公开(公告)号：US08553899B2

公开(公告)日：2013-10-08

申请号：US12336460

申请日：2008-12-16

Applicant: Arthur Salvetti ,  Harikrishna P. Natarajan ,  Jon S. Kindred

Inventor： Arthur Salvetti ,  Harikrishna P. Natarajan ,  Jon S. Kindred

IPC: A61F11/06 ,  H04R29/00 ,  H04R3/00 ,  H04R25/00

CPC classification number: H04M9/082 ,  H04R3/02 ,  H04R25/453

Abstract: Method and apparatus for entrainment containment in digital filters using output phase modulation. Phase change is gradually introduced into the acoustic feedback canceller loop to avoid entrainment of the feedback canceller filter. Various embodiments employing different output phase modulation approaches are set forth and time and frequency domain examples are provided. Additional method and apparatus can be found in the specification and as provided by the attached claims and their equivalents.

公开(公告)号：US09729976B2

公开(公告)日：2017-08-08

申请号：US12644932

申请日：2009-12-22

Applicant: Harikrishna P. Natarajan

Inventor： Harikrishna P. Natarajan

IPC: H04R29/00 ,  H04R25/00

CPC classification number: H04R25/453 ,  H04R25/305 ,  H04R25/558 ,  H04R2225/39 ,  H04R2225/41

Abstract: The present disclosure relates to tracking of acoustic feedback events of a hearing assistance device, such as a hearing aid. Information about the acoustic feedback events is stored for analysis. Such information is useful for programming acoustic feedback cancellers and other parameters of a hearing assistance device.

公开(公告)号：US08917891B2

公开(公告)日：2014-12-23

申请号：US13085033

申请日：2011-04-12

Applicant: Harikrishna P. Natarajan

Inventor： Harikrishna P. Natarajan

IPC: H04R25/00

CPC classification number: H04R25/453 ,  H04R25/505

Abstract: Disclosed herein, among other things, are methods and apparatus for allocating feedback cancellation resources for improved acoustic feedback cancellation for hearing assistance devices. In various embodiments, a hearing assistance device includes a microphone and a processor configured to receive signals from the microphone and process them according to a plurality of processing blocks. The processor is adapted to include an event detector that can provide detection of an event and an output to adjust one or more processing blocks of the overall process to more efficiently use resources of the processor for the event detected, in various embodiments.

Abstract translation: 这里公开了用于分配反馈消除资源以用于改善用于听力辅助装置的声反馈消除的方法和装置。 在各种实施例中，听力辅助装置包括麦克风和配置成从麦克风接收信号并根据多个处理块进行处理的处理器。 处理器适于包括事件检测器，其可以提供对事件的检测和输出，以调整整个过程的一个或多个处理块，以在各种实施例中更有效地使用处理器的资源来检测所检测到的事件。

公开(公告)号：US20110091049A1

公开(公告)日：2011-04-21

申请号：US12980720

申请日：2010-12-29

Applicant: Arthur Salvetti ,  Harikrishna P. Natarajan ,  Jon S. Kindred

Inventor： Arthur Salvetti ,  Harikrishna P. Natarajan ,  Jon S. Kindred

IPC: H04B15/02

CPC classification number: H04R25/45 ,  H04M9/082 ,  H04R3/002 ,  H04R3/02 ,  H04R25/453

Abstract: Method and apparatus for entrainment containment in digital filters using output phase modulation. Phase change is gradually introduced into the acoustic feedback canceller loop to avoid entrainment of the feedback canceller filter. Various embodiments employing different output phase modulation approaches are set forth and time and frequency domain examples are provided. Additional method and apparatus can be found in the specification and as provided by the attached claims and their equivalents.

Abstract translation: 用于使用输出相位调制的数字滤波器中夹带容纳的方法和装置。 相位变化逐渐被引入到声反馈消除器回路中以避免夹带反馈消除器滤波器。 阐述采用不同输出相位调制方法的各种实施例，并提供时域和频域示例。 附加的方法和装置可以在说明书中找到并且由所附权利要求及其等同物提供。

公开(公告)号：US20090316922A1

公开(公告)日：2009-12-24

申请号：US12488129

申请日：2009-06-19

Applicant: Ivo Merks ,  Harikrishna P. Natarajan

Inventor： Ivo Merks ,  Harikrishna P. Natarajan

IPC: H04R25/00

CPC classification number: H04R25/453 ,  H04R25/30 ,  H04R25/70

Abstract: This disclosure relates to measurement of maximum stable gain of a hearing assistance device, including but not limited to hearing aids, as a function of frequency. In various approaches an adaptive filter with a variable step size is used to determine maximum stable gain as a function of frequency. In various approaches, the determination is done in process steps performed by the hearing assistance device. In various approaches, the determination is done in process steps performed by the hearing assistance device and by a host computer.

Abstract translation: 本公开涉及作为频率的函数的助听设备的最大稳定增益的测量，包括但不限于助听器。 在各种方法中，使用具有可变步长的自适应滤波器来确定作为频率的函数的最大稳定增益。 在各种方法中，在由助听装置执行的处理步骤中进行确定。 在各种方法中，在由助听装置和主机执行的处理步骤中进行确定。

公开(公告)号：US20090175474A1

公开(公告)日：2009-07-09

申请号：US12336460

申请日：2008-12-16

Applicant: Arthur Salvetti ,  Harikrishna P. Natarajan ,  Jon S. Kindred

Inventor： Arthur Salvetti ,  Harikrishna P. Natarajan ,  Jon S. Kindred

IPC: H04R25/00

CPC classification number: H04M9/082 ,  H04R3/02 ,  H04R25/453

Abstract: Method and apparatus for entrainment containment in digital filters using output phase modulation. Phase change is gradually introduced into the acoustic feedback canceller loop to avoid entrainment of the feedback canceller filter. Various embodiments employing different output phase modulation approaches are set forth and time and frequency domain examples are provided. Additional method and apparatus can be found in the specification and as provided by the attached claims and their equivalents.

