AMBIENT NOISE-REDUCTION CONTROL SYSTEM
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IENT NOISE-REDUCTION CONTROL SY ST EM
发明人：SIBBALD, Alastair 申请号：EP07732160.2 申请日：20070328 公开号：EP2002687A1 公开日：20081217
摘要：The invention provides a noise reduction control system for an ear-worn speaker-carrying device (“ESD”). The system is configured to sense ambient noise and to develop electrical signals which can be used to reduce the amount of said ambient noise audible to a wearer of the ESD. The system sets a plurality of predetermined and discrete noise reduction levels and automatically responds to at least one controlling event, outside the control of the wearer, to set the degree of noise reduction to one of those discrete levels. Typically, the system inverts and filters the electrical signals relating to ambient noise and feeds the inverted and filtered signals to the speaker of the ESD in time for the speaker to generate sounds capable of interfering destructively with the ambient noise.
申请人：WOLFSON MICROELECTRONICS PLC 地址：Westfield House, 26 Westfield Road Edinburgh EH11 2QB GB 国籍：GB 代理机构：O'Connell, David Christopher 更多信息请下载全文后查看
发明人：SIBBALD, Alastair 申请号：EP07732160.2 申请日：20070328 公开号：EP2002687A1 公开日：20081217
摘要：The invention provides a noise reduction control system for an ear-worn speaker-carrying device (“ESD”). The system is configured to sense ambient noise and to develop electrical signals which can be used to reduce the amount of said ambient noise audible to a wearer of the ESD. The system sets a plurality of predetermined and discrete noise reduction levels and automatically responds to at least one controlling event, outside the control of the wearer, to set the degree of noise reduction to one of those discrete levels. Typically, the system inverts and filters the electrical signals relating to ambient noise and feeds the inverted and filtered signals to the speaker of the ESD in time for the speaker to generate sounds capable of interfering destructively with the ambient noise.
申请人：WOLFSON MICROELECTRONICS PLC 地址：Westfield House, 26 Westfield Road Edinburgh EH11 2QB GB 国籍：GB 代理机构：O'Connell, David Christopher 更多信息请下载全文后查看