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Combination of adaptive filtering and spectral subtraction for noise removal

Authors: Rafael Martínez 0001; Agustín Álvarez-Marquina; Pedro Gómez 0001; Victor Nieto Lluis; Victoria Rodellar;

Combination of adaptive filtering and spectral subtraction for noise removal

Abstract

Adaptive noise cancelling and spectral subtraction are well-known methods for removing noise from a noise-corrupted speech. The scheme proposed in this paper combines both techniques in order to obtain large gains in the SNR at a reasonable low computational cost, The architecture of the canceller is based on a two-microphone scheme (noisy speech microphone or primary and environment noise microphone or reference). There are two main blocks to be considered: an adaptive lattice-ladder filter (ALLF) with an associated control automaton and a speech segmentation unit, and a two-channel spectral subtractor working with the residual signals from the ALLF.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
1
Average
Average
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