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Convention Paper

Signal-Adapted Wavelet for Pitch Detection of Musical Signals

Authors: Huang, Dong-Yan

AES Convention 110 · Paper 5326 · May 2001

Abstract

This paper presents a novel approach for pitch detection of musical sound signals using the signal-adapted wavelet transform (WT). As the effectiveness of the wavelet transform for a particular application depends on the choice of the wavelet function, a wavelet function derived from the input power spectral density (PSD) is designed to concentrate the signal energy in the low-frequency region. Based on the corresponding wavelet transform, a time-based event detection method is proposed to extract the pitch periods information from the wavelet coefficients. Because the wavelet is signal-adapted and presents the characteristics of the signal, the pitch detector is suitable for sound signals having a range from 50 to 4000 Hz of the fundamental frequency values. The simulation results and real music experiments demonstrate that the main features of this method are better accuracy than the different methods for pitch period estimation and robustness to noise.

Details

Published in
AES Convention 110
AES Convention
110
Paper number
5326
Publication date
May 6, 2001
Session subject
Analysis and Synthesis of Sound
Affiliation
Institute of Microelectronics, Singapore (See document for exact affiliation information.)
Type
Convention Paper