公开(公告)号：US5742896A

公开(公告)日：1998-04-21

申请号：US612181

申请日：1990-11-09

申请人： Amar G. Bose ,  William R. Short

发明人： Amar G. Bose ,  William R. Short

IPC分类号： H04B7/08 ,  H04B17/02

CPC分类号： H04B7/082 ,  H04B7/0888

摘要： Diversity reception apparatus includes a number of receivers each having a distortion detector. There is a common output channel. A comparator compares the signals detected by detectors and provides a control signal to a selector or switching circuit that couples that receiver having the preferred received signal to the common output channel.

摘要翻译： 分集接收装置包括多个具有失真检测器的接收机。 有一个共同的输出通道。 比较器比较由检测器检测到的信号，并向选择器或切换电路提供控制信号，该选择器或切换电路将具有优选接收信号的接收机耦合到公共输出通道。

公开(公告)号：USD326855S

公开(公告)日：1992-06-09

申请号：US387097

申请日：1989-07-28

申请人： Amar G. Bose ,  John J. Breen

设计人： Amar G. Bose ,  John J. Breen

公开(公告)号：US5034984A

公开(公告)日：1991-07-23

申请号：US303993

申请日：1989-01-27

申请人： Amar G. Bose

发明人： Amar G. Bose

IPC分类号： H03G3/32 ,  H03G5/10 ,  H03G5/22

CPC分类号： H03G5/22 ,  H03G3/32 ,  H03G5/10

摘要： A variable gain amplifier receives an input electrical audio signal and has its gain controlled by a vehicle speed signal representative of the vehicle speed. The signal provided by the variable gain amplifier is coupled to a manually set volume control that is coupled to a power amplifier that drives a loudspeaker. According to a specific form of the invention the manually set volume control is an element in a dynamic equalization circuit that alters the equalization in the bass frequency region typically below 200 Hz in accordance with the setting of the control to provide more boost at lower settings of the volume control.

摘要翻译： 可变增益放大器接收输入电音频信号并且其增益由表示车辆速度的车辆速度信号控制。 由可变增益放大器提供的信号耦合到手动设置的音量控制，该音量控制耦合到驱动扬声器的功率放大器。 根据本发明的具体形式，手动设置的音量控制是动态均衡电路中的元件，其根据控制的设置改变通常低于200Hz的低音频率区域中的均衡，以在较低的设置 音量控制。

公开(公告)号：US4549631A

公开(公告)日：1985-10-29

申请号：US544466

申请日：1983-10-24

申请人： Amar G. Bose

发明人： Amar G. Bose

IPC分类号： H04R1/02 ,  H04R1/28 ,  H05K5/00

CPC分类号： H04R1/2842

摘要： A loudspeaker system has an enclosure of rectangular cross section with a baffle dividing the interior into first and second subchambers. Each subchamber has a port tube coupling the subchamber to the region outside the enclosure. The dividing baffle carries a woofer.

摘要翻译： 扬声器系统具有矩形截面的外壳，挡板将内部分成第一和第二子室。 每个子室具有将子室耦合到外壳外部的端口管。 分隔挡板带有低音扬声器。

公开(公告)号：US4538298A

公开(公告)日：1985-08-27

申请号：US428148

申请日：1982-09-29

申请人： Amar G. Bose

发明人： Amar G. Bose

IPC分类号： H03G5/04 ,  H03G5/00

CPC分类号： H03G5/04

摘要： A tone control has a transfer function characterized by a zero and pole on the real axis spaced from the imaginary axis by an audible frequency with adjustment of a potentiometer causing one of the zero and pole to slide along the real axis while the other remains stationary. A treble control with fixed pole at 1 kHz from the imaginary axis has a potentiometer connected to an input terminal with its arm connected to an output terminal and is in series with a resistor and capacitor between the input terminal and ground. A bass cut control has a capacitor connected to an input terminal in series with a resistor between the input terminal and ground. The capacitor is shunted by a potentiometer having its arm connected to an output terminal. A treble tone control circuit with both cut and boost has a center tapped potentiometer with first and second opposed ends connected to + inputs of first and second operational amplifiers, each having a feedback connection with the - input. First and second capacitors connect the outputs of the first and second operational amplifiers, respectively, to the - input of a third operational amplifier. The series combination of first and second resistors connect the - input of the third operational amplifier to the + input of the first operational amplifier and the serial combination of third and fourth resistors connect the - input of the third operational amplifier to the + input of the second operational amplifier. There is a feedback connection with the output of the third operational amplifier to the junction of the first and second resistors. The wiper of the tapped potentiometer, the tap of the potentiometer and the + input of the third operational amplifier are connected to a common line.

摘要翻译： 音调控制具有传递函数，其特征在于在实轴上的零点和极点与虚轴间隔一个可听频率，调节电位器使得零和极中的一个沿着实轴滑动，而另一个保持静止。 具有从假想轴1 kHz的固定极的高音控制电位器连接到输入端，其臂连接到输出端，并与输入端和地之间的电阻和电容串联。 低音切割控制器具有与输入端子和地之间的电阻器串联的输入端子的电容器。 电容器由其臂连接到输出端子的电位器分流。 具有切断和升压的高音音调控制电路具有中心抽头电位器，其第一和第二相对端连接到第一和第二运算放大器的+输入端，每个具有与输入的反馈连接。 第一和第二电容器将第一和第二运算放大器的输出分别连接到第三运算放大器的输入端。 第一和第二电阻器的串联组合将第三运算放大器的输入端连接到第一运算放大器的+输入端，第三和第四电阻器的串联组合将第三运算放大器的输入端连接到 第二运算放大器。 存在与第三运算放大器的输出到第一和第二电阻器的结的反馈连接。 点火电位器的抽头，电位器的抽头和第三个运算放大器的+输入端连接到一条公共线。

公开(公告)号：US4494074A

公开(公告)日：1985-01-15

申请号：US372472

申请日：1982-04-28

申请人： Amar G. Bose

发明人： Amar G. Bose

IPC分类号： G10K11/178 ,  H03F3/68 ,  H03G3/32 ,  H04R3/00 ,  H04R5/033 ,  H03F1/32

CPC分类号： H03G3/32 ,  G10K11/1782 ,  H03F3/68 ,  H04R1/1083 ,  G10K2210/108 ,  G10K2210/1081 ,  G10K2210/3011 ,  G10K2210/3013 ,  G10K2210/506 ,  G10K2210/509 ,  H04R5/033

摘要： Headphones have a small cavity between the diaphragm and the ear canal with a microphone in the cavity closely adjacent to the diaphragm providing a feedback signal that is combined with the input electrical signal to be reproduced by the headphones to provide a combined signal that is power amplified for driving the diaphragm.

摘要翻译： 耳机在隔膜和耳道之间具有小空腔，在与隔膜紧密相邻的空腔中具有麦克风，提供与由耳机再现的输入电信号组合的反馈信号，以提供功率放大的组合信号 用于驱动隔膜。

公开(公告)号：US4107461A

公开(公告)日：1978-08-15

申请号：US804896

申请日：1977-06-09

申请人： Amar G. Bose

发明人： Amar G. Bose

IPC分类号： H04R5/02

CPC分类号： H04R5/02

摘要： A generally semicircular enclosure about 3 feet in radius and 7.5 feet high carries a pair of horizontally mounted loudspeakers centered about 5.5 feet from the bottom facing the center of the enclosure.

摘要翻译： 半径约为3英尺，高7.5英尺的大致半圆形外壳承载着一对水平安装的扬声器，其中心位于面向机箱中心的底部5.5英尺处。