公开(公告)号：US4866776A

公开(公告)日：1989-09-12

申请号：US665110

申请日：1984-10-26

申请人： Junichi Kasai ,  Hiroshi Imai ,  Takayuki Yanagishima

发明人： Junichi Kasai ,  Hiroshi Imai ,  Takayuki Yanagishima

IPC分类号： H04R5/02

CPC分类号： H04R5/02 ,  H04R2499/13

摘要： An automotive audio speaker system includes a set of main speakers and a set of sub-speakers. The main speakers are distributed about the vehicle cabin so as to focus audio sound near the center thereof. The main speakers reproduce separate right and left audio channels, either singly or in groups, and the sub-speakers reproduce monaural sound resulting from combination of the right and left channels. The sub-speakers are arranged and operated in such a manner that the audio focus is divided and displaced to form a number of acoustic images, each coinciding with a passenger seat. Seat sensors capable of detecting the presence of a passenger in a corresponding seat may be used to control the operation of the sub-speakers, either by adjusting their relative volumes or by distributing the right and/or left audio channels thereamong.

摘要翻译： 汽车音响扬声器系统包括一组主扬声器和一组副扬声器。 主扬声器围绕车厢分布，以便在其中心附近聚焦音频声音。 主扬声器单独或分组地再现独立的右和左音频通道，并且副扬声器再现由左右声道的组合产生的单声道声音。 子扬声器以这样的方式布置和操作，使得音频焦点被分离和移位以形成多个声像，每个与乘客座重合。 能够检测乘客在相应座位中的存在的座椅传感器可以用于通过调节子音箱的相对音量或通过分配右和/或左音频声道来控制副扬声器的操作。

公开(公告)号：US4720867A

公开(公告)日：1988-01-19

申请号：US628604

申请日：1984-07-06

申请人： Hiroshi Imai ,  Takayuki Yanagishima ,  Junichi Kasai

发明人： Hiroshi Imai ,  Takayuki Yanagishima ,  Junichi Kasai

IPC分类号： H04R1/00 ,  B60R11/00 ,  B60R11/02 ,  H04R1/02 ,  H04R9/06 ,  H04R7/04

CPC分类号： H04R1/023 ,  B60R11/0217 ,  H04R9/066 ,  B60R2011/0024 ,  B60R2011/0043 ,  H04R2499/13

摘要： A woofer system for an automotive audio system is provided with a protective cover extending over a section of a vehicle panel which both forms part of a vehicle body and serves as a speaker diaphragm producing acoustic vibrations at audio frequencies. The cover is in a spaced-apart relationship with said section so as not to interfere with oscillation of the section of the vehicle panel while it is oscillating at audio frequencies. The cover has a support extending toward the vehicle panel and surrounding the section. The support is formed with at least one opening for transmitting acoustic vibrations produced by oscillation of the section of the vehicle panel.

摘要翻译： 一种用于汽车音响系统的低音扬声器系统设置有保护罩，该保护盖延伸在车辆面板的一部分上，两者都形成车体的一部分，并且用作产生音频频率的声振动的扬声器隔膜。 所述盖与所述部分间隔开关系，以便在音频频率振荡时不干扰车辆面板部分的振荡。 盖具有朝向车辆面板延伸并围绕该部分的支撑。 支撑件形成有用于传递由车辆面板的部分的振动产生的声音振动的至少一个开口。

公开(公告)号：US4769843A

公开(公告)日：1988-09-06

申请号：US838777

申请日：1986-03-12

申请人： Hiroshi Imai ,  Junichi Kasai

发明人： Hiroshi Imai ,  Junichi Kasai

IPC分类号： H04S1/00 ,  B60R11/02 ,  H04R3/00 ,  H04R5/02

CPC分类号： H04R3/00

摘要： A system for reproducing stereophonic signal to create a stereophonic sound image in front of each of listeners sitting side by side in a compartment. The system includes a first loudspeaker positioned relative to the right of the first listener sitting on the right, a second side loudspeaker positioned relative to the left of the second listener sitting on the left, and a center loudspeaker unit positioned between the first and second side loudspeakers. A signal generator generates R and L stereophonic signals. The R signal is applied to drive the first side loudspeaker and the L signal is applied to drive the second side loudspeaker. The R and L signals are applied to drive the center loudspeaker unit. The signal generator includes a device for providing a predetermined time delay to the R and L signals applied to drive the center loudspeaker unit with respect to the signals applied to drive the first and second side loudspeakers.

