Pitch is one of the characteristics of sound, and it refers to the perceived frequency of a sound wave. The pitch of a violin note may differ from that of a flute note even if they arrive at our ears ...

The time period of a sound wave is represented by the symbol T, and its SI unit is second (s).

The time taken by two consecutive compressions or rarefactions to cross a fixed point is called the time period of the wave. It represents the duration of one complete oscillation of the sound wave.

Hertz (Hz) is the unit used to measure frequency and it represents the number of oscillations or cycles per second. For example, a frequency of 100 Hz means that there are 100 oscillations occurring per second.

Frequency is typically represented by the Greek letter ν (nu) and its SI unit is hertz (Hz).