When you turn down or up the volume on devices with either a wheel or button, what actually happens that allows it to sound quieter or louder?

Question

When you turn down or up the volume on devices with either a wheel or button, what actually happens that allows it to sound quieter or louder?

In: Technology

Answer 1

There are various ways to do it. One is a potentiometer (if the knob has a hard low stop and hard high stop it may be like this), or it could use essentially micro switches to send pulses that the device uses to count up or down. There are probably other ways to do it as well.