[Vorbis] OGG compression optimization

[Sevana Oy]

PESQ comparison is related to AQuA Voice, which is used in VoIP, PSTN and 
mobile call quality assessment, because PESQ is an ITU-T standard that AQuA 
tends to compete with in voice quality evaluation.

We have done testing internally based on files represented here 
http://ff123.net/samples.html We have also tried to collect listening test 
information and sample files, but as we developed the concept only this year 
we didn't make a good study yet. Any resources where we can find materials 
for the study are greatly appreciated!

So far, what we have discovered is that this approach does optimize audio 
compression at least used for MP3 players, car players, streaming, 
podcasting and f.e. long recordings.

We welcome questions and will be happy to provide as much information as you 
request.

Thank you!

----- Original Message ----- 
From: "Gregory Maxwell" <gmaxwell at gmail.com>
To: "Sevana Oy" <sales at sevana.fi>
Cc: <xiphmont at xiph.org>; "Nikos Chantziaras" <realnc at arcor.de>; 
<vorbis at xiph.org>
Sent: Saturday, August 27, 2011 10:26 PM
Subject: Re: [Vorbis] OGG compression optimization


> On Sat, Aug 27, 2011 at 1:36 PM, Sevana Oy <sales at sevana.fi> wrote:
>> Thanks for joining the discussion. Yes, AQuA is "a yet another electronic
>> ear", but it's not one of pre-existing algorithms, 100% new approach. All
>> AQuA customers (that do exist in VoIP and telco) are not tied up with 
>> patent
>> use and royalties.
>
> All I can find on the pages there in a quick look is comparisons with
> AQuA and PESQ. Are there no studies showing good agreement between
> AQuA and real listening test results in large comparisons?