how come when you speed up an audio track, the pitch also (usually) goes up?
In: 38
Imagine sound as a series of pulses. Different pitches have X amount of pulses passing by in certain amount of time. Higher pitches have higher rate of pulses, or a *higher frequency*
When you speed something up, you are making it so all those pulse pass by in a faster amount of time, or a higher frequency… higher frequency leads to higher pitch.
Understanding that but about pulses also reveals this little mind fuck of gem… “Pitch is equal to rhythm”. I always liked how [this video](https://youtu.be/NmeogiNhdHI?t=1782) demonstrated it. (if the time stamp link doesn’t work, skip to 29:42. He shows you that by going from a repeating pulse and speeding it up, eventually you end up with an audible note, and the note’s pitch will keep increasing as the pulses are passing by more frequently. Edit: and he further elaborates on it with chords)
Latest Answers