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1. 发明授权

US08411165B2 Microphone apparatus, reproducing apparatus, and image taking apparatus 失效
标题翻译：麦克风装置，再现装置和摄像装置
公开(公告)号：US08411165B2
公开(公告)日：2013-04-02
申请号：US10968700
申请日：2004-10-19
申请人： Kazuhiko Ozawa
发明人： Kazuhiko Ozawa
IPC分类号： H04N5/76 , H04R3/00 , H03M7/00
CPC分类号： H04R3/005 , H04N5/23293 , H04R2201/403 , H04R2430/23
摘要： A microphone apparatus of the present invention is applied to a camera including a panel type view finder for displaying a picture taken by the camera, a touch panel for pointing a desired position of the picture displayed on the view finder, determining circuit for determining a direction of the real picture in accordance with the position pointed by the touch panel, a microphone device having a plurality of microphone units for collecting a sound that comes from the picture taken by the camera; and directivity generating circuit for generating a sound directivity signal with which the microphone device collects the sound coming from the direction determined by the determining circuit.
摘要翻译：本发明的麦克风装置应用于包括用于显示照相机拍摄的照片的面板型取景器的相机，用于指示在取景器上显示的图像的期望位置的触摸面板，用于确定方向的确定电路根据触摸面板指示的位置的实际图像，具有多个麦克风单元的麦克风装置，用于收集来自照相机拍摄的图像的声音; 以及指向性产生电路，用于产生声音指向性信号，麦克风装置利用该方向信号收集来自由确定电路确定的方向的声音。

2. 发明授权

US07436968B2 Adaptive noise reduction method and device 失效
标题翻译：自适应降噪方法及装置
公开(公告)号：US07436968B2
公开(公告)日：2008-10-14
申请号：US10523638
申请日：2003-08-01
申请人： Kazuhiko Ozawa
发明人： Kazuhiko Ozawa
IPC分类号： A61F11/06 , G10K11/16 , H03B29/00
CPC分类号： G11B20/10009 , H03H21/0012
摘要： An adaptive noise reduction method and apparatus capable of reducing efficiently variable period noise from a main input is provided. The pitch of a noise waveform to be reduced can be variable with a change in a period of motor noise occurring when the revolution period is changed by disc motor control of DVD-RAM, by revolution speed control of other motors, and revolution period change on starting a motor and the like. Therefore, the renewal of adaptive filter coefficient becomes almost unnecessary, thus allowing noise reduction to be performed without degrading a noise canceling effect.
摘要翻译：提供了一种能够有效地降低来自主输入的可变周期噪声的自适应噪声降低方法和装置。要减少的噪声波形的间距可以随着DVD-RAM的盘电机控制改变旋转周期，其他电机的转速控制和转数周期变化而发生的电动机噪声周期的变化而变化起动马达等。因此，自适应滤波器系数的更新变得几乎不必要，因此可以在不降低噪声消除效果的情况下执行降噪。

3. 发明申请

US20080044033A1 Sound pickup device and sound pickup method 审中-公开
标题翻译：拾音装置和拾音方式
公开(公告)号：US20080044033A1
公开(公告)日：2008-02-21
申请号：US11889359
申请日：2007-08-13
申请人： Kazuhiko Ozawa
发明人： Kazuhiko Ozawa
IPC分类号： H04R5/00
CPC分类号： H04R1/406 , H04R3/005 , H04R5/027 , H04R2201/403 , H04R2430/20
摘要： A sound-pickup device includes an input unit configured to input a plurality of sound signals, a sound-directivity-generation unit configured to generate a plurality of sound-directional signals in all circumferential directions from the sound signals, a scanning unit configured to scan and output the sound-directional signals in order of directivity directions, and a vector-synthesis unit configured to select at least one specified-direction signal transmitted from the scanning unit and synthesize a specified direction. At least one signal output from the vector-synthesis unit is processed to be a plurality of sound-output channels.
摘要翻译：一种声音拾取装置，包括被配置为输入多个声音信号的输入单元，配置成从声音信号在全周向产生多个声音信号的声音指向性单元，被配置为扫描的扫描单元并且按照指向性方向的顺序输出声音方向信号;以及矢量合成单元，被配置为选择从扫描单元发送的至少一个指定方向信号并且合成指定的方向。从矢量合成单元输出的至少一个信号被处理为多个声音输出声道。

