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1. 发明授权

US06650756B1 Method and apparatus for characterizing audio transmitting system, and method and apparatus for setting characteristics of audio filter 失效
标题翻译：用于表征音频传输系统的方法和装置，以及用于设置音频滤波器特性的方法和装置
公开(公告)号：US06650756B1
公开(公告)日：2003-11-18
申请号：US09082566
申请日：1998-05-21
申请人： Nozomu Saito , Tomohiko Ise
发明人： Nozomu Saito , Tomohiko Ise
IPC分类号： A61F1106
CPC分类号： H03H21/0012 , H04R3/002
摘要： A designing system for adaptively characterizing an audio transmitting system has a white noise generating unit for generating a white noise signal. A speaker radiates the white noise generated by the white noise generating unit into an acoustic space. A microphone is placed at a predetermined position in the acoustic space and collects sound radiated from the speaker. A FIR adaptive filter receives the above white noise signal. An LMS algorithm processing unit updates each tap coefficient of the adaptive filter by using the LMS algorithm. A computation unit calculates the difference between a detection signal output from the microphone and an output of the adaptive filter and outputs the difference as an error signal &egr;. By using a white noise signal having an average power of one, the range of the step size parameter of the LMS algorithm required for stably operating the adaptive filter is fixed. According to the method for characterizing the audio transmitting system and the method for setting an audio filter, the stable operation of the adaptive filters is ensured without increasing the complexity of the overall system.
摘要翻译：用于自适应地表征音频传输系统的设计系统具有产生白噪声信号的白噪声产生单元。扬声器将由白噪声产生单元产生的白噪声辐射到声学空间中。麦克风被放置在声学空间中的预定位置并且收集从扬声器辐射的声音。 FIR自适应滤波器接收上述白噪声信号。 LMS算法处理单元通过使用LMS算法来更新自适应滤波器的每个抽头系数。计算单元计算从麦克风输出的检测信号和自适应滤波器的输出之间的差，并将差作为误差信号ε输出。通过使用平均功率为1的白噪声信号，稳定地操作自适应滤波器所需的LMS算法的步长参数的范围是固定的。根据用于表征音频发送系统的方法和用于设置音频滤波器的方法，确保自适应滤波器的稳定操作，而不增加整个系统的复杂性。

2. 发明授权

US07254242B2 Acoustic signal processing apparatus and method, and audio device 失效
标题翻译：声信号处理装置及方法及音响装置
公开(公告)号：US07254242B2
公开(公告)日：2007-08-07
申请号：US10453918
申请日：2003-06-03
申请人： Tomohiko Ise , Nozomu Saito
发明人： Tomohiko Ise , Nozomu Saito
IPC分类号： H04B15/00
CPC分类号： G10L21/02 , G10L2021/02082
摘要： A first band analyzer divides an acoustic signal received from a sound playback system through an input unit into frequency bands, and generates a first band level. An acoustic signal estimator estimates the band level of the original acoustic signal at the input unit, and generates a second band level for each band. A processor extracts an external noise component which is contained in the acoustic signal using the first band level and the second band level. The external noise can be accurately estimated with less computation than in the related art.
摘要翻译：第一频带分析仪将通过输入单元从声音播放系统接收的声学信号划分成频带，并产生第一频带电平。声信号估计器估计输入单元处的原始声信号的频带电平，并为每个频带产生第二频带电平。处理器使用第一频带电平和第二频带电平提取包含在声学信号中的外部噪声分量。可以比现有技术更少的计算来精确地估计外部噪声。

