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Pitch

Acoustics
The auditory attribute on the basis of which tones may be ordered on a musical scale. Two aspects of the notion of pitch can be distinguished in music: one related to the frequency (or fundamental frequency) of a sound (measured in Hz) which is called pitch height, and the other related to its place in a musical scale which is called pitch chroma.

Gear Design
Pitch is the distance between the teeth on a gear.A fine pitch gear has many small teeth and a coarse pitch gear has fewer, larger teeth. An interesting observation is that thestiffness of a gear tooth is not related to the pitch.

See also: Absolute Pitch, Gear Design.

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