公开(公告)号：US20180102124A1

公开(公告)日：2018-04-12

申请号：US15289289

申请日：2016-10-10

申请人： International Business Machines Corporation

发明人： Zhan Peng Huo ,  Yang Liang ,  Shu Jun Tang ,  Ying Zhao Yan ,  Ting Yin ,  Hui Hui Zhao

IPC分类号： G10K11/178

CPC分类号： G10K11/178 ,  G10K11/17823 ,  G10K11/1785 ,  G10K2210/11 ,  G10K2210/3016 ,  G10K2210/3044

摘要： A noise source emits an acoustic noise wave with a noise frequency corresponding to an attribute of a control-status signal associated with the noise source. A method to reduce the noise comprises generating, based on the noise frequency corresponding to the attribute, an anti-noise signal having the noise frequency. The method further comprises phase-shifting the anti-noise signal to output a phase-shifted anti-noise signal that can be used to generate a noise-cancelling acoustic wave. The method can include aligning the first anti-noise signal to be in-phase with the acoustic noise wave. An anti-noise apparatus to implement the method includes an anti-noise generator, to generate the anti-noise signal, and a phase shifter to generate and output the phase-shifted anti-noise signal. The anti-noise apparatus can include a phase detector and phase alignment element to align the anti-noise signal to be in-phase with the acoustic noise wave.

公开(公告)号：US10083683B2

公开(公告)日：2018-09-25

申请号：US15289289

申请日：2016-10-10

申请人： International Business Machines Corporation

发明人： Zhan Peng Huo ,  Yang Liang ,  Shu Jun Tang ,  Ying Zhao Yan ,  Ting Yin ,  Hui Hui Zhao

IPC分类号： G10K11/16 ,  G10K11/178

CPC分类号： G10K11/178 ,  G10K11/17823 ,  G10K11/1785 ,  G10K2210/11 ,  G10K2210/3016 ,  G10K2210/30231 ,  G10K2210/3025 ,  G10K2210/3044

摘要： A noise source emits an acoustic noise wave with a noise frequency corresponding to an attribute of a control-status signal associated with the noise source. A method to reduce the noise comprises generating, based on the noise frequency corresponding to the attribute, an anti-noise signal having the noise frequency. The method further comprises phase-shifting the anti-noise signal to output a phase-shifted anti-noise signal that can be used to generate a noise-cancelling acoustic wave. The method can include aligning the first anti-noise signal to be in-phase with the acoustic noise wave. An anti-noise apparatus to implement the method includes an anti-noise generator, to generate the anti-noise signal, and a phase shifter to generate and output the phase-shifted anti-noise signal. The anti-noise apparatus can include a phase detector and phase alignment element to align the anti-noise signal to be in-phase with the acoustic noise wave.