发明名称 |
Active noise suppression for a hearing aid device which can be worn in the ear or a hearing aid device with otoplastic which can be worn in the ear |
摘要 |
In the case of a hearing aid device which can be worn in the ear or a hearing aid device with a otoplastic which can be worn in the ear, the penetration of direct sound through a ventilation channel of the hearing aid device or of the otoplastic is prevented. An acoustic signal is picked up from the ventilation channel via a second microphone in a first region of the ventilation channel and phase-shifting it in a filter device in such a way that the direct sound is at least largely eliminated after the phase-shifted signal is emitted into the ventilation channel via a second earphone. The invention offers the advantage that an enlargement of the cross section of the ventilation channel is made possible as a result, even to provide an open supply, without disturbing direct sound getting into the auditory canal of the person wearing the hearing device.
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申请公布号 |
US6920227(B2) |
申请公布日期 |
2005.07.19 |
申请号 |
US20040893650 |
申请日期 |
2004.07.16 |
申请人 |
SIEMENS AUDIOLOGISCHE TECHNIK GMBH |
发明人 |
CHALUPPER JOSEF;LIPSKI WERNER;RASS UWE |
分类号 |
H04R3/02;H04R25/00;(IPC1-7):H04R25/00 |
主分类号 |
H04R3/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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