信道带宽是非常有限和宝贵的资源，而低码率语音编码技术是节省带宽的重要方法之一。
Moreover, the bandwidth is a very limited and precious resource. And the low code rate speech codes is one of the important methods to be economical bandwidth.
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.
为了实现甚低码率下的透明质量语音编码，提出了一种基音周期估计算法。
A kind of robust pitch estimation algorithm is presented for parametric speech coding with transparent quality at very low bit rate.
本文论述了一种基于软件无线电的甚低频低码率语音数字岩层通信机，它采用了QPSK调制和FEC信道编码技术。
This paper deals with a digital speech communicator of very low frequency and low bit digital communication based on software ratio, which USES the technique of QPSK and FEC coding.
本文利用新一代可编制逻辑器件在数字信号处理领域的优势，对语音信号低码率编码的FPGA实现进行了深入研究。
Use the predominance of new programmable logic chip on digital signal domain lucubrate on the implement with FPGA of speech signal low bit rate coding.
语音编码是数字语音通信中的一项重要技术，低码率的语音编码器在解决宽带资源的限制方面发挥着重要的作用。
Speech of coding is a very important technology in digital speech communication and low-bit-rate speech codec plays an important role in resolving limit of bandwidth resource.
语音编码是数字语音通信中的一项重要技术，低码率的语音编码器在解决宽带资源的限制方面发挥着重要的作用。
Speech of coding is a very important technology in digital speech communication and low-bit-rate speech codec plays an important role in resolving limit of bandwidth resource.
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