PITCH PERIOD ESTIMATION METHOD USING EMPIRICAL WAVELET TRANSFORM

Authors

  • Y. N. Imamverdiyev Institute of Information Technology of Azerbaijan National Academy of Sciences, Baku, Azerbaijan, Azerbaijan
  • L. V. Sukhostat Institute of Information Technology of Azerbaijan National Academy of Sciences, Baku, Azerbaijan, Azerbaijan

DOI:

https://doi.org/10.15588/1607-3274-2015-2-6

Keywords:

pitch period, empirical wavelet transform, operator Teager-Kaiser energy operator, intrinsic mode function, instantaneous frequency.

Abstract

Pitch period evaluation of speech signal is used in many important applications of speech technology. However, among the existing
methods only some can work in case of non-linear and non-stationary signals. The main reason is that the pitch detection methods are based
on the assumption that speech production process is linear. Selection of pitch period estimation algorithm is always focuses on finding a
compromise between time and frequency resolution, robustness, computational complexity and time delay. The aim of this paper is to develop a new method for estimating the pitch period based on empirical wavelet transformation. Method of constructing a family of adapted wavelets assumes that the filters depend on the information location in speech spectrum of the analyzed signal. Empirical wavelets are defined as
bandpass filters for each segment of the speech signal. Instantaneous frequency characteristics are considered as pitch period detection features.
Teager-Kaiser energy separation operator is used for its extraction. The comparison of this method with other pitch estimation algorithms is
presented.

References

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Published

2015-01-12

How to Cite

Imamverdiyev, Y. N., & Sukhostat, L. V. (2015). PITCH PERIOD ESTIMATION METHOD USING EMPIRICAL WAVELET TRANSFORM. Radio Electronics, Computer Science, Control, (2). https://doi.org/10.15588/1607-3274-2015-2-6

Issue

No. 2 (2015): Radio Electronics, Computer Science, Control

Section

Progressive information technologies

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Copyright (c) 2015 Y. N. Imamverdiyev, L. V. Sukhostat

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