Efficient Speech Dereverberation for Binaural Hearing Aids

Konferenz: Sprachkommunikation - Beiträge zur 10. ITG-Fachtagung
26.09.2012 - 28.09.2012 in Braunschweig, Deutschland

Tagungsband: Sprachkommunikation

Seiten: 4Sprache: EnglischTyp: PDF

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Löllmann, Heinrich W.; Vary, Peter (Institute of Communication Systems and Data Processing, RWTH Aachen University, 52056 Aachen, Germany)

An efficient two-stage algorithm for binaural cue preserving speech dereverberation by spectral weighting is presented. The first stage reduces late reverberant speech components where the second stage aims at a suppression of non-coherent early and remaining late reverberant speech components. The proposed system is based on the binaural speech dereverberation algorithm of Jeub et al. [3]. In contrast to that contribution, the realization of the needed delayand- sum beamformer and the blind estimation of reverberation time and time-difference-of-arrivalwith low complexity and low delay is tackled. In addition, the problem of a decreased signal energy for the enhanced signal due to spectral weighting is addressed by an efficient approach.