公开(公告)号：US08891781B2

公开(公告)日：2014-11-18

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 ,  G10K11/178 ,  A61F11/06 ,  H04S7/00

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：US20110058684A1

公开(公告)日：2011-03-10

申请号：US12991478

申请日：2008-05-27

申请人： Yoshiki Ohta ,  Kensaku Obata

发明人： Yoshiki Ohta ,  Kensaku Obata

IPC分类号： H04R1/40

CPC分类号： H04S1/00 ,  H04R2499/13

摘要： An audio reproduction device reproduces a one-channel signal from two speakers arranged in a sound field. The one-channel input signal is delayed by a delay element. The delay element performs a delay with different delay amount for a plurality of frequency bands. The signal delayed by the delay element is outputted to one of the two speakers and the input signal is directly outputted to the other one of the two speakers.

摘要翻译： 音频再现装置再现来自布置在声场中的两个扬声器的单声道信号。 单通道输入信号被延迟元件延迟。 延迟元件对于多个频带执行具有不同延迟量的延迟。 由延迟元件延迟的信号被输出到两个扬声器中的一个，并且输入信号被直接输出到两个扬声器中的另一个。

公开(公告)号：US20130279712A1

公开(公告)日：2013-10-24

申请号：US13977253

申请日：2011-01-06

申请人： Manabu Nohara ,  Yoshiki Ohta ,  Kensaku Obata ,  Yusuke Soga

发明人： Manabu Nohara ,  Yoshiki Ohta ,  Kensaku Obata ,  Yusuke Soga

IPC分类号： G10K11/178

CPC分类号： G10K11/178 ,  G10K11/17883 ,  G10K2210/1282 ,  G10K2210/3023 ,  G10K2210/3028

摘要： An active vibration noise control device obtains error signals corresponding to a cancellation error between vibration noise and control sounds generated by multiple speakers, from microphone(s), and actively controls the vibration noise. A basic signal generating unit generates a basic signal based on a vibration noise frequency. An adaptive notch filter unit generates control signals provided to each of the multiple speakers by applying a filter coefficient to the basic signal. A reference signal generating unit generates a reference signal from the basic signal based on multiple transfer characteristics from the multiple speakers to the one or more microphones. A filter coefficient updating unit updates the filter coefficient used by the adaptive notch filter unit so as to minimize the error signals. A controlling unit changes amplitude of the control signals of the speakers based on a similarity between the transfer characteristics and characteristics of the vibration noise.

摘要翻译： 主动振动噪声控制装置从麦克风获得对应于由多个扬声器产生的振动噪声和控制声之间的抵消误差的误差信号，并且主动地控制振动噪声。 基本信号生成单元基于振动噪声频率生成基本信号。 自适应陷波滤波器单元通过对基本信号施加滤波器系数来产生提供给多个扬声器中的每一个的控制信号。 参考信号生成单元基于从多个扬声器到一个或多个麦克风的多个传送特性，从基本信号生成参考信号。 滤波器系数更新单元更新由自适应陷波滤波器单元使用的滤波器系数，以使误差信号最小化。 控制单元基于传递特性和振动噪声的特性之间的相似度来改变扬声器的控制信号的幅度。

公开(公告)号：US20110268285A1

公开(公告)日：2011-11-03

申请号：US12674361

申请日：2007-08-20

申请人： Yoshiki Ohta ,  Kensaku Obata

发明人： Yoshiki Ohta ,  Kensaku Obata

IPC分类号： H04R29/00

CPC分类号： G01S3/802 ,  G01S3/808 ,  H04S7/301 ,  H04S2400/11 ,  H04S2420/07

摘要： Sound pressure acquisition element integrate by time and convert into logarithms a plurality of inputted sound signals to acquire each sound pressure corresponding to the plurality of sound signals. Normalizing element normalizes each sound pressure acquired by the sound pressure acquisition element. Linear sum calculating element calculates a linear sum of each sound pressure normalized by the normalizing element using a plurality of parameters which differ for each frequency range of the sound signals.

摘要翻译： 声压采集元件通过时间积分，并将多个输入的声音信号转换成对数，以获取与多个声音信号相对应的每个声压。 归一化元件使由声压获取元件获取的每个声压标准化。 线性和计算元件使用针对声音信号的每个频率范围不同的多个参数来计算由归一化元件归一化的每个声压的线性和。

公开(公告)号：US20110142244A1

公开(公告)日：2011-06-16

申请号：US13003669

申请日：2008-07-11

申请人： Kensaku Obata ,  Yoshiki Ohta

发明人： Kensaku Obata ,  Yoshiki Ohta

IPC分类号： H04R5/00

CPC分类号： H04S7/302 ,  H04S1/002 ,  H04S7/40 ,  H04S2400/11 ,  H04S2420/01 ,  H04S2420/07

摘要： A delay amount determination device, sound image localization device, delay amount determination method, and delay amount determination processing program capable of efficiently determining a parameter using fewer test sounds are provided. If the localization direction of the sound image when the test sound is outputted from left and right speakers is specified by the user through an input unit, an operation unit finds the localization angle corresponding to the localization direction. The operation unit, if finding localization angles with two different delay values, compares the difference of the two localization angles with a threshold value. The operation unit, if judging that the difference is larger than the threshold value, changes one of the delay values, finds the localization angle corresponding to the changed delay value, and further compares the difference of the two localization angles with the threshold value.

