公开(公告)号：US06477255B1

公开(公告)日：2002-11-05

申请号：US09368348

申请日：1999-08-05

申请人： Minoru Yoshida ,  Fumio Matsushita ,  Satoshi Kumada ,  Yoshiki Ohta

发明人： Minoru Yoshida ,  Fumio Matsushita ,  Satoshi Kumada ,  Yoshiki Ohta

IPC分类号： H04B100

CPC分类号： H04R5/02 ,  H04R2499/13 ,  H04S1/002

摘要： A rear speaker and a front speaker are provided in a room. A microphone is disposed at a listening position between the front and rear speakers for picking up a first sound from the front speakers and a second sound from the rear speaker. Time lags of the first sound and the second sound is obtained from the outputs of the microphone, and the time difference between the time lags is obtained. An antiphase audio signal opposite to a reflected composite signal included in the first sound picked up by the microphone is provided by the sound field correcting circuit. The antiphase audio signal with the same amplitude is delayed based on the time difference and emitted from the rear speaker so as to cancel the reflected composite signal.

摘要翻译： 房间内设有后置扬声器和前置扬声器。 麦克风设置在前扬声器和后扬声器之间的收听位置，用于拾取来自前置扬声器的第一声音和来自后置扬声器的第二声音。 从麦克风的输出获得第一声音的时间滞后，并且获得第二声音，并且获得时间滞后之间的时间差。 由声场校正电路提供与由麦克风拾取的第一声音中包括的反射复合信号相反的反相音频信号。 具有相同幅度的反相音频信号基于时间差被延迟并从后置扬声器发射，以便消除反射的复合信号。

公开(公告)号：US5854847A

公开(公告)日：1998-12-29

申请号：US15796

申请日：1998-01-29

申请人： Minoru Yoshida ,  Keishi Saito ,  Fumio Matsushita ,  Katsumi Amano ,  Satoshi Kumada ,  Yoshiki Ohta

发明人： Minoru Yoshida ,  Keishi Saito ,  Fumio Matsushita ,  Katsumi Amano ,  Satoshi Kumada ,  Yoshiki Ohta

IPC分类号： B60R11/02 ,  G10K15/00 ,  H03G5/02 ,  H04R5/02 ,  H04S5/02 ,  H04B1/00

CPC分类号： H04R5/00 ,  H04S2400/05 ,  H04S5/005

摘要： A speaker system for use in an automobile vehicle, comprises: pair of side speakers disposed on left and right sides in a front section within the automobile vehicle; a central speaker disposed in a middle position between the two side speakers; a pair of delay circuits connected on two signal lines leading to the side speakers disposed on the left and right sides within the vehicle; an adder connected between the left and right channels to add together the electric signals transmitted from the left and right channels so as to produce a sum signal; and a band pass filter connected on a signal line leading to the central speaker, said band pass filter being constructed and adjusted to eliminate a high frequency signal component. The sum signal fed from the adder is passed through the band pass filter before being applied to the central speaker.

摘要翻译： 一种用于汽车的扬声器系统，包括：一对侧扬声器，其设置在汽车内的前部的左侧和右侧; 设置在两侧扬声器之间的中间位置的中央扬声器; 一对延迟电路，其连接在通向设置在车辆内的左侧和右侧的侧扬声器的两根信号线上; 连接在左右通道之间的加法器，用于将从左右通道发送的电信号相加，以产生和信号; 连接在通向中央扬声器的信号线上的带通滤波器，构成并调整所述带通滤波器以消除高频信号分量。 从加法器馈送的和信号在施加到中央扬声器之前通过带通滤波器。

公开(公告)号：US6038325A

公开(公告)日：2000-03-14

申请号：US15794

申请日：1998-01-29

申请人： Minoru Yoshida ,  Fumio Matsushita ,  Satoshi Kumada ,  Yoshiki Ohta

发明人： Minoru Yoshida ,  Fumio Matsushita ,  Satoshi Kumada ,  Yoshiki Ohta

IPC分类号： B60R11/02 ,  G10K15/00 ,  H03G5/02 ,  H04R3/04 ,  H04R3/12 ,  H04R5/02 ,  H04S5/02 ,  H04B1/00

CPC分类号： H04R5/02

摘要： A speaker system for use in an automobile vehicle, comprises: a pair of front speakers for converting electric signals fed from a two-channel source into sound signals; a band pass filter for extracting a signal component having a frequency substantially satisfying .lambda.=2L when the automobile vehicle has a length L; a phase adjusting circuit for adjusting the phase of an electric signal; and a rear speaker for converting an electric signal fed through the phase adjusting circuit and the band pass filter into a sound signal.

