Released on: March 26, 2008, 4:43 am

Press Release Author: Endre Domiczi

Industry: Telecommunications

Press Release Summary: Sevana Oy today announces the immediate availability of
Vocoders Quality Analyzer 2.1, a new tool that enables speech codec developers to
automatically check voice quality that is returned after processing in a voice
coder. Featuring a unique speech model and algorithms, based on patents RU 61924 and
RU 2312405, the product is one of the easiest and fastest ways to check a vocoder\'s
quality.

Press Release Body: HELSINKI, Finland - March 20, 2008 - Sevana Oy today announces
the immediate availability of Vocoders Quality Analyzer 2.1, a new tool that enables
speech codec developers to automatically check voice quality that is returned after
processing in a voice coder. Featuring a unique speech model and algorithms, based
on patents RU 61924 and RU 2312405, the product is one of the easiest and fastest
ways to check a vocoder\'s quality.

Typically, quality of voice coders is measured according to the Mean Opinion Score
(MOS), which provides a numerical indication of the perceived quality of received
media after compression. The MOS is expressed as a single number in the range 1 to
5, where 1 is lowest perceived quality, and 5 is the highest perceived quality.
Obtaining MOS estimations is time-consuming and expensive as it requires hiring
experts to make estimations. When a voice coding system is under development, or the
developer has to test and compare a couple of audio systems, it\'s very important to
have a possibility for a quick check. Vocoders Quality Analyzer provides precise
estimations automatically without the need for overpaid experts. According to the
internal tests, the product provides results quite close to what CISCO Systems
provide as MOS values for different codecs, but much faster.

The mechanism of checking a vocoder\'s quality works like this. Vocoders Quality
Analyzer requests the codec\'s frame size and generates a test set of audio data
according to the proper frame size. Then a correspondent vocoder is loaded from the
DLL and the program passes the audio signal array together with all parameters into
it. Vocoder starts encoding. Original and decoded signals are compared using an
internal audio signal comparison function, and a window with signal similarity
coefficient is displayed. 100% corresponds to identical signals.

The demo version of the product lets developers test their own vocoders but
comparison of two audio files is available only in the full version.

On request, Sevana engineers can provide custom editions of the product tailored
specifically to the needs and software projects of the customer.

Vocoders Quality Analyzer 2.1 is available today.

About Sevana Oy

The company was founded in 2003 and specializes in the production of affordable
software with competitive features, as well as providing outsourcing services. So
far the company has developed solutions for data mining, speech processing and
business processes automation for SMEs. For more information, please visit
http://www.sevana.fi.
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NOTE TO EDITORS: For additional information visit www.sevana.fi or call +358 9
23164165.

Product page: http://www.sevana.fi/audio_speech_codecs_quality_analysis.php
Download link: http://www.sevana.fi/speech/VQDemo.zip
Company website: http://www.sevana.fi
E-mail: ceo@sevana.fi

Postal address:
Sevana Oy
c/o Ecotax AB
Agricolankatu 11
00530 Helsinki
Finland

Phone: +358 9 23164165
Mobile: +372 53485178

Web Site: http://www.sevana.fi

Contact Details: Endre Domiczi
Sevana Oy
CEO/Co-founder
+358 9 23164165
ceo@sevana.fi