首页> 外国专利> ANC NOISE ACTIVE CONTROL AUDIO HEAD SET PREVENTING INFLUENCE OF SATURATION OF FEEDBACK MICROPHONE SIGNAL

ANC NOISE ACTIVE CONTROL AUDIO HEAD SET PREVENTING INFLUENCE OF SATURATION OF FEEDBACK MICROPHONE SIGNAL

机译:ANC噪声有源控制音频耳机防止反馈麦克风信号饱和

摘要

PROBLEM TO BE SOLVED: To propose a new ANC noise reduction technology.;SOLUTION: A head set (HS) is configured to include an active noise control function, and have an internal ANC microphone (MP) arranged in an audio cavity, and send out a signal including an audio noise component. A digital signal processor DSP comprises: a feedback (FB) ANC branch that applies a filtering transmission function HFB2 to a signal to be sent out by the ANCMP; and means that mixes a signal of the FB branch with an audio signal M to be reproduced, and the HS comprises a movement sensor. The DSP comprises means that simultaneously analyzes a signal to be sent out by the internal MP and a signal to be sent out by the movement sensor, and verifies whether a current characteristic of these signals satisfies a set of prescribed references. In an upstream of a FBANC filter, a saturation preventive filter HFB1 is selectively switched according to a result of the verification, and filtering HEQ2 of an equalization branch of the signal M to be reproduced is changed by a similar saturation preventive filter HEQ1.;COPYRIGHT: (C)2016,JPO&INPIT
机译:解决的问题:提出一种新的ANC降噪技术。解决方案:耳机(HS)配置为包括有源噪声控制功能,并在音频腔中布置一个内部ANC麦克风(MP),然后发送排除包括音频噪声成分的信号。数字信号处理器DSP包括:反馈(FB)ANC分支,该分支将滤波传输函数H FB2 应用于要由ANCMP发送的信号;以及以及将FB分支的信号与要再现的音频信号M混合的装置,并且HS包括运动传感器。 DSP包括这样的装置,该装置同时分析要由内部MP发送的信号和要由运动传感器发送的信号,并验证这些信号的当前特性是否满足一组规定的参考。在FBANC滤波器的上游,根据验证结果选择性地切换饱和防止滤波器H FB1 ,并对信号的均衡分支的H EQ2 进行滤波。通过类似的防饱和滤波器H EQ1 来更改要复制的M。版权所有:(C)2016,JPO&INPIT

著录项

  • 公开/公告号JP2015219527A

    专利类型

  • 公开/公告日2015-12-07

    原文格式PDF

  • 申请/专利权人 PARROT;

    申请/专利号JP20150099577

  • 申请日2015-05-15

  • 分类号G10K11/178;H04R1/10;

  • 国家 JP

  • 入库时间 2022-08-21 14:43:56

相似文献

  • 专利
  • 外文文献
  • 中文文献
获取专利

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号