参数语音编码- hvxc在2.0-4.0 kbps

1999 IEEE Workshop on Speech Coding Proceedings. Model, Coders, and Error Criteria (Cat. No.99EX351) Pub Date : 1999-06-20 DOI:10.1109/SCFT.1999.781492

M. Nishiguchi, A. Inoue, Y. Maeda, J. Matsumoto

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引用次数: 16

摘要

介绍了MPEG-4参数化语音编码，谐波矢量激励编码(HVXC)算法。编码器的新功能包括能够生成2.0和4.0 kbps可扩展比特流的量化器方案，其中使用4.0 kbps比特流的子集可以实现2.0 kbps解码。语音的时间尺度修改也可以不改变音高或音素的快速和缓慢播放模式。听力测试表明，2.0 kbps的编码方法明显优于4.8 kbps的FS1016 CELP编码方法。1998年10月，HVXC编码器被采纳为MPEG-4标准化的最终国际标准草案(FDIS)。

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Parametric speech coding-HVXC at 2.0-4.0 kbps

MPEG-4 parametric speech coding, harmonic vector excitation coding (HVXC) algorithm, is described. New features of the coder includes a quantizer scheme capable of generating 2.0 and 4.0 kbps scalable bit-streams, where 2.0 kbps decoding is possible using a subset of 4.0 kbps bit-stream. Time scale modification of speech is also possible without changing pitch nor phoneme for fast and slow playback mode. Listening tests show that the proposed coding method at 2.0 kbps provides significantly better quality than that of FS1016 CELP at 4.8 kbps. In October 1998, the HVXC coder was adopted to the Final Draft International Standard (FDIS) of MPEG-4 standardization.

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1999 IEEE Workshop on Speech Coding Proceedings. Model, Coders, and Error Criteria (Cat. No.99EX351)

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