Re: [codec] I-D Action:draft-ietf-codec-opus-05.txt

Hi Jean-Marc,
I just test V0.9.3 code of DTX feature. The test result shows that DTX works abnormally when input frame size is 40ms, but it works fine if input frame is 20ms. 
Can you help to have a look on it.

Thanks
Keith

-----Original Message-----
From: Keith Yan 
Sent: 2011年3月16日 11:33
To: 'Jean-Marc Valin'; codec@ietf.org
Subject: RE: [codec] I-D Action:draft-ietf-codec-opus-05.txt

Dear Jean-Marc,
I have tested V0.9.2 code, and find if enable DTX, it will return from range checking, error code is Error: Range coder state mismatch between encoder and decoder.
And if not define OPUS_TEST_RANGE_CODER_STATE, the decoded file has sharp noise in the silence area. The left channel of test.wav is origin voice, and the right channel is encode/decode with DTX enabled.

Please check it.

Thanks
Keith

-----Original Message-----
From: Jean-Marc Valin [mailto:jmvalin@jmvalin.ca]
Sent: 2011年3月15日 13:16
To: codec@ietf.org
Subject: Re: [codec] I-D Action:draft-ietf-codec-opus-05.txt

Hi,

Just to let you know that the main change in that latest version is the ability to decode multi-frame packets. That code has received very little testing, so don't be surprised if it breaks. However, I did some amount of testing to at least make sure that random inputs do not cause buffer overruns and similar security issues.

Cheers,

	Jean-Marc

On 11-03-14 06:15 PM, Internet-Drafts@ietf.org wrote:
> A New Internet-Draft is available from the on-line Internet-Drafts directories.
> This draft is a work item of the Internet Wideband Audio Codec Working Group of the IETF.
>
>
> 	Title           : Definition of the Opus Audio Codec
> 	Author(s)       : J. Valin, K. Vos
> 	Filename        : draft-ietf-codec-opus-05.txt
> 	Pages           : 199
> 	Date            : 2011-03-14
>
> This document describes the Opus codec, designed for interactive 
> speech and audio transmission over the Internet.
>
> A URL for this Internet-Draft is:
> http://www.ietf.org/internet-drafts/draft-ietf-codec-opus-05.txt
>
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
>
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> Internet-Draft.
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