公开(公告)号：US20160309270A1

公开(公告)日：2016-10-20

申请号：US15195785

申请日：2016-06-28

Applicant: Cirrus Logic, Inc.

Inventor： Antonio John Miller ,  Jie Su

IPC: H04R29/00 ,  G06F3/16

CPC classification number: H04R29/001 ,  G06F3/165 ,  H04R3/00 ,  H04R3/005 ,  H04R2410/05 ,  H04R2460/01 ,  H04R2499/11

Abstract: A speaker impedance may be determined by monitoring a voltage and/or current of the speaker. The calculated impedance may be used to determine whether the mobile device containing the speaker is on- or off-ear. The impedance determination may be assisted by applying a test tone low level signal to the speaker. The test tone may be inaudible to the user, but used to determine an impedance of the speaker at the frequency of the test tone. The impedance at that test tone may be used to determine whether a resonance frequency of the speaker is at a frequency corresponding to an on- or off-ear condition. The measured speaker impedance may be provided as feedback to an adaptive noise cancellation (ANC) algorithm to adjust the output at the speaker. For example, when the mobile device is removed from the user's ear, the ANC algorithm may be disabled.

Abstract translation: 扬声器阻抗可以通过监视扬声器的电压和/或电流来确定。 所计算的阻抗可用于确定包含扬声器的移动设备是在耳机还是离线耳机。 可以通过向扬声器施加测试音低电平信号来辅助阻抗确定。 测试音可能对用户听不到，但用于确定扬声器在测试音频率处的阻抗。 可以使用该测试音调处的阻抗来确定扬声器的谐振频率是否处于与耳外状态相对应的频率。 所测量的扬声器阻抗可以被提供为自适应噪声消除（ANC）算法的反馈，以调整扬声器处的输出。 例如，当从用户的耳朵移除移动设备时，可以禁用ANC算法。

公开(公告)号：US09467776B2

公开(公告)日：2016-10-11

申请号：US13844602

申请日：2013-03-15

Applicant: Cirrus Logic, Inc.

Inventor： Antonio John Miller ,  Jie Su

IPC: H04R3/00

CPC classification number: H04R3/005 ,  H04R2410/05 ,  H04R2499/11

Abstract: Coupling between a user's ear and a speaker of a mobile device may be determined by measuring an impedance of the speaker. When the user presses the mobile device against the user's ear, the speaker impedance changes as a result of loading in the speaker's acoustic radiation impedance. The speaker impedance change may be correlated with the force applied by the user to the mobile device. The measured speaker impedance may be provided as feedback to an adaptive noise cancellation (ANC) algorithm to adjust the output at the speaker. For example, when the mobile device is removed from the user's ear, the ANC algorithm may be muted.

Abstract translation: 可以通过测量扬声器的阻抗来确定用户的耳朵和移动设备的扬声器之间的耦合。 当用户将用户的耳朵按压移动设备时，由于扬声器的声辐射阻抗的加载，扬声器的阻抗会改变。 扬声器阻抗变化可能与用户对移动设备施加的力相关。 所测量的扬声器阻抗可以被提供为自适应噪声消除（ANC）算法的反馈，以调整扬声器处的输出。 例如，当从用户的耳朵移除移动设备时，ANC算法可以被静音。

公开(公告)号：US09363599B2

公开(公告)日：2016-06-07

申请号：US14864660

申请日：2015-09-24

Applicant: Cirrus Logic, Inc.

Inventor： Jie Su ,  Samuel Oyetunji

IPC: H04R3/00

CPC classification number: H04R3/007

Abstract: In accordance with these and other embodiments of the present disclosure, systems and methods may include a controller configured to be coupled to an audio speaker, wherein the controller receives an audio input signal, and based on a displacement transfer function associated with the audio speaker, processes the audio input signal to generate an output audio signal communicated to the audio speaker, wherein the displacement transfer function correlates an amplitude and a frequency of the audio input signal to an expected displacement of the audio speaker in response to the amplitude and the frequency of the audio input signal.

公开(公告)号：US09362878B1

公开(公告)日：2016-06-07

申请号：US13756799

申请日：2013-02-01

Applicant: Cirrus Logic, Inc.

