公开(公告)号：US11657796B2

公开(公告)日：2023-05-23

申请号：US17564822

申请日：2021-12-29

Applicant: Harbin Engineering University

Inventor： Guoyong Jin ,  Shanjun Li ,  Tiangui Ye

IPC: G10K11/178

CPC classification number: G10K11/17815 ,  G10K11/17819

Abstract: An active control method for filtered reference affine projection sign algorithm based on variable step size includes: S1, acquiring impulse noise signals and transmitting the signals to control filters; S2, transmitting the impulse noise signals by the control filters to post filters; S3, generating cancellation signals of the impulse noise signals by the post filters according to the impulse noise signals and internal active control algorithms, and transmitting the cancellation signals to a speaker; S4, sending out the cancellation signal by the speaker to superimpose with the impulse noise signals to cancel the impulse noise signal. A convex combination structure and a variable step size strategy are adopted, and by adjusting step size coefficients in the control filter structure, convergence speed of algorithm is controlled, contradiction between convergence speed and steady-state error is coordinated, convergence performance of control algorithm to impulse noises is improved, and impulse noises are effectively controlled.

公开(公告)号：US20220392426A1

公开(公告)日：2022-12-08

申请号：US17564822

申请日：2021-12-29

Applicant: Harbin Engineering University

Inventor： Guoyong Jin ,  Shanjun Li ,  Tiangui Ye

IPC: G10K11/178

Abstract: An active control method for filtered reference affine projection sign algorithm based on variable step size includes: S1, acquiring impulse noise signals and transmitting the signals to control filters; S2, transmitting the impulse noise signals by the control filters to post filters; S3, generating cancellation signals of the impulse noise signals by the post filters according to the impulse noise signals and internal active control algorithms, and transmitting the cancellation signals to a speaker; S4, sending out the cancellation signal by the speaker to superimpose with the impulse noise signals to cancel the impulse noise signal. A convex combination structure and a variable step size strategy are adopted, and by adjusting step size coefficients in the control filter structure, convergence speed of algorithm is controlled, contradiction between convergence speed and steady-state error is coordinated, convergence performance of control algorithm to impulse noises is improved, and impulse noises are effectively controlled.