本论文的工作分为两大部分：数字语音压缩编码和活动图像压缩编码。
The paper falls into two main parts : digital speech compress coding and moving picture compress coding .
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。
This paper describes a DSP system which based on multi-band excitation voice compression coding algorithm - multi-rate vocoder.
本文简要介绍了语音压缩编码的新进展，并且着重介绍低码率语音编码在新近几年所取得的进展。
In this paper, developments of speech compression coding are briefly introduced, and importance is attached to recent advances in speech coding at low bit rates.
语音数字化以后，码率大幅度上升，给系统的数据传输造成了很大的压力，因此进行语音压缩编码是非常必要的。
However, the digital speech needs much higher code rate than analogue signals resulting in high pressure on data transmission.
在移动通信系统中采用变速率语音压缩编码，可以最大限度地发挥系统的效能，而变速率语音编码的核心技术就是自适应技术。
The mobile communication system can furthest fulfill its function if variable rate speech coding is adopted, and the very core of this coding is the adaptive technology.
本次系统实现了基于AMBE2000的低速率语音通信，该芯片采用改进的多带激励(MBE)算法，能实现可变速率低比特率、高语音音质的语音压缩编码。
This system realized a voice communication system based on the AMBE2000, this chip USES the MBE algorithm to obtain low changeable communication rate, and high speech quality.
提出了CAMDF函数，以及基于CAMDF的语音分类与基音估计算法，并在本文的压缩编码方案中得以运用。
A function named CAMDF is proposed as well as the CAMDF-based algorithms for speech classification and pitch estimation. The algorithms are used for the coding schemes in this thesis.
模块能够实现数字语音信号的采集、压缩编码、帧结构分组输出。
Module to achieve digital voice signals in the collection, coding, a frame structure output.
在语音的存储中，存储器容量也意味着成本，而语音的压缩编码能够显著的提高存储器的利用率。
Memory capacity also means cost in the storage of speech and the speech compression coding can enhance storage efficiency.
同时掩蔽是心理声学的重要研究内容，在音频压缩编码、语音增强等方面有着广泛的应用。
Simultaneous masking which is an important research content of psychoacoustic, have a wide range of applications in audio coding, speech enhancement and so on.
同时掩蔽是心理声学的重要研究内容，在音频压缩编码、语音增强等方面有着广泛的应用。
Simultaneous masking which is an important research content of psychoacoustic, have a wide range of applications in audio coding, speech enhancement and so on.
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