A technique for separating harmonic sound sources using FIR comb filters is presented. First, a pre-processing task is performed by a multipitch estimator to detect the pitches that the signal is composed of. Then, a method based on the Short Time Fourier Transform (STFT) is utilized to iteratively extract the harmonics belonging to a given source by using FIR comb filters. The presented approach improves upon existing sinusoidal model approaches in terms of the perceptual quality of the extracted signal.

Authors: Coyle, Eugene; Gainza, Mikel; Lawlor, Bob
Affiliations: Dublin Institute of Technology, Dublin, Ireland ; National University of Ireland, Maynooth, Ireland(See document for exact affiliation information.)
AES Convention: 117 (October 2004) Paper Number: 6312
Publication Date: October 1, 2004
Subject: Signal Processing

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