公开(公告)号：US06835885B1

公开(公告)日：2004-12-28

申请号：US09634215

申请日：2000-08-09

申请人： Kazunobu Kondo ,  Koji Niimi

发明人： Kazunobu Kondo ,  Koji Niimi

IPC分类号： G10H700

CPC分类号： G10H1/40 ,  G10H7/008 ,  G10H2240/325 ,  G10H2250/035

摘要： A time-axis compression/expansion method and apparatus for multitrack signals is provided, which is capable of performing time-axis compression/expansion on a multitrack signal in such an appropriate manner as to prevent a degradation in the sound quality of a sound generated through a multichannel reproduction or a sound generated through reproduction of a musical tone signal obtained by mix-down. Positions of attacks of the rhythm track sound source signal of a plurality of track sound source signals are detected. Portions of the rhythm track sound source signal between the detected positions of attacks are subjected to a first time-axis compression/expansion process, and the other track sound source signals are subjected to a second time-axis compression/expansion process, based on the detected positions of attacks.

摘要翻译： 提供了一种用于多轨信号的时间轴压缩/扩展方法和装置，其能够以适当的方式对多轨信号执行时间轴压缩/扩展，以防止通过以下方式产生的声音的声音质量下降 通过再现通过混合获得的乐音信号产生的多声道再现或声音。 检测多个轨道声源信号的节奏轨道声源信号的攻击位置。 在检测到的攻击位置之间的节奏轨道声源信号的部分经受第一时间轴压缩/扩展处理，并且其他轨道声源信号经受第二时间轴压缩/扩展处理，基于 检测到的攻击位置。

公开(公告)号：US09002035B2

公开(公告)日：2015-04-07

申请号：US13367696

申请日：2012-02-07

申请人： Yasuyuki Umeyama ,  Kazunobu Kondo ,  Yu Takahashi ,  Jordi Bonada ,  Jordi Janer ,  Ricard Marxer

发明人： Yasuyuki Umeyama ,  Kazunobu Kondo ,  Yu Takahashi ,  Jordi Bonada ,  Jordi Janer ,  Ricard Marxer

IPC分类号： H04B1/00 ,  G11B20/10 ,  H03G5/00 ,  H03G5/16 ,  H03G5/18 ,  H04S7/00

CPC分类号： G11B20/10527 ,  G10H2210/305 ,  G10H2220/116 ,  G10H2250/235 ,  G11B2020/10564 ,  G11B2020/10574 ,  H03G5/005 ,  H03G5/165 ,  H03G5/18 ,  H04R2430/01 ,  H04S7/305 ,  H04S7/307 ,  H04S7/40 ,  H04S2400/13 ,  H04S2420/07

摘要： Signal processing section of a terminal converts acquired audio signals of a plurality of channels into frequency spectra set, calculates sound image positions corresponding to individual frequency components, and displays, on a display screen, the calculated sound image positions results by use of a coordinate system having coordinate axes of the frequency components and sound image positions. User-designated partial region of the coordinate system is set as a designated region and an amplitude-level adjusting amount is set for the designated region, so that the signal processing section adjusts amplitude levels of frequency components included in the frequency spectra and in the designated region, converts the adjusted frequency components into audio signals and outputs the converted audio signals.

摘要翻译： 终端的信号处理部将所获取的多个频道的音频信号变换为频谱集，计算与各个频率成分对应的声像位置，并在显示画面上使用坐标系显示计算出的声像位置的结果 具有频率分量和声像位置的坐标轴。 坐标系的用户指定的部分区域被设置为指定区域，并且为指定区域设置幅度电平调整量，使得信号处理部分调整频谱中包括的频率分量的振幅水平，并且在指定的 将经调整的频率分量转换成音频信号并输出​​转换的音频信号。

公开(公告)号：US20120201385A1

公开(公告)日：2012-08-09

申请号：US13367696

申请日：2012-02-07

申请人： Yasuyuki UMEYAMA ,  Kazunobu Kondo ,  Yu Takahashi ,  Jordi Bonada ,  Jordi Janer ,  Ricard Marxer

发明人： Yasuyuki UMEYAMA ,  Kazunobu Kondo ,  Yu Takahashi ,  Jordi Bonada ,  Jordi Janer ,  Ricard Marxer

