Control system for a transducer array
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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Abstract
A control system is provided for controlling a transducer array. The control system includes a plurality of sparse filters and integrators. The control system can be used to separate signals from a plurality of sources or to generate complex signal patterns that combine and map to different spatial regions.
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Citations
16 Claims
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1. A sensor array system comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An actuator array system comprising:
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a plurality of actuators; one or more inputs, each for receiving a respective control signal; a plurality of outputs, each for outputting a signal to a respective one of the plurality of actuators; a plurality of sparse filters each coupled between an input and an output for filtering the control signal received at the coupled input; and a plurality of 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 control 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. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A sensor array processing system comprising:
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a plurality of inputs, each for receiving a signal from a respective one of a 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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16. An actuator array processing system comprising:
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one or more inputs, each for receiving a respective control signal; a plurality of outputs, each for outputting a signal to a respective one of a plurality of actuators; a plurality of sparse filters each coupled between an input and an output for filtering the control signal received at the coupled input; and a plurality of 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 filter are digital filters that comprise; a delay line having P delay elements through which digital sample values of the control 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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Specification