Title

Noncausal ARMA Modeling of Voiced Speech

Document Type

Article

Date of Original Version

1-1-1989

Abstract

A noncausal ARMA source-filter model of voiced speech is proposed. Although the human speech-production mechanism is obviously causal, a noncausal model allows the simple source-filter approach to Incorporate different parameters for the open-glottis and closed-glottis portions of the pitch period (without explicit determination of tint open- and closed-glottis regions). The noncausal impulse response to be modeled is obtained by standard cepstral deconvolution. Separate ARMA models are then found for the causal and anticausal portions of the impulse response. Initial experiments show that very close approximations to the speech waveform and spectrum are produced by two 12th-order ARMA models. © 1989 IEEE

Publication Title

IEEE Transactions on Acoustics, Speech, and Signal Processing

Volume

37

Issue

10

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