发明名称 PARADOXICAL HEARING AID.
摘要 <p>A hearing aid for a person with asymmetric hearing perception (a weaker ear system and a better ear system) employs conventional frequency-selective amplification (26L) of sound coming to the weaker ear's system and frequency selective amplitude adjustment (32) and arrival time adjustment (retardation or relative advancement) (34) of sound coming to the better ear's system so that its resultant characteristics match those of the weaker ear's system, as aided, or even without aiding the weaker ear's system. As a result, sound perceived by both ear systems is matched or balanced, at each frequency, in both arrival time and amplitude. Such interaural balancing effects a great improvement in the binural processing mechanism, which in turn increases speech perception, especially in the presence of general noise or adjacent localized noise sources. The aid may be implemented by a pair of microphones (24L, 24R), one for each ear's system. The signal from the microphone to the weaker ear's system includes a conventional variable gain amplifier (26L) and a conventional frequency selective filter (13) to provide tailored amplification of the sound to the weaker ear's system, insofar as possible. Also the channel to the weaker ear's system includes a fixed delay (28) to compensate for a delay in the channel to the better ear's system. The signal from the microphone to the better ear's system includes a variable gain amplifier (26R) and a set of bandpass filters (30) to cover the audio spectrum in discrete steps. Each filter is connected in series with a selected attenuator (32) and a selected time delay (34) so as to match the perceived arrival time and amplitude level at its band with that of the weaker ear's system.</p>
申请公布号 EP0349599(B2) 申请公布日期 1995.12.06
申请号 EP19880904872 申请日期 1988.05.11
申请人 JAY MANAGEMENT TRUST 发明人 JAMPOLSKY, ARTHUR
分类号 H04R25/04;H04R25/00;H04S1/00;(IPC1-7):H04R25/00 主分类号 H04R25/04
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