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公开(公告)号：US4622691A
公开(公告)日：1986-11-11
申请号：US739954
申请日：1985-05-31
申请人： Akio Tokumo , Yoshiro Kunugi , Toshikazu Yoshimi , Shinjiro Kato , Yoshio Sasaki , Makoto Odaka , Takeshi Sato
发明人： Akio Tokumo , Yoshiro Kunugi , Toshikazu Yoshimi , Shinjiro Kato , Yoshio Sasaki , Makoto Odaka , Takeshi Sato
CPC分类号： H03G5/00 , H04S7/307 , H04R2499/13 , H04R5/02 , H04S7/302
摘要： A mobile sound field correcting system for correcting an acoustic characteristic in a vehicle sound field formed by direct waves radiated from loudspeakers and reflected waves thereof providing satisfactory acoustic characteristics for different vehicles and different listening points within a vehicle. A first correcting means corrects a power spectrum of each loudspeaker in a frequency range above a frequency at which a decrease of starts of the power spectrum in a high-frequency range of each loudspeaker. Second correcting means corrects for irregularities in the frequency characteristic of each loudspeaker caused by interference of the direct waves with the reflected waves in a frequency lower than the drop-off frequency of this power spectrum.
摘要翻译： 一种移动声场校正系统，用于校正由扬声器和反射波辐射的直接波形成的车辆声场中的声学特性，为车辆内的不同车辆和不同收听点提供令人满意的声学特性。 第一校正装置在每个扬声器的高频范围内功率谱开始减小的频率以上的频率范围内校正每个扬声器的功率谱。 第二校正装置校正由直流波与反射波的干扰导致的每个扬声器的频率特性的不规则性，其频率低于该功率谱的下降频率。
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公开(公告)号：US4868878A
公开(公告)日：1989-09-19
申请号：US077071
申请日：1987-07-28
申请人： Yoshiro Kunugi , Akio Tokumo , Toshikazu Yoshimi , Yoshio Sasaki , Shinjiro Kato , Shuuichi Mori , Makoto Odaka , Takeshi Sato
发明人： Yoshiro Kunugi , Akio Tokumo , Toshikazu Yoshimi , Yoshio Sasaki , Shinjiro Kato , Shuuichi Mori , Makoto Odaka , Takeshi Sato
摘要： A sound field correcting system for correcting for multipath frequency-characteristic distortion in an acoustic reproducing system. In one embodiment, the level and delay of an original signal are adjusted and superposed on the original signal so as to obtain a signal which, when reproduced by a loudspeaker, yields a sound pattern at a listening point having a flat frequency characteristic. The delay adjustment is effected in accordance with a difference between the travel distances of direct and reflected sound waves to the listening point.
摘要翻译： 一种用于校正声学再现系统中的多径频率特性失真的声场校正系统。 在一个实施例中，将原始信号的电平和延迟调整并重叠在原始信号上，以便获得当由扬声器再现时在具有平坦频率特性的收听点处产生声音模式的信号。 根据直接和反射的声波到收听点的移动距离之间的差异来实现延迟调整。
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公开(公告)号：US4648117A
公开(公告)日：1987-03-03
申请号：US739652
申请日：1985-05-31
申请人： Yoshiro Kunugi , Akio Tokumo , Toshikazu Yoshimi , Shinjiro Kato , Yoshio Sasaki , Makoto Odaka , Takeshi Sato
发明人： Yoshiro Kunugi , Akio Tokumo , Toshikazu Yoshimi , Shinjiro Kato , Yoshio Sasaki , Makoto Odaka , Takeshi Sato
CPC分类号： H04S7/307 , H03G3/00 , H03G5/00 , H04S1/002 , H04R2499/13
摘要： A sound field correcting device for use in a stereophonic system intended for vehicular use. Speakers are installed on opposite sides of both the front and rear seats of the vehicle. The number of persons seated in the vehicle is determined and applied to a correcting unit. When plural persons are seated in the vehicle, the sound pressure levels in the high-frequency range of loudspeakers is increased. Also, the sound pressure levels of the speakers can be corrected in accordance with the positions at which persons are seated in the vehicle.
