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公开(公告)号：US4924962A
公开(公告)日：1990-05-15
申请号：US71829
申请日：1987-07-10
申请人： Kenichi Terai , Shuji Saiki , Kousaku Murata , Katsuaki Satoh , Yoichi Kumura , Yasutoshi Nakama , Michiko Ogawa , Shuichi Obata
发明人： Kenichi Terai , Shuji Saiki , Kousaku Murata , Katsuaki Satoh , Yoichi Kumura , Yasutoshi Nakama , Michiko Ogawa , Shuichi Obata
IPC分类号： H04R1/28
CPC分类号： H04R1/2857 , H04R1/2842 , H04R1/2865
摘要： A sound reproducing apparatus for use in a vehicle having a speaker system constituted by at least one acoustic duct and a speaker unit disposed at a throat of the acoustic duct, an opening formed at the other end of the acoustic duct facing the passenger compartment of a vehicle. The apparatus is arranged such that, F0 and Fs are substantially equal to each other. Where Fs is the lowest frequency in a frequency range within which the imaginary part of the acoustic impedance at the sound radiating surface of the speaker system in the direction of the space within the passsenger compartment is zero and F0 is the low-range resonance frequency of the speaker system itself in the free space.
摘要翻译： 一种用于具有扬声器系统的车辆的声音再现装置，所述扬声器系统由设置在所述声学导管的喉部处的至少一个声学导管和扬声器单元构成，所述扬声器系统形成在所述声学导管的另一端面对所述乘客室 车辆。 该装置被布置成使得F0和Fs彼此基本相等。 其中Fs是在扬声器系统的声辐射表面的声阻抗的虚部在乘客舱内的空间的方向上为零的频率范围内的最低频率，并且F0是低频共振频率 扬声器系统本身在自由空间。
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公开(公告)号：US5416846A
公开(公告)日：1995-05-16
申请号：US249158
申请日：1994-05-25
CPC分类号： H04R3/002 , G10K11/1784 , G10K2210/1283 , G10K2210/30232 , G10K2210/3027 , G10K2210/3221
摘要： The noise control system of this invention includes: a noise detector for detecting a noise generated from a noise source in order to output a noise detection signal; an adaptive filter portion for outputting a control signal based on the noise detection signal so as to cancel the noise; a control loudspeaker for receiving the control signal that is to radiate a control sound to a predetermined region; and an error detector for detecting a residual error of the noise and the control sound in the predetermined region, wherein the adaptive filter portion includes: an adaptive filter for receiving the noise detection signal and processing the noise detection signal to output a control signal; an IIR filter section for receiving the noise detection signal, performing a filtering process to the noise detection signal according to a predetermined frequency characteristic, and outputting a first processing signal; an operation section for receiving the first processing signal, performing convolution with the first processing signal and a predetermined transfer function, and outputting a second processing signal; and a multiplying section for receiving the second processing signal and the error signal, multiplying the second processing signal by the error signal, and outputting an update signal for updating coefficients of the adaptive filter to the adaptive filter, the predetermined frequency characteristic and the predetermined transfer function being determined based on a control transfer characteristic from the control loudspeaker to the error detector.
摘要翻译： 本发明的噪声控制系统包括：噪声检测器，用于检测从噪声源产生的噪声，以输出噪声检测信号; 自适应滤波器部分，用于基于噪声检测信号输出控制信号以消除噪声; 控制扬声器，用于接收将控制声音辐射到预定区域的控制信号; 以及误差检测器，用于检测预定区域中的噪声残留误差和控制声音，其中自适应滤波器部分包括：自适应滤波器，用于接收噪声检测信号并处理噪声检测信号以输出控制信号; 用于接收噪声检测信号的IIR滤波器部分，根据预定频率特性对噪声检测信号执行滤波处理，并输出第一处理信号; 操作部分，用于接收第一处理信号，执行与第一处理信号和预定传送函数的卷积，并输出第二处理信号; 以及乘法部分，用于接收第二处理信号和误差信号，将第二处理信号乘以误差信号，并将自适应滤波器的系数更新的更新信号输出到自适应滤波器，预定频率特性和预定传送 功能是基于从控制扬声器到误差检测器的控制传递特性来确定的。
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公开(公告)号：US5388160A
公开(公告)日：1995-02-07
申请号：US896043
申请日：1992-06-08
IPC分类号： G10K11/178 , H03B29/00
CPC分类号： G10K11/1784 , G10K2210/3012 , G10K2210/3028 , G10K2210/3045
摘要： In a noise suppressor, a noise signal detected by a first detector is inputted to an adaptive filter and a FIR filter. An output signal of the adaptive filter is reproduced by a speaker. The signal reproduced by the speaker and a noise signal from a noise source are detected by a second detector. The signal detected by the second detector is band-limited by a filter circuit and sent to a LMS computing circuit. The LMS computing circuit updates a coefficient of the adaptive filter so as to minimize an output signal of the filter circuit in response to an output signal of the FIR filter and an output signal of the filter circuit.
