Generalized Coherence-based Signal Enhancement

Löllmann H, Brendel A, Kellermann W (2020)

Publication Language: English

Publication Type: Conference contribution, Conference Contribution

Publication year: 2020

Pages Range: 201-205

Event location: Barcelona ES

ISBN: 978-1-5090-6631-5

DOI: 10.1109/ICASSP40776.2020.9054470

Abstract

This contribution presents a novel approach for coherence-based signal enhancement. An estimator for the coherent-to-diffuse ratio (CDR) is devised, which exploits the concept of generalized magnitude coherence and thus, unlike common state-of-the-art schemes, can simultaneously take advantage of more than two microphones. Moreover, the speech enhancement by CDR-based spectral weighting is not performed as a post-filtering step, but by enhancing the most appropriate microphone signal. This signal is implicitly determined as part of the CDR estimation such that the presented technique does not depend on an estimation of the direction-of-arrival (DOA) or similar side-information about the desired source. The application of the new approach to binaural hearings aids shows that it achieves a consistently better speech enhancement performance than comparable state-of-the-art approaches.

Authors with CRIS profile

Heinrich Löllmann Professur für Signalverarbeitung Andreas Brendel Professur für Signalverarbeitung Walter Kellermann Professur für Signalverarbeitung

How to cite

APA:

Löllmann, H., Brendel, A., & Kellermann, W. (2020). Generalized Coherence-based Signal Enhancement. In Proceedings of the Internationl Conference on Acoustics, Speech, and Signal Processing (ICASSP) (pp. 201-205). Barcelona, ES.

MLA:

Löllmann, Heinrich, Andreas Brendel, and Walter Kellermann. "Generalized Coherence-based Signal Enhancement." Proceedings of the Internationl Conference on Acoustics, Speech, and Signal Processing (ICASSP), Barcelona 2020. 201-205.

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