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1. 发明授权

US08853516B2 Audio analysis apparatus 有权
标题翻译：音频分析仪
公开(公告)号：US08853516B2
公开(公告)日：2014-10-07
申请号：US13081408
申请日：2011-04-06
申请人： Keita Arimoto , Sebastian Streich , Bee Suan Ong
发明人： Keita Arimoto , Sebastian Streich , Bee Suan Ong
IPC分类号： G10H1/00
CPC分类号： G10H1/0008 , G10H1/40 , G10H2210/066 , G10H2240/141 , G10H2250/235
摘要： In an audio analysis apparatus, a component acquirer acquires a component matrix composed of an array of component values, columns of the component matrix corresponding to the sequence of unit periods of an audio signal and rows of the component matrix corresponding to a series of unit bands of the audio signal arranged in a frequency-axis direction. A difference generator generates a plurality of shift matrices each obtained by shifting the columns of the component matrix in the time-axis direction with a different shift amount, and generates a plurality of difference matrices each composed of an array of element values in correspondence to the plurality of the shift matrices, the element value representing a difference between the corresponding component values of the shift matrix and the component matrix. A feature amount extractor generates a tonal feature amount including a plurality of series of feature values corresponding to the plurality of difference matrices, one series of feature values corresponding to the series of unit bands of the difference matrix, one feature value representing a sequence of element values arranged in the time-axis direction at the corresponding unit band of the difference matrix.
摘要翻译：在音频分析装置中，分量获取器获取由分量值阵列组成的分量矩阵，与音频信号的单位周期序列对应的分量矩阵的列和与一系列单位频带相对应的分量矩阵的行的频率轴方向上布置的音频信号。差分发生器生成多个移位矩阵，每个移位矩阵通过以不同的移位量移位时间轴方向上的分量矩阵的列而获得，并且生成多个差分矩阵，每个差分矩阵由对应于多个移位矩阵，元素值表示移位矩阵的相应分量值与分量矩阵之间的差。特征量提取器产生包括对应于多个差分矩阵的多个特征值系列的色调特征量，对应于差分矩阵的一系列单位带的一系列特征值，一个特征值表示元素序列在差分矩阵的相应单位带上沿时间轴排列的值。

2. 发明申请

US20110268284A1 AUDIO ANALYSIS APPARATUS 有权
标题翻译：音频分析装置
公开(公告)号：US20110268284A1
公开(公告)日：2011-11-03
申请号：US13081408
申请日：2011-04-06
申请人： Keita Arimoto , Sebastian Streich , Bee Suan Ong
发明人： Keita Arimoto , Sebastian Streich , Bee Suan Ong
IPC分类号： H04R29/00
CPC分类号： G10H1/0008 , G10H1/40 , G10H2210/066 , G10H2240/141 , G10H2250/235
摘要： In an audio analysis apparatus, a component acquirer acquires a component matrix composed of an array of component values, columns of the component matrix corresponding to the sequence of unit periods of an audio signal and rows of the component matrix corresponding to a series of unit bands of the audio signal arranged in a frequency-axis direction. A difference generator generates a plurality of shift matrices each obtained by shifting the columns of the component matrix in the time-axis direction with a different shift amount, and generates a plurality of difference matrices each composed of an array of element values in correspondence to the plurality of the shift matrices, the element value representing a difference between the corresponding component values of the shift matrix and the component matrix. A feature amount extractor generates a tonal feature amount including a plurality of series of feature values corresponding to the plurality of difference matrices, one series of feature values corresponding to the series of unit bands of the difference matrix, one feature value representing a sequence of element values arranged in the time-axis direction at the corresponding unit band of the difference matrix.
摘要翻译：在音频分析装置中，分量获取器获取由分量值阵列组成的分量矩阵，与音频信号的单位周期序列对应的分量矩阵的列和与一系列单位频带相对应的分量矩阵的行的频率轴方向上布置的音频信号。差分发生器生成多个移位矩阵，每个移位矩阵通过以不同的移位量移位时间轴方向上的分量矩阵的列而获得，并且生成多个差分矩阵，每个差分矩阵由对应于多个移位矩阵，元素值表示移位矩阵的相应分量值与分量矩阵之间的差。特征量提取器产生包括对应于多个差分矩阵的多个特征值系列的色调特征量，对应于差分矩阵的一系列单位带的一系列特征值，一个特征值表示元素序列在差分矩阵的相应单位带上沿时间轴排列的值。

