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Speech quality issues in mobile networks

Posted: 09 Sep 1999 ?? ?Print Version ?Bookmark and Share

Keywords:codec? tellabs? noise cancellation? hybrid echo? acoustic echo?

This paper describes the several sources of speech degradation in wireless mobile networks, and offer new methods for eliminating them. Sources of degradation including digital speech compression, tandem coding, background noise, hybrid echo, and acoustic echo will be described in detail. It also describe how modern signal processing technology, including echo and noise cancellation, automatic level control, and tandem CODEC avoidance is being used to eliminate these problems and improve speech quality.

View the PDF document for more information.



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