Time-frequency voiced and unvoiced excitation models for harmonic speech systems
نویسندگان
چکیده
منابع مشابه
Analysis of Voiced Speech using Harmonic Models
It is very common to consider voiced speech as a periodic or quasi-periodic signal. Therefore, harmonic models are usually proposed for the modeling of this kind of speech. This paper focuses on the harmonic analysis of speech. Three models are presented and compared. The rst model is the simplest among the three models supposing that the speech signal is a stationary signal. The second model d...
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The speech production can be modeled by linear and nonlinear systems. In this contribution a time variable nonlinear Volterra system is used to model the fluctuations of the voiced excitation while a linear system models the resonances of the speech production system. The estimation of the Volterra system is performed by a prediction algorithm. This is enabled by a description of the prediction...
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The aim of this study is to evaluate how far the nonlinear symbolic dynamics approach helps to characterize the nonlinear properties of speech and thereby discriminate between voiced and unvoiced speech segments. The symbolic dynamics calculations were performed on voiced speech, unvoiced speech and silence data. Differences were found in histogram properties and complexity measures of symbol s...
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In general, speech synthesis using the source-filter model of speech production requires the classification of speech into two classes (voiced and unvoiced) which is prone to errors. For voiced speech, the input of the synthesis filter is an approximately periodic excitation, whereas it is a noise signal for unvoiced. This paper proposes an excitation model which can be used to synthesise both ...
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We present an algorithm for automatically classifying speech into four categories: silent and speech produced by three types of excitation, namely, voiced, unvoiced, and mixed (a combination of voiced and unvoiced). The algorithm uses two-channel (speech and electroglottogram) signal analysis and has been tested on data from six speakers (three male and three female), each speaking five sentenc...
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ژورنال
عنوان ژورنال: Journal of Communication and Information Systems
سال: 2014
ISSN: 1980-6604
DOI: 10.14209/jcis.2014.6