Question

Each key on a touch-tone telephone makes a slightly different sound when touched. This difference is due to the pitch of sound produced by each key. The difference in pitch is determined by the _____ of the sound waves coming from each key.

Answer 1

Answer: Frequency

Explanation:

It s actually the frequency of the sound waves which as perceived as pitch by our ears. Some sound waves vibrate more and hence the pitch is more and some vibrates less and the pitch is less.

The more the oscillation is the higher is the pitch and lesser the oscillation the lower is the pitch which gives us the differences.