Abstract translation: 用于使用输出相位调制的数字滤波器中夹带容纳的方法和装置。 相位变化逐渐被引入到声反馈消除器回路中以避免夹带反馈消除器滤波器。 阐述采用不同输出相位调制方法的各种实施例，并提供时域和频域示例。 附加的方法和装置可以在说明书中找到并且由所附权利要求及其等同物提供。

公开(公告)号：US20080130927A1

公开(公告)日：2008-06-05

申请号：US11877567

申请日：2007-10-23

Applicant: Lalin Theverapperuma ,  Harikrishna P. Natarajan ,  Arthur Salvetti ,  Jon S. Kindred

Inventor： Lalin Theverapperuma ,  Harikrishna P. Natarajan ,  Arthur Salvetti ,  Jon S. Kindred

IPC: H04R25/00

CPC classification number: H04R25/453 ,  H04R2460/01

Abstract: A method of signal processing an input signal in a hearing aid to avoid entrainment, the hearing aid including a receiver and a microphone, the method comprising using an adaptive filter to measure an acoustic feedback path from the receiver to the microphone and adjusting an adaptation rate of the adaptive filter using an output from a filter having an autoregressive portion, the output derived at least in part from a ratio of a predictive estimate of the input signal to a difference of the predictive estimate and the input signal.

Abstract translation: 一种信号处理助听器中的输入信号以避免夹带的方法，所述助听器包括接收器和麦克风，所述方法包括使用自适应滤波器来测量从接收器到麦克风的声反馈路径并调整适应速率 使用来自具有自回归部分的滤波器的输出的自适应滤波器，所述输出至少部分地从所述输入信号的预测估计与所述预测估计的差和所述输入信号的比率导出。

公开(公告)号：US08737655B2

公开(公告)日：2014-05-27

申请号：US12488129

申请日：2009-06-19

Applicant: Ivo Merks ,  Harikrishna P. Natarajan

Inventor： Ivo Merks ,  Harikrishna P. Natarajan

IPC: H04R25/00

CPC classification number: H04R25/453 ,  H04R25/30 ,  H04R25/70

Abstract: This disclosure relates to measurement of maximum stable gain of a hearing assistance device, including but not limited to hearing aids, as a function of frequency. In various approaches an adaptive filter with a variable step size is used to determine maximum stable gain as a function of frequency. In various approaches, the determination is done in process steps performed by the hearing assistance device. In various approaches, the determination is done in process steps performed by the hearing assistance device and by a host computer.

Abstract translation: 本公开涉及作为频率的函数的助听设备的最大稳定增益的测量，包括但不限于助听器。 在各种方法中，使用具有可变步长的自适应滤波器来确定作为频率的函数的最大稳定增益。 在各种方法中，在由助听装置执行的处理步骤中进行确定。 在各种方法中，在由助听装置和主机执行的处理步骤中进行确定。

公开(公告)号：US08681999B2

公开(公告)日：2014-03-25

申请号：US11877567

申请日：2007-10-23

Applicant: Lalin Theverapperuma ,  Harikrishna P. Natarajan ,  Arthur Salvetti ,  Jon S. Kindred

Inventor： Lalin Theverapperuma ,  Harikrishna P. Natarajan ,  Arthur Salvetti ,  Jon S. Kindred

IPC: H04B3/20

CPC classification number: H04R25/453 ,  H04R2460/01

Abstract: A method of signal processing an input signal in a hearing aid to avoid entrainment, the hearing aid including a receiver and a microphone, the method comprising using an adaptive filter to measure an acoustic feedback path from the receiver to the microphone and adjusting an adaptation rate of the adaptive filter using an output from a filter having an autoregressive portion, the output derived at least in part from a ratio of a predictive estimate of the input signal to a difference of the predictive estimate and the input signal.

Abstract translation: 一种信号处理助听器中的输入信号以避免夹带的方法，所述助听器包括接收器和麦克风，所述方法包括使用自适应滤波器来测量从接收器到麦克风的声反馈路径并调整适应速率 使用来自具有自回归部分的滤波器的输出的自适应滤波器，所述输出至少部分地从所述输入信号的预测估计与所述预测估计的差和所述输入信号的比率导出。

公开(公告)号：US20110249846A1

公开(公告)日：2011-10-13

申请号：US13085033

申请日：2011-04-12

Applicant: Harikrishna P. Natarajan

Inventor： Harikrishna P. Natarajan

IPC: H04R25/00

CPC classification number: H04R25/453 ,  H04R25/505

Abstract: Disclosed herein, among other things, are methods and apparatus for allocating feedback cancellation resources for improved acoustic feedback cancellation for hearing assistance devices. In various embodiments, a hearing assistance device includes a microphone and a processor configured to receive signals from the microphone and process them according to a plurality of processing blocks. The processor is adapted to include an event detector that can provide detection of an event and an output to adjust one or more processing blocks of the overall process to more efficiently use resources of the processor for the event detected, in various embodiments.

Abstract translation: 这里公开了用于分配反馈消除资源以用于改善用于听力辅助装置的声反馈消除的方法和装置。 在各种实施例中，听力辅助装置包括麦克风和配置成从麦克风接收信号并根据多个处理块进行处理的处理器。 处理器适于包括事件检测器，其可以提供对事件的检测和输出，以调整整个过程的一个或多个处理块，以在各种实施例中更有效地使用处理器的资源来检测所检测到的事件。