摘要翻译： 提供了能够使用更少的测试声音有效地确定参数的延迟量确定装置，声像定位装置，延迟量确定方法和延迟量确定处理程序。 如果用户通过输入单元指定了从左右扬声器输出测试声音时的声像的定位方向，则操作单元找到与定位方向对应的定位角。 操作单元如果找到具有两个不同延迟值的定位角，则将两个定位角的差与阈值进行比较。 操作单元如果判断出差大于阈值，则改变其中一个延迟值，找到与改变的延迟值对应的定位角度，并进一步将两个定位角度的差与阈值进行比较。

公开(公告)号：US20110033070A1

公开(公告)日：2011-02-10

申请号：US12446361

申请日：2006-10-25

申请人： Kensaku Obata ,  Yoshiki Ohta

发明人： Kensaku Obata ,  Yoshiki Ohta

IPC分类号： H04R5/02

CPC分类号： H04S1/007

摘要： A sound image localization processing apparatus is provided, in which a surround system is realized by a front speaker with a simple signal process, and the same side localization effect can be given to a plurality of listeners.A sound image localization processing apparatus 100 causes two speakers FR, FL disposed at the right and the left in front of a listener to output sound in accordance with a plurality of supplied sound signals, and gives a sound space with a sense of realism to the listeners.The apparatus 100 comprises: signal processing means 200 for controlling a phase of a right signal indicative of sound signal which should be heard from the right side, and a left signal indicative of sound signal which should be heard from the left side, relative to a listening position of one of the listeners, and localizing a sound image at a side of one of the listeners frequency-band division means 200 for dividing the processed sound signal by a predetermined frequency band, and signal correction means 200 for assigning each listener to the divided frequency band, controlling a phase of the right signal or the left signal which has been signal-processed for a listening position of the other listener, and localizing a sound image at a side of the other listener.

摘要翻译： 提供了一种声像定位处理装置，其中通过具有简单信号处理的前置扬声器实现环绕系统，并且可以向多个收听者提供相同的侧面定位效果。 声像定位处理装置100使两个扬声器FR，FL设置在收听者前面的左右，以根据多个提供的声音信号输出声音，并且向现有的声音空间赋予声音空间 听众。 装置100包括：信号处理装置200，用于控制指示从右侧听到的声音信号的右信号的相位，以及指示应该从左侧听到的声音信号的左信号相对于 收听听众之一的收听位置，并且在听众频率分割装置200之一的一侧定位声音图像，用于将经处理的声音信号除以预定频带，以及信号校正装置200，用于将每个听众分配给 控制对于另一收听者的收听位置进行了信号处理的右信号或左信号的相位，并且使另一收听者侧的声像定位。

公开(公告)号：US20090252339A1

公开(公告)日：2009-10-08

申请号：US12067254

申请日：2006-09-20

申请人： Kensaku Obata ,  Yoshiki Ohta

发明人： Kensaku Obata ,  Yoshiki Ohta

IPC分类号： H04R5/00

CPC分类号： H04S5/02

摘要： In this signal processing apparatus, a first-audio-parameter calculating unit calculates a first audio parameter based on two audio signals. A second-audio-parameter calculating unit calculates a second audio parameter based on the two audio signals. A surround-signal generating unit generates surround components to be respectively allocated to surround signals.

摘要翻译： 在该信号处理装置中，第一音频参数计算单元基于两个音频信号来计算第一音频参数。 第二音频参数计算单元基于两个音频信号来计算第二音频参数。 环绕信号生成单元生成分别分配给环绕信号的环绕声分量。

公开(公告)号：US08300835B2

公开(公告)日：2012-10-30

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： H01L29/00

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：US20090122994A1

公开(公告)日：2009-05-14

申请号：US12090600

申请日：2006-10-11

申请人： Yoshiki Ohta ,  Kensaku Obata

发明人： Yoshiki Ohta ,  Kensaku Obata

IPC分类号： H04R5/00

CPC分类号： H04S1/002

摘要： A localization control apparatus outputs an input audio signal to one channel among plural channels, and based on the input audio signal, outputs a control signal for controlling an audio signal for another channel among the plural channels. In the localization control apparatus, an attenuating unit attenuates the input audio signal. A delaying unit, according to band, separates and delays the audio signal attenuated by the attenuating unit. A generating unit generates the control signal by combining each component of the audio signal separated and delayed by the delaying unit.

摘要翻译： 定位控制装置将输入音频信号输出到多个通道中的一个通道，并且基于输入的音频信号，输出用于控制多个通道中的另一个通道的音频信号的控制信号。 在定位控制装置中，衰减单元衰减输入音频信号。 根据频带的延迟单元分离并延迟由衰减单元衰减的音频信号。 生成单元通过组合由延迟单元分离和延迟的音频信号的每个分量来产生控制信号。