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1.发明授权Hall effect device for use in obtaining square or square root of a voltage amplitude 失效霍尔效应器用于获得电压幅度的平方根或平方根
公开(公告)号：US4015148A
公开(公告)日：1977-03-29
申请号：US683499
申请日：1976-05-05
CPC分类号： G06G7/162
摘要： In accordance with the Hall effect, a magnetic field applied perpendicular to the direction of current flow through a conductor causes an electric field perpendicular to both the direction of the current flow and the direction of the magnetic field established in the conductor. This effect has been used to produce magnetic field and current detectors, modulators and frequency doublers. In accordance with the present disclosure a portion of the magnetic field is reversed to produce squaring of or obtaining the square root of the amplitude of the voltage used to produce the conductor current.
摘要翻译： 根据霍尔效应，垂直于通过导体的电流方向施加的磁场引起垂直于电流方向和导体中建立的磁场方向的电场。 该效应已被用于产生磁场和电流检测器，调制器和倍频器。 根据本公开，磁场的一部分被反转以产生用于产生导体电流的电压的幅度的平方或获得平方根。
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2.发明授权Stereophonic sound reproduction with acoustically matched receiver units effecting flat frequency response at a listener's eardrums 失效具有声学匹配的接收机单元的立体声再现在听众（3秒鼓膜）下实现平坦的频率响应
公开(公告)号：US3985960A
公开(公告)日：1976-10-12
申请号：US554594
申请日：1975-03-03
CPC分类号： H04R29/001 , H04R1/1016 , H04R1/20 , H04R5/027
摘要： A binaural sound recording and reproduction system which utilizes a recording mannequin equipped with an electroacoustic model of the human auditory tract to thereby record the sound pressure which would be incident on a listener's eardrum and also utilizes a headset with in-ear transducers or receivers which exhibit a flat frequency response as measured at the listener's eardrums is described. The receiver units utilize acoustic impedance matching to the listener's ear canal to effect the flat frequency response characteristic. An electrical equalizer circuit to facilitate the use of the subject in-ear receivers with conventionally recorded sound is also disclosed.
摘要翻译： 一种双耳声音记录和再现系统，其使用配备有人类听觉道的电声模型的记录人体模型，从而记录将入射到听众鼓膜上的声压，并且还使用具有入耳式换能器或接收器的耳机 描述了在收听者鼓膜处测量的平坦频率响应。 接收机单元利用与收听者耳道的声阻抗匹配来实现平坦的频率响应特性。 还公开了一种有助于使用具有常规记录声音的被摄体入耳式接收器的电均衡器电路。
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