3. 发明授权

US06778601B2 Adaptive audio equalizer apparatus and method of determining filter coefficient 失效
标题翻译：自适应音频均衡器装置及其滤波器系数的确定方法
公开(公告)号：US06778601B2
公开(公告)日：2004-08-17
申请号：US09777370
申请日：2001-02-05
申请人： Tomohiko Ise , Nozomu Saito
发明人： Tomohiko Ise , Nozomu Saito
IPC分类号： H04B110
CPC分类号： H03H21/0012
摘要： In an adaptive audio equalizer apparatus, a signal that is output from an adaptive filter 13 is fed to a speaker and to a delaying unit. The signal fed to the delaying unit is delayed for a predetermined time, and is multiplied by a scaling factor in a multiplying unit. A first calculation unit calculates a difference between an output of a microphone and a target response signal, and outputs the result as an error signal. A second calculation unit adds the output of the multiplying unit to the error signal, and outputs the result to a filter coefficient setting unit of the adaptive filter.
摘要翻译：在自适应音频均衡器装置中，从自适应滤波器13输出的信号被馈送到扬声器和延迟单元。馈送到延迟单元的信号延迟预定时间，并且乘以乘法单元中的缩放因子。第一计算单元计算麦克风的输出与目标响应信号之间的差，并输出该结果作为误差信号。第二计算单元将乘法单元的输出与误差信号相加，并将结果输出到自适应滤波器的滤波器系数设置单元。

4. 发明申请

US20060147055A1 In-vehicle audio apparatus 有权
标题翻译：车载音响设备
公开(公告)号：US20060147055A1
公开(公告)日：2006-07-06
申请号：US11296856
申请日：2005-12-07
申请人： Tomohiko Ise
发明人： Tomohiko Ise
IPC分类号： H04R3/00 , H04B15/00
CPC分类号： H04R3/02 , H04R3/04 , H04R2499/13
摘要： An audio apparatus has a function of correcting an audio signal in response to a noise level. The audio apparatus includes a correction unit that corrects an input audio signal on the basis of a weighting factor, an output unit that produces a played-back audio sound on the basis of the corrected audio signal, a microphone for receiving an external sound that includes the played-back audio sound and noise, a noise-extracting unit that extracts a noise signal from an external sound signal, the noise-extracting unit including a speech-removing unit that removes a speech signal from the noise signal on the basis of noise spectrum data, and a weighting factor calculation unit that calculates the weighting factor on the basis of the extracted noise signal and supplies the calculated weighting factor to the correction unit.
摘要翻译：音频装置具有响应于噪声电平来校正音频信号的功能。音频装置包括：校正单元，其基于加权因子校正输入音频信号;基于校正的音频信号产生回放音频声音的输出单元;接收外部声音的麦克风，其包括：回放音频声音和噪声，噪声提取单元，其从外部声音信号中提取噪声信号，所述噪声提取单元包括语音消除单元，其基于噪声从所述噪声信号中去除语音信号频谱数据和加权因子计算单元，其基于所提取的噪声信号计算加权因子，并将计算的加权因子提供给校正单元。

5. 发明申请

US20090169028A1 Sound Field Control Apparatus And Sound Field Control Method 有权
标题翻译：声场控制装置及声场控制方法
公开(公告)号：US20090169028A1
公开(公告)日：2009-07-02
申请号：US12186295
申请日：2008-08-05
申请人： Tomohiko Ise
发明人： Tomohiko Ise
IPC分类号： G10K11/16
CPC分类号： H04S7/301 , H04R2499/13
摘要： In a sound field control apparatus including multiple speakers, multiple microphones gathering sound radiated from the multiple speakers, a mode decomposition filter that performs mode decomposition on a sound pressure distribution, and a control filter that controls the input signals to be input to the multiple speakers such that the mode amplitudes of the modes decomposed by the mode decomposition filter can have a predetermined value, a sound pressure distribution in the acoustic space is measured, and the sound pressure distribution in the acoustic space is expressed by using a sinusoidal function and cosine function of a space frequency of the mode to be controlled in amplitude. The mode space frequency is corrected such that the expressed sound pressure distribution can be equal to the measured sound pressure distribution, and the filter coefficient for the mode decomposition filter is determined based on the mode space frequency obtained by the correction (corrected mode space frequency).
摘要翻译：在包括多个扬声器的声场控制装置中，多个麦克风收集从多个扬声器辐射的声音，对声压分布进行模式分解的模式分解滤波器，以及控制输入信号输入到多个扬声器的控制滤波器使得由模式分解滤波器分解的模式的模式幅度可以具有预定值，测量声学空间中的声压分布，并且通过使用正弦函数和余弦函数来表示声学空间中的声压分布的幅度被控制的模式的空间频率。校正模式空间频率，使得表达的声压分布可以等于测量的声压分布，并且基于通过校正获得的模式空间频率（校正模式空间频率）来确定模式分解滤波器的滤波器系数，。

