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Convention Paper

Broad-Band Acoustic Noise Reduction using a Novel Frequency Depended Parametric Wiener Filter. Implementations using Filter-bank, STFT and Wavelet Analysis/Synthesis Techniques.

Authors: Dimoulas, Charalampos; Papanikolaou, George; Kalliris, George

AES Convention 110 · Paper 5382 · May 2001

Abstract

Equivalent masking noise estimation could be introduced in conventional broad-band acoustic noise reduction, to provide a new class of modified techniques. The psycho-acoustical facts exploited in this paper, result to a frequency depended parametric Wiener filter. A discussion of classical spectral subtraction, and a proof of equivalence under certain conditions to Wiener filtering, is given first. The concept of parametric Wiener filter is then examined, and a frequency dependence based on the model of pure tones masked by broad-band noise, is introduced. Filter-bank, STFT and wavelet implementations of the new approach, are finally compared to classical spectral subtraction for background noise reduction in old 78 rpm music disk recordings and noisy speech tape recordings.

Details

Published in
AES Convention 110
AES Convention
110
Paper number
5382
Publication date
May 6, 2001
Session subject
Signal Processing for Audio
Affiliation
Aristotle University of Thessaloniki, University Campus, Thessaloniki, Greece (See document for exact affiliation information.)
Type
Convention Paper