AES E-Library

Audible Noise Suppression with a Real-Time Broad-Band Superdirective Microphone Array

A novel audible noise suppression (ANS) multichannel processor is proposed and implemented for real-time processing of data from a 15-microphone nested linear array. The ANS processor, based on the masking properties of the human auditory system, has been used successfully in single-channel systems. An enhanced multichannel version has now been developed, taking advantage of the extra information available in the acoustic spatial samples from the microphone array. This is used to improve the clean speech signal estimates used to calculate dynamically the noise hearing thresholds for ANS filtering, which will benefit the perceived and objective quality of the processed signal. While off-line experiments with a multichannel recorded database under different noise and reverberation conditions have previously assessed the performance of the system, several on-line experiments assessing the real-time prototype are described.

Authors: Sanchez-bote, Jose-luis; Gonzalez-rodriguez, Joaquin; Ortega-garcia, Javier
Affiliation: Universidad Politécnica de Madrid, Madrid, Spain
JAES Volume 53 Issue 5 pp. 403-418; May 2005 Import into BibTeX

Click to purchase paper or login as an AES member. If your company or school subscribes to the AES Journal then you can look for this paper in the institutional version of the Online Journal. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD JAES53)   /jaes53/5/pg403.pdf

Start a discussion about this paper!