公开(公告)号：US09928825B2

公开(公告)日：2018-03-27

申请号：US15126754

申请日：2015-09-09

Applicant: Goertek Inc.

Inventor： Song Liu ,  Linzhang Wang ,  Bo Li

IPC: G10K11/16 ,  H03B29/00 ,  H04R3/00 ,  G10K11/178 ,  H04R1/10

CPC classification number: G10K11/178 ,  G10K11/1781 ,  G10K11/1785 ,  G10K11/17881 ,  G10K2210/1081 ,  G10K2210/3016 ,  G10K2210/3026 ,  G10K2210/3027 ,  G10K2210/3046 ,  H04R1/1008 ,  H04R1/1083 ,  H04R3/005 ,  H04R2410/07

Abstract: The present method comprises: providing a feedforward microphone outside of each earphone of the active noise-reduction earphones; detecting an amount of external noise by using the feedforward microphone; calculating a weighted energy of a noise signal; and determining whether it is needed to activate the active noise-reduction system based on the weighted energy. When the active noise-reduction control is needed, calculating energy values of two sub-bands, corresponding to the feedforward noise-reduction amount and the feedback noise-reduction amount respectively, in the noise signal, thereby determining the noise-reduction amounts of the feedforward noise reduction system and the feedback noise-reduction system, and controlling the earphone to perform corresponding feedforward noise reduction and feedback noise reduction. Compared with the existing active noise-reduction technologies with a fixed noise reduction, the present invention can optimize the noise-reduction effect.

公开(公告)号：US20180122359A1

公开(公告)日：2018-05-03

申请号：US15857903

申请日：2017-12-29

Applicant: Goertek Inc.

Inventor： Song Liu ,  Linzhang Wang ,  Bo Li

IPC: G10K11/178 ,  H04R1/10

CPC classification number: G10K11/17815 ,  G10K2210/1081 ,  G10K2210/3016 ,  G10K2210/3026 ,  G10K2210/3027 ,  G10K2210/3046 ,  H04R1/1008 ,  H04R1/1016 ,  H04R1/1083 ,  H04R2410/05 ,  H04R2410/07 ,  H04R2460/01

Abstract: A noise-reduction control method includes performing frequency-domain weighting and temporal-domain weighting to a noise signal collected at current time to obtain a weighted energy. Judging whether active noise-reduction control is needed based on the weighted energy; calculating an energy value of a first sub-band and an energy value of a second sub-band of the noise signal collected by the feedforward microphone at the current time, wherein the first sub-band and the second sub-band are determined based on a feedforward noise-reduction curve and a feedback noise-reduction curve of the earphone, respectively. Determining a feedforward noise-reduction amount and a feedback noise-reduction amount based on the energy value of the first sub-band and the energy value of the second sub-band, respectively. Controlling the earphone to perform feedforward noise reduction based on the feedforward noise-reduction amount, and controlling the earphone to perform feedback noise reduction based on the feedback noise-reduction amount.

公开(公告)号：US10115387B2

公开(公告)日：2018-10-30

申请号：US15857903

申请日：2017-12-29

Applicant: Goertek Inc.

Inventor： Song Liu ,  Linzhang Wang ,  Bo Li

IPC: G10K11/16 ,  G10K11/178 ,  H04R1/10

Abstract: A noise-reduction control method includes performing frequency-domain weighting and temporal-domain weighting to a noise signal collected at current time to obtain a weighted energy. Judging whether active noise-reduction control is needed based on the weighted energy; calculating an energy value of a first sub-band and an energy value of a second sub-band of the noise signal collected by the feedforward microphone at the current time, wherein the first sub-band and the second sub-band are determined based on a feedforward noise-reduction curve and a feedback noise-reduction curve of the earphone, respectively. Determining a feedforward noise-reduction amount and a feedback noise-reduction amount based on the energy value of the first sub-band and the energy value of the second sub-band, respectively. Controlling the earphone to perform feedforward noise reduction based on the feedforward noise-reduction amount, and controlling the earphone to perform feedback noise reduction based on the feedback noise-reduction amount.

公开(公告)号：US09749732B2

公开(公告)日：2017-08-29

申请号：US15115525

申请日：2015-09-09

Applicant: Goertek Inc.

Inventor： Song Liu ,  Linzhang Wang ,  Bo Li

IPC: H04R1/10 ,  H04R29/00 ,  H03G5/16

CPC classification number: H04R1/1041 ,  H03G5/165 ,  H04R1/1083 ,  H04R3/04 ,  H04R29/001 ,  H04R2430/03 ,  H04R2460/15

Abstract: The present invention discloses a method and an apparatus for earphone sound effect compensation and an earphone. The method of the present invention comprises: obtaining monitored signal data in a current wearing state of an earphone user according to a signal collected by a monitoring microphone and an audio signal played by a loudspeaker of the earphone; computing error data of the monitored signal data in the current wearing state relative to standard signal data in a standard wearing state of the earphone; and performing sound effect compensation to the earphone according to the error data. The technical solution of the present invention adopts an adaptive digital signal processing manner, which can dynamically compensate for sound effects in different earphone wearing manners and enable an earphone user to appreciate an audible effect in a standard earphone wearing state.