ECHO是混响的意思，唱卡拉OK时候用的，调节音响混响效果。 02 BASS是低音，调节音响播放时的低频效果，例如炸弹轰炸时的效果。 03 TREBLE是高音，调节音响播放时的高频效果，例如玻璃破碎时的声音。 这些是为了营造一个更逼真的听音或观影的效果而设计的音响 ...

The treble control works in a similar manner as the bass control elsewhere in this site, but contains several modifications, of course. One of these is the series network C1-C2– R1– R1 1. The d.c.

This bass and treble controller circuit is based on the classic Baxandall tone control circuitry and provides a maximum cut and boost of around 10dB at 10kHz and 50Hz. The first stage that is built ...