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    DIP FILTER FREQUENCY CHARACTERISTIC DECISION METHOD
    2.
    发明授权
    DIP FILTER FREQUENCY CHARACTERISTIC DECISION METHOD 有权
    一种用于确定屏障过滤器的频率特性

    公开(公告)号：EP1600941B1

    公开(公告)日：2010-04-28

    申请号：EP04714019.9

    申请日：2004-02-24

    申请人： Toa Corporation ,  Etani Electronics Co., Ltd.

    发明人： HIGASHIHARA, Daisuke ,  HINO, Shokichiro ,  TSUCHIYA, Koichi ,  ENDO, Tomohiko

    IPC分类号： G10K15/00 ,  H04R3/02

    CPC分类号： H04R29/007 ,  G01H13/00 ,  H04R3/04 ,  H04R2227/007

    摘要： Resonance frequencies f2, f3 detected in a resonance space are decided to be dip center frequencies. According to the measurement values obtained in a loudspeaker and a microphone in the resonance space, a basic amplitude frequency characteristic Ca and a target amplitude frequency characteristic Cd are obtained. The target amplitude frequency characteristic Cd has a greater smoothness than the basic amplitude frequency characteristic Ca on the frequency axis. The dip attenuation level and sharpness are decided according to the difference between the basic amplitude frequency characteristic Ca and the target amplitude frequency characteristic Cd at the dip center frequencies f2, f3 and in the vicinity thereof.

    Acoustic characteristic adjustment device
    6.
    发明公开
    Acoustic characteristic adjustment device 有权
    设备为适应声学特性

    公开(公告)号：EP1553804A3

    公开(公告)日：2006-12-20

    申请号：EP05000151.0

    申请日：2005-01-05

    申请人： Pioneer Corporation ,  Etani Electronics Co., Ltd.

    发明人： Kato, Shinjiro, Kawagoe Koujou ,  Shimizu, Akira, Kawagoe Koujou ,  Oshima, Moriyuki, Kawagoe Koujou ,  Nakazato, Mitsuo, Kawagoe Koujou ,  Kobayashi, Shigeki, Kawagoe Koujou ,  Toyoda, Kunio ,  Takano, Koji ,  Hino, Shokichiro ,  Endo, Tomohiko ,  Tsuchiya, Kouichi

    IPC分类号： H04S3/00 ,  H04R7/00

    CPC分类号： H04S7/302 ,  H04S3/00 ,  H04S7/307 ,  H04S7/40

    摘要： An acoustic characteristic adjustment device (1) whose acoustic characteristics can be adjusted freely by a listener. The device (1) comprises signal processing units (Al-Ap) for performing signal processing on audio signals (X1-Xp) and outputting the resultant to speakers of respective channels. The signal processing units are composed of high frequency convolution arithmetic sections (B1-Bp), low frequency convolution arithmetic sections (C1-Cp), and delay sections (D1-Dp,E1-Ep). The acoustic characteristic adjustment device (1) further comprises: an operation section (30) from which the listener or the like inputs a target characteristic in order to adjust a desired acoustic characteristic; an impulse characteristic control section (21); and a delay time control section (22). Based on the target characteristic, the impulse characteristic control section (21) calculates impulse response data (hlm-hpm, hln-hpn) to make the arithmetic sections (B1-Bp, C1-Cp)) perform respective convolution arithmetics. The delay time control section calculates alignment delay times necessary for sounds emitted from the speakers to reach a listening position or the like, respectively. The delay time control section also calculates correction times for compensating respective deviations in phase between output signals (X11-Xp1) in a high frequency band, which are output from the high frequency convolution arithmetic sections (B1-Bp) as a result of convolution arithmetics, and output signal (X12-Xp2) in a low frequency band, which are output from the low frequency convolution arithmetic sections. Times obtained by correcting the alignment delay times with the correction times are set as the delay times of the delay sections (D1-Dp, E1-Ep), respectively.

