公开(公告)号：US20240012140A1

公开(公告)日：2024-01-11

申请号：US18210856

申请日：2023-06-16

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Dana J. TAIPALE ,  Meena MATAI

IPC: G01S15/04

CPC classification number: G01S15/04

Abstract: A method for generating a signal for a device process may include retrieving a reduced-memory template signal centered on a chosen subharmonic of a reconstruction sample rate, upsampling the reduced-memory template signal to generate the signal for the device process at a desired data rate, and communicating the signal to a transducer for playback by the transducer.

公开(公告)号：US20230421951A1

公开(公告)日：2023-12-28

申请号：US17847319

申请日：2022-06-23

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Dayong ZHOU ,  Brad ZWERNEMANN ,  Kaichow LAU ,  Dana J. TAIPALE ,  John L. MELANSON

IPC: H04R3/02

CPC classification number: H04R3/02

Abstract: Circuitry for acoustic crosstalk cancellation between first and second acoustic signals, the circuitry comprising: crosstalk cancellation circuitry configured to: receive a first audio signal and, based on the received first audio signal, generate a first crosstalk cancellation signal; receive a second audio signal and, based on the received second audio signal, generate a second crosstalk cancellation signal; combine the first crosstalk cancellation signal with a signal indicative of the second audio signal to generate a first crosstalk cancellation circuitry output signal; and combine the second crosstalk cancellation signal with a signal indicative of the first audio signal to generate a second crosstalk cancellation circuitry output signal; and output stage circuitry configured to: receive the first crosstalk cancellation circuitry output signal and, based on the received first crosstalk cancellation circuitry, generate a first drive signal for driving a first speaker to generate the first acoustic signal; and receive the second crosstalk cancellation circuitry output signal and, based on the received second crosstalk cancellation circuitry, generate a second drive signal for driving a second speaker to generate the second acoustic signal, wherein a parameter of the crosstalk cancellation circuitry is variable based on one or more of: a position of a user of a host device incorporating the circuitry with respect to the host device; a volume setting of the host device; a level of the first and/or second crosstalk cancellation signal; and an operational parameter of the output stage circuitry.

公开(公告)号：US20240187787A1

公开(公告)日：2024-06-06

申请号：US18182600

申请日：2023-03-13

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Andrew RUMELT ,  Dana J. TAIPALE

IPC: H04R3/02

CPC classification number: H04R3/02

Abstract: A method for reducing perceived audio distortion in a loudspeaker in response to an input audio signal may include attenuating the input audio signal within an attenuation frequency band of the input audio signal to generate a limited audio signal, generating masking audio to psychoacoustically mask absence of audio content attenuated from the attenuation frequency band of the input audio signal, and combining the limited audio signal and the masking audio to generate an output audio signal.

公开(公告)号：US20220406152A1

公开(公告)日：2022-12-22

申请号：US17549399

申请日：2021-12-13

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Dana J. TAIPALE ,  Jon D. HENDRIX ,  Emmanuel A. MARCHAIS

IPC: G08B6/00

Abstract: A method may include receiving, by a transducer driving system, a first signal for driving an amplifier that drives an electromagnetic load and receiving, by the transducer driving system, a second signal driven by the amplifier in order to control a feedback loop of the transducer driving system. The method may also include detecting unexpected spectral content in the second signal, declaring an indicator event based on the detected unexpected spectral content, determining whether the indicator event occurs in an undesired pattern, and in response to the indicator event occurring in the undesired pattern, modifying a behavior of the transducer driving system.

公开(公告)号：US20210175869A1

公开(公告)日：2021-06-10

申请号：US16851468

申请日：2020-04-17

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Dana J. TAIPALE

IPC: H03G11/06 ,  G10K9/13 ,  H03G11/00 ,  H03F3/50

Abstract: A system may include a first input for receiving a first signal for driving an amplifier that drives a load, a second input for receiving a second signal driven by the amplifier, and an instability detector for detecting instability of a feedback loop for controlling the first signal based on comparison of the first signal and the second signal.