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    • 7. 发明申请
    • NOISE REDUCTION SYSTEM
    • 噪声减少系统
    • US20160284338A1
    • 2016-09-29
    • US15066112
    • 2016-03-10
    • Kabushiki Kaisha Toshiba
    • Tatsuhiko GOTOOsamu NishimuraAkihiko Enamito
    • G10K11/178
    • G10K11/178G10K11/17813G10K11/17853G10K2210/1161G10K2210/3016G10K2210/3028
    • According to one embodiment, a noise reduction system for reducing noise including impact noise repetitively generated at a time interval includes the following elements. The error signal generator generates an error signal based on the noise being detected. The delay signal generator has a time delay characteristic and delays a signal, which is generated based on the error signal, to generate a delay signal, the time delay characteristic being determined based on an imaging sequence or pre-scanning by the MRI device and corresponding to the time interval. The control filter generates the first control signal from the delay signal. The loudspeaker unit includes at least one pair of a first filter and a control loudspeaker and a transmission unit.
    • 根据一个实施例,用于降低包括在时间间隔反复产生的冲击噪声的噪声的降噪系统包括以下元件。 误差信号发生器根据检测到的噪声产生误差信号。 延迟信号发生器具有时间延迟特性,并且延迟基于误差信号产生的信号以产生延迟信号,该延时特性是基于成像序列确定的,或者由MRI装置进行预扫描和对应的 到时间间隔。 控制滤波器从延迟信号产生第一控制信号。 扬声器单元包括至少一对第一滤波器和控制扬声器以及传输单元。