摘要翻译： 一种用于再现立体声信号以在每个听众前面并排坐在隔间中的立体声声音图像的系统。 该系统包括相对于位于右侧的第一收听者的右侧定位的第一扬声器，相对于位于左侧的第二听众的左侧定位的第二侧扬声器和位于第一和第二侧之间的中央扬声器单元 扬声器。 信号发生器产生R和L立体声信号。 施加R信号以驱动第一侧扬声器并且施加L信号以驱动第二侧扬声器。 应用R和L信号来驱动中置扬声器单元。 信号发生器包括用于相对于施加到驱动第一和第二侧扬声器的信号为施加到驱动中心扬声器单元的R和L信号提供预定时间延迟的装置。

公开(公告)号：US4641344A

公开(公告)日：1987-02-03

申请号：US688992

申请日：1985-01-04

申请人： Junichi Kasai ,  Hiroshi Imai

发明人： Junichi Kasai ,  Hiroshi Imai

IPC分类号： H03G3/30 ,  H03G3/32 ,  H03G5/16 ,  H03G3/20

CPC分类号： H03G3/3005 ,  H03G3/32 ,  H03G5/165

摘要： Audio equipment designed for use at widely varying ambient noise levels allows an audio signal to be amplified to enhanced levels under noisy conditions without added distortion near the high-amplitude end of its dynamic range. Detected or anticipated ambient noise conditions trigger a dynamic range controller to boost the gain of the audio signal to an extent inversely related to the audio signal amplitude. Thus, low-volume audio will be boosted to a great extent while the high-volume end of the dynamic range will experience little or no additional gain. The net effect is two allowable dynamic ranges, both sharing the same high-end volume level but with possibly widely different low-end volume levels. This gain and dynamic range control may also be performed independently on a number of discrete frequency bands. In addition, noise components inherent to the audio signal may be filtered to ambient noise-dependent extends, or the gain boost may be inhibited at volume levels susceptible to such noise.

摘要翻译： 设计用于广泛变化的环境噪声水平的音频设备允许音频信号在噪声条件下被放大到增强水平，而在其动态范围的高幅度端附近没有增加失真。 检测到的或预期的环境噪声条件触发动态范围控制器，以将音频信号的增益提升到与音频信号幅度成反比的程度。 因此，低音量音频将在很大程度上得到提升，而动态范围的大容量结束将会获得很少或没有额外的增益。 净效应是两个允许的动态范围，两者共享相同的高端音量水平，但可能具有广泛不同的低端音量。 该增益和动态范围控制也可以在多个离散频带上独立地执行。 此外，音频信号固有的噪声分量可以被过滤到与环境噪声相关的扩展，或者可能在容易受到这种噪声影响的音量水平下抑制增益增益。

公开(公告)号：US5083311A

公开(公告)日：1992-01-21

申请号：US915114

申请日：1986-10-03

申请人： Junichi Kasai ,  Hiroshi Imai ,  Tatuyoshi Nanbu

发明人： Junichi Kasai ,  Hiroshi Imai ,  Tatuyoshi Nanbu

IPC分类号： H04R3/04 ,  H04S1/00 ,  H04S5/00

CPC分类号： H04S5/00 ,  H04S5/02 ,  H04S7/305

摘要： An apparatus for producing an improved sound field in an acoustic space. The apparatus comprises a signal source for producing a source signal. The source signal is applied to a loudspeaker for reproduction thereof. The source signal is also applied to a reverberation circuit. The reverberation circuit includes at least two reverberation signal generators which provide different predetermined time delays to the source signal for converting it to two reverberation signals. At least one phase inverter is connected to invert at least one of the two reverberation signals before the reverberation signals are reproduced.