IPC分类号： H04R5/00

CPC分类号： G11B20/10527 ,  G10H2210/305 ,  G10H2220/116 ,  G10H2250/235 ,  G11B2020/10564 ,  G11B2020/10574 ,  H03G5/005 ,  H03G5/165 ,  H03G5/18 ,  H04R2430/01 ,  H04S7/305 ,  H04S7/307 ,  H04S7/40 ,  H04S2400/13 ,  H04S2420/07

摘要： Signal processing section of a terminal converts acquired audio signals of a plurality of channels into frequency spectra set, calculates sound image positions corresponding to individual frequency components, and displays, on a display screen, the calculated sound image positions results by use of a coordinate system having coordinate axes of the frequency components and sound image positions. User-designated partial region of the coordinate system is set as a designated region and an amplitude-level adjusting amount is set for the designated region, so that the signal processing section adjusts amplitude levels of frequency components included in the frequency spectra and in the designated region, converts the adjusted frequency components into audio signals and outputs the converted audio signals.

摘要翻译： 终端的信号处理部将所获取的多个频道的音频信号变换为频谱集，计算与各个频率成分对应的声像位置，并在显示画面上使用坐标系显示计算出的声像位置的结果 具有频率分量和声像位置的坐标轴。 坐标系的用户指定的部分区域被设置为指定区域，并且为指定区域设置幅度电平调整量，使得信号处理部分调整频谱中包括的频率分量的振幅水平，并且在指定的 将经调整的频率分量转换成音频信号并输出​​转换的音频信号。

公开(公告)号：US20110211711A1

公开(公告)日：2011-09-01

申请号：US12932473

申请日：2011-02-25

申请人： Takayuki Inoue ,  Yu Takahashi ,  Hiroshi Saruwatari ,  Kazunobu Kondo

发明人： Takayuki Inoue ,  Yu Takahashi ,  Hiroshi Saruwatari ,  Kazunobu Kondo

IPC分类号： H04B15/00

CPC分类号： G10L21/02 ,  H04R2227/001

摘要： In a noise suppression apparatus, an index setter sets an exponent K that is a positive value. A factor setter variably sets a suppression factor according to the exponent K. A noise suppressor generates an audio signal from which a noise component is suppressed through noise suppression process of suppressing a Kth power of an amplitude of the noise component at each frequency thereof in a Kth power of an amplitude of the audio signal at each frequency thereof to a degree determined according to the suppression factor set by the factor setting part. Preferably, the index setter sets the exponent K to a value less than 0.1.

摘要翻译： 在噪声抑制装置中，索引设定器设定作为正值的指数K。 因子设定器根据指数K可变地设定抑制因子。噪声抑制器通过噪声抑制处理生成音频信号，通过噪声抑制处理抑制噪声分量在其频率中的噪声分量的振幅的第K次方 音频信号在其每个频率处的幅度的Kth功率达到由因子设置部分设置的抑制因子确定的程度。 优选地，索引设置器将指数K设置为小于0.1的值。

公开(公告)号：US20110170707A1

公开(公告)日：2011-07-14

申请号：US13005138

申请日：2011-01-12

申请人： Makoto YAMADA ,  Kazunobu Kondo

发明人： Makoto YAMADA ,  Kazunobu Kondo

IPC分类号： H04B15/00

CPC分类号： H04B15/00 ,  G10L21/0216

摘要： A noise suppressing device is provided for suppressing noise of a first audio signal to generate a second audio signal. In the noise suppressing device, a noise acquisition unit acquires a plurality of noise components which are different from each other. A noise suppression unit generates each suppression component by suppressing each noise component from the first audio signal, thereby providing a plurality of suppression components different from each other in correspondence to the plurality of the noise components. A signal generation unit generates the second audio signal by summing the plurality of the suppression components that are provided from the noise suppression unit.

摘要翻译： 提供噪声抑制装置，用于抑制第一音频信号的噪声以产生第二音频信号。 在噪声抑制装置中，噪声获取单元获取彼此不同的多个噪声分量。 噪声抑制单元通过从第一音频信号中抑制每个噪声分量来产生每个抑制分量，由此提供与多个噪声分量相对应的彼此不同的多个抑制分量。 信号生成单元通过对从噪声抑制单元提供的多个抑制分量进行求和来生成第二音频信号。

