首页> 外国专利> ULTRA-LOW FREQUENCY SOUND REDUCTION METHOD AND ULTRA-LOW FREQUENCY SOUND REDUCTION DEVICE

ULTRA-LOW FREQUENCY SOUND REDUCTION METHOD AND ULTRA-LOW FREQUENCY SOUND REDUCTION DEVICE

机译：超低频声音降低方法及超低频声音降低装置

页面导航

摘要
著录项
相似文献

摘要

PROBLEM TO BE SOLVED: To effectively reduce an influence of an ultra-low frequency sound on an object with simple configurations.;SOLUTION: A microphone 14 detects information related to a first ultra-low frequency sound S1. A signal processing part 16 generates a signal of a phase reverse to that of a first ultra-low frequency sound S1 on the basis of the information detected by the microphone 14. The controller 18 allows sound generation means 20 to generate a second ultra-low frequency sound S2 of a phase reverse to that of the first ultra-low frequency sound S1 which is large enough to offset the first ultra-low frequency sound S1 by driving the sound generation means 20 on the basis of the signal supplied from the signal processing part 16. The sound generation means 20 is arranged such that the first ultra-low frequency sound S1 during the transmission of the second ultra-low frequency sound S2 from a diesel engine 2A to an object 4 is oriented. The first ultra-low frequency sound S1 and the second ultra-low frequency sound S2 offset each other at a place in front of the object 4 so that the ultra-low frequency sound can be reduced.;COPYRIGHT: (C)2014,JPO&INPIT

机译：解决的问题：用简单的配置有效地减小超低频声音对物体的影响。解决方案：麦克风14检测与第一超低频声音S1有关的信息。信号处理部分16基于由麦克风14检测到的信息，产生与第一超低频声音S1的相位相反的信号。控制器18允许声音产生装置20产生第二超低频信号。与第一超低频声音S1的相位相反的频率的声音S2，该第一超低频声音S1的大小大到足以通过基于从信号处理提供的信号来驱动声音产生装置20来抵消第一超低频声音S1声音产生装置20被布置成使得在第二超低频声音S2从柴油机2A向物体4的传递期间的第一超低频声音S1被定向。第一超低频声音S1和第二超低频声音S2在物体4前方的位置相互偏移，从而可以减小超低频声音。;版权所有：（C）2014，JPO＆INPIT

著录项

公开/公告号JP2014153668A

专利类型
公开/公告日2014-08-25

原文格式PDF
申请/专利权人 FUJITA CORP;
展开▼

申请/专利号JP20130025664
发明设计人 ABE MASAYUKI;URUSHIDO YUKIO;
展开▼

申请日2013-02-13
分类号G10K11/178;E21D9/14;
国家 JP
入库时间 2022-08-21 16:18:50

相似文献

专利
外文文献
中文文献