Coding of LSP Parameters Using Interframe Moving Average Prediction and Multi-Stage Vector Quantization

H. Ohmuro; Takehiro Moriya; Kazunori Mano; Satoshi Miki

doi:10.1109/SCFT.1993.762340

Coding of LSP Parameters Using Interframe Moving Average Prediction and Multi-Stage Vector Quantization

H. Ohmuro, Takehiro Moriya, Kazunori Mano, Satoshi Miki

Research output: Contribution to conference › Paper › peer-review

19 Citations (Scopus)

Abstract

This paper proposes a new efficient line spectrum pair (LSP) vector quantization method which uses moving average (MA) interframe prediction of the parameters. This method has two advantages over auto-regressive prediction: the degradation of decoded parameters caused by bit errors affects only a few of the following frames, and codeword decoding can start at any frame. Using MA prediction, the final reconstructed LSP vector (quantized vector) of the current frame is represented as a linear combination of current and previous frame code vectors. In this paper we describe ways to achieve a more efficient LSP coder when each frame has four 10-ms subfraines. The spectral distance obtained by this method at 30 bits per 40 ms is better than that obtained using conventional multi-stage VQ without interframe correlation at 40 bits per 40 ms.

Original language	English
Pages	63-64
Number of pages	2
DOIs	https://doi.org/10.1109/SCFT.1993.762340
Publication status	Published - 1993 Jan 1
Externally published	Yes
Event	1993 IEEE Workshop on Speech Coding for Telecommunications: Speech Coding for the Network of the Future, SCFT 1993 - Sainte-Adele, Canada Duration: 1993 Oct 13 → 1993 Oct 15

Conference

Conference	1993 IEEE Workshop on Speech Coding for Telecommunications: Speech Coding for the Network of the Future, SCFT 1993
Country/Territory	Canada
City	Sainte-Adele
Period	93/10/13 → 93/10/15

ASJC Scopus subject areas

Signal Processing
Software
Communication
Computer Networks and Communications

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10.1109/SCFT.1993.762340

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Coding of LSP Parameters Using Interframe Moving Average Prediction and Multi-Stage Vector Quantization. / Ohmuro, H.; Moriya, Takehiro; Mano, Kazunori; Miki, Satoshi.

1993. 63-64 Paper presented at 1993 IEEE Workshop on Speech Coding for Telecommunications: Speech Coding for the Network of the Future, SCFT 1993, Sainte-Adele, Canada.

Research output: Contribution to conference › Paper › peer-review

Ohmuro, H, Moriya, T, Mano, K & Miki, S 1993, 'Coding of LSP Parameters Using Interframe Moving Average Prediction and Multi-Stage Vector Quantization', Paper presented at 1993 IEEE Workshop on Speech Coding for Telecommunications: Speech Coding for the Network of the Future, SCFT 1993, Sainte-Adele, Canada, 93/10/13 - 93/10/15 pp. 63-64. https://doi.org/10.1109/SCFT.1993.762340

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AB - This paper proposes a new efficient line spectrum pair (LSP) vector quantization method which uses moving average (MA) interframe prediction of the parameters. This method has two advantages over auto-regressive prediction: the degradation of decoded parameters caused by bit errors affects only a few of the following frames, and codeword decoding can start at any frame. Using MA prediction, the final reconstructed LSP vector (quantized vector) of the current frame is represented as a linear combination of current and previous frame code vectors. In this paper we describe ways to achieve a more efficient LSP coder when each frame has four 10-ms subfraines. The spectral distance obtained by this method at 30 bits per 40 ms is better than that obtained using conventional multi-stage VQ without interframe correlation at 40 bits per 40 ms.

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Coding of LSP Parameters Using Interframe Moving Average Prediction and Multi-Stage Vector Quantization

Abstract

Conference

ASJC Scopus subject areas

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