A periodic or continuous check of such channel characteristics as delay distortion, frequency response, and noise in an effort to reduce or eliminate the causes of errors.
周期性地或连续地检验通道的某些性能，如延迟失真、频率响应及噪声等，以便消除或减少引起错误的原因。
This paper defines phase and group delay distortion of audio system based on point view of linear system analysis and the physical meanings of group delay is discussed.
本文从线性系统分析的角度定义了音响系统的相位和群延迟失真，并讨论了所定义的群延迟物理意义。
This paper defines phase and group delay distortion of audio system based on point view of linear system analysis and the physical meanings of group delay is discussed.
本文从线性系统分析的角度定义了音响系统的相位和群延迟失真，并讨论了所定义的群延迟物理意义。
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