公开(公告)号：US10701484B2

公开(公告)日：2020-06-30

申请号：US15933347

申请日：2018-03-22

Applicant: SYNAPTICS INCORPORATED

Inventor： Trausti Thormundsson ,  Govind Kannan ,  Harry Lau ,  Mark Edward Miller

IPC: H04R3/00 ,  G10L19/00 ,  H03G3/00 ,  H03G3/30 ,  H04R29/00

Abstract: A system and a method provide for protecting a loudspeaker from thermal and/or mechanical failure by monitoring for over-temperature and over-power conditions. The system generates a first gain from a first speaker protection controller in response to a driving voltage and/or a driving current of a loudspeaker, and generates a second gain from a second speaker protection controller in response to the driving voltage and/or a driving current of the loudspeaker, if the temperature exceeds a thermal limit or if the power exceeds a maximum power. The system applies the second gain to an audio signal to lower the audio signal if the first speaker protection controller fails.

公开(公告)号：US11696070B2

公开(公告)日：2023-07-04

申请号：US17504934

申请日：2021-10-19

Applicant: Synaptics Incorporated

Inventor： Richard Hodges ,  Harry Lau ,  Michael Townsend

IPC: H04R3/00 ,  H04R29/00 ,  H04R3/04 ,  H03F3/181 ,  H03F3/217

CPC classification number: H04R3/007 ,  H04R3/04 ,  H04R29/001 ,  H03F3/181 ,  H03F3/217 ,  H03F2200/03

Abstract: Systems and methods for protecting a loudspeaker from excessive excursion include an audio source, an adaptive excursion protection filter, an audio clipper, an inverse excursion protection filter, an amplifier and a loudspeaker. The system performs operations including receiving an audio signal, applying an excursion protection filter, the excursion protection filter adapting in real-time to one or more speaker conditions, clipping the audio signal, applying an inverse excursion protection filter, and amplifying, using an amplification circuit, the audio signal for output to the speaker.

公开(公告)号：US11184705B2

公开(公告)日：2021-11-23

申请号：US16672251

申请日：2019-11-01

Applicant: SYNAPTICS INCORPORATED

Inventor： Richard Hodges ,  Harry Lau ,  Michael Townsend

IPC: H04R3/00 ,  H04R29/00 ,  H04R3/04 ,  H03F3/181 ,  H03F3/217

Abstract: Systems and methods for protecting a loudspeaker from excessive excursion include an audio source, an adaptive excursion protection filter, an audio clipper, an inverse excursion protection filter, an amplifier and a loudspeaker. The system performs operations including receiving an audio signal, applying an excursion protection filter, the excursion protection filter adapting in real-time to one or more speaker conditions, clipping the audio signal, applying an inverse excursion protection filter, and amplifying, using an amplification circuit, the audio signal for output to the speaker.

公开(公告)号：US20210136491A1

公开(公告)日：2021-05-06

申请号：US16672251

申请日：2019-11-01

Applicant: SYNAPTICS INCORPORATED

Inventor： Richard Hodges ,  Harry Lau ,  Michael Townsend

IPC: H04R3/00 ,  H04R29/00 ,  H04R3/04

Abstract: Systems and methods for protecting a loudspeaker from excessive excursion include an audio source, an adaptive excursion protection filter, an audio clipper, an inverse excursion protection filter, an amplifier and a loudspeaker. The system performs operations including receiving an audio signal, applying an excursion protection filter, the excursion protection filter adapting in real-time to one or more speaker conditions, clipping the audio signal, applying an inverse excursion protection filter, and amplifying, using an amplification circuit, the audio signal for output to the speaker.

公开(公告)号：US20180279044A1

公开(公告)日：2018-09-27

申请号：US15933347

申请日：2018-03-22

Applicant: SYNAPTICS INCORPORATED

Inventor： Trausti Thormundsson ,  Govind Kannan ,  Harry Lau ,  Mark Edward Miller

IPC: H04R3/00 ,  H04R29/00 ,  H03G3/30 ,  G10L19/00

Abstract: A system and a method provide for protecting a loudspeaker from thermal and/or mechanical failure by monitoring for over-temperature and over-power conditions. The system generates a first gain from a first speaker protection controller in response to a driving voltage and/or a driving current of a loudspeaker, and generates a second gain from a second speaker protection controller in response to the driving voltage and/or a driving current of the loudspeaker, if the temperature exceeds a thermal limit or if the power exceeds a maximum power. The system applies the second gain to an audio signal to lower the audio signal if the first speaker protection controller fails.