公开(公告)号：US20090034753A1

公开(公告)日：2009-02-05

申请号：US12220738

申请日：2008-07-28

申请人： Katsuaki Yokomizo ,  Takuya Daishin ,  Yoshitaka Miyake

发明人： Katsuaki Yokomizo ,  Takuya Daishin ,  Yoshitaka Miyake

IPC分类号： H04R3/00

CPC分类号： G01S3/807 ,  G01S3/8055 ,  H04N5/2251 ,  H04N5/232

摘要： A direction detection apparatus is disclosed. The direction detection apparatus includes a distribution obtainment section, an emphasis section, and a direction selection section. The distribution obtainment section obtains a distribution of intensities of sounds in a predetermined directional range. The emphasis section emphasizes sounds in the distribution of the intensities of the sounds obtained by the distribution obtainment section, wherein the emphasis section emphasizes the sounds in a second directional range which is a narrower directional range than the predetermined directional range and a center of the second directional range corresponds to a direction represented by selection information. The direction selection section decides a direction to be selected next based on the distribution of the intensities of the sounds which are output from the emphasis section and outputs the direction decided to be selected next as the selection information.

摘要翻译： 公开了一种方向检测装置。 方向检测装置包括分配获取部分，强调部分和方向选择部分。 分配获得部分获得预定方向范围内的声音强度分布。 强调部分强调由分配获取部分获得的声音的强度分布中的声音，其中强调部分强调第二方向范围内的声音，该第二方向范围是比预定方向范围更窄的方向范围，并且第二方向的中心 方向范围对应于由选择信息表示的方向。 方向选择部基于从强调部输出的声音的强度的分布，决定接下来要选择的方向，并输出被判定为下一选择的方向作为选择信息。

公开(公告)号：US08064618B2

公开(公告)日：2011-11-22

申请号：US12220738

申请日：2008-07-28

申请人： Katsuaki Yokomizo ,  Takuya Daishin ,  Yoshitaka Miyake

发明人： Katsuaki Yokomizo ,  Takuya Daishin ,  Yoshitaka Miyake

IPC分类号： H04R3/00

CPC分类号： G01S3/807 ,  G01S3/8055 ,  H04N5/2251 ,  H04N5/232

摘要： A direction detection apparatus is disclosed. The direction detection apparatus includes a distribution obtainment section, an emphasis section, and a direction selection section. The distribution obtainment section obtains a distribution of intensities of sounds in a predetermined directional range. The emphasis section emphasizes sounds in the distribution of the intensities of the sounds obtained by the distribution obtainment section, wherein the emphasis section emphasizes the sounds in a second directional range which is a narrower directional range than the predetermined directional range and a center of the second directional range corresponds to a direction represented by selection information. The direction selection section decides a direction to be selected next based on the distribution of the intensities of the sounds which are output from the emphasis section and outputs the direction decided to be selected next as the selection information.

摘要翻译： 公开了一种方向检测装置。 方向检测装置包括分配获取部分，强调部分和方向选择部分。 分配获得部分获得预定方向范围内的声音强度分布。 强调部分强调由分配获得部分获得的声音的强度分布中的声音，其中，强调部分强调第二方向范围内的声音，该第二方向范围是比预定方向范围更窄的方向范围，并且第二方向的中心 方向范围对应于由选择信息表示的方向。 方向选择部基于从强调部输出的声音的强度的分布，决定接下来要选择的方向，并输出被判定为下一选择的方向作为选择信息。

公开(公告)号：US07315591B2

公开(公告)日：2008-01-01

申请号：US10766284

申请日：2004-01-28

申请人： Takuya Daishin ,  Yoshitaka Miyake ,  Hisao Osabe

发明人： Takuya Daishin ,  Yoshitaka Miyake ,  Hisao Osabe

IPC分类号： H04L27/06

CPC分类号： G11B20/10046 ,  G11B20/10009 ,  G11B20/10425

摘要： A reproduced signal waveform processing apparatus is provided. The apparatus includes an A/D converter for sampling a reproduced signal at a reproducing clock having a predetermined oscillation frequency; a first equalizer for equalizing a digital reproduced signal from the A/D converter; a second equalizer connected in series with the first equalizer for further equalizing the digital reproduced signal from the first equalizer; a phase frequency controller for detecting a phase frequency error between the digital reproduced signal from the first equalizer and the reproducing clock signal, and outputting a control signal on the basis of a result of the detection; and a variable frequency oscillator for varying the oscillation frequency in accordance with the control signal.

摘要翻译： 提供再生信号波形处理装置。 该装置包括：A / D转换器，用于在具有预定振荡频率的再现时钟采样再现信号; 用于均衡来自A / D转换器的数字再现信号的第一均衡器; 与第一均衡器串联连接的第二均衡器，用于进一步均衡来自第一均衡器的数字再现信号; 相位频率控制器，用于检测来自第一均衡器的数字再现信号与再现时钟信号之间的相位频率误差，并且基于检测结果输出控制信号; 以及用于根据控制信号改变振荡频率的可变频率振荡器。

公开(公告)号：US20080152154A1

公开(公告)日：2008-06-26

申请号：US12002882

申请日：2007-12-19

申请人： Takuya Daishin ,  Yoshitaka Miyake ,  Kaoru Gyotoku

发明人： Takuya Daishin ,  Yoshitaka Miyake ,  Kaoru Gyotoku

IPC分类号： H04R5/00

CPC分类号： H04S3/00 ,  H04R5/027

摘要： An audio signal processing apparatus includes first, second and third omni-directional microphones each of which receives sound and generates an omni-directional audio signal and which are spaced apart by a predetermined distance, a first adder section that adds audio signals generated by the first, second and third omni-directional microphones and generates an audio signal having an omni-directivity in the whole circumferential direction, a first subtractor section that subtracts audio signals generated by the first and third omni-directional microphones and generates an audio signal having a directivity in the right-left direction, a second adder section that adds audio signals generated by the first and third omni-directional microphones, a second subtractor section that subtracts an audio signal generated by the second omni-directional microphone from the audio signal added by the second adder section and generates an audio signal having a directivity in the front-back direction, and an output section that adds the audio signal resulting from the multiplication of the audio signal having a directivity in the whole circumferential direction by a predetermined coefficient, the audio signal resulting from the multiplication of the audio signal having a directivity in the right-left direction by a predetermined coefficient, and the audio signal resulting from the multiplication of the audio signal having a directivity in the front-back direction by a predetermined coefficient and generates a unidirectional audio signal.