4. 发明申请

US20070058822A1 Noise reducing apparatus, method and program and sound pickup apparatus for electronic equipment 审中-公开
标题翻译：用于电子设备的降噪装置，方法和程序以及拾音装置
公开(公告)号：US20070058822A1
公开(公告)日：2007-03-15
申请号：US11518895
申请日：2006-09-12
申请人： Kazuhiko Ozawa
发明人： Kazuhiko Ozawa
IPC分类号： H04B15/00
CPC分类号： G10L21/0208 , G10L19/008 , H04R2410/07 , H04S1/00 , H04S2420/07
摘要： A noise reducing apparatus is disclosed, which includes: input means for inputting multiple audio signals from multiple audio channels; multiple band extracting means for extracting a predetermined band from the multiple audio signals; calculating means for averaging signals from the multiple band extracting means; multiple first level detecting means for detecting the signal levels in a predetermined period of time of the signals from the multiple band extracting means; second level detecting means for detecting the signal level in a predetermined period of time of the signal from the calculating means; selecting means for selecting, for each of the predetermined period of times, the signal having the lowest level value of the level values detected by the multiple first level detecting means and the second level detecting means; band limiting means for limiting the band of the signal from the selecting means; and band synthesizing means for band-synthesizing the signal from the band limiting means and the signal in a band, which is not extracted by the multiple band extracting means, for each audio channel, wherein the output of the band synthesizing means is an audio channel output signal.
摘要翻译：公开了一种降噪装置，包括：输入装置，用于输入来自多个音频通道的多个音频信号; 多频带提取装置，用于从多个音频信号中提取预定频带; 用于平均来自所述多频带提取装置的信号的计算装置; 多个第一电平检测装置，用于检测来自多频带提取装置的信号的预定时间段中的信号电平; 第二电平检测装置，用于在来自计算装置的信号的预定时间段内检测信号电平; 选择装置，用于对于所述预定时间段中的每一个，选择具有由所述多个第一电平检测装置和所述第二电平检测装置检测的电平值的最低电平值的信号; 频带限制装置，用于限制来自选择装置的信号的频带; 以及频带合成装置，用于对来自频带限制装置的信号和对于每个音频信道不被多频带提取装置提取的频带中的信号进行频带合成，其中频带合成装置的输出是音频信道输出信号。

5. 发明授权

US07174023B2 Automatic wind noise reduction circuit and automatic wind noise reduction method 有权
标题翻译：自动风降噪电路和自动降噪方法
公开(公告)号：US07174023B2
公开(公告)日：2007-02-06
申请号：US10525112
申请日：2003-08-19
申请人： Kazuhiko Ozawa
发明人： Kazuhiko Ozawa
IPC分类号： H04B15/00
CPC分类号： H04R3/005 , H04R2410/07
摘要： An object is to provide an automatic wind noise reducing circuit and an automatic wind noise reducing method, which are capable of coping with a multichanneling trend of audio signals, and improving performance as well as the degree of freedom in system design. Arithmetic units (26, 27, 28) obtain added signals of audio signals of audio channels excluding respective selected audio channels, which are selected so as to be different from each other. Arithmetic units (29, 30, 31) subtract respective added signals of the arithmetic units (26, 27, 28) from corresponding audio signals of the selected audio channels. The subtraction signals from the arithmetic units (29, 30, 31) are subjected to a band limit control and limited to a frequency band of a wind noise signal by LPFs (21, 23, 25). After level-controlling of the subtraction signals from the arithmetic units (29, 30, 31) which are limited to the wind noise signal band by variable level amplifiers (32, 33, 34), the subtraction signals are subtracted from respective audio signals of corresponding audio channels.
摘要翻译：目的是提供一种自动降噪电路和自动降噪方法，能够应对音频信号的多信号化趋势，提高系统设计的性能和自由度。算术单元（26,27,28）获得除了相互选择的音频通道之外的音频信号的相加信号，这些音频信号被选择为彼此不同。算术单元（29,30,31）从所选择的音频信道的相应音频信号中减去运算单元（26,27,28）的各个相加信号。来自算术单元（29,30,31）的减法信号经受频带限制控制，并被LPF（21,23,25）限制在风噪声信号的频带上。在通过可变电平放大器（32,33,34）限制到风噪声信号频带的算术单元（29,30,31）的减法信号进行电平控制之后，从相应的音频信号中减去相减信号相应的音频通道。

