![]() ![]() Pitches are usually associated with, and thus quantified as, frequencies (in cycles per second, or hertz), by comparing the sounds being assessed against sounds with pure tones (ones with periodic, sinusoidal waveforms). The oscillations of sound waves can often be characterized in terms of frequency. ![]() ![]() However, this does not necessarily mean that most people won't agree on which notes are higher and lower. Pitch is each person's subjective perception of a sound wave, which cannot be directly measured. Frequency is an objective, scientific attribute that can be measured. Pitch is closely related to frequency, but the two are not equivalent. Pitch is an auditory sensation in which a listener assigns musical tones to relative positions on a musical scale based primarily on their perception of the frequency of vibration. ![]()
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