摘要翻译： 一种在用于车辆用途的立体声系统中使用的声场校正装置。 扬声器安装在车辆前后座椅的两侧。 确定坐在车辆中的人数并将其应用于校正单元。 当多个人坐在车辆中时，扬声器的高频范围内的声压级增加。 此外，可以根据人员坐在车辆中的位置来校正扬声器的声压级。
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公开(公告)号：US4980914A
公开(公告)日：1990-12-25
申请号：US418042
申请日：1989-10-06
申请人： Yoshiro Kunugi , Akio Tokumo , Toshikazu Yoshimi , Yoshio Sasaki , Shinjiro Kato
发明人： Yoshiro Kunugi , Akio Tokumo , Toshikazu Yoshimi , Yoshio Sasaki , Shinjiro Kato
摘要： A sound field correcting system for correcting for mulitpath frequency-characteristic distortion in an acoustic reproducing system. In one embodiment, the level and delay of an original signal are adjusted and superposed on the original signal so as to obtain a signal which, when reproduced by a loudspeaker, yields a sound pattern at a listening point having a flat frequency characteristic. The delay adjustment is effected in accordance with a difference between the travel distances of direct and reflected sound waves to the listening point.
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5.发明授权
公开(公告)号：US4644292A
公开(公告)日：1987-02-17
申请号：US739953
申请日：1985-05-31
申请人： Yoshiro Kunugi , Makoto Odaka , Takeshi Sato , Yoshio Sasaki , Akio Tokumo
发明人： Yoshiro Kunugi , Makoto Odaka , Takeshi Sato , Yoshio Sasaki , Akio Tokumo
摘要： An automatic gain control unit particularly adapted for vehicular use is disclosed. The ambient noise level inside the vehicle is detected, as is the level of the audio signal. A difference is formed between detection signals thus produced, and a frequency characteristic of a gain varying device, inserted in an audio signal path of the audio device, is varied according to this difference.
摘要翻译： 公开了一种特别适用于车辆用途的自动增益控制单元。 检测车辆内部的环境噪声水平，以及音频信号的电平。 在这样产生的检测信号之间形成差异，并且插入音频装置的音频信号路径中的增益改变装置的频率特性根据该差异而变化。
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6.发明授权Method and apparatus for measuring and correcting acoustic characteristic in sound field 失效用于测量和校正声场声学特性的方法和装置
公开(公告)号：US4739513A
公开(公告)日：1988-04-19
申请号：US739654
申请日：1985-05-31
申请人： Yoshiro Kunugi , Shinichi Suzuki , Masayuki Kato , Akio Tokumo , Toshikazu Yoshimi , Takeshi Sato
发明人： Yoshiro Kunugi , Shinichi Suzuki , Masayuki Kato , Akio Tokumo , Toshikazu Yoshimi , Takeshi Sato
摘要： The acoustic transmission characteristics of a sound field, such as in the passenger compartment of a vehicle, are measured by placing microphones at the positions of ears of a dummy mannequin having a sound absorbing characteristic similar to that of a clothed adult human. The transmission characteristics are then corrected, such as with an automatic graphic equalizer, to provide optimized listening conditions inside the sound field for an actual listener. The use of the invention results in a listener's perception of completely natural sound.
摘要翻译： 通过将麦克风放置在具有与穿着成年人相似的吸声特性的虚拟人体模型的耳朵的位置来测量声场的声学传播特性，例如车辆的乘客室。 然后校正传输特性，例如使用自动图形均衡器，以为实际听众提供声场内的优化聆听条件。 本发明的使用导致听众对完全自然的声音的感知。
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7.发明授权Oscillator having capacitor charged and discharged by current mirror circuits 失效振荡器具有由电流镜电路充电和放电的电容器
公开(公告)号：US4418323A
公开(公告)日：1983-11-29
申请号：US240686
申请日：1981-03-05
申请人： Akio Tokumo , Yoshiro Kunugi
发明人： Akio Tokumo , Yoshiro Kunugi
IPC分类号： H03K3/0231 , H03K4/06 , H03K7/06 , H03K3/282
CPC分类号： H03K7/06 , H03K3/0231 , H03K4/06
摘要： An oscillator circuit adapted for use as a voltage controlled oscillator in which all of the transistors of the oscillator circuit are operated in non-saturated regions so that the minority carrier accumulation time does not affect the maximum operating frequency of the circuit. First and second current mirror circuits are coupled to opposed outputs of a differential amplifier circuit and are coupled to charge and discharge a capacitor with constant current in response to the states of the differential amplifier circuit. The differential amplifier circuit is provided with a hysteresis characteristic.
