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声频功率放大器已是一种十分普及的电子设备,它不仅在专业上广泛应用于监听、扩声、有线广播、线路放大、声频调幅器等许多场合,而且通过电视机、收音机、电唱机等已深入到人们的日常生活中。为了能定量地描绘声频功率放大器的特性,规定了一些参量指标及对应的测量方法。虽然到目前为止仍有一些新的参量和测量方法被提出来,但是其中有一些主要方面一些国家已有公认的标准。我国有关部门
Audio power amplifier is already a very popular electronic equipment, it is not only widely used in professional monitoring, amplification, cable broadcasting, line amplification, audio amplitude modulator and many other occasions, but also through television sets, radios, record players, etc. have been in-depth To people’s daily life. In order to quantitatively characterize the characteristics of an audio power amplifier, a number of parametric specifications and corresponding measurement methods are specified. Although a few new parameters and measurement methods have so far been proposed, there are some of the major aspects that are already recognized in some countries. China’s relevant departments