摘要翻译： 一种用于汽车的扬声器系统，包括：一对前置扬声器，用于将从两声道信号源馈送的电信号转换成声音信号; 带通滤波器，用于当汽车车辆具有长度L时提取具有基本上满足λ= 2L的频率的信号分量; 相位调整电路，用于调整电信号的相位; 以及后置扬声器，用于将通过相位调整电路馈送的电信号和带通滤波器转换成声音信号。

公开(公告)号：US20120300955A1

公开(公告)日：2012-11-29

申请号：US13578727

申请日：2010-02-15

申请人： Akihiro Iseki ,  Yoshiki Ohta ,  Yoshitomo Imanishi ,  Kensaku Obata

发明人： Akihiro Iseki ,  Yoshiki Ohta ,  Yoshitomo Imanishi ,  Kensaku Obata

IPC分类号： G10K11/36

CPC分类号： G10K11/1786 ,  G10K11/178 ,  G10K2210/12821 ,  H04R3/02

摘要： An active vibration noise control device cancels vibration noise by making plural speakers generate control sounds. The active vibration noise control device selects one or more speakers which output the control sounds, from plural speakers, based on a relationship between (1) a first phase difference which corresponds to a difference between phase characteristics of the vibration noise from a vibration noise source to an evaluation point and phase characteristics of the vibration noise from the vibration noise source to a pseudo evaluation point and (2) a second phase difference for each of the plural speakers corresponding to a difference between phase characteristics of the control sound from the speaker to the evaluation point and phase characteristics of the control sound from the speaker to the pseudo evaluation point. Therefore, it stably decreases the vibration noise at the pseudo evaluation point independently of a frequency band of the vibration noise.

摘要翻译： 主动振动噪声控制装置通过使多个扬声器产生控制声音来消除振动噪声。 主动振动噪声控制装置根据（1）对应于来自振动噪声源的振动噪声的相位特性之差的第一相位差之间的关系，从多个扬声器中选择输出控制声音的一个或多个扬声器 涉及从振动噪声源到伪评估点的振动噪声的评估点和相位特性，以及（2）对应于来自扬声器的控制声音的相位特性之间的差异的多个扬声器中的每一个的第二相位差 控制声音从扬声器到伪评估点的评估点和相位特性。 因此，独立于振动噪声的频带，可以稳定地降低伪评估点的振动噪声。

公开(公告)号：US20120033821A1

公开(公告)日：2012-02-09

申请号：US13264065

申请日：2009-04-15

申请人： Yoshiki Ohta ,  Yoshitomo Imanishi ,  Tomomi Hasegawa ,  Manabu Nohara ,  Yusuke Soga

发明人： Yoshiki Ohta ,  Yoshitomo Imanishi ,  Tomomi Hasegawa ,  Manabu Nohara ,  Yusuke Soga

IPC分类号： G10K11/16

CPC分类号： G10K11/1782 ,  G10K11/17854 ,  G10K11/17883 ,  G10K2210/1282 ,  G10K2210/503 ,  H04R2499/13 ,  H04S7/301

摘要： An active vibration noise control device having a pair of speakers, including: a basic signal generating unit generating a basic signal based on a vibration noise frequency; an adaptive notch filter generating a first control signal provided to one speaker using a first filter coefficient and generating a second control signal provided to the other speaker using a second filter coefficient to cancel the generated vibration noise; a microphone detecting cancellation error between the vibration noise and the control sounds and outputting an error signal; a reference signal generating unit generating a reference signal based on a transfer function from the speakers to the microphone; a filter coefficient updating unit updating first and second filter coefficients, minimize the error signal; and a phase difference limiting unit limiting a phase difference between control sounds generated by different speakers. Therefore, it becomes possible to appropriately ensure a uniform and wide noise-cancelled area.

摘要翻译： 一种具有一对扬声器的主动振动噪声控制装置，包括：基本信号产生单元，其基于振动噪声频率产生基本信号; 自适应陷波滤波器，使用第一滤波器系数产生提供给一个扬声器的第一控制信号，并使用第二滤波器系数产生提供给另一个扬声器的第二控制信号，以消除所产生的振动噪声; 麦克风检测振动噪声和控制声音之间的消除误差，并输出误差信号; 参考信号产生单元，基于从扬声器到麦克风的传递函数产生参考信号; 滤波器系数更新单元更新第一和第二滤波器系数，使误差信号最小化; 以及限制由不同扬声器产生的控制声音之间的相位差的相位差限制单元。 因此，可以适当地确保均匀且宽的噪声消除区域。

