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General Information
Prof. Wael Badawy
Department of Computing and Information Systems Umm Al Qura University, Canada
I'm happy to take on the position of editor in chief of IJCTE. We encourage authors to submit papers concerning any branch of computer theory and engineering.
IJCTE 2010 Vol.2(4): 523-531 ISSN: 1793-8201
DOI: 10.7763/IJCTE.2010.V2.196

An Improved Melody Contour Feature Extraction for Query by Humming

Nattha Phiwma and Parinya Sanguansat
Abstract—In this paper, we propose a new melody contour extraction technique and new normalization methods to improve Query-by-Humming. A critical issue of humming sound is noise interference from both environment and acquisition instruments. Furthermore, most users are not professional singers therefore they cause the other query problems about variation of pitch and timing. Advantage of the proposed technique can reduce noise whereas makes pitch smoothing. Our technique consists of four steps as follows: Firstly, the melody contour is extracted from humming sound by Subharmonic-to-Harmonic Ratio (SHR).Subsequently, the melody contour is filtered and smoothed by median filter and our propose technique. Afterwards, we used various normalization methods, including our new techniques, for scaling and noise robust. Finally, humming sound and melody sequences are different alignment methods such as Dynamic Time Warping (DTW), linear interpolations and nonlinear interpolations, before classification. Our technique offers several advantages: higher accuracy, lower complexity, faster query process and lower memory. In addition, the experimental results show that our proposed technique can perform more effective than other methods.

Index Terms—Query-by-Humming; melody contour; Dynamic Time Warping; pitch; Subharmonic-to-Harmonic Ratio

Nattha Phiwma and Parinya Sanguansat are with the department of Information Technology Rangsit University, Pathumthani, Thailand (email:phewma@hotmail.com, sanguansat@yahoo.com).


Cite: Nattha Phiwma and Parinya Sanguansat, "An Improved Melody Contour Feature Extraction for Query by Humming," International Journal of Computer Theory and Engineering vol. 2, no. 4, pp. 523-531, 2010.

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