Robust two microphone noise suppression system
    1.
    发明授权
    Robust two microphone noise suppression system 有权
    坚固的两个麦克风噪声抑制系统

    公开(公告)号:US08046219B2

    公开(公告)日:2011-10-25

    申请号:US11874263

    申请日:2007-10-18

    IPC分类号: G10L15/20

    摘要: 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.

    摘要翻译: 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。

    Hearing aid compatibility mode switching for a mobile station
    2.
    发明授权
    Hearing aid compatibility mode switching for a mobile station 有权
    用于移动台的助听器兼容性模式切换

    公开(公告)号:US07773943B2

    公开(公告)日:2010-08-10

    申请号:US11267676

    申请日:2005-11-04

    IPC分类号: H04B5/00

    CPC分类号: H04R25/554 H04M1/6066

    摘要: 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.

    摘要翻译: 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。

    Tactile transducers and method of operating
    3.
    发明授权
    Tactile transducers and method of operating 有权
    触觉传感器和操作方法

    公开(公告)号:US07129824B2

    公开(公告)日:2006-10-31

    申请号:US10651133

    申请日:2003-08-28

    IPC分类号: H04B3/36

    摘要: A portable electronic device (100) includes a vibrating transducer having a resilient support and a first mass supported by the first resilient support forming a mechanical resonator, and an electrical circuit coupled to the first vibrating transducer to apply a drive signal. A plurality of tactile vibration transducers (130, 140) can work in unison to produce strong tactile stimulus (216, 228, 230).

    摘要翻译: 便携式电子设备(100)包括具有弹性支撑件的振动换能器和由形成机械谐振器的第一弹性支撑件支撑的第一质量,以及耦合到第一振动换能器以施加驱动信号的电路。 多个触觉振动换能器(130,140)可一起工作以产生强烈的触觉刺激(216,228,230)。