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.

Authors: Beaugeant, Christophe; Loellmann, Heinrich; Sauert, Bastian; Schoenle, Martin; Steinert, Kai; Vary, Peter
Affiliations: RWTH Aachen University; Siemens AG(See document for exact affiliation information.)
AES Conference: 29th International Conference: Audio for Mobile and Handheld Devices (September 2006)
Paper Number: 6-1
Publication Date: September 1, 2006
Subject: Audio for Mobile & Handheld Devices

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