SYSTEM AND METHOD FOR ADAPTING ESTIMATED SECONDARY PATH

A noise cancellation system with secondary path adaptation includes a noise cancellation filter configured to receive a reference signal representative of a noise source within a predetermined volume and to generate a noise cancellation signal based at least in part on the reference signal, the nois...

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Bibliographic Details
Main Author JAIN AMIT D
Format Patent
LanguageChinese
English
Published 14.07.2023
Subjects
ACOUSTICS
ACOUSTICS NOT OTHERWISE PROVIDED FOR
METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL
MUSICAL INSTRUMENTS
PHYSICS
SOUND-PRODUCING DEVICES
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Summary:A noise cancellation system with secondary path adaptation includes a noise cancellation filter configured to receive a reference signal representative of a noise source within a predetermined volume and to generate a noise cancellation signal based at least in part on the reference signal, the noise cancellation signal when converted by a speaker producing a noise cancellation acoustic signal, the noise cancellation acoustic signal reduces noise in a cancellation region within the predetermined volume; a secondary path estimation filter configured to receive the input signal and implement an estimation of a secondary path transfer function, the secondary path transfer function being a transfer function between the speaker and the cancellation zone, the secondary path estimation filter outputting an output signal based at least in part on the estimation of the secondary path transfer function and the input signal; an adaptation module configured to adjust coefficients of the noise cancellation filter accordin
Bibliography:Application Number: CN202180070959