Inventor： Jie Su

IPC: H03G3/00

CPC classification number: H03G3/007 ,  H03G9/005 ,  H03G9/025 ,  H04R3/007

Abstract: In accordance with embodiments of the present disclosure, a system may include an audio speaker and a controller coupled to the audio speaker. The controller may receive a current signal indicative of an electrical current associated with the audio speaker and a voltage signal indicative of an electrical voltage associated with the audio speaker. In response to the current signal and the voltage signal, the controller may estimate modeled characteristics for the audio speaker, and based on the modeled characteristics, control an audio signal communicated from the controller to the audio speaker wherein the modeled characteristics are based on discrete-time domain information and displacement domain information and the discrete-time domain information and the displacement domain information are used to update the modeled characteristics.

Abstract translation: 根据本公开的实施例，系统可以包括音频扬声器和耦合到音频扬声器的控制器。 控制器可以接收指示与音频扬声器相关联的电流的电流信号和指示与音频扬声器相关联的电压的电压信号。 响应于当前信号和电压信号，控制器可以估计音频扬声器的建模特性，并且基于所建模的特性，控制从控制器传送到音频扬声器的音频信号，其中建模的特性基于离散 - 使用时域信息和位移域信息以及离散时域信息和位移域信息来更新建模特征。

公开(公告)号：US20160014507A1

公开(公告)日：2016-01-14

申请号：US14864639

申请日：2015-09-24

Applicant: Cirrus Logic, Inc.

Inventor： Jie Su

IPC: H04R3/00

CPC classification number: H04R3/007

Abstract: In accordance with embodiments of the present disclosure, systems and methods may include a controller configured to be coupled to an audio speaker, wherein the controller receives one or more signals indicative of one or more operating characteristics of the audio speaker and compares the one or more operating characteristics to one or more speaker protection thresholds, and based on the comparison, processes an audio input signal to generate an audio output signal communicated from the controller to the audio speaker, further wherein the one or more speaker protection thresholds are based on offline reliability testing of one or more audio speakers similar to the audio speaker and the controller generates one or more modeled parameters for the audio speaker and modifies the one or more speaker protection thresholds based on the one or more modeled parameters.

Abstract translation: 根据本公开的实施例，系统和方法可以包括被配置为耦合到音频扬声器的控制器，其中控制器接收指示音频扬声器的一个或多个操作特性的一个或多个信号，并将该一个或多个 对一个或多个扬声器保护阈值的操作特性，并且基于比较，处理音频输入信号以产生从控制器传送到音频扬声器的音频输出信号，其中，一个或多个扬声器保护阈值基于离线可靠性 类似于音频扬声器的一个或多个音频扬声器的测试和控制器产生用于音频扬声器的一个或多个建模参数，并且基于一个或多个建模的参数修改一个或多个扬声器保护阈值。

公开(公告)号：US09161126B2

公开(公告)日：2015-10-13

申请号：US13791509

申请日：2013-03-08

Applicant: Cirrus Logic, Inc.

Inventor： Jie Su ,  Samuel Oyetunji

IPC: H04R3/00

CPC classification number: H04R3/007

Abstract: In accordance with these and other embodiments of the present disclosure, systems and methods may include a controller configured to be coupled to an audio speaker, wherein the controller receives an audio input signal, and based on a displacement transfer function associated with the audio speaker, processes the audio input signal to generate an output audio signal communicated to the audio speaker, wherein the displacement transfer function correlates an amplitude and a frequency of the audio input signal to an expected displacement of the audio speaker in response to the amplitude and the frequency of the audio input signal.

Abstract translation: 根据本公开的这些和其他实施例，系统和方法可以包括被配置为耦合到音频扬声器的控制器，其中控制器接收音频输入信号，并且基于与音频扬声器相关联的位移传递函数， 处理音频输入信号以产生传送到音频扬声器的输出音频信号，其中，位移传递函数响应于音频扬声器的幅度和频率将音频输入信号的幅度和频率与音频扬声器的预期位移相关联 音频输入信号。

公开(公告)号：US20160014508A1

公开(公告)日：2016-01-14

申请号：US14864660

申请日：2015-09-24

Applicant: Cirrus Logic, Inc.

Inventor： Jie Su ,  Samuel Oyetunji

IPC: H04R3/00

CPC classification number: H04R3/007

Abstract: In accordance with these and other embodiments of the present disclosure, systems and methods may include a controller configured to be coupled to an audio speaker, wherein the controller receives an audio input signal, and based on a displacement transfer function associated with the audio speaker, processes the audio input signal to generate an output audio signal communicated to the audio speaker, wherein the displacement transfer function correlates an amplitude and a frequency of the audio input signal to an expected displacement of the audio speaker in response to the amplitude and the frequency of the audio input signal.

