NDLI: Separation of harmonic sounds using multipitch analysis and iterative parameter estimation

Content Provider	IEEE Xplore Digital Library
Author	Virtanen, T. Klapuri, A.
Copyright Year	2001
Description	Author affiliation: Signal Process. Lab., Tampere Univ. of Technol., Finland (Virtanen, T.)
Abstract	A signal processing method for the separation of concurrent harmonic sounds is described. The method is based on a two-stage approach. First, a multipitch estimator is applied to find initial sound parameters which are reliable, but inaccurate and static. In a second stage, more accurate and time-varying sinusoidal parameters are estimated in an iterative procedure, which imposes certain constraints for the amplitudes and frequencies between the components of each sound. The proposed algorithm makes it possible to reconstruct separated sounds that are perceptually close to the original ones before mixing. Experimental data comprised sung vowels and 26 musical instruments. Sound separation was performed for random sound mixtures ranging from one to six simultaneous sounds. The system is able to produce meaningful results in all polyphonies, the quality of separated sounds gradually degrading along with the polyphony.
Starting Page	83
Ending Page	86
File Size	430684
Page Count	4
File Format	PDF
ISBN	0780371267
DOI	10.1109/ASPAA.2001.969548
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-10-24
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Harmonic analysis Parameter estimation Frequency estimation Amplitude estimation Acoustic signal processing Iterative methods Image analysis Humans Laboratories Signal processing algorithms
Content Type	Text
Resource Type	Article

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