摘要翻译： 在噪声抑制器中，由第一检测器检测到的噪声信号被输入到自适应滤波器和FIR滤波器。 自适应滤波器的输出信号由扬声器再现。 由第二检测器检测由扬声器再现的信号和来自噪声源的噪声信号。 由第二检测器检测到的信号被滤波器电路限制并发送到LMS计算电路。 LMS计算电路更新自适应滤波器的系数，以便响应于FIR滤波器的输出信号和滤波器电路的输出信号来最小化滤波器电路的输出信号。
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公开(公告)号：US5377276A
公开(公告)日：1994-12-27
申请号：US117717
申请日：1993-09-08
IPC分类号： G10K11/178 , H03B29/00
CPC分类号： G10K11/1784 , G10K2210/1282 , G10K2210/3012 , G10K2210/3032 , G10K2210/3045
摘要： An active noise controller includes a prediction filter which includes a delayer for delaying the noise or error detection signal by a predetermined period of time, a first adaptive filter for processing the output of the delayer to deliver its periodic component, and a subtractor for subtracting the output of the first adaptive filter from the noise detection signal to deliver a random component of the signal. More specifically, the prediction filter is capable of dividing the noise or error detection signal into two, periodic and random, components. In addition, two, second and third, adaptive filters are provided for processing the periodic and random components respectively. Accordingly, the second and third adaptive filters become responsive precisely to their respective periodic and random components regardless of the ratio in level between the two components, whereby any undesired noise consisting of the two discrete components will be suppressed.
摘要翻译： 有源噪声控制器包括预测滤波器，该预测滤波器包括用于将噪声或误差检测信号延迟预定时间段的延迟器，用于处理延迟器的输出以递送其周期性分量的第一自适应滤波器，以及减法器 从噪声检测信号输出第一自适应滤波器以传送信号的随机分量。 更具体地，预测滤波器能够将噪声或误差检测信号分成两个，周期性和随机分量。 另外，提供两个，第二和第三个自适应滤波器用于分别处理周期性和随机分量。 因此，第二和第三自适应滤波器对于它们各自的周期性和随机分量而言都是精确地响应，而与两个分量之间的电平之比无关，由此将抑制由两个分立分量组成的任何不需要的噪声。
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公开(公告)号：US4790014A
公开(公告)日：1988-12-06
申请号：US30910
申请日：1987-03-30
申请人： Koji Watanabe , Katsuhiko Hayashi , Nobuaki Minakuchi , Masayuki Misaki , Kenichi Terai , Yasutoshi Nakama , Masaharu Morita
发明人： Koji Watanabe , Katsuhiko Hayashi , Nobuaki Minakuchi , Masayuki Misaki , Kenichi Terai , Yasutoshi Nakama , Masaharu Morita
摘要： An analog sound signal is outputted. Low-frequency components are selected from the outputted analog sound signal so that a low-pitched sound signal is derived from the analog sound signal. A key of the low-pitched sound signal is lowered so that a very-low-pitched sound signal is derived from the low-pitched sound signal. The analog sound signal and the very-low-pitched sound signal may be converted into corresponding sounds respectively.
摘要翻译： 输出模拟声音信号。 从输出的模拟声音信号中选择低频分量，从而从模拟声音信号导出低音声音信号。 降低声音信号的键被降低，从低音声信号得到非常低音的声音信号。 模拟声音信号和非常低音的声音信号可以分别转换成对应的声音。
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公开(公告)号：US5742688A
公开(公告)日：1998-04-21
申请号：US383295
申请日：1995-02-03
申请人： Michiko Ogawa , Akihisa Kawamura , Masaharu Matsumoto , Toshihiko Date , Tadashi Tamura , Yasutoshi Nakama
发明人： Michiko Ogawa , Akihisa Kawamura , Masaharu Matsumoto , Toshihiko Date , Tadashi Tamura , Yasutoshi Nakama
CPC分类号： G10K15/02
摘要： A sound field controller of the invention reproduces a sound field which provides a distance perspective depending on a position of a sound image for a listener. The sound field controller includes: an A/D converter; a signal processing section for processing the digital signal using predetermined parameters, and generating a sound signal; an input device for inputting conditions which include a position of a sound image to be localized and a distance from a listener; a parameter controller for setting the parameters in the signal processing section so that the sound signal has characteristics in accordance with the input conditions; a D/A converter; and a reproducing unit for amplifying and reproducing the signal output from the D/A converter.
