Loudspeaker horn and method for controlling grating lobes in a line array of acoustic sources
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United States of America Patent
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Nov 27, 2007
Grant Date -
Nov 4, 2004
app pub date -
Feb 20, 2004
filing date -
Feb 21, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A loudspeaker horn (11) having a throat end (13) for receiving acoustic power from aligned acoustic power sources (41, 43, 45), an elongated throat (33), and a flared section (17) is provided with grating lobe mitigation fins (27, 29) that extend substantially parallel to the propagation axis of the horn from the throat end toward the mouth end of the horn's flared section. The length of the grating lobe mitigation fins is established in accordance with the degree of suppression of the grating lobes produced by the aligned acoustic power sources that is desired.
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