音响系统使用的均衡器。是根据人耳对音频频率响度不相等而提出的。人耳对频率响度特性如附图(a)曲线1所示。为了弥补人耳这一不足,音响界曾生产出如附图(a)曲线2所示特性的均衡器。实际上这一举措是画蛇添足,入耳的响度频率特性是天生的,是入耳听觉的本能。为了这一点,音响生 Equalizer for sound system. Is based on human ears on the audio frequency and loudness is not raised. Human ear versus frequency and loudness characteristics are shown in curve 1 of Fig. (A). In order to make up for the lack of people’s ears, the audio industry has produced an equalizer as shown in curve 2 of Figure (a). In fact, this move is superfluous, the ear frequency characteristics of the loudness is born, is the ear hearing instinct. For this, sound students