摘要翻译： 音频信号处理装置包括第一，第二和第三全向麦克风，每个麦克风接收声音并产生全向音频信号，并且间隔开预定距离;第一加法器部分，其添加由第一 第二和第三全向麦克风，并且产生在整个圆周方向上具有全指向性的音频信号;第一减法器部分，其减去由第一和第三全向麦克风产生的音频信号，并产生具有方向性的音频信号 在左右方向上，添加由第一和第三全向麦克风产生的音频信号的第二加法器部分，第二减法器部分，从由第二全向麦克风添加的音频信号中减去由第二全向麦克风产生的音频信号 第二加法器部分，并且产生在前后方向上具有方向性的音频信号 以及输出部分，其将从整个圆周方向上具有方向性的音频信号相乘得到的音频信号相加预定系数，该音频信号是由左右方向上具有指向性的音频信号 以及由前后方向上具有方向性的音频信号乘以预定系数而产生的音频信号，并产生单向音频信号。

公开(公告)号：US08335321B2

公开(公告)日：2012-12-18

申请号：US13286551

申请日：2011-11-01

申请人： Takuya Daishin ,  Yoshitaka Miyake ,  Kaoru Gyotoku

发明人： Takuya Daishin ,  Yoshitaka Miyake ,  Kaoru Gyotoku

IPC分类号： H04R3/00

CPC分类号： H04S3/00 ,  H04R5/027

摘要： An audio signal processing apparatus generates an audio signal having an omni-directivity in the whole circumferential direction, generates an audio signal having a directivity in the right-left direction, generates an audio signal having a directivity in the front-back direction, adds the audio signal resulting from the multiplication of the audio signal having a directivity in the whole circumferential direction by a predetermined coefficient, the audio signal resulting from the multiplication of the audio signal having a directivity in the right-left direction by a predetermined coefficient, and the audio signal resulting from the multiplication of the audio signal having a directivity in the front-back direction by a predetermined coefficient, and generates a unidirectional audio signal.

摘要翻译： 音频信号处理装置产生在整个圆周方向上具有全向指向性的音频信号，产生在左右方向上具有指向性的音频信号，产生具有前后方向的方向性的音频信号， 由于在整个圆周方向上具有指向性的音频信号乘以预定系数而产生的音频信号，由具有在左右方向上的方向性的音频信号乘以预定系数而产生的音频信号，以及 音频信号由前后方向上具有方向性的音频信号乘以预定系数而产生，并产生单向音频信号。

公开(公告)号：US08081773B2

公开(公告)日：2011-12-20

申请号：US12002882

申请日：2007-12-19

申请人： Takuya Daishin ,  Yoshitaka Miyake ,  Kaoru Gyotoku

发明人： Takuya Daishin ,  Yoshitaka Miyake ,  Kaoru Gyotoku

IPC分类号： H04R3/00

CPC分类号： H04S3/00 ,  H04R5/027

摘要： An audio signal processing apparatus includes first, second and third omni-directional microphones each of which receives sound and generates an omni-directional audio signal and which are spaced apart by a predetermined distance, a first adder section that adds audio signals generated by the first, second and third omni-directional microphones and generates an audio signal having an omni-directivity in the whole circumferential direction, a first subtractor section that subtracts audio signals generated by the first and third omni-directional microphones and generates an audio signal having a directivity in the right-left direction, a second adder section that adds audio signals generated by the first and third omni-directional microphones, a second subtractor section that subtracts an audio signal generated by the second omni-directional microphone from the audio signal added by the second adder section and generates an audio signal having a directivity in the front-back direction, and an output section that adds the audio signal resulting from the multiplication of the audio signal having a directivity in the whole circumferential direction by a predetermined coefficient, the audio signal resulting from the multiplication of the audio signal having a directivity in the right-left direction by a predetermined coefficient, and the audio signal resulting from the multiplication of the audio signal having a directivity in the front-back direction by a predetermined coefficient and generates a unidirectional audio signal.

摘要翻译： 音频信号处理装置包括第一，第二和第三全向麦克风，每个麦克风接收声音并产生全向音频信号，并且间隔开预定距离;第一加法器部分，其添加由第一 第二和第三全向麦克风，并且产生在整个圆周方向上具有全指向性的音频信号;第一减法器部分，其减去由第一和第三全向麦克风产生的音频信号，并产生具有方向性的音频信号 在左右方向上，添加由第一和第三全向麦克风产生的音频信号的第二加法器部分，第二减法器部分，从由第二全向麦克风添加的音频信号中减去由第二全向麦克风产生的音频信号 第二加法器部分，并且产生在前后方向上具有方向性的音频信号 以及输出部分，其将从整个圆周方向上具有方向性的音频信号相乘得到的音频信号相加预定系数，该音频信号是由左右方向上具有指向性的音频信号 以及由前后方向上具有方向性的音频信号乘以预定系数而产生的音频信号，并产生单向音频信号。