    IMPULSE RESPONSE MEASURING METHOD AND IMPULSE RESPONSE MEASURING DEVICE
    7.
    发明公开
    IMPULSE RESPONSE MEASURING METHOD AND IMPULSE RESPONSE MEASURING DEVICE 审中-公开
    VERFAHREN UND VORRICHTUNG ZUR MESSUNG VON IMPULSREAKINGEN

    公开(公告)号：EP2455768A1

    公开(公告)日：2012-05-23

    申请号：EP10799765.2

    申请日：2010-07-07

    申请人： Etani Electronics Co., Ltd.

    发明人： HINO, Shokichiro ,  KOIDE, Hiroshi ,  SHOJI, Akihiko ,  TSUCHIYA, Koichi ,  ENDO, Tomohiko ,  XIE, Qiusheng

    IPC分类号： G01R27/28 ,  G01H3/08 ,  G01H17/00 ,  G10K15/00

    CPC分类号： G01H17/00 ,  G01R27/28

    摘要： An impulse response measurement with high precision is made possible with a simple device or signal processing, even if sampling clocks on the transmitting side and the receiving side are asynchronous at the time of measuring an impulse response of a measured system. An impulse response measuring method includes an input signal generating step of generating an input signal of an arbitrary waveform to be input to a measured system by using a synchronization signal having a first sampling clock frequency, a signal converting step of performing conversion on a measured signal output from the measured system into a discrete value system by using a synchronization signal having a second sampling clock frequency, and an inverse filter correcting step of correcting at least a phase of an inverse filter which is an inverse function of a function showing a frequency characteristic of the input signal according to a frequency ratio of the first sampling clock frequency and the second sampling clock frequency. Then, the impulse response of the measured system is measured using the inverse filter after correction.

    摘要翻译： 即使在测量系统的脉冲响应测量时，发射侧和接收侧的采样时钟是异步的，通过简单的设备或信号处理也可以实现高精度的脉冲响应测量。 一种脉冲响应测量方法，包括：输入信号产生步骤，通过使用具有第一采样时钟频率的同步信号，生成要输入到测量系统的任意波形的输入信号;信号转换步骤，对测量信号进行转换 通过使用具有第二采样时钟频率的同步信号将测量的系统输出到离散值系统;以及反相滤波器校正步骤，校正作为示出频率特性的函数的反函数的逆滤波器的至少相位 根据第一采样时钟频率和第二采样时钟频率的频率比来输入信号。 然后，使用校正后的逆滤波器测量测量的系统的脉冲响应。

    DIP FILTER FREQUENCY CHARACTERISTIC DECISION METHOD
    9.
    发明公开
    DIP FILTER FREQUENCY CHARACTERISTIC DECISION METHOD 有权
    VERFAHREN ZUR BESTIMMUNG DER FREQUENZCHARAKTERISTIK EINES SPERRFILTERS

    公开(公告)号：EP1600941A1

    公开(公告)日：2005-11-30

    申请号：EP04714019.9

    申请日：2004-02-24

    申请人： Toa Corporation ,  Etani Electronics Co., Ltd.

    发明人： HIGASHIHARA, Daisuke ,  HINO, Shokichiro ,  TSUCHIYA, Koichi ,  ENDO, Tomohiko

    IPC分类号： G10K15/00 ,  H04R3/02

    CPC分类号： H04R29/007 ,  G01H13/00 ,  H04R3/04 ,  H04R2227/007

    摘要： Resonant frequencies f2 and f3 detected in a resonant space are determined as center frequencies of a dip. Based on measurement values at a speaker and a microphone in the resonant space, a basic amplitude frequency characteristic Ca and a target amplitude frequency characteristic Cd are found. A smoothness degree on a frequency axis is larger in the target amplitude frequency characteristic Cd than the basic amplitude frequency characteristic Ca. A damping level and quality factor of the dip are determined based on a difference between the basic amplitude frequency characteristic Ca and the target amplitude frequency characteristic Cd in the center frequencies f2 and f3 of the dip and frequencies near the center frequencies.

