A simple circuit uses one control device to control bass and treble simultaneously, ... Simple Circuit Offers Single-Adjustment Tone Control. Jan. 24, 2012.

Many years ago, audio equipment came with a tone control, a simple RC filter that would cut or boost the bass to taste. As time passed, this was split into two controls for bass and treble, and the… ...

The circuit uses the 4017, a simple CMOS decade counter. The 4017 takes an input clock signal then sequentially outputs a high pulse on each of 10 output pins. As such, the 4017 does almost ...