Skip to Main Content
This paper presents a subband denoising technique, called the adaptive subband Wiener filtering (ASWF), based on a critical-band gammatone filterbank. The ASWF is derived from the generalized subband Wiener filtering (SWF) equation and reduces noises according to the estimated signal-to-noise ratio (SNR) in each auditory channel and in each time frame. Design of the subband noise estimator will be presented. This critical-band denoising technique would be of interest to auditory-based speech and audio applications. Objective and subjective tests demonstrated the proposed technique can improve the perceptual quality of speeches.
Circuits and Systems, 2005. 48th Midwest Symposium on
Date of Conference: 7-10 Aug. 2005