[1] Wu Hongwei, Wu Zhenyang, Zhao Li, et al. Improved mean-shift-based pitch determination [J]. Journal of Southeast University (English Edition), 2007, 23 (4): 494-499. [doi:10.3969/j.issn.1003-7985.2007.04.004]

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

23

Issue:

2007 4

Page:

494-499

Research Field:

Information and Communication Engineering

Publishing date:

2007-12-30

Info

Title:

Improved mean-shift-based pitch determination

Author(s):

Wu Hongwei¹;  2;  Wu Zhenyang¹;  Zhao Li¹

¹ School of Information Science and Engineering, Southeast University, Nanjing 210096, China
² School of Electronics and Information, Suzhou University, Suzhou 215021, China

Keywords:

pitch;  pitch determination;  mean shift algorithm

PACS:

TN912.3

DOI:

10.3969/j.issn.1003-7985.2007.04.004

Abstract:

The underlying principle of pitch determination based on the mean shift algorithm is studied, and the cause of pitch error propagation in the original pseudo code is analyzed.The problem of error propagation is solved by choosing an appropriate initial pitch candidate F₀₀.The theoretical choice guideline in a pitch epoch is obtained as ensuring the true pitch F₀ satisfying F_00/002<F_0<03F_00/002.The validity of the choice guideline is verified by the F₀₀00 experiment.Meanwhile, the algorithm is extended to the pitch determination in the noisy case and compared with the method of subharmonic-to-harmonic ratio(SHR).The experimental results show that the improved algorithm bears comparison with SHR and it runs much faster than SHR.

References:

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[12] Comaniciu D, Meer P.Mean shift:a robust approach toward feature space analysis [J].IEEE Trans Pattern Analysis and Machine Intelligence, 2002, 24(5):603-619.

Memo

Memo:

Biographies: Wu Hongwei(1967—), female, graduate;Wu Zhenyang(corresponding author), male, professor, zhenyang@seu.edu.cn.

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