Download PDF by Karim Helwani: Adaptive Identification of Acoustic Multichannel Systems

By Karim Helwani

This ebook treats the subject of extending the adaptive filtering conception within the context of big multichannel platforms through bearing in mind a priori wisdom of the underlying process or sign. the start line is exploiting the sparseness in acoustic multichannel method so as to clear up the non-uniqueness challenge with a good set of rules for adaptive filtering that doesn't require any amendment of the loudspeaker signals.
The e-book discusses intimately the derivation of normal sparse representations of acoustic MIMO systems in sign or method based rework domains. Efficient adaptive filtering algorithms in the remodel domain names are offered and the relation among the sign- and the system-based sparse representations is emphasised. in addition, the e-book offers a singular method of spatially preprocess the loudspeaker signs in a full-duplex conversation approach. the assumption of the preprocessing is to avoid the echoes from being captured via the microphone array in an effort to help the AEC procedure. The preprocessing degree is given as an exemplarily application of a singular unified framework for the synthesis of sound figures. Finally, a multichannel approach for the acoustic echo suppression is presented that can be utilized as a postprocessing level for elimination residual echoes. As first of its variety, it extracts the near-end sign from the microphone sign with a distortionless constraint and with out requiring a double-talk detector.

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