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Convention Paper

A Method for Enhancement of Background Sounds in Forensic Audio Recordings

Authors: Maher, Robert C.

AES Convention 133 · Paper 8731 · October 2012

Abstract

A method for suppressing speech while retaining background sound is presented in this paper. The procedure is useful for audio forensics investigations in which a strong foreground sound source or conversation obscures subtle background sounds or utterances that may be important to the investigation. The procedure uses a sinusoidal speech model to represent the strong foreground signal and then performs a synchronous subtraction to isolate the background sounds that are not well-modeled as part of the speech signal, thereby enhancing the audibility of the background material.

Details

Published in
AES Convention 133
AES Convention
133
Paper number
8731
Publication date
October 6, 2012
Session subject
Emerging Audio Technologies
Affiliation
Montana State University, Bozeman, MT, USA (See document for exact affiliation information.)
Type
Convention Paper