Suppression of Musical Noise Artifacts in Audio Noise Reduction by Adaptive 2D Filtering

TitleSuppression of Musical Noise Artifacts in Audio Noise Reduction by Adaptive 2D Filtering
Publication TypeConference Paper
Year of Publication2007
AuthorsLukin A, Todd J
Conference NameAudio Engineering Society Convention
Publication LanguageEnglish
Abstract

Spectral attenuation algorithms for audio noise reduction often generate annoying musical noise artifacts. Most existing methods for suppression of musical noise employ a combination of instantaneous and time-smoothed spectral estimates for calculation of spectral gains. In this paper a 2-D approach to the filtering of a time-frequency spectrum is proposed, based on a recently developed non-local means image denoising algorithm. The proposed algorithm demonstrates efficient reduction of musical noise without creating “noise echoes” inherent in time-smoothing methods.

Citation Key266