 24 September 2012 18:59:59 UTC

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