3. 发明申请

US20060011050A1 Electronic percussion instrument and percussion tone control program 有权
标题翻译：电子打击乐器和打击乐调控程序
公开(公告)号：US20060011050A1
公开(公告)日：2006-01-19
申请号：US11181185
申请日：2005-07-13
申请人： Keita Arimoto
发明人： Keita Arimoto
IPC分类号： G10H1/02
CPC分类号： G10H7/02 , G10H1/0008 , G10H2210/351 , G10H2230/275
摘要： An electronic percussion instrument which is capable of accurately discriminating roll performance to thereby electronically produce percussion tones closer to tones produced by a natural percussion instrument. A waveform memory 6 stores waveform data of percussion tones to be output for roll performance and waveform data of percussion tones to be output for non-roll performance. A work memory 4 stores values of parameters. A drum pad 1 has a percussion surface part 10, and a percussion pattern-detecting section detects a pattern of percussion applied to the percussion surface part 10 of the drum pad 1 and outputs a value of the parameter indicative of the detected pattern of percussion. The values of the parameter output from the percussion pattern-detecting section are sequentially stored in a buffer area of the work memory 4 in the order of output. Whenever a new value of the parameter is stored in the buffer area, a waveform data-determining section determines one of the two waveform data stored in the waveform memory 6 according to at least two values of the parameter stored before the new value of the parameter was stored and the new value of the parameter. A tone generation controller 7 reads out the determined waveform data from the waveform memory 6 and outputs a musical tone signal generated based on the read-out waveform data.
摘要翻译：一种电子打击乐器，能够准确地辨别唱片的性能，从而电子地产生更接近自然打击乐器产生的音调的打击乐。波形存储器6存储要输出的用于滚动性能的打击乐音的波形数据和用于非滚动性能输出的打击乐音的波形数据。工作存储器4存储参数的值。鼓垫1具有冲击表面部分10，并且冲击图案检测部分检测施加到鼓垫1的冲击表面部分10的冲击图案，并输出表示检测到的冲击图案的参数值。从打击乐图案检测部输出的参数的值按照输出顺序依次存储在工作存储器4的缓冲区域中。每当参数的新值存储在缓冲区域中时，波形数据确定部分根据存储在参数的新值之前的参数的至少两个值来确定存储在波形存储器6中的两个波形数据之一被存储和参数的新值。音调产生控制器7从波形存储器6读出确定的波形数据，并输出基于读出的波形数据产生的乐音信号。

4. 发明授权

US09053696B2 Searching for a tone data set based on a degree of similarity to a rhythm pattern 有权
标题翻译：基于与节奏模式的相似度搜索音调数据集
公开(公告)号：US09053696B2
公开(公告)日：2015-06-09
申请号：US13395433
申请日：2011-12-01
申请人： Daichi Watanabe , Keita Arimoto
发明人： Daichi Watanabe , Keita Arimoto
IPC分类号： G10H1/40
CPC分类号： G10H1/40 , G10H2210/005 , G10H2210/071 , G10H2210/341 , G10H2210/361 , G10H2240/141
摘要： It is an object of the present invention to provide an improved technique for searching for a tone data set of a phrase constructed in a rhythm pattern that satisfies a predetermined condition of similarity to a rhythm pattern intended by a user. The user inputs a rhythm pattern via a rhythm input device. An input rhythm pattern storage section stores the input rhythm pattern into a RAM on the basis of clock signals output from a bar line clock output section and trigger data included in the input rhythm pattern. A rhythm pattern search section searches through a rhythm database for a tone data set presenting the highest degree of similarity to the stored input rhythm pattern. A performance processing section causes a sound output section to audibly output the searched-out tone data set.
摘要翻译：本发明的目的是提供一种用于搜索以节拍模式构成的短语的音调数据集的改进技术，其满足与用户想要的节奏模式相似的预定条件。用户通过节奏输入设备输入节奏模式。输入节奏模式存储部分基于从条形线时钟输出部分输出的时钟信号和触发包括在输入节奏模式中的数据，将输入的节奏模式存储在RAM中。节奏模式搜索部分通过节奏数据库搜索与存储的输入节奏模式呈现最高相似度的乐音数据集。演奏处理部分使声音输出部分可听见地输出搜索出的乐音数据集。