公开(公告)号：US08094827B2

公开(公告)日：2012-01-10

申请号：US11632963

申请日：2005-07-13

申请人： Teruo Baba ,  Yoshiki Ohta ,  Takashi Mitsuhashi

发明人： Teruo Baba ,  Yoshiki Ohta ,  Takashi Mitsuhashi

IPC分类号： H03G3/00 ,  H04R29/00 ,  H04B1/00

CPC分类号： H04S7/305 ,  H04R2203/12 ,  H04S3/02 ,  H04S7/301

摘要： The present invention provides a sound reproducing system and a sound reproducing apparatus that can provide a high realistic sensation to a user, without having to do a troublesome task on the user's side.A surround-sound system (100) includes: an array speaker system (20) that is formed with speaker units SPU having the same characteristics; and a signal processing apparatus (120) that drives the speaker units SPU independently of one another and amplifies an audio signal. The signal processing apparatus (120) includes: a signal processing control unit (260) that calculates each filter coefficient for each of the speaker units so as to generate reverberant components to be reflected by a wall surface of a listening room (10) when the audio signal or test signal is amplified through the array speaker system (20) based on preset reverberant characteristics; and a filtering unit (250) that divides the audio signal or test signal by the same number as the number of speaker units so as to obtain unit signals, and then performs signal processing on each of the unit signals divided based on each of the filter coefficients.

摘要翻译： 本发明提供了一种可以向用户提供高逼真感的声音再现系统和声音再现装置，而无需在用户方面进行麻烦的任务。 环绕声系统（100）包括：阵列扬声器系统（20），其形成有具有相同特征的扬声器单元SPU; 以及独立地驱动扬声器单元SPU并放大音频信号的信号处理装置（120）。 信号处理装置（120）包括：信号处理控制单元（260），其计算每个扬声器单元的每个滤波器系数，以便产生混响分量，以便当听音室（10）的壁面反射时， 音频信号或测试信号通过阵列扬声器系统（20）基于预设的混响特性被放大; 以及滤波单元（250），其将音频信号或测试信号除以与扬声器单元数相同的数量，以获得单位信号，然后基于每个滤波器分割的每个单位信号执行信号处理 系数。

公开(公告)号：US20090232321A1

公开(公告)日：2009-09-17

申请号：US11994067

申请日：2006-06-14

申请人： Yoshiki Ohta ,  Kensaku Obata

发明人： Yoshiki Ohta ,  Kensaku Obata

IPC分类号： H03G3/00

CPC分类号： H04S5/02

摘要： An audio signal processing apparatus includes a cutout unit, a correlation calculating unit, a spectrum calculating unit, a coefficient calculating unit, and an assigning unit. The cutout unit cuts out audio signals of plural channels by a time frame. The correlation calculating unit calculates a correlation value between respective signals of the plural channels included in a predetermined time frame cut out by the cutout unit. The spectrum calculating unit calculates spectrum information indicative of spectral characteristics concerning a signal of a given channel cut out by the cutout unit. The coefficient calculating unit calculates a coefficient to be multiplied by the signal of the given channel, based on the correlation value and the spectrum information. The assigning unit multiplies the coefficient by the signal of the given channel and assigns the multiplied signal to channels other than the given channel.

摘要翻译： 音频信号处理装置包括切出单元，相关计算单元，频谱计算单元，系数计算单元和分配单元。 切出单元按时间间隔切出多个频道的音频信号。 相关计算单元计算由切出单元切出的预定时间帧中包括的多个频道的各个信号之间的相关值。 频谱计算单元计算指示关于由切出单元切出的给定频道的信号的频谱特性的频谱信息。 系数计算单元基于相关值和频谱信息来计算要乘以给定信道的信号的系数。 分配单元将系数乘以给定信道的信号，并将相乘的信号分配给除了给定信道之外的信道。

公开(公告)号：US20090232318A1

公开(公告)日：2009-09-17

申请号：US12306542

申请日：2007-06-03

申请人： Yoshiki Ohta

发明人： Yoshiki Ohta

IPC分类号： H04B15/00 ,  H04R29/00

CPC分类号： H04R29/001 ,  H04R2430/03

摘要： A loudspeaker output correcting device operable under control of a control element, and comprising a first loudspeaker for outputting a first test signal, a second loudspeaker for outputting a second sound signal including a second test signal such that the phase of the second test signal is almost the same as that of the first one and when the second test signal is combined with the first one, the power characteristic is a constant value, sound collecting element for collecting the outputted first and second test signals, computing element for computing the difference between the first distance between the first loudspeaker and the sound collecting element and the second distance; between the second loudspeaker and the sound collecting element from the spectrum of the combined signal produced by combining the collected first and second signals, and correcting element for correcting the output relative characteristics of the first and second loudspeakers.

