However, the digital speech needs much higher code rate than analogue signals resulting in high pressure on data transmission.

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。

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However, the digital speech needs much higher code rate than analogue signals resulting in high pressure on data transmission.

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。

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