另外，作者对RTP模块的功能也进行了扩展与完善，包括：传输DTMF事件和静音压缩包。
Besides, I also expand and perfect the RTP module, including transmits DTMF event and sid.
这些算法应用于语音中的静音期间以进一步降低传输速率和提高信道利用率，是为G.729研究的最佳静音压缩方案。
These algorithms are used during silence periods of speech to reduce ratio of transmission and improve ratio of use in signal channel. It's a best silence compression scheme for G. 729.
以此类推tp552就是指有2个55 0瓦压缩机头的静音无油空压机。
By analogy TP552 is to point to have two 550 watts of compressed with quiet oil free compressor.
静音无油空压机为使用客户提供了无油、无水的洁净压缩气体。
Mute oil free compressor for using the customers with no oil, without the water clean compressed gas.
同时，根据语音信号不连续的特点，压缩算法具有静音识别功能，进一步提高了语音信号的压缩率。
According to the characteristic of discontinuous voice signal, this compression algorithm provides the function of voice active detection and improves the compress ratio of voice signal.
采用进口原装压缩机快速制冷(加热)、高效节能静音运行。
This series applies originally imported compressor that is good at rapid refrigerating (heating), which is featured by efficient energy saving and quiet operation.
为防振台配备的便携式超静音空气压缩机；
Portable ultra-quiet air compressor for vibration isolation table.
为防振台配备的便携式超静音空气压缩机；
Portable ultra-quiet air compressor for vibration isolation table.
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