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Control system for a transducer array

  • US 8,260,442 B2
  • Filed: 04/24/2009
  • Issued: 09/04/2012
  • Est. Priority Date: 04/25/2008
  • Status: Expired due to Fees
First Claim
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1. A sensor array system comprising:

  • a plurality of sensors;

    a plurality of inputs, each for receiving a signal from a respective one of the plurality of sensors;

    one or more outputs for outputting signals derived using the signals from said inputs;

    a plurality of sparse filters each coupled between an input and an output for filtering the sensor signal received at the coupled input; and

    one or more integrators coupled to one or more of said sparse filters for integrating a signal output from the coupled sparse filter and to provide the integrated signal to the corresponding output;

    wherein the plurality of sparse filters are digital filters that comprise;

    a delay line having P delay elements through which digital sample values of the sensor signal received at the coupled input pass; and

    Q coefficient multipliers for multiplying sample values from selected ones of the delay elements with a respective filter coefficient; and

    wherein P and Q are integer values with Q having a value less than 30% of P.

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