side tone circuit 侧音电路
multi-tone circuit 多音电路
Silve tone Circuit 银石赛道
colour tone circuit 色调电路
tone control circuit 音调控制电路 ; [电视] 色调控制电路
tone keyer circuit 音频键控电路
Bass-treble tone control circuit 低音高音音调控制电路
Basstreble tone control circuit 低音高音音调控制电路
circuit anti-side-tone 消测音电路
In other words, they can only be used for tape recording and playback rather than for a "loop" containing an equalizer (for tone control) or other circuit such as a surround sound processor.
换句话说，它们只能用于录音和回放，而不是一个“循环”包含诸如环绕声处理器均衡器(用于音调控制)或其他电路。
The decoder circuit is also easy to construct. You will have to physically wire (using alligator clips for instance) the TONE out pinout from the generator to the TONE in pinout of the decoder.
解码器电路也非常易于搭建。你只需要发生器上的TONE OUT输出脚与解码器的TONE IN输出脚之间手动绕(使用鳄鱼夹会较快)上导线即可。
The principle of the tone detection circuit is also studied and a method of designing the filter is given. At last, the coefficient corresponding to the filter is calculated.
本文简单地讨论了调制解调器的单音检测电路的原理，分析了相应的滤波器设计方法，并给出了具体计算结果。
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