恒定比特率 CBR ; Constant bit rate ; constante bitsnelheid ; konstant bithastighet
固定比特率 CBR ; constant bit rate ; FBR
未指定比特率 UBR ; Unspecified Bit Rate
不定比特率 UBR
恒定比特率业务 constant bit rate service ; Constant bit rate ; CBR
固定比特率控制 constant bit rate
定比特率业务 UBR
固定比特率信号 Constant bit rate signal
固定比特率的源 constant bit rate source
数字语音压缩的目的是在保证语音一定质量的前提下尽可能降低其编码比特率，提高有限传输带宽的利用率。
Premised on assurance of speech quality, digital speech coding can reduce rate of bits, for the purpose of increasing use of finite bandwidth.
一般认为，在很低比特率场合中解码图像会有一定程度的失真。
It is normal to expect a certain degree of distortion of the decoded images for very tow-bit - rate applications.
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