Estimation of the Reverberation Time in Noisy Environments

Löllmann H (2008)


Publication Language: English

Publication Type: Conference contribution, Conference Contribution

Publication year: 2008

Event location: Seattle US

Open Access Link: http://www.iwaenc.org/proceedings/2008/start.html

Abstract

This contribution presents a novel approach to determine the reverberation time (RT) from noisy observations by using a maximum likelihood (ML) estimator. It is based on a statistical model for the sound decay in reverberant enclosures which takes additive noise into account. Two estimation methods are presented. The first one considers dedicated excitation signals such as switched-off noise sources or impulsive tone-bursts. The derived ML estimator allows to determine the RT from the received signal even in the presence of background or measurement noise and achieves a significantly higher estimation accuracy than comparable approaches.

The second approach allows to estimate the RT from reverberant and noisy speech signals without a priori knowledge. This blind estimation achieves an estimation accuracy which enable its use for speech enhancement algorithms which suppress the effects of background noise and late reverberation.

Authors with CRIS profile

How to cite

APA:

Löllmann, H. (2008). Estimation of the Reverberation Time in Noisy Environments. In Proceedings of the International Workshop on Acoustic Echo and Noise Control (IWAENC). Seattle, US.

MLA:

Löllmann, Heinrich. "Estimation of the Reverberation Time in Noisy Environments." Proceedings of the International Workshop on Acoustic Echo and Noise Control (IWAENC), Seattle 2008.

BibTeX: Download