6. 发明授权

US09002019B2 Sound field control apparatus and method for controlling sound field 有权
标题翻译：用于控制声场的声场控制装置和方法
公开(公告)号：US09002019B2
公开(公告)日：2015-04-07
申请号：US13080310
申请日：2011-04-05
申请人： Tomohiko Ise
发明人： Tomohiko Ise
IPC分类号： H04R29/00 , H04R3/00 , H04S7/00
CPC分类号： H04R3/005 , H04S7/30
摘要： A sound field control apparatus includes at least two main microphones; for each main microphone, a set of at least two sub microphones arranged such that the at least two sub microphones are placed in different axis directions about each of the main microphones; a filtering unit; and a filter coefficient calculating unit configured to calculate a filter coefficient for the filtering unit. A filter coefficient used to control sound pressure levels and air particle velocities of an output audio signal is calculated on the basis of a sound pressure level detected by each main microphone and the difference between the sound pressure level detected by the main microphone and that detected by each of the corresponding sub microphones.
摘要翻译：声场控制装置包括至少两个主麦克风; 对于每个主麦克风，一组至少两个子麦克风被布置成使得所述至少两个子麦克风围绕每个主麦克风被放置在不同的轴方向上; 过滤单元; 以及滤波器系数计算单元，被配置为计算滤波单元的滤波器系数。用于控制输出音频信号的声压级和空气粒子速度的滤波器系数基于由每个主麦克风检测到的声压级和由主麦克风检测到的声压级与由主麦克风检测到的声压级之间的差值每个相应的子麦克风。

7. 发明授权

US07995774B2 Sound field control apparatus and sound field control method 有权
标题翻译：声场控制装置和声场控制方法
公开(公告)号：US07995774B2
公开(公告)日：2011-08-09
申请号：US12186295
申请日：2008-08-05
申请人： Tomohiko Ise
发明人： Tomohiko Ise
IPC分类号： H04R3/04
CPC分类号： H04S7/301 , H04R2499/13
摘要： In a sound field control apparatus including multiple speakers, multiple microphones gathering sound radiated from the multiple speakers, a mode decomposition filter that performs mode decomposition on a sound pressure distribution, and a control filter that controls the input signals to be input to the multiple speakers such that the mode amplitudes of the modes decomposed by the mode decomposition filter can have a predetermined value, a sound pressure distribution in the acoustic space is measured, and the sound pressure distribution in the acoustic space is expressed by using a sinusoidal function and cosine function of a space frequency of the mode to be controlled in amplitude. The mode space frequency is corrected such that the expressed sound pressure distribution can be equal to the measured sound pressure distribution, and the filter coefficient for the mode decomposition filter is determined based on the mode space frequency obtained by the correction (corrected mode space frequency).
摘要翻译：在包括多个扬声器的声场控制装置中，多个麦克风收集从多个扬声器辐射的声音，对声压分布进行模式分解的模式分解滤波器，以及控制输入信号输入到多个扬声器的控制滤波器使得由模式分解滤波器分解的模式的模式幅度可以具有预定值，测量声学空间中的声压分布，并且通过使用正弦函数和余弦函数来表示声学空间中的声压分布的幅度被控制的模式的空间频率。校正模式空间频率，使得表达的声压分布可以等于测量的声压分布，并且基于通过校正获得的模式空间频率（校正模式空间频率）来确定模式分解滤波器的滤波器系数，。

