Signal processing device for acoustic transducer array
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United States of America Patent
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Jan 15, 2008
Grant Date -
Feb 24, 2005
app pub date -
Oct 10, 2002
filing date -
Oct 11, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The invention provides transducer arrays which are capable of outputting sound beams having a relatively constant width, and with minimal sidelobes, across a range of frequencies. This is achieved by utilising one or more digital signal modifiers within the signal path between the input sound signal and the array of transducers. Variable window functions are also disclosed.
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