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：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：US08041046B2

公开(公告)日：2011-10-18

申请号：US11631186

申请日：2005-06-29

申请人： Yoshiki Ohta ,  Takashi Mitsuhashi ,  Teruo Baba

发明人： Yoshiki Ohta ,  Takashi Mitsuhashi ,  Teruo Baba

IPC分类号： H03G3/00 ,  H04R29/00 ,  H04B3/20

CPC分类号： G10K15/08 ,  H04R5/027 ,  H04S7/302 ,  H04S7/305

摘要： The present invention provides a sound field correcting system and a reverberation adjusting apparatus capable of correcting a reverberation time characteristic by an easy operation without setting a complicated parameter. A surround system 100 has a sound reproducing apparatus 120 for adjusting a reverberation component of sound on the basis of a reverberation characteristic of a listening room 10 and amplifying the sound by a speaker system 130; and a microphone 140 for collecting the amplified sound in a specific listening position in the listening room 10. The sound reproducing apparatus 120 includes: a test signal generating device 124 for generating a test signal; a space characteristic analyzer 127 for recognizing an attenuation characteristic indicative of attenuation with time in the listening room on the basis of the obtained amplified test signal, and calculating attenuation time in the listening position of the amplified sound on the basis of the recognized attenuation characteristic; and a signal processor 200 for adjusting the reverberation characteristic of the listening room 10.

摘要翻译： 本发明提供一种能够通过简单的操作来校正混响时间特性的声场校正系统和混响调节装置，而不需要设置复杂的参数。 环绕声系统100具有声音再现装置120，用于根据听音室10的混响特性调节声音的混响分量，并通过扬声器系统130对声音进行放大; 以及用于在收听室10中的特定聆听位置收集放大的声音的麦克风140.声音再现装置120包括：测试信号产生装置124，用于产生测试信号; 基于所获得的放大测试信号，在收听室中识别表示衰减随时间衰减的衰减特性的空间特征分析器127，并且基于所识别的衰减特性来计算放大声音的收听位置的衰减时间; 以及用于调节听音室10的混响特性的信号处理器200。

公开(公告)号：US08023662B2

公开(公告)日：2011-09-20

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 ,  H04R29/00 ,  H03G3/00

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：US20090220100A1

公开(公告)日：2009-09-03

申请号：US11631186

申请日：2005-06-29

申请人： Yoshiki Ohta ,  Takashi Mitsuhashi ,  Teruo Baba

发明人： Yoshiki Ohta ,  Takashi Mitsuhashi ,  Teruo Baba

IPC分类号： H03G3/00

CPC分类号： G10K15/08 ,  H04R5/027 ,  H04S7/302 ,  H04S7/305

摘要： The present invention provides a sound field correcting system and a reverberation adjusting apparatus capable of correcting a reverberation time characteristic by an easy operation without setting a complicated parameter. A surround system 100 has a sound reproducing apparatus 120 for adjusting a reverberation component of sound on the basis of a reverberation characteristic of a listening room 10 and amplifying the sound by a speaker system 130; and a microphone 140 for collecting the amplified sound in a specific listening position in the listening room 10. The sound reproducing apparatus 120 includes: a test signal generating device 124 for generating a test signal; a space characteristic analyzer 127 for recognizing an attenuation characteristic indicative of attenuation with time in the listening room on the basis of the obtained amplified test signal, and calculating attenuation time in the listening position of the amplified sound on the basis of the recognized attenuation characteristic; and a signal processor 200 for adjusting the reverberation characteristic of the listening room 10.

摘要翻译： 本发明提供一种能够通过简单的操作来校正混响时间特性的声场校正系统和混响调节装置，而不需要设置复杂的参数。 环绕声系统100具有声音再现装置120，用于根据听音室10的混响特性调节声音的混响分量，并通过扬声器系统130对声音进行放大; 以及用于在收听室10中的特定聆听位置收集放大的声音的麦克风140.声音再现装置120包括：测试信号产生装置124，用于产生测试信号; 基于所获得的放大测试信号，在收听室中识别表示衰减随时间衰减的衰减特性的空间特征分析器127，并且基于所识别的衰减特性来计算放大声音的收听位置的衰减时间; 以及用于调节听音室10的混响特性的信号处理器200。

公开(公告)号：US20080089522A1

公开(公告)日：2008-04-17

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： H04R5/00

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：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：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。