12-4 広帯域音響信号用低域予測型サブバンド符号化装置の開発

井上 友幸; 菅並 秀樹; 渡辺 馨; 小泉 悟; 梅田 哲夫; 竹ケ原 俊幸

doi:10.11485/tvac.28.0_231

DOI https://doi.org/10.11485/tvac.28.0_231

Conference information

Development of low bit-rate coding system for high-quality audio signal

Tomoyuki INOUE, Hideki SUGANAMI, Kaoru WATANABE, Satoru KOIZUMI, Tetuo UMEDA, Tosiyuki TAKEGAHARA

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CONFERENCE PROCEEDINGS FREE ACCESS

Pages 231-232

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Abstract

A new low bit-rate coding system has been developed for high-quality audio signal using sub-band coding with ADPCM in low frequency. Auditory characteristics of human ear is applied to this system for bit reduction. Total bit-rate is 96 or 128kbps/channel for emission and 120kbps/channel for distribution. The hardware consists of 32-bit floating-point Digital Signal Processors (TMS320C30). This system has been proposed to CCIR TG10/2.

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