Airbase

 

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Sound Keys was first used to extract three separate streams from the base region of the audio spectrum. Then three instances 3D Stroke was used to create the "strings". Each has an animated path that describes a vibrating string. 3D Stroke's Path Time, found under Advanced, was used to control the movement of the strings. Each has an expression where a sine function describes the general movement of the string and this is then multiplied by the stream extracted by Sound Keys so that the strings appear to vibrate with their corresponding base frequency.

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