摘要翻译： 本发明的声场控制器再现根据收听者的声音图像的位置提供距离透视的声场。 声场控制器包括：A / D转换器; 信号处理部分，用于使用预定参数处理数字信号，并产生声音信号; 用于输入包括要被本地化的声像的位置和与收听者的距离的条件的输入装置; 参数控制器，用于设置信号处理部分中的参数，使得声音信号具有根据输入条件的特性; 一个D / A转换器; 以及用于放大和再现从D / A转换器输出的信号的再现单元。
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公开(公告)号：US4722009A
公开(公告)日：1988-01-26
申请号：US846907
申请日：1986-04-01
CPC分类号： G11B27/005 , G10L21/04 , G11B20/00007 , G11B2220/90
摘要： In a tone-restoring apparatus, a first and a second hold circuit latch at a period of 2T data signals read from a digital memory in response to a first and a second address supplied to the digital memory, and a first and a second multiplier circuit multiply the data signals latched in the first and second hold circuit by a monotonically increasing weighting function W.sub.1 (x) (0.ltoreq.x.ltoreq.NT, 0.ltoreq.W.sub.1 (x).ltoreq.1) or a monotonically increasing weighting function W.sub.2 (x) (0.ltoreq.x.ltoreq.NT, 0.ltoreq.W.sub.2 (x).ltoreq.1). An adder circuit adds the output signals from the first and second multiplier circuits to each other.
摘要翻译： 在音调恢复装置中，第一和第二保持电路响应于提供给数字存储器的第一和第二地址从数字存储器读取的2T数据信号的周期锁存，以及第一和第二乘法器电路 将第一和第二保持电路中锁存的数据信号乘以单调递增的加权函数W1（x）（0≤x≤N，0
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公开(公告)号：US06873837B1
公开(公告)日：2005-03-29
申请号：US09492288
申请日：2000-01-27
摘要： An emergency reporting apparatus for a vehicle includes a microphone, a loudspeaker, and a handsfree system circuit. Handsfree two-way speech communication with an emergency report receiving center is allowed via the microphone, the loudspeaker, and the handsfree system circuit. A volume control circuit connected to the loudspeaker operates for controlling a volume level of sound generated by the loudspeaker at a predetermined constant level or higher. The volume control circuit may control the volume level at the predetermined constant level, and may inhibit a user from changing the volume level.
摘要翻译： 一种用于车辆的应急报告装置包括麦克风，扬声器和免提系统电路。 通过麦克风，扬声器和免提系统电路允许与紧急报告接收中心的免提双向语音通信。 连接到扬声器的音量控制电路用于控制由扬声器产生的声音的音量水平处于预定的恒定水平或更高的水平。 音量控制电路可以以预定的恒定电平来控制音量，并且可以禁止用户改变音量。
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公开(公告)号：US06310543B1
公开(公告)日：2001-10-30
申请号：US09504115
申请日：2000-02-15
IPC分类号： B60Q100
CPC分类号： H04M11/04 , G08B25/016 , H04W4/90 , H04W76/50
摘要： An emergency call system disposed in a vehicle for sending data such as on the present location of the vehicle as well as a registered details of the vehicle to an emergency call system-governing center such as a police station and an emergency call center in case of emergency such as a traffic accident or sudden illness, the improvement wherein emergency call system terminal equipment is controllable from the outside thereof. The emergency call system according to the present invention includes an emergency call communication means for telephoning the emergency call system-governing center via a telecommunication enterpriser's base station, a control section for sending data such as on a vehicle's travelling or heading direction as well as a vehicle's location to the emergency call system-governing center, and a connection interface for causing one interface signal from the emergency call communication means and another from the control section to be sent out to the outside of the emergency call system terminal equipment, thereby permitting these interface signals to interface with the respective external connection equipment.
摘要翻译： 设置在车辆中的紧急呼叫系统，用于将诸如车辆的当前位置的数据以及车辆的登记细节发送到诸如警察局和紧急呼叫中心的紧急呼叫系统管理中心，以便在 诸如交通事故或突发疾病的紧急情况，其中紧急呼叫系统终端设备可从外部控制的改进。 根据本发明的紧急呼叫系统包括：经由电信业主基站对紧急呼叫系统管理中心进行电话呼叫的紧急呼叫通信装置，用于发送诸如车辆行驶或航向方向的数据的控制部分以及 车辆到紧急呼叫系统管理中心的位置，以及用于使来自紧急呼叫通信装置的一个接口信号和来自控制部分的另一个接口信号的连接接口发送到紧急呼叫系统终端设备的外部，从而允许这些 接口信号与相应的外部连接设备接口。
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公开(公告)号：US06377165B1
公开(公告)日：2002-04-23
申请号：US09488526
申请日：2000-01-21
申请人： Kenji Yoshioka , Yasutoshi Nakama
发明人： Kenji Yoshioka , Yasutoshi Nakama
IPC分类号： B60Q100
CPC分类号： G08G1/205 , G08B25/016 , G08B25/10
摘要： The Mayday system equipment, installable on an automotive vehicle, is separated into a locator unit which produces vehicle locative information and a communicator unit which produces emergency report information including the vehicle locative information produced by the locator unit. Resultant emergency report information is transmitted to an emergency center. The data/signal transmission between the locator unit and the communicator unit is performed via a cable or by wireless.
摘要翻译： 可安装在汽车上的五月天系统设备被分成一个产生车辆定位信息的定位器单元和一个产生应急报告信息的通信单元，该信息包括定位单元产生的车辆定位信息。 所得到的紧急情况报告信息被传送到紧急中心。 定位器单元和通信器之间的数据/信号传输通过电缆或无线进行。
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