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Convention Paper

Effect of Reverberation on Overtone Correlations in Speech and Music

Authors: Smith, Sarah R.; Bocko, Mark F.

AES Convention 139 · Paper 9404 · October 2015

Abstract

This paper explores the effect of reverberation on audio signals that possess a harmonically rich overtone spectrum such as speech and many musical instrument sounds. A proposed metric characterizes the degree of reverberation based upon the cross correlation of the instantaneous frequency tracks of the signal overtones. It is found that sounds that exhibit near perfect correlations in an anechoic acoustic environment become less correlated when passed through a reverberant channel. These results are demonstrated for a variety of music and speech tones using both natural recordings and synthetic reverberation. The proposed metric corresponds to the speech transmission index and thus may be employed as a quantitative measure of the amount of reverberation in a recording.

Details

Published in
AES Convention 139
AES Convention
139
Paper number
9404
Publication date
October 6, 2015
Session subject
Signal Processing
Affiliation
University of Rochester, Rochester, NY, USA (See document for exact affiliation information.)
Type
Convention Paper