5. 发明申请

US20110271819A1 MUSIC ANALYSIS APPARATUS 有权
标题翻译：音乐分析装置
公开(公告)号：US20110271819A1
公开(公告)日：2011-11-10
申请号：US13081337
申请日：2011-04-06
申请人： Keita ARIMOTO , Sebastian Streich , Bee Suan Ong
发明人： Keita ARIMOTO , Sebastian Streich , Bee Suan Ong
IPC分类号： G10H1/40
CPC分类号： G10H1/40 , G10H2210/076 , G10H2240/141 , G10H2250/235
摘要： In a musical analysis apparatus, a spectrum acquirer acquires a spectrum for each frame of an audio signal representing a piece of music. A beat specifier specifies a sequence of beats of the audio signal. A feature amount extractor divides an interval between the beats into a plurality of analysis periods such that one analysis period contains a plurality of frames, and separates the spectrum of the frames contained in one analysis period into a plurality of analysis bands so as to set a plurality of analysis units in one analysis period in correspondence with the plurality of the analysis bands, such that one analysis unit contains components of the spectrum belonging to the corresponding analysis band. The feature amount extractor further calculates a feature value of each analysis unit based on the components of the spectrum contained in each analysis unit, thereby generating a rhythmic feature amount that is an array of the feature values calculated for the analysis units and that features a rhythm of the piece of music.
摘要翻译：在音乐分析装置中，频谱获取器获取表示音乐片段的音频信号的每个帧的频谱。节拍指定符指定音频信号的节拍序列。特征量提取器将节拍之间的间隔划分成多个分析周期，使得一个分析周期包含多个帧，并将包含在一个分析周期中的帧的频谱分离成多个分析频带，以便设置在一个分析周期内与多个分析带对应的多个分析单元，使得一个分析单元包含属于相应分析带的频谱的分量。特征量提取器还基于每个分析单元中包含的频谱的分量来计算每个分析单元的特征值，从而生成作为针对分析单元计算的特征值的阵列的节奏特征量，并且具有节奏的音乐。

6. 发明授权

US07659472B2 Method, apparatus, and program for assessing similarity of performance sound 有权
标题翻译：用于评估性能声音相似性的方法，装置和程序
公开(公告)号：US07659472B2
公开(公告)日：2010-02-09
申请号：US12177398
申请日：2008-07-22
申请人： Keita Arimoto
发明人： Keita Arimoto
IPC分类号： G10H7/08 , A63H5/00
CPC分类号： G09B15/00 , G10H1/0008 , G10H2210/056 , G10H2210/066 , G10H2240/131 , G10H2240/325
摘要： A similarity assessment apparatus is provided for assessing a performance sound based on a model performance sound. In the apparatus, a probability density function generating unit divides data of a performance sound into a sequence of frames each having a predetermined temporal length, and generates a probability density function of a fundamental frequency for each frame of the performance sound. A probability density function providing portion provides a probability density function of a fundamental frequency for each frame of the model performance sound. A similarity assessment unit compares the generated probability density function of a frame of the performance sound with the provided probability density function of a frame of the model performance sound so as to assess a similarity between the performance sound and the model performance sound.
摘要翻译：提供了一种基于模型演奏声音来评估演奏声音的相似性评估装置。在该装置中，概率密度函数生成单元将演奏声音的数据分割为具有预定时间长度的帧序列，并且对于演奏声音的每一帧生成基本频率的概率密度函数。概率密度函数提供部分为模型演奏声音的每个帧提供基频的概率密度函数。相似性评估单元将演奏声音的帧的所生成的概率密度函数与所提供的模型演奏声音的帧的概率密度函数进行比较，以评估演奏声音和模型演奏声音之间的相似性。