8. 发明申请

US20070009109A1 Apparatus for estimating an amount of noise 审中-公开
标题翻译：用于估计噪声量的装置
公开(公告)号：US20070009109A1
公开(公告)日：2007-01-11
申请号：US11418480
申请日：2006-05-04
申请人： Tomohiko Ise , Shinichi Katsumata
发明人： Tomohiko Ise , Shinichi Katsumata
IPC分类号： H04B15/00
CPC分类号： H03G3/32 , H04B17/345
摘要： An apparatus for estimating an amount of noise is disclosed. The apparatus includes a FET processor that analyzes frequency components of an audio signal input to a speaker in a vehicle, a FET processor that analyzes frequency components of a signal output from a microphone in the vehicle, a coherence function calculator which detects a ratio of the audio signal included in the signal output from the microphone by calculating a magnitude squared coherence function based on the frequency components of the two signals analyzed by the first and second frequency analyzers, and a multiplier and adder which calculates an amount of external noise reaching the microphone separately from an audio sound corresponding to the audio signal on the basis of the signal output from the microphone and the ratio of the audio signal detected by the coherence function calculator.
摘要翻译：公开了一种用于估计噪声量的装置。该装置包括：FET处理器，其分析输入到车辆中的扬声器的音频信号的频率分量;分析从车辆中的麦克风输出的信号的频率分量的FET处理器;相干函数计算器，通过基于由第一和第二频率分析仪分析的两个信号的频率分量计算幅度平方相干函数而包括在麦克风输出的信号中的音频信号，以及计算到达麦克风的外部噪声量的乘法器和加法器基于从麦克风输出的信号和由相干函数计算器检测的音频信号的比率，与音频信号相对应的音频声音分开。

9. 发明授权

US08112283B2 In-vehicle audio apparatus 有权
标题翻译：车载音响设备
公开(公告)号：US08112283B2
公开(公告)日：2012-02-07
申请号：US11296856
申请日：2005-12-07
申请人： Tomohiko Ise
发明人： Tomohiko Ise
IPC分类号： G10L21/00
CPC分类号： H04R3/02 , H04R3/04 , H04R2499/13
摘要： An audio apparatus has a function of correcting an audio signal in response to a noise level. The audio apparatus includes a correction unit that corrects an input audio signal on the basis of a weighting factor, an output unit that produces a played-back audio sound on the basis of the corrected audio signal, a microphone for receiving an external sound that includes the played-back audio sound and noise, a noise-extracting unit that extracts a noise signal from an external sound signal, the noise-extracting unit including a speech-removing unit that removes a speech signal from the noise signal on the basis of noise spectrum data, and a weighting factor calculation unit that calculates the weighting factor on the basis of the extracted noise signal and supplies the calculated weighting factor to the correction unit.
摘要翻译：音频装置具有响应于噪声电平来校正音频信号的功能。音频装置包括：校正单元，其基于加权因子校正输入音频信号;基于校正的音频信号产生回放音频声音的输出单元;接收外部声音的麦克风，其包括：回放音频声音和噪声，噪声提取单元，其从外部声音信号中提取噪声信号，所述噪声提取单元包括语音消除单元，其基于噪声从所述噪声信号中去除语音信号频谱数据和加权因子计算单元，其基于所提取的噪声信号计算加权因子，并将计算的加权因子提供给校正单元。

10. 发明申请

US20110249825A1 Sound Field Control Apparatus and Method for Controlling Sound Field 有权
标题翻译：声场控制装置及声场控制方法
公开(公告)号：US20110249825A1
公开(公告)日：2011-10-13
申请号：US13080310
申请日：2011-04-05
申请人： Tomohiko Ise
发明人： Tomohiko Ise
IPC分类号： H04R29/00
CPC分类号： H04R3/005 , H04S7/30
摘要： A sound field control apparatus includes at least two main microphones; for each main microphone, a set of at least two sub microphones arranged such that the at least two sub microphones are placed in different axis directions about each of the main microphones; a filtering unit; and a filter coefficient calculating unit configured to calculate a filter coefficient for the filtering unit. A filter coefficient used to control sound pressure levels and air particle velocities of an output audio signal is calculated on the basis of a sound pressure level detected by each main microphone and the difference between the sound pressure level detected by the main microphone and that detected by each of the corresponding sub microphones.
摘要翻译：声场控制装置包括至少两个主麦克风; 对于每个主麦克风，一组至少两个子麦克风被布置成使得所述至少两个子麦克风围绕每个主麦克风被放置在不同的轴方向上; 过滤单元; 以及滤波器系数计算单元，被配置为计算滤波单元的滤波器系数。用于控制输出音频信号的声压级和空气粒子速度的滤波器系数基于由每个主麦克风检测到的声压级和由主麦克风检测到的声压级与由主麦克风检测到的声压级之间的差值每个相应的子麦克风。

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