摘要翻译： 一种扬声器输出校正装置，其在控制元件的控制下可操作，并且包括用于输出第一测试信号的第一扬声器，用于输出包括第二测试信号的第二声音信号的第二扬声器，使得第二测试信号的相位几乎 与第一测试信号相同，当第二测试信号与第一测试信号组合时，功率特性是恒定值，用于收集输出的第一和第二测试信号的声音采集元件，用于计算第一和第二测试信号之间的差的计算元件 第一扬声器与收音元件之间的第一距离和第二距离; 从通过组合所收集的第一和第二信号产生的组合信号的频谱和第二和第二扬声器的输出相对特性的校正元件之间的第二扬声器和声音采集元件之间。

公开(公告)号：US20080019535A1

公开(公告)日：2008-01-24

申请号：US11631493

申请日：2005-07-05

申请人： Takashi Mitsuhashi ,  Yoshiki Ohta ,  Teruo Baba

发明人： Takashi Mitsuhashi ,  Yoshiki Ohta ,  Teruo Baba

IPC分类号： H04B3/20

CPC分类号： H04S7/305 ,  H04R5/027 ,  H04S7/301 ,  H04S7/302

摘要： The present invention provides a sound reproducing system capable of accurately analyzing a reverberation characteristic of amplified sound including an arrival direction of a reverberation component, which is more natural, and has higher realistic sensation. A surround system 100 has a speaker system 130, a signal processing apparatus 120 for recognizing a reverberation characteristic of a listening room 10 and adjusting a reverberation component of sound source to be amplified on the basis of the recognized reverberation characteristic, and a microphone array 140 constructed by a plurality of microphones M disposed in the listening room 10 and having the same characteristics, and in which distances among the microphones M are determined in advance. In the case where sound source is amplified and output from the speaker system 130 to the listening room 10, the microphone array 140 collects amplified sound in a specific listening position in the listening room 10.

摘要翻译： 本发明提供一种声音再现系统，其能够精确地分析放大声音的混响特性，包括更自然的混响成分的到来方向，并具有更高的逼真感。 环绕系统100具有扬声器系统130，用于识别听音室10的混响特性的信号处理装置120，并且基于所识别的混响特性调整要放大的声源的混响分量，以及麦克风阵列140 由设置在听音室10中并具有相同特性的多个麦克风M构成，并且预先确定麦克风M之间的距离。 在声源被放大并从扬声器系统130输出到聆听室10的情况下，麦克风阵列140在收听室10中收集特定聆听位置中的放大声音。

公开(公告)号：US07171009B2

公开(公告)日：2007-01-30

申请号：US09781274

申请日：2001-02-13

申请人： Yoshiki Ohta

发明人： Yoshiki Ohta

IPC分类号： H03G5/00

CPC分类号： H04S7/307 ,  H04S3/00 ,  H04S7/302

摘要： In correcting the sound field, the loudspeakers 6FL to 6WF are sounded by the noise. The attenuation factors of the inter-band attenuators ATF11 to ATFki for adjusting gains of the band-pass filters BPF11 to BPFki to the frequency in respective channels are corrected based on detection results of the reproduced sounds of the loudspeakers 6FL to 6WF. Then, the attenuation factors of the channel-to-channel attenuators ATG1 to ATG5 are corrected based on the detection results of the reproduced sounds of the loudspeakers 6FL to 6WF. Then, the delay times of the delay circuits DLY1 to DLY5 are corrected based on the detection results of the reproduced sounds of the loudspeakers 6FL to 6WF. Then, the attenuation factor of the channel-to-channel attenuator ATGk is corrected based on the detection result of the reproduced sound of the loudspeaker 6WF as the subwoofer, whereby the levels of the reproduced sounds reproduced by the loudspeakers 6FL to 6WF are adjusted to be made flat over the audio frequency band.

摘要翻译： 在校正声场时，扬声器6＆lt; 6＆gt;至6＆lt; WF＆lt; / S＆gt;被噪声所响。 用于将带通滤波器BPF 11的增益调整为BPF _{的带宽衰减器ATF 11到ATF K1i的衰减因子 基于扬声器6的再现声音到6WF的检测结果来校正各个声道中的频率的ki 。 然后，基于扬声器6的再现声音的检测结果来校正通道到通道衰减器ATG 1到ATG 5的衰减因子。 FL 至6WF 。 然后，基于扬声器6的再现声音的检测结果来校正延迟电路DLY 1到DLY 5的延迟时间 > 6WF 。 然后，基于作为重低音扬声器的重放声音的检测结果来校正信道到信道衰减器ATG 的衰减因子，由此 由扬声器6＆gt;至6＆lt; WF＆lt;＆lt; /＆gt;再现的再现声音的电平被调整为在音频频带上变得平坦。}