Karim Helwani's Adaptive Identification of Acoustic Multichannel Systems PDF

By Karim Helwani

This e-book treats the subject of extending the adaptive filtering thought within the context of huge multichannel platforms via considering a priori wisdom of the underlying process or sign. the place to begin is exploiting the sparseness in acoustic multichannel process with a purpose to resolve 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 basic sparse representations of acoustic MIMO systems in sign or procedure established rework domains. Efficient adaptive filtering algorithms in the rework domain names are awarded and the relation among the sign- and the system-based sparse representations is emphasised. additionally, the publication offers a singular method of spatially preprocess the loudspeaker indications in a full-duplex verbal exchange approach. the belief of the preprocessing is to avoid the echoes from being captured via the microphone array with a purpose to aid the AEC method. The preprocessing level is given as an exemplarily application of a unique 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 style, it extracts the near-end sign from the microphone sign with a distortionless constraint and with no requiring a double-talk detector.

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Adaptive Identification of Acoustic Multichannel Systems Using Sparse Representations (T-Labs Series in Telecommunication Services) by Karim Helwani

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