1·A vocoder is software that digitizes speech, transforms it into information packets so it can be electronically transmitted, and decodes it at the receiver so that it can be heard as speech.
声码器是一种数字化语音软件，将演讲语音转变成信息包，因此它可以以电子方式传送，并在接收端进行解码，以便它可以被人听到。
2·This paper describes a DSP system which based on multi-band excitation voice compression coding algorithm - multi-rate vocoder.
论文设计了一个基于多带激励语音压缩编码算法的DSP系统-多速率声码器。
3·When LPC vocoder exactly extracts vocal tract parameters, whether an excitation model is good of not will severoly affect the quality of the synthetic speech.
LPC 声码器在准确提取声道参数的情况下，激励模型的优劣直接影响着综合语音的质量。