When referring to sound waves, the frequency is a measure of how quickly the waves oscillate. When viewing a sound waveform, higher frequencies are represented by a shorter distances between wave peaks. When listening to sound waves, higher frequencies sound higher in pitch.

The relation of frequency to pitch involves each successive octave to have twice the frequency of the previous octave. That is, if a "C" in one octave is 8257Hz, then a "C" in the next octave is 16514Hz.

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