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12 条记录 (耗时 0.022 秒)

    Band-limited adaptive feedback canceller for hearing aids
    1.
    发明授权
    Band-limited adaptive feedback canceller for hearing aids 有权
    用于助听器的带限自适应反馈消除器

    公开(公告)号：US07965853B2

    公开(公告)日：2011-06-21

    申请号：US11935142

    申请日：2007-11-05

    申请人： Shawn X. Gao ,  Sigfrid D. Soli ,  Hsiang Feg Chi

    发明人： Shawn X. Gao ,  Sigfrid D. Soli ,  Hsiang Feg Chi

    IPC分类号： H04R25/00

    CPC分类号： H04R25/453 ,  H03H21/0012 ,  H03H2021/0078 ,  H04R25/505 ,  H04R2430/03

    摘要： An improved method for adaptively cancelling acoustic feedback in hearing aids and other audio amplification devices. Feedback cancellation is limited to a frequency band that encompasses all unstable frequencies. By limiting the bandwidth of the feedback cancellation signal, the distortion due to the adaptive filter is minimized and limited only to the unstable feedback regions. A relatively simple signal processing algorithm is used to produce highly effective results with minimal signal distortion.

    摘要翻译： 一种用于自适应地消除助听器和其他音频放大装置中的声反馈的改进方法。 反馈消除限于包含所有不稳定频率的频带。 通过限制反馈消除信号的带宽，由于自适应滤波器引起的失真被最小化并且仅限于不稳定的反馈区域。 使用相对简单的信号处理算法来产生具有最小信号失真的高效结果。

    Method of measuring and preventing unstable feedback in hearing aids
    2.
    发明授权
    Method of measuring and preventing unstable feedback in hearing aids 失效
    测量和防止助听器不稳定反馈的方法

    公开(公告)号：US6134329A

    公开(公告)日：2000-10-17

    申请号：US926320

    申请日：1997-09-05

    申请人： Shawn X. Gao ,  Sigfrid D. Soli

    发明人： Shawn X. Gao ,  Sigfrid D. Soli

    IPC分类号： H04R25/00 ,  H04R29/00

    CPC分类号： H04R25/453 ,  H04R25/70

    摘要： A "true" hearing aid transfer function, including feedback, is derived from measurements taken with the hearing aid fitted in a patient's ear canal. Closed loop transfer functions are calculated at several hearing aid gains without opening the internal circuitry of the hearing aid using a time domain Weiner optimal filter model. The combined open loop transfer function of the hearing aid and feedback path is then calculated. Once the open loop transfer function is known, potentially unstable frequencies are identified and maximum hearing aid gain settings are determined. The hearing aid transfer function and transfer function of feedback path are also calculated from the closed loop transfer function measurements.

    摘要翻译： 包括反馈在内的“真实”助听器传递功能来源于使用安装在患者耳道中的助听器进行的测量。 闭环传递函数以几种助听器增益计算，而不使用时域维纳最优滤波器模型打开助听器的内部电路。 然后计算助听器和反馈路径的组合开环传递函数。 一旦已知开环传递函数，就会识别潜在的不稳定频率，并确定最大助听器增益设置。 反馈路径的助听器传递函数和传递函数也由闭环传递函数测量得出。

    Band-limited adaptive feedback canceller for hearing aids
    4.
    发明授权
    Band-limited adaptive feedback canceller for hearing aids 有权
    用于助听器的带限自适应反馈消除器

    公开(公告)号：US07292699B2

    公开(公告)日：2007-11-06

    申请号：US11089399

    申请日：2005-03-23

    申请人： Shawn X. Gao ,  Sigfrid D. Soli ,  Hsiang-Feg Chi

    发明人： Shawn X. Gao ,  Sigfrid D. Soli ,  Hsiang-Feg Chi

    IPC分类号： H04R25/00

    CPC分类号： H04R25/453 ,  H03H21/0012 ,  H03H2021/0078 ,  H04R25/505 ,  H04R2430/03

    摘要： An improved method for adaptively cancelling acoustic feedback in hearing aids and other audio amplification devices. Feedback cancellation is limited to a frequency band that encompasses all unstable frequencies. By limiting the bandwidth of the feedback cancellation signal, the distortion due to the adaptive filter is minimized and limited only to the unstable feedback regions. A relatively simple signal processing algorithm is used to produce highly effective results with minimal signal distortion.