公开(公告)号：US20100125352A1

公开(公告)日：2010-05-20

申请号：US12617605

申请日：2009-11-12

申请人： Makoto YAMADA ,  Kazunobu Kondo

发明人： Makoto YAMADA ,  Kazunobu Kondo

IPC分类号： G06F17/00 ,  G06F15/18

CPC分类号： G10L21/0272 ,  G10L2021/02165 ,  H04R3/005

摘要： A signal processing device processes a plurality of observed signals at a plurality of frequencies. The plurality of the observed signals are produced by a plurality of sound receiving devices which receive a mixture of a plurality of sounds. In the signal processing device, a storage stores observed data of the plurality of the observed signals. The observed data represents a time series of magnitude of each frequency in each of the plurality of the observed signals. An index calculator calculates an index value from the observed data for each of the plurality of the frequencies. The index value indicates significance of learning of a separation matrix using the observed data of each frequency. The separation matrix is used for separation of the plurality of the sounds from each other at each frequency. A frequency selector selects one or more frequency according to the index value of each frequency. A learning processor determines the separation matrix by learning with a given initial separation matrix using the observed data of the selected frequency.

摘要翻译： 信号处理装置以多个频率处理多个观测信号。 多个观察信号由接收多个声音的混合的多个声音接收装置产生。 在信号处理装置中，存储存储多个观测信号的观测数据。 所观察的数据表示多个观测信号中的每一个中的每个频率的时间序列的大小。 索引计算器从针对多个频率中的每一个的观察数据计算索引值。 索引值表示使用每个频率的观察数据学习分离矩阵的重要性。 分离矩阵用于在每个频率处分离多个声音。 频率选择器根据每个频率的索引值选择一个或多个频率。 学习处理器通过使用所选频率的观察数据通过使用给定的初始分离矩阵学习来确定分离矩阵。

公开(公告)号：US20100008520A1

公开(公告)日：2010-01-14

申请号：US12499734

申请日：2009-07-08

申请人： Hiroshi SARUWATARI ,  Yoshihisa Uemura ,  Kazunobu Kondo

发明人： Hiroshi SARUWATARI ,  Yoshihisa Uemura ,  Kazunobu Kondo

IPC分类号： H04B15/00

CPC分类号： G10L21/0208 ,  G10L21/0232

摘要： A noise suppression estimation device calculates a noise index value which varies according to kurtosis of a frequence distribution of magnitude of a sound signal before or after suppression of the noise component, the noise index value indicating a degree of occurrence of musical noise after suppression of the noise component in a frequency domain. For example, the noise suppression estimation device calculates first kurtosis of a frequence distribution of magnitude of the sound signal before suppression of the noise component, calculates second kurtosis of a frequence distribution of magnitude of the sound signal after suppression of the noise component, and calculates the noise index value from the first kurtosis and the second kurtosis.

摘要翻译： 噪声抑制估计装置计算噪声指数值，该噪声指数值根据抑制噪声分量之前或之后的声音信号的频度分布的峰度而变化，噪声指数值表示抑制噪声分量后的音乐噪声的发生程度 频域中的噪声分量。 例如，噪声抑制估计装置计算抑制噪声分量之前的声音信号的频度分布的首次峰度，计算抑制噪声成分后的声音信号的频度分布的次高峰，并计算 第一次峰度的噪声指数值和第二次峰度的峰值。

公开(公告)号：US09224406B2

公开(公告)日：2015-12-29

申请号：US13284170

申请日：2011-10-28

申请人： Jordi Bonada ,  Jordi Janer ,  Ricard Marxer ,  Yasuyuki Umeyama ,  Kazunobu Kondo ,  Francisco Garcia

发明人： Jordi Bonada ,  Jordi Janer ,  Ricard Marxer ,  Yasuyuki Umeyama ,  Kazunobu Kondo ,  Francisco Garcia

IPC分类号： H04R29/00 ,  G10L25/90

CPC分类号： G10L25/90 ,  G10H2210/066 ,  G10H2210/091

摘要： Candidate frequencies per unit segment of an audio signal are identified. First processing section identifies an estimated train that is a time series of candidate frequencies, each selected for a different one of the segments, arranged over a plurality of the unit segments and that has a high likelihood of corresponding to a time series of fundamental frequencies of a target component. Second processing section identifies a state train of states, each indicative of one of sound-generating and non-sound-generating states of the target component in a different one of the segments, arranged over the unit segments. Frequency information which designates, as a fundamental frequency of the target component, a candidate frequency corresponding to the unit segment in the estimated train is generated for each unit segment corresponding to the sound-generating state. Frequency information indicative of no sound generation is generated for each unit segment corresponding to the non-sound-generating state.

