Abstract
We propose a novel Power Spectral Density (PSD) estimator for multi-microphone systems operating in reverberant and noisy conditions. The estimator is derived using the maximum likelihood approach and is based on a blocked and pre-whitened additive signal model. The intended application of the estimator is in speech enhancement algorithms, such as the Multi-channel Wiener Filter (MWF) and the Minimum Variance Distortionless Response
(MVDR) beamformer. We evaluate these two algorithms in a speech dereverberation task and compare the performance obtained using the proposed and a competing PSD estimator. Instrumental performance measures indicate an advantage of the proposed estimator over the competing one. In a speech intelligibility test all algorithms significantly improved the word intelligibility score. While the results suggest a minor advantage of using the proposed PSD estimator, the difference between algorithms was found to be statistically significant only in some of the experimental conditions.
(MVDR) beamformer. We evaluate these two algorithms in a speech dereverberation task and compare the performance obtained using the proposed and a competing PSD estimator. Instrumental performance measures indicate an advantage of the proposed estimator over the competing one. In a speech intelligibility test all algorithms significantly improved the word intelligibility score. While the results suggest a minor advantage of using the proposed PSD estimator, the difference between algorithms was found to be statistically significant only in some of the experimental conditions.
Originalsprog | Engelsk |
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Titel | IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2016 |
Forlag | IEEE |
Publikationsdato | 25 mar. 2016 |
Sider | 599 - 603 |
ISBN (Elektronisk) | 978-1-4799-9988-0 |
DOI | |
Status | Udgivet - 25 mar. 2016 |
Begivenhed | The 41st IEEE International Conference on Acoustics, Speech and Signal Processing - Shanghai, Kina Varighed: 20 mar. 2016 → 25 mar. 2016 http://www.icassp2016.org/ |
Konference
Konference | The 41st IEEE International Conference on Acoustics, Speech and Signal Processing |
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Land/Område | Kina |
By | Shanghai |
Periode | 20/03/2016 → 25/03/2016 |
Internetadresse |