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Hands-Free Audio and its Application to Telecommunication Terminals

Authors:
Martin Schönle, Christophe Beaugeant, Kai Steinert, Heinrich W. Löllmann, Bastian Sauert, and Peter Vary
Book Title:
Proceedings of International AES Conference, "Audio for Mobile and Handheld Devices"
Venue:
Seoul, Korea
Event Date:
2.-4.9.2006
Organization:
AES
Location:
New York, NY
Date:
Sept. 2006
Pages:
1–7
ISBN:
0-937-80358-8
URL:
http://www.aes.org/e-lib/browse.cfm?elib=13874
Language:
English

Abstract

In this paper we focus on the enhancement of speech quality by hands-free audio systems in modern, multimedia enabled telecommunication terminals. Requirements like the compatibility with wideband audio and full-duplex hands-free operation demand for sophisticated system designs. As a starting point we introduce a state-of-the-art system developed for mobile phones, considering practical aspects of algorithm design. Algorithmic extensions to this solution are presented, supporting speech enhancement for the user of the terminal or reducing the round-trip delay. In addition, more advanced concepts are discussed. They offer the capability of joint design for the most important algorithms and provide the possibility to exploit psychoacoustic properties of the human ear.

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