摘要翻译： 一种用于在声学空间中产生改善的声场的装置。 该装置包括用于产生源信号的信号源。 源信号被施加到扬声器以进行再现。 源信号也被应用于混响电路。 混响电路包括至少两个混响信号发生器，其向源信号提供不同的预定时间延迟以将其转换为两个混响信号。 连接至少一个相位逆变器以在再现混响信号之前反转两个混响信号中的至少一个。

公开(公告)号：US4694497A

公开(公告)日：1987-09-15

申请号：US844680

申请日：1986-03-27

申请人： Junichi Kasai ,  Hiroshi Imai ,  Hiroshi Tsuda

发明人： Junichi Kasai ,  Hiroshi Imai ,  Hiroshi Tsuda

IPC分类号： H04S1/00 ,  G10H1/00 ,  H03G3/00

CPC分类号： G10H1/0091 ,  H03G3/00 ,  G10H2210/281 ,  G10H2210/295

摘要： An automotive audio system separates audio signals from an audio signal source into first and second components. The first component of the audio signal is sent directly to a first main amplifier through a first audio signal path and reproduced through a main speaker or speakers. On the other hand, the second component of the audio signal is sent to a second main amplifier through a second audio signal path. An echo system is provided with the second audio signal path, which echo system induces echos in the audio sound to be reproduced through the second main amplifier. The echo system is associated with a discriminator circuit which receives an audio signal output from the audio signal source and derives an echo system control signal on the basis of the audio signal. The echo signal control signal is fed to the echo system for controlling operation of the echo system.

摘要翻译： 汽车音响系统将音频信号与音频信号源分离成第一和第二组件。 音频信号的第一分量通过第一音频信号路径直接发送到第一主放大器，并通过主扬声器或扬声器再现。 另一方面，音频信号的第二分量通过第二音频信号路径发送到第二主放大器。 回波系统设置有第二音频信号路径，该回波系统在通过第二主放大器再现的音频声音中引起回波。 回波系统与识别器电路相关联，鉴频器电路接收从音频信号源输出的音频信号，并根据音频信号导出回波系统控制信号。 回波信号控制信号被馈送到回波系统以控制回波系统的操作。

公开(公告)号：US5129004A

公开(公告)日：1992-07-07

申请号：US434503

申请日：1989-11-13

申请人： Hiroshi Imai ,  Junichi Kasai ,  Hiroshi Tsuda

发明人： Hiroshi Imai ,  Junichi Kasai ,  Hiroshi Tsuda

IPC分类号： G10H1/00 ,  H04S1/00

CPC分类号： G10H1/0091 ,  H04S1/002 ,  G10H2210/281 ,  G10H2210/295

摘要： An automotive audio system separates audio signals from an audio signal source into first and second components. The first component of the audio signal is sent directly to a first main amplifier and reproduced through a main speaker or speakers. On the other hand, the second component of the audio signal is sent to a second main amplifier after a predetermined delay time determined by a delay circuit. The delayed second component of the audio signal is reproduced through a auxiliary speaker or speakers after the predetermined delay time. The first and auxiliary speakers are distinct and preferably located at different points in the vehicle compartment. As a result, the directly reproduced first component and the delayed second component are reproduced through different audio sound sources. This affords the listener higher-quality audio sound and better ambience. If necessary, an echo signal generator may be added to the second component reproduction system to provide an echo effect. In this case, since the second component is reproduced by the second speaker or speakers which are different from the main speaker or speakers which reproduce the direct first component, the echo effect can be optimized for good ambience.

摘要翻译： 汽车音响系统将音频信号与音频信号源分离成第一和第二组件。 音频信号的第一分量被直接发送到第一主放大器并通过主扬声器或扬声器再现。 另一方面，在由延迟电路确定的预定延迟时间之后，将音频信号的第二分量发送到第二主放大器。 在预定的延迟时间之后，通过辅助扬声器或扬声器再现音频信号的延迟的第二分量。 第一和辅助扬声器是不同的，优选地位于车厢的不同点。 结果，直接再现的第一分量和延迟的第二分量通过不同的音频声源再现。 这为听众提供了更高质量的音频声音和更好的氛围。 如果需要，可以将回波信号发生器添加到第二分量再现系统以提供回声效果。 在这种情况下，由于与再现直接第一分量的主扬声器或扬声器不同的第二扬声器或扬声器再现第二分量，所以可以优化回声效果以获得良好的氛围。

