KURTOSIS AND NORMALIZED VARIANCE AS MEASURES OF SPEECH SIGNALS CLIPPING VALUE

Authors

  • A. М. Prodeus National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”
  • I. V. Kotvytskyi National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”
  • M. V. Didkovska National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”
  • K. A. Kukharicheva National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”

DOI:

https://doi.org/10.18372/1990-5548.62.14378

Keywords:

Сlipped speech, speech quality, clipping value, kurtosis, normalized variance, matching map

Abstract

It is shown that the kurtosis and the normalized variance can be used as a measures of the clipping value of speech signals. The use of the proposed measures makes it possible to significantly simplify and speed up the clipping value calculations compare to the methods where preliminarily estimation of the probability density function of the analyzed speech signal is required. Subjective estimates of the clipped speech signals quality were obtained. Matching maps between the proposed objective measures and the subjective estimates of the clipped speech signals quality have been built. It was shown that the maps can be well approximated by polynomials of small (1st–4th) order. This fact indicates the possibility of construction of simple, in computational sense, algorithms for the control of clipped speech signals quality.

Author Biographies

A. М. Prodeus, National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”

Acoustics and Electroacoustics Department

Doctor of Engineering Science. Professor

orcid.org/0000-0001-7640-0850

I. V. Kotvytskyi, National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”

Acoustics and Electroacoustics Department

Postgraduate student

M. V. Didkovska, National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”

Department of Mathematical Methods of System Analysis

Candidate of Science (Engineering). Associate Professor

K. A. Kukharicheva, National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”

Acoustics and Electroacoustics Department

Postgraduate student

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Issue

Vol. 4 No. 62 (2019)

Section

THEORY AND METHODS OF SIGNAL PROCESSING

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