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Convention Paper

Determination and Correction of Individual Channel Time Offsets for Signals Involved in an Audio Mixture

Authors: Perez Gonzalez, Enrique; Reiss, Joshua

AES Convention 125 · Paper 7631 · October 2008

Abstract

A method for reducing comb-filtering effects due to delay time differences between audio signals in a sound mixer has been implemented. The method uses a multi-channel cross-adaptive effect topology to automatically determine the minimal delay and polarity contributions required to optimize the sound mixture. The system uses real time, time domain transfer function measurements to determine and correct the individual channel offset for every signal involved in the audio mixture. The method has applications in live and recorded audio mixing where recording a single sound source with more than one signal path is required, for example when recording a piano with multiple microphones. Results are reported which determine the effectiveness of the proposed method.

Details

Published in
AES Convention 125
AES Convention
125
Paper number
7631
Publication date
October 6, 2008
Session subject
Audio DSP
Affiliation
Queen Mary University of London (See document for exact affiliation information.)
Type
Convention Paper