Designing the Wiener post-filter for diffuse noise suppression using imaginary parts of inter-channel cross-spectra - Inria - Institut national de recherche en sciences et technologies du numérique Access content directly
Conference Papers Year : 2010

Designing the Wiener post-filter for diffuse noise suppression using imaginary parts of inter-channel cross-spectra

Abstract

This paper describes a new design of the Wiener post-filter for diffuse noise suppression. The Wiener post-filter is well-known as an effective post-processing of the minimum variance distortionless response beamformer, and its output is the optimal estimate of the target signal in the sense of the minimum mean square error. It is essential to accurately estimate the target power spectrum from the observed signals contaminated by noise when designing the Wiener post-filter. In our method, it is estimated from the imaginary parts of the inter-channel observation cross-spectra, under the assumption that the inter-channel noise cross-spectra are real-valued. The post-filter is designed using the estimate and this design is shown to be effective even for a small-sized array through experiments using simulated and real environmental noise.
Fichier principal
Vignette du fichier
ito_ICASSP10.pdf (565.91 Ko) Télécharger le fichier
Origin : Publisher files allowed on an open archive
Loading...

Dates and versions

inria-00544104 , version 1 (07-12-2010)

Identifiers

  • HAL Id : inria-00544104 , version 1

Cite

Nobutaka Ito, Nobutaka Ono, Emmanuel Vincent, Shigeki Sagayama. Designing the Wiener post-filter for diffuse noise suppression using imaginary parts of inter-channel cross-spectra. 2010 IEEE Int. Conf. on Acoustics, Speech and Signal Processing (ICASSP), Mar 2010, Dallas, United States. pp.2818--2821. ⟨inria-00544104⟩
253 View
955 Download

Share

Gmail Facebook X LinkedIn More