Re: [codec] Adopt draft-valin-codec-results as a working group item

"Christian Hoene" <hoene@uni-tuebingen.de> Tue, 23 August 2011 11:22 UTC

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From: "Christian Hoene" <hoene@uni-tuebingen.de>
To: <Bernhard.Feiten@telekom.de>, <codec@ietf.org>
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Date: Tue, 23 Aug 2011 13:23:13 +0200
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Subject: Re: [codec] Adopt draft-valin-codec-results as a working group item
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Dear Herr Dr. Bernhard Feiten,

You are complete right. We discuss this point during the last meeting and
agreed that more care should be taken to objectively report the results of
the listening-only tests.

Your input is appreciated and will be considered in the next version of the
document.

With best regards,

 Christian Hoene


----------------------------------------------------------------------------
-----
Dr.-Ing. Christian Hoene, University of Tübingen, Computer Science, Chair of
Communication Networks, Research Group Interactive Communication Systems
(ICS)
Sand 13, 72076 Tübingen, Germany, Tel +49 7071 2970532,
www.net.uni-tuebingen.de


> -----Original Message-----
> From: codec-bounces@ietf.org [mailto:codec-bounces@ietf.org] On Behalf
> Of Bernhard.Feiten@telekom.de
> Sent: Tuesday, August 23, 2011 1:13 PM
> To: codec@ietf.org
> Subject: Re: [codec] Adopt draft-valin-codec-results as a working group
item
> 
> Dear all,
> 
> I think the results document is not suffiently documenting the quality
> comparison of the Opus with other codecs.
> From the cited tests mainly the positive aspects are excerpted and
decribed
> verbally only. The full context and the exact results of the tests are not
> presented. This is not appropriate for the characterisation of a codec.
> 
> To give one example I cite the following sentence.
> "Opus at 32 kbps is almost transparent, although there
> is a small, but statistically significant, difference from the
> fullband reference material."
> This statement is very vague and sounds not serious to me.
> 
> I would be happy, if tables showing the average values and confidence
> intervals per content and coding condition could added.
> 
> Best regards,
> Bernhard Feiten
> 
> 
> Deutsche Telekom AG
> T-Labs (Research & Development)
> Dr. Bernhard Feiten
> Winterfeldtstraße 21, 10781 Berlin
> +49 30 8353 58147 (Tel.)
> +49 000 000-0000 (Fax)
> +49 171 563 58 34 (Mobil)
> E-Mail: mailto:bernhard.feiten@telekom.de
> http://www.telekom.com
> 
> 
> Deutsche Telekom AG
> Aufsichtsrat: Prof. Dr. Ulrich Lehner (Vorsitzender)
> Vorstand: René Obermann (Vorsitzender),
> Dr. Manfred Balz, Reinhard Clemens, Niek Jan van Damme,
> Timotheus Höttges, Edward R. Kozel, Thomas Sattelberger
> Handelsregister: Amtsgericht Bonn HRB 6794
> Sitz der Gesellschaft Bonn
> 
> 
> 
> -----Ursprüngliche Nachricht-----
> Von: codec-bounces@ietf.org [mailto:codec-bounces@ietf.org] Im Auftrag
> von Jonathan Rosenberg
> Gesendet: Montag, 22. August 2011 22:55
> An: codec@ietf.org
> Betreff: [codec] Adopt draft-valin-codec-results as a working group item
> 
> The chairs would like to take a poll for consensus to adopt:
> http://datatracker.ietf.org/doc/draft-valin-codec-results/
> 
> as a working group item, matching our deliverable of a testing document
> based on our updated charter.
> 
> As with any other working group item, adoption means that the group
> feels that the document is a good starting point to achieving this
> milestone.
> 
> Please reply with your opinion.
> 
> Thanks,
> Jonathan R.
> --
> 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
> 
> 
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