Early radio receivers and record players nearly always had a knob marked “tone,” which was usually a crude low-pass filter with some form of severity adjustment. At best, these controls could ...

Tone control is a type of equalization used to make specific pitches or “frequencies” in an audio signal softer or louder. A tone control circuit is an electronic circuit that consists of a network of ...

The circuit was designed to illustrate the use of tone control circuit by which the audio signals are adjusted before being carried out to any output devices such as headphones, speakers, or recording ...