System and method for active acoustic control
AssigneeBAE SYSTEMS plc
InventorsJoe Alexander Tan, Jordan Cheer, Stephen Daley
Life of this patent
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Abstract
According to the present disclosure there is provided an active acoustic control system for controlling an acoustic signal propagating along a propagation path, the system comprising: an active control unit configured to: receive information from a first sensor arrangement, the information related to the acoustic signal propagating along the propagation path; generate a control signal for controlling the acoustic signal based on the information from the first sensor arrangement, by being arranged to control: a first control source arrangement comprising a finite 2D array of first control sources for generating a first control signal for controlling a first component of the acoustic signal.
Claims14
An active acoustic control system for controlling an acoustic signal propagating along a propagation path, the system comprising an active control unit configured to:
- receive first information from a first sensor arrangement, the first information related to the acoustic signal propagating along the propagation path;
- receive second information from a second sensor arrangement, the second information related to the acoustic signal propagating along the propagation path;
- separate transmitted and reflected components from a total acoustic pressure of the acoustic signal propagating along the propagation path using the first information, the second information, and a wave separation algorithm;
- control, based on the first information, a first control source arrangement comprising a finite two-dimensional (2D) array of first control sources configured to control the transmitted component of the acoustic signal;
- and
- control, based on the second information, a second control source arrangement comprising a finite 2D array of second control sources configured to control the reflected component of the acoustic signal,
- wherein the active control unit is configured to independently control the first control source arrangement and the second control source arrangement.
A method of controlling an acoustic signal propagating along a propagation path, the method comprising:
- receiving first information related to the acoustic signal propagating along the propagation path from a first sensor arrangement;
- receiving second information related to the acoustic signal propagating along the propagation path from a second sensor arrangement;
- separating transmitted and reflected components from a total acoustic pressure of the acoustic signal propagating along the propagation path using the first information, the second information, and a wave separation algorithm;
- controlling, based on the first information, a first control source arrangement comprising a finite two-dimensional (2D) array of first control sources configured to control the transmitted component of the acoustic signal;
- and
- controlling, based on the second information, a second control source arrangement comprising a finite 2D array of second control sources configured to control the reflected component of the acoustic signal,
- wherein the active control unit is configured to independently control the first control source arrangement and the second control source arrangement.
Dependencies are inferred from the claim text.