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本文指出了影响积分声级计时间平均特性的主要因素，着重分析了采样频率对于以两次平均的方式给出ＬＡｅｑ的积分声级计的时间平均特牲的影响，并通过实验验证了这一分析。最后指出，要使这种积分声级计的时间平均特牲达到有关标准和规程规定的要求，采样频率应不低于１０００Ｈｚ。
This paper points out the main factors that affect the average temporal characteristics of the integrated sound level meter. It mainly analyzes the effect of the sampling frequency on the time averaged characteristic of the integrated sound level meter that gives twice the average LAeq, and verifies this by experiments analysis. Finally, it is pointed out that the sampling frequency should not be less than 1000Hz in order to make the time average of the integral sound level meter meet the requirement of relevant standards and regulations.