So wideband digital speech communication with high quality becomes more and more desired.
因此，清晰、高质量的宽带数字语音通信成为一种需求。
The process, principle and key technologies of digital speech communication based on network were introduced.
介绍了网络数字语音通讯的过程、原理和关键技术。
Now in the area of wideband digital speech communication, G. 722 standard which was approved by CCITT in 1988 becomes more and more popular.
目前，在宽带数字音频通信领域，1988年由CCITT制定的G.722标准被广泛认可和应用。
The performance of the speech process system and the quality of the digital speech communication can also be improved in the disturbed environment by enhancement implement.
通过增强处理可以改善原系统在外界环境干扰条件下的性能，提高语音数字通信质量。
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。
IntroductionIn the communication systems, echo and noise will seriously affect speech communication quality, such as IP telephone, videophone and hand-free digital cell phone systems etc.
引言在通信系统中，例如IP电话、可视电话及免提数字蜂窝电话系统中，回声和噪声会严重影响通信质量。
One scheme of digital speech encryption communication with spatiotemporal chaotic synchronization was proposed.
提出一种利用时空混沌同步的数字语音加密通信方案。
When the right coding mode is chosen, baud rate should be set more than digital signals transmission velocity, and the speech communication quality can be guaranteed.
在正确选择编码方式后，波特率设置为大于数字信号传输速率，可保证语音通信质量。
In the past decades, multirate digital filter Banks attract many attentions in various fields, such as speech, image and communication applications.
在过去的几十年中，多速率数字滤波器组在许多领域已得到广泛的应用，如语音、图像处理和通信领域等。
Computer experiments for secure communication of digital speech are implemented and the results are satisfactory.
通过计算机模拟实验实现数字语音的保密通信，取得了满意的结果。
The results show that the system can produce toll-speech quality, and can be widely used in the digital voice storage system and network multimedia communication system.
结果表明该系统语音质量良好，可应用于语音存储、网络多媒体通信系统等领域。
As speech is the most important, efficient and convenient way in communications, speech communication holds the importance in modern digital communication system.
其中，通过语音传递信息是人们最重要、最有效和最方便的通信和交流方式，语音通信在现代数字通信系统中占有重要的地位。
Conventional multi channel speech communication recording systems consist of analog or digital tape recorder with large size and costs.
传统的多通道通信记录设备是由模拟磁带机或数字磁带机构成，设备庞大复杂，价格高昂。
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。
Speech compression plays an important part in storage and digital communication of speech signal because of its redundancy.
语音信号存在着很大的冗余度，因此语音压缩在存储和数字化传输方面起到的至关重要的作用。
Speech compression plays an important part in storage and digital communication of speech signal because of its redundancy.
语音信号存在着很大的冗余度，因此语音压缩在存储和数字化传输方面起到的至关重要的作用。
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