Re: [codec] Listening tests at Google

Jonathan Rosenberg <jdrosen@jdrosen.net> Sun, 21 August 2011 23:46 UTC

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Date: Sun, 21 Aug 2011 19:47:28 -0400
From: Jonathan Rosenberg <jdrosen@jdrosen.net>
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Subject: Re: [codec] Listening tests at Google
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Excellent! Thank you Jan. Please post results when you have them.

Thanks,
Jonathan R.

On 8/19/2011 6:28 PM, Jan Skoglund wrote:
> Hey,
>
> We've prepared some listening tests for Opus on Mandarin speech and
> transcoding (English) speech at Google. We started the tests today and
> will have results at the end of August. The tests are split in four
> MUSHRA groups:
>
> Test 1a - Mandarin NB
> --------------------------
> Opus NB
> Speex NB
> iLBC NB
> Reference and 2 anchors (LP 3.5 kHz and MNRU of 15 dB)
>
> Test 1b - Mandarin "HD Voice" (WB, FB)
> --------------------------------------------------------
> Opus FB
> G.719 FB
> Opus WB
> Speex WB
> G.722.1 WB
> Reference and 2 anchors (LP 3.5 kHz and LP 7 kHz)
>
> Test 2a - Transcoding NB
> -------------------------------
> G.711 ->  Opus NB
> G.711 ->  AMR-NB
> Opus NB ->  G.711 ->  AMR-NB
> AMR-NB ->  G.711 ->  Opus NB
> AMR-NB ->  G.711 ->  AMR-NB
> Reference and 2 anchors (LP 3.5 kHz and MNRU of 15 dB)
>
> Test 2b - Transcoding WB
> --------------------------------
> Opus WB
> AMR-WB
> Opus WB ->  AMR-WB
> AMR-WB ->  Opus WB
> Reference and 2 anchors (LP 3.5 kHz and LP 7 kHz)
>
>
> Cheers,
> Jan
> _______________________________________________
> codec mailing list
> codec@ietf.org
> https://www.ietf.org/mailman/listinfo/codec

-- 
Jonathan D. Rosenberg, Ph.D.                   SkypeID: jdrosen
Skype Chief Technology Strategist
jdrosen@skype.net                              http://www.skype.com
jdrosen@jdrosen.net                            http://www.jdrosen.net