    摘要翻译： 在谐振空间中检测到的谐振频率f2和f3被确定为倾角的中心频率。 基于谐振空间中的扬声器和麦克风的测量值，找到基本振幅频率特性Ca和目标振幅频率特性Cd。 频率轴上的平滑度在目标振幅频率特性Cd中大于基本振幅频率特性Ca。 基于基本振幅频率特性Ca和中心频率f2和f3中的中心频率f2和f3之间的中心频率附近的频率的频率特性Cd之间的差异来确定倾角的阻尼水平和质量因子。

    Acoustic characteristic adjustment device
    10.
    发明公开
    Acoustic characteristic adjustment device 有权
    Vorrichtung zur Anpassung akustischer Eigenschaften

    公开(公告)号：EP1553804A2

    公开(公告)日：2005-07-13

    申请号：EP05000151.0

    申请日：2005-01-05

    申请人： Pioneer Corporation ,  Etani Electronics Co., Ltd.

    发明人： Kato, Shinjiro, Kawagoe Koujou ,  Shimizu, Akira, Kawagoe Koujou ,  Oshima, Moriyuki, Kawagoe Koujou ,  Nakazato, Mitsuo, Kawagoe Koujou ,  Kobayashi, Shigeki, Kawagoe Koujou ,  Toyoda, Kunio ,  Takano, Koji ,  Hino, Shokichiro ,  Endo, Tomohiko ,  Tsuchiya, Kouichi

    IPC分类号： H04S3/00 ,  H04R7/00

    CPC分类号： H04S7/302 ,  H04S3/00 ,  H04S7/307 ,  H04S7/40

    摘要： An acoustic characteristic adjustment device (1) whose acoustic characteristics can be adjusted freely by a listener. The device (1) comprises signal processing units (Al-Ap) for performing signal processing on audio signals (X1-Xp) and outputting the resultant to speakers of respective channels. The signal processing units are composed of high frequency convolution arithmetic sections (B1-Bp), low frequency convolution arithmetic sections (C1-Cp), and delay sections (D1-Dp,E1-Ep). The acoustic characteristic adjustment device (1) further comprises: an operation section (30) from which the listener or the like inputs a target characteristic in order to adjust a desired acoustic characteristic; an impulse characteristic control section (21); and a delay time control section (22). Based on the target characteristic, the impulse characteristic control section (21) calculates impulse response data (hlm-hpm, hln-hpn) to make the arithmetic sections (B1-Bp, C1-Cp)) perform respective convolution arithmetics. The delay time control section calculates alignment delay times necessary for sounds emitted from the speakers to reach a listening position or the like, respectively. The delay time control section also calculates correction times for compensating respective deviations in phase between output signals (X11-Xp1) in a high frequency band, which are output from the high frequency convolution arithmetic sections (B1-Bp) as a result of convolution arithmetics, and output signal (X12-Xp2) in a low frequency band, which are output from the low frequency convolution arithmetic sections. Times obtained by correcting the alignment delay times with the correction times are set as the delay times of the delay sections (D1-Dp, E1-Ep), respectively.

    摘要翻译： 声学特性调节装置（1），其声学特性可由听者自由调节。 装置（1）包括用于对音频信号（X1-Xp）执行信号处理的信号处理单元（Al-Ap），并将结果输出到相应通道的扬声器。 信号处理单元由高频卷积运算部（B1-Bp），低频卷积运算部（C1-Cp）和延迟部（D1-Dp，E1-Ep）构成。 声学特性调节装置（1）还包括：操作部（30），收听者等从中输入目标特性，以便调节期望的声学特性; 脉冲特性控制部（21）; 和延迟时间控制部分（22）。 基于目标特性，脉冲特性控制部（21）计算脉冲响应数据（hlm-hpm，hln-hpn），使运算部（B1-Bp，C1-Cp）进行各自的卷积运算。 延迟时间控制部分分别计算从扬声器发出的声音到达聆听位置等所需的对准延迟时间。 延迟时间控制部分还计算用于补偿从高频卷积算术部分（B1-Bp）输出的高频带中的输出信号（X11-Xp1）之间的相位偏差的校正时间，作为卷积算术 ，以及从低频卷积运算部输出的低频带的输出信号（X12-Xp2）。 通过用校正时间校正对准延迟时间获得的时间分别被设置为延迟部分（D1-Dp，E1-Ep）的延迟时间。