Why does the pitch of an audio clip go higher or lower when slowed or sped up?

Question

Why does the pitch of an audio clip go higher or lower when slowed or sped up?

In: Technology

Answer 1

The pitch is directly related to the frequency of the sound wave measured by the number of wiggles over time. If you speed up or slow down a song, you’re affecting the “time” part of the pitch.

Because frequency is “over time”, slowing down or lengthening the time lowers the frequency/pitch. Likewise, speeding up or shortening time raises the frequency/pitch.