    摘要翻译： 一种用于自适应地消除助听器和其他音频放大装置中的声反馈的改进方法。 反馈消除限于包含所有不稳定频率的频带。 通过限制反馈消除信号的带宽，由于自适应滤波器引起的失真被最小化并且仅限于不稳定的反馈区域。 使用相对简单的信号处理算法来产生具有最小信号失真的高效结果。

    Pressure-regulating ear plug
    6.
    发明授权
    Pressure-regulating ear plug 失效
    调压耳塞

    公开(公告)号：US5755234A

    公开(公告)日：1998-05-26

    申请号：US560863

    申请日：1995-11-20

    申请人： J. Phil Mobley ,  Chaoying Zhang ,  Sigfrid D. Soli ,  Chris Johnson ,  Drew O'Connell

    发明人： J. Phil Mobley ,  Chaoying Zhang ,  Sigfrid D. Soli ,  Chris Johnson ,  Drew O'Connell

    IPC分类号： A61F11/06 ,  A61F11/08

    CPC分类号： A61F11/08 ,  A61F2011/085

    摘要： A pressure regulating ear plug for regulating the rate of change of pressure inside an ear to minimize the pressure differential between the middle ear and a volume of the external ear cavity adjacent the ear drum is made of an ear plug adapted to fit tightly within the external ear cavity with no or minimal air leakage, and disposed within the ear plug is a pressure regulator with a slow leak rate. The pressure regulator is preferably made of a porous ceramic material.

    摘要翻译： 用于调节耳朵内部的压力变化率的压力调节耳塞，以使中耳与耳鼓附近的外耳腔体积之间的压力差最小化，该耳塞由适于紧密配合在外部的耳塞 没有或最小的空气泄漏的耳腔，并且设置在耳塞内是具有缓慢泄漏速率的压力调节器。 压力调节器优选由多孔陶瓷材料制成。

    Auditory prosthesis, noise suppression apparatus and feedback suppression apparatus having focused adaptive filtering
    7.
    发明授权
    Auditory prosthesis, noise suppression apparatus and feedback suppression apparatus having focused adaptive filtering 失效
    听觉假体，噪声抑制装置和具有聚焦自适应滤波的反馈抑制装置

    公开(公告)号：US5402496A

    公开(公告)日：1995-03-28

    申请号：US912886

    申请日：1992-07-13

    申请人： Sigfrid D. Soli ,  Kevin M. Buckley ,  Gregory P. Widin

    发明人： Sigfrid D. Soli ,  Kevin M. Buckley ,  Gregory P. Widin

    IPC分类号： H03H21/00 ,  G10L21/00 ,  G10L21/02 ,  H03H17/02 ,  H04B1/10 ,  H04B3/04 ,  H04R3/02 ,  H04R25/00 ,  H04B15/00

    CPC分类号： H04R25/453 ,  G10K11/1782 ,  G10K2210/1081 ,  G10K2210/3026 ,  G10K2210/3028 ,  G10L2021/065 ,  G10L21/0208 ,  H04R25/505

    摘要： A noise and feedback suppression apparatus processes an audio input signal having both a desired component and an undesired component. When implemented so as to effect noise cancellation, the apparatus includes a first filter operatively coupled to the input signal. The first filter generates a focused reference signal by selectively passing an audio spectrum of the input signal which primarily contains the undesired component. The reference signal is supplied to an adaptive filter disposed to filter the input signal so as to provide an adaptive filter output signal. A combining network subtracts the adaptive filter output signal from the input signal to create an error signal. The noise suppression apparatus further includes a second filter for selectively passing to the adaptive filter an audio spectrum of the error signal substantially encompassing the spectrum of the undesired component of the input signal. This cancellation effectively removes the undesired component from the input signal without substantially affecting the desired component of the input signal. When the present apparatus is implemented so as to suppress feedback the adaptive filter output signal is employed to cancel a feedback component from the input signal.

