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ITU P.50:1999

ITU P.50:1999 Artificial Voices Defines the "artificial voice" which reproduces the characteristics of human speech for the purpose of characterising linear and non-linear telecommunication systems and devices intended for the trans

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Table of Contents

1Introduction
2Scope,purposeanddefinition
2.1Scopeandpurpose
2.2Definition
3Terminology
3.1Electricalartificialvoice
3.2Artificialmouthexcitationsignal
3.3Acousticartificialvoice
4Characteristics
4.1Long-termaveragespectrum
4.2Short-termspectrum
4.3Instantaneousamplitudedistribution
4.4Segmentalpowerleveldistribution
4.5Spectrumofthemodulationenvelope
4.6Timeconvergence
5Generationmethod
5.1Excitationsourcesignal
5.2Glottalexcitation
5.3Unvoicedsounds
5.4Powerenvelope
5.5Spectrumshapingfilter
6Bibliography
AnnexA-Short-termspectrumcharacteristicsof
theartificialvoice

Abstract

Defines the "artificial voice" which reproduces the characteristics of human speech for the purpose of characterising linear and non-linear telecommunication systems and devices intended for the transduction or transmission of speech. The artificial voice is a mathematically defined signal that reproduces the time and spectral characteristics of speech which significantly effect the performance of telecommunication systems. Two types of artificial voice are specified, reproducing respectively the characteristics of female and male speech.

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