公开(公告)号：US5181248A

公开(公告)日：1993-01-19

申请号：US641681

申请日：1991-01-16

申请人： Kiyofumi Inanaga ,  Yashuhiro Iida ,  Hiroyuki Sogawa ,  Susumu Yabe

发明人： Kiyofumi Inanaga ,  Yashuhiro Iida ,  Hiroyuki Sogawa ,  Susumu Yabe

IPC分类号： H04R5/033 ,  H04S1/00 ,  H04S7/00

CPC分类号： H04S7/303 ,  H04S1/00 ,  H04S7/304

摘要： An acoustic signal reproducing apparatus for reproducing acoustic signals through headphone devices is disclosed. The left channel and right channel acoustic signals are provided by a device for processing the transmission characteristics with constant transmission characteristics representing the location of an imaginary sound source relative to both of the listener's ears. The left channel and right channel acoustic signals, processed in this manner by the device for processing the transmission characteristics, are provided by an acoustic signal processing device with a level difference and a time difference consistent with changes in orientation of the user's head. In this manner, optimum binaural reproduction with respect to the imaginary sound source may be achieved.

公开(公告)号：US5452359A

公开(公告)日：1995-09-19

申请号：US752530

申请日：1993-03-22

申请人： Kiyofumi Inanaga ,  Hiroyuki Sogawa ,  Yasuhiro Iida ,  Susumu Yabe

发明人： Kiyofumi Inanaga ,  Hiroyuki Sogawa ,  Yasuhiro Iida ,  Susumu Yabe

IPC分类号： H04R5/033 ,  H04S1/00 ,  H04S7/00 ,  H04R5/02

CPC分类号： H04S7/303 ,  H04S1/005

摘要： An acoustic signal reproducing apparatus for supplying an acoustic signal to a headphone device, in which position-detecting reference signals from a reference signal source are sensed by a pair of signal sensors provided at two places over a listener's head. The turning angle and the relative distance of the head with respect to the reference signal source are calculated by processing units on the basis of these signal sensors and transmission characteristics with respect to an arbitrarily positioned imaginary sound source are found from the information concerning the relative distance and the turning angle, with the reference signal source as a reference position. Acoustic signals are processed by acoustic signal processing devices on the basis of the transmission characteristics to realize binaural reproduction with respect to the imaginary sound source. A level detection unit detects when the output level of at least one of the signal sensors becomes lower than a reference level and, on the basis of a detection output of the detection unit, the acoustic signals supplied to the headphone device are controlled by a control unit to realize a stable binaural playback operation, and an alarm is supplied to the headphone device in response to the output of the level detection unit.

摘要翻译： PCT No.PCT / JP91 / 00056 Sec。 371日期1993年3月22日 102（e）1993年3月22日PCT 1991年1月18日PCT PCT。 出版物WO91 / 11079 日期1997年7月25日。一种用于向耳机装置提供声信号的声信号再现装置，其中来自参考信号源的位置检测参考信号由设置在听者头部两处的一对信号传感器感测 。 通过基于这些信号传感器的处理单元来计算头部相对于参考信号源的转动角度和相对距离，并且从关于相对距离的信息中找到关于任意位置的假想声源的传播特性 和转动角度，参考信号源作为参考位置。 基于传输特性，声信号由声信号处理装置处理，以实现相对于假想声源的双耳再现。 电平检测单元检测至少一个信号传感器的输出电平何时低于参考电平，并且基于检测单元的检测输出，提供给耳机装置的声信号由控制 单元以实现稳定的双耳播放操作，并且响应于电平检测单元的输出向耳机设备提供警报。