Locomotive acoustic warning system
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United States of America Patent
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Aug 11, 2015
Grant Date -
Aug 22, 2013
app pub date -
Jan 16, 2013
filing date -
Feb 17, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A sound system for a locomotive mounts a loudspeaker line array for broadside firing forward from the vehicle. Additional loudspeakers are installed on the locomotive for projecting sound to the sides. A control system applies drive signals to the loudspeakers of the line array with the control system providing phase adjustment of drive signals applied to each loudspeaker of the line array to control side to side directional steering of a projected sound beam. The control system includes an automated, location dependent sub-system for selecting beam width and directional steering of a projected sound beam.
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