7. 发明申请

US20090025538A1 Method, Apparatus, and Program for Assessing Similarity of Performance Sound 有权
标题翻译：评估性能相似性的方法，仪器和程序
公开(公告)号：US20090025538A1
公开(公告)日：2009-01-29
申请号：US12177398
申请日：2008-07-22
申请人： Keita ARIMOTO
发明人： Keita ARIMOTO
IPC分类号： G10H7/04
CPC分类号： G09B15/00 , G10H1/0008 , G10H2210/056 , G10H2210/066 , G10H2240/131 , G10H2240/325
摘要： A similarity assessment apparatus is provided for assessing a performance sound based on a model performance sound. In the apparatus, a probability density function generating unit divides data of a performance sound into a sequence of frames each having a predetermined temporal length, and generates a probability density function of a fundamental frequency for each frame of the performance sound. A probability density function providing portion provides a probability density function of a fundamental frequency for each frame of the model performance sound. A similarity assessment unit compares the generated probability density function of a frame of the performance sound with the provided probability density function of a frame of the model performance sound so as to assess a similarity between the performance sound and the model performance sound.
摘要翻译：提供了一种基于模型演奏声音来评估演奏声音的相似性评估装置。在该装置中，概率密度函数生成单元将演奏声音的数据分割为具有预定时间长度的帧序列，并且对于演奏声音的每一帧生成基本频率的概率密度函数。概率密度函数提供部分为模型演奏声音的每个帧提供基频的概率密度函数。相似性评估单元将演奏声音的帧的所生成的概率密度函数与所提供的模型演奏声音的帧的概率密度函数进行比较，以评估演奏声音和模型演奏声音之间的相似性。

8. 发明申请

US20080262836A1 PITCH ESTIMATION APPARATUS, PITCH ESTIMATION METHOD, AND PROGRAM 有权
标题翻译： PITCH估计装置，PITCH估计方法和程序
公开(公告)号：US20080262836A1
公开(公告)日：2008-10-23
申请号：US11849217
申请日：2007-08-31
申请人： Masataka Goto , Takuya Fujishima , Keita Arimoto
发明人： Masataka Goto , Takuya Fujishima , Keita Arimoto
IPC分类号： G10L11/04
CPC分类号： G10H3/125 , G10H2210/066 , G10H2250/031 , G10L25/90
摘要： In a pitch estimation apparatus, a function estimation part estimates a fundamental frequency probability density function of an audio signal by repeating a weight calculation process and an estimated shape specification process. The weight calculation process calculates a weight of each tone model of each fundamental frequency based on an estimated shape of each tone model of each fundamental frequency. The estimated shape indicates a degree of dominancy of a corresponding tone model in a total harmonic structure of the audio signal. The estimated shape specification process specifies each estimated shape of each tone model based on an amplitude spectrum of the audio signal, the harmonic structure of each tone model and the weight of each tone model. A similarity analysis part calculates a similarity index value indicating a degree of similarity between each tone model and corresponding estimated shape. A weight correction part reduces a weight of a tone model of a certain fundamental frequency having the similarity index value indicating that the tone model and the corresponding estimated shape are not similar to each other.
摘要翻译：在音调估计装置中，功能估计部通过重复权重计算处理和估计形状规定处理来估计音频信号的基频概率密度函数。权重计算处理基于每个基本频率的每个音调模型的估计形状来计算每个基本频率的每个音调模型的权重。估计的形状表示音频信号的总谐波结构中对应的音调模型的统治程度。估计的形状规格处理根据音频信号的幅度谱，每个音调模型的谐波结构和每个音调模型的权重来指定每个音调模型的每个估计的形状。相似度分析部分计算表示每个音调模型与对应的估计形状之间的相似度的相似度指数值。加权校正部分减小具有表示音调模型和对应的估计形状彼此不相似的相似性指数值的某个基本频率的音调模型的权重。

