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    • 2. 发明授权
    • Hearing aid compatibility mode switching for a mobile station
    • 用于移动台的助听器兼容性模式切换
    • US07773943B2
    • 2010-08-10
    • US11267676
    • 2005-11-04
    • Robert A. ZurekScott K. IsabelleScott D. KelleyAlfred B. Wieczorek
    • Robert A. ZurekScott K. IsabelleScott D. KelleyAlfred B. Wieczorek
    • H04B5/00
    • H04R25/554H04M1/6066
    • A mobile station (100) that includes a processor (212) that selectively disables at least one station component to reduce electromagnetic noise generated by the station in the frequency range below 20 kHz when the mobile station is operated in the hearing aid compatible mode. The component can be, for example, a display (204), a light (206) or a wireless interface (208). The processor also can optimize characteristics of audio signals transmitted from the mobile station to the hearing aid for reproduction by the hearing aid. For instance, the processor can selectively adjust filter parameters (216) and/or a signal gain (218) applied to audio signals. A user interface (220) having a soft-key can be provided to cycle through various HAC options.
    • 一种移动台(100),其包括处理器(212),当所述移动台在助听器兼容模式下操作时,所述处理器选择性地禁用至少一个站组件以减少所述站在20kHz以下的频率范围内产生的电磁噪声。 该组件可以是例如显示器(204),光(206)或无线接口(208)。 处理器还可以优化从移动台发送到助听器的音频信号的特性,以便由助听器再现。 例如,处理器可以选择性地调整应用于音频信号的滤波器参数(216)和/或信号增益(218)。 可以提供具有软键的用户界面(220)以循环通过各种HAC选项。
    • 3. 发明授权
    • Robust two microphone noise suppression system
    • 坚固的两个麦克风噪声抑制系统
    • US08046219B2
    • 2011-10-25
    • US11874263
    • 2007-10-18
    • Robert A. ZurekJeffrey M. AxelrodJoel A. ClarkHolly L. FrancoisScott K. IsabelleDavid J. PearceJames A. Rex
    • Robert A. ZurekJeffrey M. AxelrodJoel A. ClarkHolly L. FrancoisScott K. IsabelleDavid J. PearceJames A. Rex
    • G10L15/20
    • G10L21/0208G10L21/0272G10L2021/02165
    • A system, method, and apparatus for separating speech signal from a noisy acoustic environment. The separation process may include directional filtering, blind source separation, and dual input spectral subtraction noise suppressor. The input channels may include two omnidirectional microphones whose output is processed using phase delay filtering to form speech and noise beamforms. Further, the beamforms may be frequency corrected. The omnidirectional microphones generate one channel that is substantially only noise, and another channel that is a combination of noise and speech. A blind source separation algorithm augments the directional separation through statistical techniques. The noise signal and speech signal are then used to set process characteristics at a dual input noise spectral subtraction suppressor (DINS) to efficiently reduce or eliminate the noise component. In this way, the noise is effectively removed from the combination signal to generate a good qualify speech signal.
    • 一种用于从噪声声环境分离语音信号的系统,方法和装置。 分离过程可以包括方向滤波,盲源分离和双输入频谱减法噪声抑制器。 输入通道可以包括两个全向麦克风,其输出使用相位延迟滤波处理以形成语音和噪声波束形式。 此外,波束形状可以被频率校正。 全向麦克风产生基本上只有噪声的一个通道,以及作为噪声和语音的组合的另一个通道。 盲源分离算法通过统计技术增强了方向分离。 然后,噪声信号和语音信号用于设置双输入噪声频谱减法抑制器(DINS)的过程特性,以有效降低或消除噪声分量。 以这种方式,有效地从组合信号中去除噪声以产生良好的合格语音信号。