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New PDF release: Topics in Acoustic Echo and Noise Control

By E. Hansler, G. Shmidt

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Rec. IV, 96–104, 1960. [20] A. von Zitzewitz: Considerations on acoustic echo cancelling based on realtime experiments, Proc. EUSIPCO ’90, 3, 1987–1990, Barcelona, Spain, 1990. Part II Multi-Microphone Processing 2 Joint Optimization of Acoustic Echo Cancellation and Adaptive Beamforming Wolfgang Herbordt1 , Walter Kellermann2 , and Satoshi Nakamura1 1 2 ATR – Spoken Language Communication Research Laboratories, Kyoto, Japan Telecommunications Laboratory, University Erlangen-Nuremberg, Germany For full-duplex hands-free acoustic human/machine interfaces, often a combination of acoustic echo cancellation and speech enhancement is required to suppress acoustic echoes, local interference, and noise.

Therefore, especially during the algorithm development phase, the availability of objective tests is desirable. In Chapter 11 both classes of tests are discussed. It is described how they can be performed and how their results have to be evaluated. Chapter 12 is concerned with auditory scene analysis. This techniques is inspired by the ability of humans to segregate a sound source from a mixture of multiple sources even from only a monophonic signal. A system for computational acoustic scene analysis (CASA) performs successively four subfunctions.

A. Berkley, O. M. M. Mitchell: Seeking the ideal in “hands-free” telephony, Bell Lab. , 52, 318–325, 1974. [3] A. , 39, 265–294, 1960. [4] W. F. Clemency, W. D. , 40, 649–668, 1961. 16 E. H¨ ansler, G. Schmidt [5] G. W. Elko, E. Diethorn, T. G¨ ansler: Room impulse response variation due to thermal fluctuation and its impact on acoustic echo cancellation, Proc. IWAENC ’03, 67–70, Kyoto, Japan, 2003. [6] J. W. Emling: General aspects of hands-free telephony, Comm. and Electronics, 76(5), 201–205, 1957.

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