Assessment of time frequency warping for use as a reference degradation for assessing synthetic speech


At present there is no standard assessment method for rating and comparing the quality of synthesized speech. This study assesses the suitability of Time Frequency Warping (TFW) modulation for use as a reference device for assessing synthesized speech. Time Frequency Warping modulation introduces timing errors into natural speech that produce perceptual errors similar to those found in synthetic speech. It is proposed that TFW modulation used in conjunction with a listening effort test would provide a standard assessment method for rating the quality of synthesized speech. This study identifies the most suitable TFW modulation variable parameter to be used for assessing synthetic speech and assess the results of several assessment tests that rate examples of synthesized speech in terms of the TFW variable parameter and listening effort. The study also attempts to identify the attributes of speech that differentiate synthetic, TFW modulated and natural speech.

Divisions: College of Engineering & Physical Sciences > School of Engineering and Technology > Mechanical, Biomedical & Design
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Institution: Aston University
Uncontrolled Keywords: time frequency warping modulationreference degradation,standard degradation,attributes of synthesized speech,perceptual space,perceptual processing
Last Modified: 28 Jun 2024 07:35
Date Deposited: 13 Sep 2011 07:49
Completed Date: 1992-11
Authors: Burrell, M.D.


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