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An Algorithm for Extraction of Speech Spectral Envelope Using Piecewise Linear Predictive Coding

Wan Mao-wen

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Abstract

In speech analysis, it′s very important for the extraction of speech spectral envelope. An algorithm is presented using piecewise LPC(Linear Predictive Coding). The theory of filter banks is used as well as LPC. The spectral coverage of speech is divided, and then LPC is applied to different spectral bands. Experiments suggest that the resolving capability of synthetic spectra is improved.

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What this paper is about

In speech analysis, it′s very important for the extraction of speech spectral envelope. An algorithm is presented using piecewise LPC(Linear Predictive Coding). The theory of filter banks is used as well as LPC. The spectral coverage of speech is divided, and then LPC is applied to different spectral bands. Experiments suggest that the resolving capability of synthetic spectra is improved.

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Available abstract

In speech analysis, it′s very important for the extraction of speech spectral envelope. An algorithm is presented using piecewise LPC(Linear Predictive Coding). The theory of filter banks is used as well as LPC. The spectral coverage of speech is divided, and then LPC is applied to different spectral bands. Experiments suggest that the resolving capability of synthetic spectra is improved.

Key concepts: Linear predictive coding, Spectral envelope, Speech coding, Predictive coding, Linear prediction, Speech recognition, Envelope (radar), Coding (social sciences)

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