Digital Speech Transmission

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The enormous advances in digital signal processing (DSP) technologyhave contributed to the wide dissemination and success of speechcommunication devices - be it GSM and UMTS mobile telephones,digital hearing aids, or human-machine interfaces. Digital speechtransmission techniques play an important role in theseapplications, all the more because high quality speech transmissionremains essential in all current and next generation communicationnetworks. Enhancement, coding and error concealment techniques improve thetransmitted speech signal at all stages of the transmission chain,from the acoustic front-end to the sound reproduction at thereceiver. Advanced speech processing algorithms help tomitigate a number of physical and technological limitations such asbackground noise, bandwidth restrictions, shortage of radiofrequencies, and transmission errors. Digital Speech Transmission provides a single-source,comprehensive guide to the fundamental issues, algorithms,standards, and trends in speech signal processing and speechcommunication technology. The authors give a solid, accessibleoverview of * fundamentals of speech signal processing * speech coding, including new speech coders for GSM andUMTS * error concealment by soft decoding * artificial bandwidth extension of speech signals * single and multi-channel noise reduction * acoustic echo cancellation This text is an invaluable resource for engineers, researchers,academics, and graduate students in the areas of communications,electrical engineering, and information technology.

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Peter Vary

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Audio & Speech Processing & Broadcasting Audio-, Sprachverarbeitung u. Übertragung Drahtlose Kommunikation Electrical & Electronics Engineering Elektrotechnik u. Elektronik Mobile & Wireless Communications Signal Processing Signalverarbeitung Sprachverarbeitung

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