抄録
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.
本文言語 | English |
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ページ | 63-64 |
ページ数 | 2 |
DOI | |
出版ステータス | Published - 1993 1月 1 |
外部発表 | はい |
イベント | 1993 IEEE Workshop on Speech Coding for Telecommunications: Speech Coding for the Network of the Future, SCFT 1993 - Sainte-Adele, Canada 継続期間: 1993 10月 13 → 1993 10月 15 |
Conference
Conference | 1993 IEEE Workshop on Speech Coding for Telecommunications: Speech Coding for the Network of the Future, SCFT 1993 |
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国/地域 | Canada |
City | Sainte-Adele |
Period | 93/10/13 → 93/10/15 |
ASJC Scopus subject areas
- 信号処理
- ソフトウェア
- 通信
- コンピュータ ネットワークおよび通信