Speech Recognition Over Digital Channels

Robustness and Standards

By: Antonio Peinado, Jose Segura

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eText | 4 August 2006 | Edition Number 1

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Automatic speech recognition (ASR) is a very attractive means for human-machine interaction. The degree of maturity reached by speech recognition technologies during recent years allows the development of applications that use them. In particular, ASR shows an enormous potential in mobile environments, where devices such as mobile phones or PDAs are used, and for Internet Protocol (IP) applications.

Speech Recognition Over Digital Channels is the first book of its kind to offer a complete system comprehension, addressing the topics of distributed and network-based speech recognition issues and standards, the concepts of speech processing and transmission, and system architectures and robustness.

Describes the different client/server architectures for remote speech recognition systems, by means of which the client transmits speech parameters through a digital channel to a remote recognition server

Focuses on robustness against both adverse acoustic environments (in the front-end) and bit errors/packet loss
Discusses four ETSI standards for distributed speech recognition; the understanding of the standards and the technologies behind them
Provides the necessary background for the comprehension of remote speech recognition technologies

This book will appeal to a wide-ranging audience: engineers using speech recognition systems, researchers involved in ASR systems and those interested in processing and transmitting speech such as signal processing and communications communities. It will also be of interest to technical experts requiring an understanding of recognition over mobile and IP networks, and postgraduate students working on robust speech processing.