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

Turn the knob marked volume to the right (or press the up arrow) to make it Too Damn Loud & turn it to the left to hide yourself from the monsters.