Abstract translation: 根据本公开的这些和其他实施例，系统和方法可以包括被配置为耦合到音频扬声器的控制器，其中控制器接收音频输入信号，并且基于与音频扬声器相关联的位移传递函数， 处理音频输入信号以产生传送到音频扬声器的输出音频信号，其中，位移传递函数响应于音频扬声器的幅度和频率将音频输入信号的幅度和频率与音频扬声器的预期位移相关联 音频输入信号。

公开(公告)号：US20140270223A1

公开(公告)日：2014-09-18

申请号：US14029159

申请日：2013-09-17

Applicant: Cirrus Logic, Inc.

Inventor： Ning Li ,  Antonio John Miller ,  Jon D. Hendrix ,  Jie Su ,  Jeffrey Alderson ,  Ali Abdollahzadeh Milani

IPC: H04R3/00

CPC classification number: H04R3/002 ,  G10K11/178 ,  G10K2210/1081 ,  G10K2210/3016 ,  G10K2210/3026 ,  G10K2210/3028 ,  H04R1/1083 ,  H04R2460/01

Abstract: Techniques for estimating adaptive noise canceling (ANC) performance in a personal audio device, such as a wireless telephone, provide robustness of operation by triggering corrective action when ANC performance is low, and/or by saving a state of the ANC system when ANC performance is high. An anti-noise signal is generated from a reference microphone signal and is provided to an output transducer along with program audio. A measure of ANC gain is determined by computing a ratio of a first indication of magnitude of an error microphone signal that provides a measure of the ambient sounds and program audio heard by the listener including the effects of the anti-noise, to a second indication of magnitude of the error microphone signal without the effects of the anti-noise. The ratio can be determined for different frequency bands in order to determine whether particular adaptive filters are trained properly.

Abstract translation: 用于估计诸如无线电话的个人音频设备中的自适应噪声消除（ANC）性能的技术通过在ANC性能低时通过触发纠正动作来提供鲁棒性，和/或通过在ANC性能时保存ANC系统的状态 高。 从参考麦克风信号产生抗噪声信号，并将其与节目音频一起提供给输出变换器。 ANC增益的量度通过计算提供环境声音的度量的误差麦克风信号的幅度的第一指示和包括抗噪声的影响的收听者听到的节目音频的第一指示与第二指示 的误差麦克风信号的幅度没有抗噪声的影响。 可以针对不同的频带来确定该比率，以便确定特定的自适应滤波器是否被适当地训练。

公开(公告)号：US20140254805A1

公开(公告)日：2014-09-11

申请号：US13791509

申请日：2013-03-08

Applicant: CIRRUS LOGIC, INC.

Inventor： Jie Su ,  Samuel Oyetunji

IPC: H04R3/00

CPC classification number: H04R3/007

Abstract: In accordance with these and other embodiments of the present disclosure, systems and methods may include a controller configured to be coupled to an audio speaker, wherein the controller receives an audio input signal, and based on a displacement transfer function associated with the audio speaker, processes the audio input signal to generate an output audio signal communicated to the audio speaker, wherein the displacement transfer function correlates an amplitude and a frequency of the audio input signal to an expected displacement of the audio speaker in response to the amplitude and the frequency of the audio input signal.

Abstract translation: 根据本公开的这些和其他实施例，系统和方法可以包括被配置为耦合到音频扬声器的控制器，其中控制器接收音频输入信号，并且基于与音频扬声器相关联的位移传递函数， 处理音频输入信号以产生传送到音频扬声器的输出音频信号，其中，位移传递函数响应于音频扬声器的幅度和频率将音频输入信号的幅度和频率与音频扬声器的预期位移相关联 音频输入信号。

公开(公告)号：US09602939B2

公开(公告)日：2017-03-21

申请号：US15195785

申请日：2016-06-28

Applicant: Cirrus Logic, Inc.

Inventor： Antonio John Miller ,  Jie Su

IPC: H04R29/00 ,  G06F3/16 ,  H04R3/00

Abstract: A speaker impedance may be determined by monitoring a voltage and/or current of the speaker. The calculated impedance may be used to determine whether the mobile device containing the speaker is on- or off-ear. The impedance determination may be assisted by applying a test tone low level signal to the speaker. The test tone may be inaudible to the user, but used to determine an impedance of the speaker at the frequency of the test tone. The impedance at that test tone may be used to determine whether a resonance frequency of the speaker is at a frequency corresponding to an on- or off-ear condition. The measured speaker impedance may be provided as feedback to an adaptive noise cancellation (ANC) algorithm to adjust the output at the speaker. For example, when the mobile device is removed from the user's ear, the ANC algorithm may be disabled.