    摘要翻译： 噪声和反馈抑制装置处理具有期望分量和不期望分量的音频输入信号。 当实现以实现噪声消除时，该装置包括可操作地耦合到输入信号的第一滤波器。 第一滤波器通过选择性地传送主要包含不期望的分量的输入信号的音频频谱来产生聚焦参考信号。 参考信号被提供给自适应滤波器，其被设置为对输入信号进行滤波，以便提供自适应滤波器输出信号。 组合网络从输入信号中减去自适应滤波器输出信号以产生误差信号。 噪声抑制装置还包括第二滤波器，用于选择性地将自适应滤波器传送到基本上包含输入信号的不期望分量的频谱的误差信号的音频频谱。 该消除有效地从输入信号中去除了不期望的分量，而基本上不影响输入信号的期望分量。 当实现本装置以抑制反馈时，采用自适应滤波器输出信号来从输入信号中消除反馈分量。

    Method of signal processing for maintaining directional hearing with hearing aids
    8.
    发明授权
    Method of signal processing for maintaining directional hearing with hearing aids 失效
    使用助听器维持定向听力的信号处理方法

    公开(公告)号：US5325436A

    公开(公告)日：1994-06-28

    申请号：US85652

    申请日：1993-06-30

    申请人： Sigfrid D. Soli ,  Sriram Jayaraman ,  Shawn Gao ,  Jean Sullivan

    发明人： Sigfrid D. Soli ,  Sriram Jayaraman ,  Shawn Gao ,  Jean Sullivan

    IPC分类号： H04R5/027 ,  H04R25/00 ,  H04R29/00 ,  H04R5/00

    CPC分类号： H04R25/70 ,  H04R5/027 ,  H04R25/505 ,  H04S2420/01

    摘要： The insertion effects of hearing aids are determined and compensated to restore the ability to have directional hearing in individuals wearing hearing aids. In one aspect a method involves finding the ratio of the unaided head related transfer function to the aided head related transfer function and then designing a hearing aid filter that is the inverse of that derived insertion effect, thereby restoring the ability to hear interaural differences in aided systems both in level and in time of arrival to improve hearing in the presence of noise. The insertion effects can be derived either through frequency domain analyses, using the above-mentioned transfer function calculations and measurements, or in another aspect through time domain analyses, using optimal filter calculations and measurement obtained using a successive data acquisition system that is subsequently time aligned by recording trigger pulses with the data.

    摘要翻译： 确定和补偿助听器的插入效应，以恢复佩戴助听器的人员进行定向听力的能力。 在一个方面，一种方法包括找到无辅助头部相关传递函数与辅助头部相关传递函数的比率，然后设计与该导出插入效应相反的助听器滤波器，从而恢复听力辅助 系统在水平和时间到达，以改善在有噪音的情况下的听力。 插入效应可以通过频域分析，使用上述传递函数计算和测量，或在另一方面通过时域分析，使用最后的滤波器计算和使用随后时间对准的连续数据采集系统获得的测量来推导 通过记录具有数据的触发脉冲。

    Signal processor for and an auditory prosthesis utilizing channel dominance
    9.
    发明授权
    Signal processor for and an auditory prosthesis utilizing channel dominance 失效
    信号处理器和利用信道优势的听觉假体

    公开(公告)号：US4813417A

    公开(公告)日：1989-03-21

    申请号：US25524

    申请日：1987-03-13

    申请人： Sigfrid D. Soli ,  Christopher van den Honert

    发明人： Sigfrid D. Soli ,  Christopher van den Honert

    IPC分类号： A61F11/00 ,  A61F11/04 ,  A61N1/36 ,  G09B21/00 ,  H04R25/00 ,  A61N1/00

    CPC分类号： H04R25/505 ,  A61F11/04 ,  A61N1/36032 ,  G09B21/009 ,  H04R2430/03 ,  H04R25/356

    摘要： A multichannel signal processor for and an auditory prostheses utilizing such a signal processor having a plurality of filters each passing a different center frequency providing a set of filtered signals representative of the auditory content of the electrical input signal relative to its respective center frequency. A plurality of gating mechanisms individually coupled to the filter signals pass an output signal at a level above the perceptual level of the person when the filtered signal is above a predetermined level. The predetermined level is individually determined such that the output is past above the perceptual level only when the level of the filtered signal to which the gating means is coupled is likely to be among the larges of the filtered signals of all of the plurality of filters. Thus the multichannel signal processor in auditory prosthesis can have a combined stimulated signal which contains some, but not all, channels, namely those channels whose amplitude of signal is likely to rank among the highest compared to the amplitude of the remaining channels. In a preferred embodiment, such a channel dominant signal processor will help preserve periodicities created by sharply tuned band pass filters.