This speech coder achieves good quality of speech and the DRT score is 88.55.

该算法可以提供良好的合成语音质量，DRT测试结果达到88.55分。

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First the paper studies the algorithms of AMR speech coder. The AMR speech coder consists of the multi-rate speech coder, a source controlled rate scheme, and an error concealment mechanism.

本文首先研究了AMR声码器的算法，AMR声码器主要由多速率语音编码器、源控速率方案和错误消除机制三大部分组成。

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The Low-Delay Code-Exited Linear Predictive (LD-CELP) Speech Coder can combine high quality with low delay at quite low bit rates.

低时延码激励线性预测(LD - CELP)语音编码能够在较低速率把高质量与低时延结合起来。

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The Low-Delay Code-Exited Linear Predictive (LD-CELP) Speech Coder can combine high quality with low delay at quite low bit rates.

低时延码激励线性预测(LD - CELP)语音编码能够在较低速率把高质量与低时延结合起来。

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