Titlebook: Sound Capture for Human / Machine Interfaces; Practical Aspects of Wolfgang Herbordt Book 2005 Springer-Verlag Berlin Heidelberg 2005 Acous

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Wolfgang Herbordtthe familiar Gauss–Weierstrass singular convolution integral. In the present chapter we sketch the history of this approximation operator during the past 70 years by presenting known results on the operator and its various extensions and variants. The first part after the introduction is dedicated t

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7 Efficient Real-Time Realization of an Acoustic Human/Machine Front-End,olution for practical audio signal acquisition systems using a robust generalized sidelobe canceller with spatio-temporal co nstraints. Various techniques for combining the RGSC with multi-channel acoustic echo cancellation as a complementary speech enhancement technique for full-duplex applications were analyzed.

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2 Space-Time Signals,aim of multi-channel sound capture is to exploit the structure of propagating waves, i.e., spatial and temporal properties in order to better meet the requirements of speech enhancement. The received signals are thus deterministic functions of position and of time, and, therefore, are called . or ..

Patrimony

4 Optimum Beamforming for Wideband Non-stationary Signals,istinct spatial locations. The sensors transduce propagating waves into signals describing both a finite spatial and a temporal aperture. In accordance with temporal sampling which leads to the discrete time domain, spatial sampling by sensor arrays forms the discrete space domain. Thus, with sensor

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7 Efficient Real-Time Realization of an Acoustic Human/Machine Front-End,s of limited dimension. The main difficulties for realizing adaptive datadependent optimum beamforming were studied, which resulted in an attractive solution for practical audio signal acquisition systems using a robust generalized sidelobe canceller with spatio-temporal co nstraints. Various techni

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