公开(公告)号：US4703502A

公开(公告)日：1987-10-27

申请号：US823250

申请日：1986-01-28

申请人： Junichi Kasai ,  Hiroshi Imai ,  Hiroshi Tsuda

发明人： Junichi Kasai ,  Hiroshi Imai ,  Hiroshi Tsuda

IPC分类号： H04S3/00 ,  H04R5/00

CPC分类号： H04S3/00 ,  H04R2499/13

摘要： A system for reproducing stereophonic signals to create a stereophonic sound image in front of each of listeners sitting side by side in a compartment. The system includes a right-hand loudspeaker positioned relative to the right of the first listener sitting on the right, a left-hand loudspeaker positioned relative to the left of the second listener sitting on the left, and a center loudspeaker positioned between the right- and left-hand loudspeakers. A signal generator generates R and L stereophonic signals. The R signal is applied to drive the right- and left-hand loudspeakers. The L signal is fed to drive the center loudspeaker. The signal generator includes a circuit for attenuating the R signal to the right-hand loudspeaker and a circuit for attenuating the R signal to the left-hand loudspeaker.

摘要翻译： 用于再现立体声信号以在每个听众面前并排坐在隔间中的立体声声像的系统。 该系统包括相对于位于右侧的第一听众的右侧定位的右侧扬声器，相对于位于左侧的第二听众的左侧定位的左侧扬声器和位于右侧扬声器之间的中央扬声器， 和左手扬声器。 信号发生器产生R和L立体声信号。 R信号用于驱动左右扬声器。 进给L信号以驱动中置扬声器。 信号发生器包括用于衰减R信号到右侧扬声器的电路和用于衰减到左手扬声器的R信号的电路。

公开(公告)号：US09195115B2

公开(公告)日：2015-11-24

申请号：US13501990

申请日：2010-10-04

申请人： Hiroshi Imai

发明人： Hiroshi Imai

IPC分类号： G03B21/14 ,  G03B3/00 ,  G02B3/08 ,  G02B15/00 ,  G02B27/10 ,  G02B27/14 ,  G02B27/48 ,  G03B21/00

CPC分类号： G03B3/00 ,  G02B3/08 ,  G02B15/00 ,  G02B27/104 ,  G02B27/145 ,  G02B27/48 ,  G03B21/00 ,  G03B21/006

摘要： An image projection device includes: a variable-focus lens (2) in which focal length can be changed; scanning means (3) that scans a projection surface (12) by means of a light beam that is condensed by the variable-focus lens (2); distance-measuring means (9) that measures the distance from the variable-focus lens (2) to the projection surface (12); and control means (4) that controls the variable-focus lens (2) such that the focal length of the variable-focus lens (2) is greater than the distance measured by means of the distance-measuring means (9).

摘要翻译： 一种图像投影装置包括：焦距可变的可变焦距透镜; 扫描装置（3），其通过由可变焦距透镜（2）会聚的光束扫描投影表面（12）; 距离测量装置（9），其测量从可变焦距透镜（2）到投影表面（12）的距离; 以及控制可变焦距透镜（2）的控制装置（4），使得可变焦距透镜（2）的焦距大于通过距离测量装置（9）测量的距离。

公开(公告)号：US09097965B2

公开(公告)日：2015-08-04

申请号：US13502030

申请日：2010-10-04

申请人： Hiroshi Imai

发明人： Hiroshi Imai

IPC分类号： G03B21/26 ,  G03B21/28 ,  G01B11/28 ,  G02B26/08 ,  G02B26/02 ,  H04N3/02 ,  G03B21/14 ,  G02B3/08 ,  G02B15/00 ,  G02B27/10 ,  G02B27/14 ,  G02B27/48

CPC分类号： G03B21/14 ,  G02B3/08 ,  G02B15/00 ,  G02B27/104 ,  G02B27/144 ,  G02B27/145 ,  G02B27/48 ,  G03B21/2033 ,  G03B21/208 ,  H04N9/3129

摘要： An image projection device includes beam generation means that emits a plurality of beams in one direction such that the plurality of beams are superimposed each other, a convergence angle of each beam being different from each other; and scanning means that scans projection surface with the beams emitted from beam generation means.

摘要翻译： 图像投影装置包括：光束产生装置，其在一个方向上发射多个光束，使得多个光束彼此重叠，每个光束的会聚角彼此不同; 以及扫描装置，其用从光束产生装置发射的光束扫描投影面。