摘要翻译： 一种适用于压控振荡器的振荡器电路，其中振荡器电路的所有晶体管在非饱和区域中工作，使得少数载流子累积时间不影响电路的最大工作频率。 第一和第二电流镜电路被耦合到差分放大器电路的相对的输出端，并响应于差分放大器电路的状态而被耦合以对具有恒定电流的电容器进行充电和放电。 差分放大器电路具有滞后特性。
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公开(公告)号：US4694498A
公开(公告)日：1987-09-15
申请号：US793417
申请日：1985-10-31
申请人： Shinichi Suzuki , Akio Tokumo , Yoshiro Kunugi , Masayuki Kato
发明人： Shinichi Suzuki , Akio Tokumo , Yoshiro Kunugi , Masayuki Kato
摘要： An automatic sound field correcting system with graphic equalizer means to be provided in an audio signal supply line. A test signal such as a pink noise is radiated in the listening space and detected at a predetermined listening point to determine the detection frequency characteristic of the test signal, thereby to adjust the frequency characteristic of the graphic equalizer means. Thereafter, the frequency characteristic of the graphic equalized means is made equal to different band-pass filter characteristics, one after another, and each time the equalization is effected, the detected test signal is obtained through the grapic equalizer means for determination of the detected frequency characteristic of the test signal.
摘要翻译： 一种具有图形均衡器装置的自动声场校正系统，被提供在音频信号供应线中。 诸如粉红噪声的测试信号在收听空间中被辐射并在预定的收听点被检测，以确定测试信号的检测频率特性，从而调整图形均衡器装置的频率特性。 此后，使图形均衡装置的频率特性一个接一个地等于不同的带通滤波器特性，并且每次实现均衡时，通过绘制均衡器装置获得检测的测试信号，以确定检测频率 测试信号的特性。
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公开(公告)号：US4637049A
公开(公告)日：1987-01-13
申请号：US721704
申请日：1985-04-10
申请人： Yoshiro Kunugi
发明人： Yoshiro Kunugi
摘要： There is provided in a car-mounted audio system an operator control section, a display section and a mechanical deck section in a central console or dashboard unit, wherein other units are located in hideaway positions, the system being characterized in that, a built-in microphone and a microphone amplifier are provided at the central control apparatus, buffers are provided at the hideaway units, and a microphone signal bus line is incorporated in the signal line connection between the central control and the hideaway units to couple a common microphone output signal therebetween.
摘要翻译： 在车载音响系统中，在中央控制台或仪表板单元中设置有操作员控制部分，显示部分和机械甲板部分，其中其他单元位于隐藏位置，该系统的特征在于， 在麦克风和麦克风放大器设置在中央控制装置处，缓冲器设置在隐藏单元处，并且麦克风信号总线线路被并入中央控制器和隐藏单元之间的信号线连接中，以将公共麦克风输出信号 之间。
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公开(公告)号：US4688258A
公开(公告)日：1987-08-18
申请号：US793384
申请日：1985-10-31
申请人： Yoshiro Kunugi , Shinichi Suzuki , Masayuki Kato
发明人： Yoshiro Kunugi , Shinichi Suzuki , Masayuki Kato
CPC分类号： H03G5/165
摘要： An automatic graphic equalizer for a sound system has circuitry for measuring the effect of the physical environment receiving a sound on the frequency characteristics of the sound, and for adjusting the characteristics of a graphic equalizer to compensate for distortions in the desired flat frequency response caused by the physical environment. The circuitry includes a pink noise generator supplying pink noise to the graphic equalizer during an initialization operation, the graphic equalizer being controlled by a controller to present a flat frequency characteristic. The equalizer output is sent to a speaker which supplies the pink noise as a sound signal to the selected environment. A microphone picks up the sound in the selected environment and converts it to an electrical signal which is supplied through an ALC amplifier to a frequency-variable band-pass filter to detect the signal level in each of the equalizer frequency bands. The level signals are smoothed in a level detector and digitized to be input to the controller which readjusts the graphic equalizer to compensate for distortions in the desired flat frequency response caused by the selected environment.
摘要翻译： 用于声音系统的自动图形均衡器具有用于测量接收声音的物理环境对声音的频率特性的影响的电路，并且用于调整图形均衡器的特性以补偿由所产生的期望的平坦频率响应引起的失真 物理环境。 电路包括在初始化操作期间向图形均衡器供应粉红噪声的粉红噪声发生器，图形均衡器由控制器控制以呈现平坦的频率特性。 均衡器输出被发送到扬声器，扬声器将粉红噪声作为声音信号提供给所选择的环境。 麦克风拾取所选择的环境中的声音，并将其转换为通过ALC放大器提供的电信号到频率可变带通滤波器，以检测每个均衡器频带中的信号电平。 电平信号在电平检测器中被平滑，并被数字化以输入到控制器，其重新调整图形均衡器以补偿由所选择的环境引起的期望的平坦频率响应中的失真。
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