摘要翻译： 识别音频信号的每单位片段的候选频率。 第一处理部分识别作为候选频率的时间序列的估计列车，每个候选频率被选择用于不同的一个段，排列在多个单位段上，并且具有对应于基本频率的时间序列的高可能性 目标组件。 第二处理部分识别状态列，每个状态列表指示布置在单位段上的不同的段中的目标分量的声音产生和非声音生成状态之一。 针对对应于发声状态的每个单位片段生成作为目标分量的基本频率指定与估计列车中的单位片段对应的候选频率的频率信息。 针对对应于非声音产生状态的每个单位片段产生指示没有声音产生的频率信息。

公开(公告)号：US09123348B2

公开(公告)日：2015-09-01

申请号：US12617605

申请日：2009-11-12

申请人： Makoto Yamada ,  Kazunobu Kondo

发明人： Makoto Yamada ,  Kazunobu Kondo

IPC分类号： G06F17/00 ,  G10L21/0272 ,  H04R3/00 ,  G10L21/0216

CPC分类号： G10L21/0272 ,  G10L2021/02165 ,  H04R3/005

摘要： A signal processing device processes a plurality of observed signals at a plurality of frequencies. The plurality of the observed signals are produced by a plurality of sound receiving devices which receive a mixture of a plurality of sounds. In the signal processing device, a storage stores observed data of the plurality of the observed signals. The observed data represents a time series of magnitude of each frequency in each of the plurality of the observed signals. An index calculator calculates an index value from the observed data for each of the plurality of the frequencies. The index value indicates significance of learning of a separation matrix using the observed data of each frequency. The separation matrix is used for separation of the plurality of the sounds from each other at each frequency. A frequency selector selects one or more frequency according to the index value of each frequency. A learning processor determines the separation matrix by learning with a given initial separation matrix using the observed data of the selected frequency.

摘要翻译： 信号处理装置以多个频率处理多个观测信号。 多个观察信号由接收多个声音的混合的多个声音接收装置产生。 在信号处理装置中，存储存储多个观测信号的观测数据。 所观察的数据表示多个观测信号中的每一个中的每个频率的时间序列的大小。 索引计算器从针对多个频率中的每一个的观察数据计算索引值。 索引值表示使用每个频率的观察数据学习分离矩阵的重要性。 分离矩阵用于在每个频率处分离多个声音。 频率选择器根据每个频率的索引值选择一个或多个频率。 学习处理器通过使用所选频率的观察数据通过使用给定的初始分离矩阵学习来确定分离矩阵。

公开(公告)号：US20120106746A1

公开(公告)日：2012-05-03

申请号：US13284170

申请日：2011-10-28

申请人： Jordi BONADA ,  Jordi Janer ,  Ricard Marxer ,  Yasuyuki Umeyama ,  Kazunobu Kondo ,  Francisco Garcia

发明人： Jordi BONADA ,  Jordi Janer ,  Ricard Marxer ,  Yasuyuki Umeyama ,  Kazunobu Kondo ,  Francisco Garcia

IPC分类号： H04R29/00

CPC分类号： G10L25/90 ,  G10H2210/066 ,  G10H2210/091

摘要： Candidate frequencies per unit segment of an audio signal are identified. First processing section identifies an estimated train that is a time series of candidate frequencies, each selected for a different one of the segments, arranged over a plurality of the unit segments and that has a high likelihood of corresponding to a time series of fundamental frequencies of a target component. Second processing section identifies a state train of states, each indicative of one of sound-generating and non-sound-generating states of the target component in a different one of the segments, arranged over the unit segments. Frequency information which designates, as a fundamental frequency of the target component, a candidate frequency corresponding to the unit segment in the estimated train is generated for each unit segment corresponding to the sound-generating state. Frequency information indicative of no sound generation is generated for each unit segment corresponding to the non-sound-generating state.

摘要翻译： 识别音频信号的每单位片段的候选频率。 第一处理部分识别作为候选频率的时间序列的估计列车，每个候选频率被选择用于不同的一个段，排列在多个单位段上，并且具有对应于基本频率的时间序列的高可能性 目标组件。 第二处理部分识别状态列，每个状态列表指示布置在单位段上的不同的段中的目标分量的声音产生和非声音生成状态之一。 针对对应于发声状态的每个单位片段生成作为目标分量的基本频率指定与估计列车中的单位片段对应的候选频率的频率信息。 针对对应于非声音产生状态的每个单位片段产生指示没有声音产生的频率信息。