一种4.8 kbps的音调同步DFT语音编码

军事通信技术 Pub Date : 1988-10-23 DOI:10.1109/MILCOM.1988.13368

K. Okazaki, A. Sasama, S. Unagami

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引用次数: 2

摘要

作者提出了一种基于节距同步离散傅立叶变换(DFT)的4.8 kbps语音编码算法。该算法将时间尺度压缩与基音同步DFT频谱编码相结合。该算法还抛弃了时间压缩信号相位信息和非谐波频谱分量，减少了信息处理的工作量。仿真结果表明，该方法的重放音质良好。处理延迟约80毫秒，不包括操作时间。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A 4.8 kbps voice coding using pitch synchronous DFT

The authors propose a 4.8-kbps voice-coding algorithm using pitch-synchronous discrete Fourier transform (DFT). This algorithm combines time-scale compression with pitch-synchronous DFT spectrum coding. It also discards the time-compressed signal-phase information and the nonharmonic spectral components to reduce the amount of information processes. Simulation results show that the reproduced sound quality is good. Processing delay is about 80 ms, without including operation time.<>

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军事通信技术

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发文量

2434