Opens in a new tab

AES E-Library

← Back to search

Convention Paper

Non-Linear Spectral Subtraction with Combined Smoothing Strategies for Broadband Noise Reduction

Authors: Hoeldrich, Robert; Lorber, Markus

AES Convention 103 · Paper 4611 · September 1997

Abstract

A broadband noise reduction method based on non-linear spectral subtraction is proposed. To prevent processing distortions in form of musical noise, over-subtraction is applied to the degraded signal spectrum. Furthermore, time-averaging is used to reduce the variance of the estimated signal-to-noise ratio (SNR). A masking threshold obtained by spectral smoothing leads to further reduction of audible processing distortions.

Details

Published in
AES Convention 103
AES Convention
103
Paper number
4611
Publication date
September 6, 1997
Session subject
Sound Restoration and Archiving
Affiliation
Institute of Elcctronic Music Cyraz, Graz, Austria (See document for exact affiliation information.)
Type
Convention Paper