Acoustic phase plug
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United States of America Patent
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Aug 22, 2017
Issued Date -
N/A
app pub date -
Feb 19, 2014
filing date -
Feb 27, 2013
priority date (Note) -
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Abstract
A phase plug for a loudspeaker having a driven diaphragm, wherein at least a portion of the surface of the phase plug disposed in use adjacent the diaphragm is generally annular in two orthogonal directions and has an axis in a third orthogonal direction, and wherein at least a portion of the said annular surface is shaped such that as successive radial cross-sections through the annular surface are generated by rotating a plane about the axis, the cross-sectional shape of the surface of the phase plug varies periodically as the angle of rotation increases.
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