Re: [codec] Listening tests at Google

Butrus Damaskus <butrus.butrus@gmail.com> Fri, 21 October 2011 20:33 UTC

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Date: Fri, 21 Oct 2011 22:33:35 +0200
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From: Butrus Damaskus <butrus.butrus@gmail.com>
To: Jan Skoglund <jks@google.com>
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Subject: Re: [codec] Listening tests at Google
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Ok, thanks for the clarification, sounds interesting!

On Fri, Oct 21, 2011 at 9:59 PM, Jan Skoglund <jks@google.com> wrote:
> I think it can be due to the character of Mandarin speech (although
> I'm not a linguist), which does not seem to contain as much high
> frequency-rich consonants as English. I noticed that during recording
> of the Mandarin speech, and discussing afterwards with the talkers,
> who said that there are much more, e.g., [s] sounds in English.
>
> On Thu, Oct 20, 2011 at 11:39 AM, Butrus Damaskus
> <butrus.butrus@gmail.com> wrote:
>> On Thu, Oct 20, 2011 at 4:32 PM, Jan Skoglund <jks@google.com> wrote:
>>> These results are pretty consistent
>>> with the previous results for English speech, with the difference that
>>> in the previous test Opus at 20 kbps outperformed G.719 at 32 kbps,
>>> which it did not this time.
>>
>> Does it mean that there is a regression or is it rather due to the
>> character of the Mandarine speech?
>>
>