Why does the music on a child’s toy sound ‘flat’ when the batteries are going flat?

Question

Why does the music on a child’s toy sound ‘flat’ when the batteries are going flat?

In: Physics

Answer 1

Every electronic needs X amount of volts to run, kids toys usually use 2x AA or AAA, which would supply 3 volts of electricity.

If the speaker in the toy runs on 3V, and the batteries begin to wear down and only produce 2.5V, then the speaker will still work, but will be weaker than if it got it’s proper supply.

It’s easier to see with lights. In a torch, it gets dimmer the flatter the batteries get, because the voltage needed to light up the LEDs is diminished