9. 发明申请

US20080053295A1 SOUND ANALYSIS APPARATUS AND PROGRAM 有权
标题翻译：声音分析装置和程序
公开(公告)号：US20080053295A1
公开(公告)日：2008-03-06
申请号：US11849232
申请日：2007-08-31
申请人： Masataka Goto , Takuya Fujishima , Keita Arimoto
发明人： Masataka Goto , Takuya Fujishima , Keita Arimoto
IPC分类号： G10H7/00
CPC分类号： G10H3/125 , G10H2210/066
摘要： A sound analysis apparatus stores sound source structure data defining a constraint on one or more of sounds that can be simultaneously generated by a sound source of an input audio signal. A form estimation part selects fundamental frequencies of one or more of sounds likely to be contained in the input audio signal with peaked weights from various fundamental frequencies during sequential updating and optimizing of weights of tone models corresponding to the various fundamental frequencies, so that the sounds of the selected fundamental frequencies satisfy the sound source structure data, and creates form data specifying the selected fundamental frequencies. A previous distribution imparting part imparts a previous distribution to the weights of the tone models corresponding to the various fundamental frequencies so as to emphasize weights corresponding to the fundamental frequencies specified by the form data created by the form estimation part.
摘要翻译：声音分析装置存储定义对可由输入音频信号的声源同时产生的一个或多个声音的约束的声源结构数据。形式估计部分在顺序更新和优化对应于各种基本频率的乐曲模型的权重的情况下，从各种基本频率中选出可能包含在输入音频信号中的一个或多个声音的基本频率，使得声音所选择的基本频率满足声源结构数据，并且创建指定所选基频的形式数据。先前的分配赋予部分赋予与各种基本频率相对应的乐音模型的权重的先前分布，以便强调与由表单估计部分创建的表单数据指定的基本频率相对应的权重。

10. 发明授权

US08487175B2 Music analysis apparatus 有权
标题翻译：音乐分析仪器
公开(公告)号：US08487175B2
公开(公告)日：2013-07-16
申请号：US13081337
申请日：2011-04-06
申请人： Keita Arimoto , Sebastian Streich , Bee Suan Ong
发明人： Keita Arimoto , Sebastian Streich , Bee Suan Ong
IPC分类号： G10H1/40 , G10H7/00
CPC分类号： G10H1/40 , G10H2210/076 , G10H2240/141 , G10H2250/235
摘要： In a musical analysis apparatus, a spectrum acquirer acquires a spectrum for each frame of an audio signal representing a piece of music. A beat specifier specifies a sequence of beats of the audio signal. A feature amount extractor divides an interval between the beats into a plurality of analysis periods such that one analysis period contains a plurality of frames, and separates the spectrum of the frames contained in one analysis period into a plurality of analysis bands so as to set a plurality of analysis units in one analysis period in correspondence with the plurality of the analysis bands, such that one analysis unit contains components of the spectrum belonging to the corresponding analysis band. The feature amount extractor further calculates a feature value of each analysis unit based on the components of the spectrum contained in each analysis unit, thereby generating a rhythmic feature amount that is an array of the feature values calculated for the analysis units and that features a rhythm of the piece of music.
摘要翻译：在音乐分析装置中，频谱获取器获取表示音乐片段的音频信号的每个帧的频谱。节拍指定符指定音频信号的节拍序列。特征量提取器将节拍之间的间隔划分成多个分析周期，使得一个分析周期包含多个帧，并将包含在一个分析周期中的帧的频谱分离成多个分析频带，以便设置在一个分析周期内与多个分析带对应的多个分析单元，使得一个分析单元包含属于相应分析带的频谱的分量。特征量提取器还基于每个分析单元中包含的频谱的分量来计算每个分析单元的特征值，从而生成作为针对分析单元计算的特征值的阵列的节奏特征量，并且具有节奏的音乐。

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