Before we get into using sound as part of title sequences, there’s something to be gained from getting a little background on sound itself. Every sound possesses three main characteristics: pitch, tone, and amplitude. We can distinguish one sound from another based on these three characteristics.
Pitch is dependent on frequency. Frequencies are basically a number of cycles and repetitions over the course of a period of time. A high frequency will have a wave that represents more repetitions in the same period of time than a lower frequency.