6. 发明申请

US20060291816A1 Signal processing apparatus, signal processing method, program, and recording medium 有权
标题翻译：信号处理装置，信号处理方法，程序和记录介质
公开(公告)号：US20060291816A1
公开(公告)日：2006-12-28
申请号：US11474982
申请日：2006-06-27
申请人： Kazuhiko Ozawa
发明人： Kazuhiko Ozawa
IPC分类号： H04N7/00
CPC分类号： H04N5/772 , G06K9/00234 , H04N5/232 , H04N5/23219 , H04N5/775 , H04N5/781 , H04N5/85 , H04N9/8042
摘要： A signal processing apparatus processing a video signal and an audio signal in synchronization with the video signal includes generating means for generating information indicating a probability of a certain subject appearing in the image on the basis of the video signal that is input; determining means for determining whether the certain subject appears in the image on the basis of the information generated by the generating means; and directional characteristic varying means for, if the determining means determines that the certain subject appears in the image, varying a directional characteristic of the audio signal so as to increase the level of the audio signal collected from the direction of the subject and/or to decrease the levels of the audio signals collected from directions other than the direction of the subject.
摘要翻译：与视频信号同步地处理视频信号和音频信号的信号处理装置包括：生成装置，用于根据输入的视频信号产生指示出现在图像中的某个被摄体的概率的信息; 确定装置，用于基于由生成装置生成的信息来确定某个被摄体是否出现在图像中; 以及方向特征变化装置，用于如果所述确定装置确定所述特定对象出现在所述图像中，则改变所述音频信号的方向特性，以便增加从所述对象的方向收集的所述音频信号的电平和/或减少从除了被摄体的方向以外的方向收集的音频信号的电平。

7. 发明申请

US20060044419A1 Sound generating method, sound generating apparatus, sound reproducing method, and sound reproducing apparatus 有权
标题翻译：声音产生方法，声音产生装置，声音再现方法和声音再现装置
公开(公告)号：US20060044419A1
公开(公告)日：2006-03-02
申请号：US11209724
申请日：2005-08-24
申请人： Kazuhiko Ozawa
发明人： Kazuhiko Ozawa
IPC分类号： H04N5/76 , H04N5/225 , H04N9/04
CPC分类号： H04S7/30 , H04R3/005 , H04R2499/15
摘要： The present invention provides a sound generating method of generating sound signals related to a video signal, which comprises a step of generating independently each of the sound signals matched to a horizontal direction and a vertical direction of a video, and a step of allowing the horizontal and the vertical sound signals that have been generated to be reproduced independently with horizontal sound output means and vertical sound output means, respectively.
摘要翻译：本发明提供了一种产生与视频信号有关的声音信号的声音产生方法，其包括独立地产生与视频的水平方向和垂直方向匹配的每个声音信号的步骤，以及允许水平以及分别使用水平声音输出装置和垂直声音输出装置独立地再生的垂直声音信号。

