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公开(公告)号：EP2458587A1
公开(公告)日：2012-05-30
申请号：EP11009360.6
申请日：2011-11-25
IPC分类号： G10L21/02
CPC分类号： G10L21/0208 , G10L2021/02085 , G10L2021/02163
摘要： An audio processing apparatus generates a suppression coefficient sequence that is composed of coefficient values corresponding to frequency components of an audio signal, the frequency components being multiplied by the corresponding coefficient values to suppress noise components of the audio signal. In the audio processing apparatus, a characteristic value calculation unit calculates a noise characteristic value depending on a shape of a magnitude distribution of the audio signal. An intensity setting unit variably sets a suppression intensity of the noise components based on the noise characteristic value. A coefficient sequence generation unit generates the suppression coefficient sequence based on the audio signal and the suppression intensity.
摘要翻译： 音频处理装置生成由与音频信号的频率分量对应的系数值组成的抑制系数序列，频率分量乘以相应的系数值，以抑制音频信号的噪声分量。 在音频处理装置中，特征值计算单元根据音频信号的幅度分布的形状来计算噪声特性值。 强度设定单元根据噪声特性值可变地设定噪声成分的抑制强度。 系数序列生成单元基于音频信号和抑制强度生成抑制系数序列。
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公开(公告)号：EP2144233A3
公开(公告)日：2013-09-11
申请号：EP09164896.4
申请日：2009-07-08
IPC分类号： G10L21/02
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.
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公开(公告)号：EP2597639A3
公开(公告)日：2017-12-13
申请号：EP12007595.7
申请日：2012-11-08
申请人： YAMAHA CORPORATION
发明人： Kondo, Kazunobu
IPC分类号： G10K15/12
摘要： In a sound processing device, an index value calculation unit calculates a first index value that follows change of a sound signal at a first following degree and a second index value that follows the change of the sound signal at a second following degree which is lower than the first following degree. An adjustment value calculation unit calculates an adjustment value effective to adjust a reverberation component of the sound signal based on difference between the first index value and the second index value. A reverberation adjustment unit applies the adjustment value to the sound signal.
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公开(公告)号：EP2640096B1
公开(公告)日：2015-10-28
申请号：EP13001225.5
申请日：2013-03-12
申请人： YAMAHA CORPORATION
CPC分类号： H04R3/04 , H04S7/302 , H04S7/305 , H04S7/40 , H04S2420/07
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公开(公告)号：EP2360685B1
公开(公告)日：2015-07-15
申请号：EP11000139.3
申请日：2011-01-11
申请人： Yamaha Corporation
发明人： Yamada, Makoto , Kondo, Kazunobu
IPC分类号： G10L21/0216
CPC分类号： H04B15/00 , G10L21/0216
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公开(公告)号：EP2485218A2
公开(公告)日：2012-08-08
申请号：EP12154218.7
申请日：2012-02-07
申请人： YAMAHA Corporation
发明人： Umeyama, Yasuyuki , Kondo, Kazunobu , Takahashi, Yu , Bonada, Jordi , Janer, Jordi , Marxer, Ricard
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 (100) 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（100）将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，并在显示画面上显示计算出的声像位置结果， 具有频率分量和声像位置的坐标轴的坐标系。 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成分的幅度水平和指定的 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。
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公开(公告)号：EP2485218B1
公开(公告)日：2019-05-22
申请号：EP12154218.7
申请日：2012-02-07
申请人： YAMAHA Corporation
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公开(公告)号：EP2187389A3
公开(公告)日：2014-03-26
申请号：EP09014232.4
申请日：2009-11-13
申请人： Yamaha Corporation
发明人： Yamada, Makoto , Kondo, Kazunobu
IPC分类号： G10L21/02
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： 信号处理设备以多个频率处理多个观测信号。 多个观测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，存储器存储多个观测信号的观测数据。 观测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。 索引计算器从多个频率中的每一个的观测数据计算索引值。 指标值指示使用每个频率的观测数据来学习分离矩阵的重要性。 分离矩阵用于在每个频率处将多个声音彼此分开。 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测数据以给定初始分离矩阵进行学习来确定分离矩阵。
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9.发明公开Technique for estimating particular audio component 有权Technik zurSchätzungeiner bestimmten Audiokomponente
公开(公告)号：EP2447939A2
公开(公告)日：2012-05-02
申请号：EP11186826.1
申请日：2011-10-27
申请人： Yamaha Corporation
发明人： Bonada, Jordi , Janer, Jordi , Marxer, Ricard , Umeyama, Yasuyuki , Kondo, Kazunobu , Garcia, Francisco
IPC分类号： G10L11/04
CPC分类号： G10L25/90 , G10H2210/066 , G10H2210/091
摘要： Frequency detection section (62) identifies candidate frequencies (Fc(1) - Fc(N)) per unit segment (Tu) of an audio signal (x). First processing section (71) identifies an estimated train (RA) that is a time series of candidate frequencies (Fc(n)), 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 (Ftar) of a target component Second processing section (72) identifies a state train (RB) 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. Information generation section (68) generates frequency information (DF) per unit segment (Tu), the frequency information generated for each unit segment corresponding to the sound-generating state designating, as a fundamental frequency (Ftar) of the target component, a candidate frequency (Fc(n)) corresponding to the unit segment in the estimated train (RA), the frequency information generated for each unit segment corresponding to the non-sound-generating state being indicative of no sound generation.
摘要翻译： 频率检测部分（62）识别音频信号（x）的单位片段（Tu）的候选频率（Fc（1）-Fc（N））。 第一处理部分（71）识别排列在多个单位段上的，对于不同的一个段选择的候选频率（Fc（n））的时间序列的估计列车（RA），并且具有 对应于目标分量的基频（Ftar）的时间序列的高可能性第二处理部分（72）识别状态列（RB），每个状态列（RB）表示发声和非声音产生状态之一 目标组件在不同的一个段中，布置在单元段上。 信息生成部（68）生成每单位片段（Tu）的频率信息（DF），对与指定的声音生成状态对应的每个单位片段生成的频率信息作为目标成分的基本频率（Ftar），候选 对应于估计列车（RA）中的单位段的频率（Fc（n）），对应于非声音产生状态的每个单位段产生的频率信息表示没有声音产生。
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公开(公告)号：EP1978509A3
公开(公告)日：2011-10-19
申请号：EP08103318.5
申请日：2008-04-02
申请人： Yamaha Corporation
发明人： Kondo, Kazunobu
IPC分类号： G10L21/02
CPC分类号： G10L21/0208
摘要： A noise suppressing apparatus suppresses a noise component of a sound signal which contains the noise component and a signal component. In the apparatus, a frequency analyzing section divides the sound signal into a plurality of frames such that adjacent frames overlap with each other along a time axis, and computes a first spectrum of each frame. A noise suppressing section suppresses a noise component of the first spectrum so as to provide a second spectrum of each frame in which the noise component is suppressed. A frequency specifying section specifies a frequency of a noise component of each frame. A phase controlling section varies a phase of the noise component corresponding to the specified frequency in the second spectrum by a different variation amount each frame. A signal synthesizing section combines the frames after the second spectrum of each frame is processed by the phase controlling means, such that adjacent frames overlap with each other along the time axis so as to output the sound signal.
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