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    • 52. 发明授权
    • Audio noise cancelling
    • 音频噪声消除
    • US09165549B2
    • 2015-10-20
    • US13319532
    • 2010-05-04
    • Adriaan Johan Van Leest
    • Adriaan Johan Van Leest
    • G10K11/16G10K11/178H04R1/10H04R3/02
    • G10K11/178G10K11/17833G10K11/17875G10K2210/1081G10K2210/3026G10K2210/3028G10K2210/503G10K2210/51H04R1/1083H04R3/02
    • A noise canceling system comprises a microphone (103) for generating a captured signal representing sound in an audio environment and a sound transducer (101) for radiating a sound canceling audio signal in the audio environment. A feedback path (105, 107, 109, 111, 113) exists from the microphone (103) to the sound transducer (101) and comprises a feedback filter (109). A tone processor (119) determines a tone component characteristic for a tone component of a feedback signal of the feedback path (105, 107, 109, 111, 113) and an adaptation processor (121) adapts the feedback path in response to the tone component characteristic. The invention allows detection of the onset of instability and dynamic compensation to mitigate or prevent such instability. Accordingly increased design freedom for the feedback filter is achieved resulting in improved noise cancellation.
    • 噪声消除系统包括用于产生表示音频环境中的声音的捕获信号的麦克风(103)和用于在音频环境中辐射声音消除音频信号的声音换能器(101)。 从麦克风(103)到声音换能器(101)存在反馈路径(105,107,109,111,113),并且包括反馈滤波器(109)。 音调处理器(119)确定反馈路径(105,107,109,111,113)的反馈信号的色调分量的色调分量特性,并且自适应处理器(121)响应于色调适应反馈路径 组件特性。 本发明允许检测不稳定性的发生和动态补偿以减轻或防止这种不稳定性。 因此,实现了反馈滤波器的增加的设计自由度,从而导致改进的噪声消除。
    • 53. 发明申请
    • AUDIO NOISE CANCELLING
    • 音频噪音消除
    • US20120057720A1
    • 2012-03-08
    • US13319532
    • 2010-05-04
    • Adriaan Johan Van Leest
    • Adriaan Johan Van Leest
    • G10K11/16
    • G10K11/178G10K11/17833G10K11/17875G10K2210/1081G10K2210/3026G10K2210/3028G10K2210/503G10K2210/51H04R1/1083H04R3/02
    • A noise canceling system comprises a microphone (103) for generating a captured signal representing sound in an audio environment and a sound transducer (101) for radiating a sound canceling audio signal in the audio environment. A feed-back path (105, 107, 109, 111, 113) exists from the microphone (103) to the sound transducer (101) and comprises a feedback filter (109). A tone processor (119) determines a tone component characteristic for a tone component of a feedback signal of the feedback path (105, 107, 109, 111, 113) and an adaptation processor (121) adapts the feedback path in response to the tone component characteristic. The invention allows detection of the onset of instability and dynamic compensation to mitigate or prevent such instability. Accordingly increased design freedom for the feedback filter is achieved resulting in improved noise cancellation.
    • 噪声消除系统包括用于产生表示音频环境中的声音的捕获信号的麦克风(103)和用于在音频环境中辐射声音消除音频信号的声音换能器(101)。 从麦克风(103)到声音换能器(101)存在反馈路径(105,107,109,111,113),并且包括反馈滤波器(109)。 音调处理器(119)确定反馈路径(105,107,109,111,113)的反馈信号的色调分量的色调分量特性,并且自适应处理器(121)响应于色调适应反馈路径 组件特性。 本发明允许检测不稳定性的发生和动态补偿以减轻或防止这种不稳定性。 因此,实现了反馈滤波器的增加的设计自由度,从而导致改进的噪声消除。
    • 54. 发明申请
    • NOISE CANCELLATION HELMET, MOTOR VEHICLE SYSTEM INCLUDING THE NOISE CANCELLATION HELMET, AND METHOD OF CANCELING NOISE IN HELMET
    • 噪声消除护耳机,包括噪声消除器的电动车系统和消除噪音的方法
    • US20070033029A1
    • 2007-02-08
    • US11420067
    • 2006-05-24
    • Atsushi SAKAWAKI
    • Atsushi SAKAWAKI
    • G10L15/20
    • G10L21/0208G10K11/17875G10K2210/1081G10K2210/3025
    • A noise cancellation helmet includes a noise detecting unit which detects noise in a helmet body, a sound outputting unit which outputs a control sound for canceling the detected noise, a control signal generating unit which processes an output signal of the noise detecting unit through computation to generate a control signal for the control sound and applies the control signal to the sound outputting unit, an utterance detecting unit which detects utterance of a wearer, an utterance absent period gain adjusting unit which adjusts a gain of the control signal generating unit in an utterance absent period, an utterance absent period gain storing unit which stores a gain set by the utterance absent period gain adjusting unit immediately before the detection of the utterance, and an utterance present period gain adjusting unit which adjusts the gain of the control signal generating unit on the basis of the gain stored in the utterance absent period gain storing unit in an utterance present period.
    • 噪声消除头盔包括检测头盔身体中的噪声的噪声检测单元,输出用于消除检测到的噪声的控制声音的声音输出单元,通过计算处理噪声检测单元的输出信号的控制信号生成单元, 生成用于控制声音的控制信号,并将控制信号施加到声音输出单元,发声检测单元,其检测佩戴者的发音;无发声的周期增益调整单元,用于以发音方式调节控制信号产生单元的增益 无声期增益存储单元,其存储由紧接在发音检测之前的无发声期增益调整单元设定的增益;以及发声现在周期增益调整单元,其将控制信号生成单元的增益调整为 存储在话语中的增益存储单元中的增益的基础 nt期间
    • 55. 发明申请
    • Noise cancellation system for active headsets
    • 主动耳机的噪音消除系统
    • US20010053228A1
    • 2001-12-20
    • US09911126
    • 2001-07-23
    • Owen Jones
    • A61F011/06G10K011/16H03B029/00
    • H04R1/1083A61F2011/145G10K11/1785G10K11/17875G10K2210/1081G10K2210/126G10K2210/321H04R1/1041H04R5/033
    • An active headset system is provided with compatibility with existing socket configurations in a way that minimizes the number of electrical connections. The number of connections between the active headset and the remote noise cancellation circuitry is reduced through the use of a common contact, having a controlled impedance, that serves as an input connection to corresponding terminals of the two earphones of the active headset. According to another aspect of the present invention, the transients associated with plugging in or unplugging stereo jack plugs or up to a seven pin connector into an active headset may be overcome by a transient detector in the noise cancellation circuitry. Yet another aspect of the present invention concerns the powering of the noise cancellation circuitry whether the noise cancellation circuitry is placed inside the active headset or at least partially internal to a remote external device.
    • 主动耳机系统与现有的插座配置兼容,以最小化电连接数量。 主动耳机与远程噪声消除电路之间的连接数量通过使用具有受控阻抗的公共接点来减少,其作为与主动耳机的两个耳机的相应终端的输入连接。 根据本发明的另一方面,可以通过噪声消除电路中的瞬态检测器克服与插入或拔出立体声插孔或至多七针连接器相关联的瞬变。 本发明的另一方面涉及噪声消除电路的供电,无论噪声消除电路是放置在有源耳机内还是至少部分地在远程外部设备内部。