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Monaural Musical Sound Separation Based on Pitch and Common Amplitude Modulation
| Citations: | 20 - 1 self |
BibTeX
@MISC{Li_monauralmusical,
author = {Yipeng Li and John Woodruff and Student Member and Deliang Wang},
title = {Monaural Musical Sound Separation Based on Pitch and Common Amplitude Modulation},
year = {}
}
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Abstract
Abstract—Monaural musical sound separation has been extensively studied recently. An important problem in separation of pitched musical sounds is the estimation of time–frequency regions where harmonics overlap. In this paper, we propose a sinusoidal modeling-based separation system that can effectively resolve overlapping harmonics. Our strategy is based on the observations that harmonics of the same source have correlated amplitude envelopes and that the change in phase of a harmonic is related to the instrument’s pitch. We use these two observations in a least squares estimation framework for separation of overlapping harmonics. The system directly distributes mixture energy for harmonics that are unobstructed by other sources. Quantitative evaluation of the proposed system is shown when ground truth pitch information is available, when rough pitch estimates are provided in the form of a MIDI score, and finally, when a multipitch tracking algorithm is used. We also introduce a technique to improve the accuracy of rough pitch estimates. Results show that the proposed system significantly outperforms related monaural musical sound separation systems. Index Terms—Common amplitude modulation (CAM), musical sound separation, sinusoidal modeling, time–frequency masking, underdetermined sound separation. I.
Keyphrases
common amplitude modulation monaural musical sound separation rough pitch estimate index term common amplitude modulation pitched musical sound instrument pitch mixture energy important problem sinusoidal modeling quantitative evaluation midi score underdetermined sound separation time frequency region time frequency masking abstract monaural musical sound separation musical sound separation least square proposed system amplitude envelope sinusoidal modeling-based separation system pitch information