8. 发明申请

US20050140810A1 Microphone apparatus, reproducing apparatus, and image taking apparatus 失效
标题翻译：麦克风装置，再现装置和摄像装置
公开(公告)号：US20050140810A1
公开(公告)日：2005-06-30
申请号：US10968700
申请日：2004-10-19
申请人： Kazuhiko Ozawa
发明人： Kazuhiko Ozawa
IPC分类号： H04N5/225 , H04N5/232 , H04N101/00 , H04R1/40 , H04R3/00 , H04R5/027 , H04N5/222
CPC分类号： H04R3/005 , H04N5/23293 , H04R2201/403 , H04R2430/23
摘要： A microphone apparatus of the present invention is applied to a camera including a panel type view finder for displaying a picture taken by the camera, a touch panel for pointing a desired position of the picture displayed on the view finder, determining circuit for determining a direction of the real picture in accordance with the position pointed by the touch panel, a microphone device having a plurality of microphone units for collecting a sound that comes from the picture taken by the camera; and directivity generating circuit for generating a sound directivity signal with which the microphone device collects the sound coming from the direction determined by the determining circuit.
摘要翻译：本发明的麦克风装置应用于包括用于显示照相机拍摄的照片的面板型取景器的相机，用于指示在取景器上显示的图像的期望位置的触摸面板，用于确定方向的确定电路根据触摸面板指示的位置的实际图像，具有多个麦克风单元的麦克风装置，用于收集来自照相机拍摄的图像的声音; 以及指向性产生电路，用于产生声音指向性信号，麦克风装置利用该方向信号收集来自由确定电路确定的方向的声音。

9. 发明授权

US08331583B2 Noise reducing apparatus and noise reducing method 失效
标题翻译：降噪装置和降噪方法
公开(公告)号：US08331583B2
公开(公告)日：2012-12-11
申请号：US12707906
申请日：2010-02-18
申请人： Kazuhiko Ozawa
发明人： Kazuhiko Ozawa
IPC分类号： H04B15/00 , G10L21/00
CPC分类号： G10L21/0208 , G10L21/0264 , G10L25/90 , G11B20/24
摘要： A noise reducing apparatus includes: a voice signal inputting unit inputting an input voice signal; a noise occurrence period detecting unit detecting a noise occurrence period; a noise removing unit removing a noise for the noise occurrence period; a generation source signal acquiring unit acquiring a generation source signal with a time duration corresponding to a time duration corresponding to the noise occurrence period; a pitch calculating unit calculating a pitch of an input voice signal interval; an interval signal setting unit setting interval signals divided in each unit period interval; an interpolation signal generating unit generating an interpolation signal with the time duration corresponding to the noise occurrence period and alternately arranging the interval signal in a forward time direction and the interval signal in a backward time direction; and a combining unit combining the interpolation signal and the input voice signal, from which the noise is removed.
摘要翻译：降噪装置包括：语音信号输入单元，输入输入的语音信号; 噪声发生周期检测单元，检测噪声发生周期; 噪声去除单元去除噪声发生周期的噪声; 生成源信号获取单元，获取具有对应于与噪声发生周期相对应的持续时间的持续时间的发生源信号; 音调计算单元，计算输入语音信号间隔的音高; 间隔信号设定单元，以每单位周期间隔分割设定间隔信号; 内插信号生成单元，生成具有与噪声发生期间对应的持续时间的内插信号，并且将时间间隔信号交替排列在前进时间方向上，并且间隔信号在后退时间方向上交替排列; 以及组合单元，组合插值信号和去除噪声的输入语音信号。

10. 发明授权

US08036398B2 Circuit and apparatus having a delay unit for reducing periodic noise 失效
标题翻译：具有用于减少周期性噪声的延迟单元的电路和装置
公开(公告)号：US08036398B2
公开(公告)日：2011-10-11
申请号：US11440261
申请日：2006-05-23
申请人： Kazuhiko Ozawa
发明人： Kazuhiko Ozawa
IPC分类号： H04B15/00
CPC分类号： H03H21/0023 , H03H17/0294
摘要： A signal processing circuit includes a delaying unit that is configured to carry out delay processing on the basis of periodicity information synchronized with the periodicity of a periodic noise included in an input signal and a filter unit that is configured to receive the input signal and has a notch characteristic at a frequency f. The frequency f satisfies f=N/T, where N represents an integer equal to or greater than one and T represents a delaying time applied by the delaying unit.
摘要翻译：信号处理电路包括：延迟单元，被配置为基于与包括在输入信号中的周期性噪声的周期性同步的周期性信息和被配置为接收输入信号的滤波器单元执行延迟处理，并且具有频率f处的陷波特性。频率f满足f = N / T，其中N表示等于或大于1的整数，T表示延迟单元施加的延迟时间。

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