一种音频功率测量的新方法

摘要

A new method for power measurement of audio frequencies is introduced.The scheme accomplishes analogy operation by RMS converting circuit and digital calculation by program using a particular algorithm,which can avoid the defects of thermoelectric meter,time division and sampling algorithm for power measurement of audio frequencies.The error analysis of the new method is also presented.%介绍了一种音频范围内功率测量的新方法。这种方法是以有效值转换电路实现模拟运算，以程序数据处理实现数字计算，同时利用了新的算法，克服了热电式、时分割式、采样计算式等方法测量音频功率的不足之处。文中定量地给出了这种功率测量方法对测量误差的影响，为音频范围功率的准确测量提供了新途径。