A sound whose PITCH varies continuously in time over a given range, such as a siren or the sound of a bowed or plucked string whose length is changing.
Compare: DOPPPLER EFFECT, DRONE, FLUTTER. See also: LAW OF UNCERTAINTY, MASS.
Sound
Example: Glissando on a cello
string.
Sound Example: Long glissando of a siren, Alliance, Alberta.
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