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1. 发明授权

EP2093753B1 Sound signal processing apparatus and method 有权
标题翻译：一种音频信号处理和程序
公开(公告)号：EP2093753B1
公开(公告)日：2016-04-13
申请号：EP09152985.9
申请日：2009-02-17
申请人： Yamaha Corporation
发明人： Ong, Bee Suan , Streich, Sebastian , Fujishima, Takuya , Arimoto, Keita
IPC分类号： G10H1/00
CPC分类号： G10H1/0008 , G10H2210/056 , G10H2210/066 , G10H2250/135

2. 发明公开

EP2093753A1 Sound signal processing apparatus and method 有权
标题翻译： Tonsignalverarbeitungsvorrichtung und -verfahren
公开(公告)号：EP2093753A1
公开(公告)日：2009-08-26
申请号：EP09152985.9
申请日：2009-02-17
申请人： Yamaha Corporation
发明人： Ong, Bee Suan , Streich, Sebastian , Fujishima, Takuya , Arimoto, Keita
IPC分类号： G10H1/00
CPC分类号： G10H1/0008 , G10H2210/056 , G10H2210/066 , G10H2250/135
摘要： Character value of a sound signal is extracted for each unit portion, and degrees of similarity between the character values of the individual unit portions are calculated and arranged in a matrix configuration. The degree of similarity matrix has arranged in each column the degrees of similarity acquired by comparing, for each of the unit portions, the sound signal and a delayed sound signal obtained by delaying the sound signal by a time difference equal to an integral multiple of a time length of the unit portion, and it has a plurality of the columns in association with different time differences. Repetition probability, indicative of a level of similarity, is calculated for each of the columns corresponding to the different time differences in the degree of similarity matrix. A plurality of peaks in a distribution of the repetition probabilities are identified. Then, a reference matrix is generated which has predetermined reference values arranged in columns associated with positions of the time differences where the identified peaks are located. The loop region in the sound signal is identified by collating the reference matrix with the degree of similarity matrix.
摘要翻译：针对每个单位部分提取声音信号的字符值，并且以矩阵形式计算并排列各单位部分的字符值之间的相似度。通过比较每个单位部分中的声音信号和延迟声音信号获得的延迟声音信号等于等于1的整数倍的时间差，相似度矩阵在每列中排列了相似度单位部分的时间长度，并且其具有与不同时间差相关联的多个列。对于与相似度矩阵中的不同时间差相对应的每个列，计算指示相似度级别的重复概率。识别重复概率分布中的多个峰。然后，生成参考矩阵，该参考矩阵具有排列在与所识别的峰位于的时间差的位置相关联的列中的预定参考值。通过将参考矩阵与相似度矩阵进行比较来识别声音信号中的环路区域。

3. 发明授权

EP2375407B1 Music analysis apparatus 有权
标题翻译：音乐分析器
公开(公告)号：EP2375407B1
公开(公告)日：2015-05-27
申请号：EP11161256.0
申请日：2011-04-06
申请人： YAMAHA CORPORATION
发明人： Arimoto, Keita , Streich, Sebastian , Ong, Bee Suan
IPC分类号： G10H1/40
CPC分类号： G10H1/40 , G10H2210/076 , G10H2240/141 , G10H2250/235

4. 发明公开

EP2375407A1 Music analysis apparatus 有权
标题翻译： MUSIK-Analysevorrichtung
公开(公告)号：EP2375407A1
公开(公告)日：2011-10-12
申请号：EP11161256.0
申请日：2011-04-06
申请人： YAMAHA CORPORATION
发明人： Arimoto, Keita , Streich, Sebastian , Ong, Bee Suan
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，频谱获取装置获取表示一段音乐的音频信号的每帧的频谱。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中与多个分析频带相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频带的频谱的分量。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，从而生成节奏特征量，该特征量是为分析单元计算的特征值的阵列，并且具有节奏的音乐。

5. 发明授权

EP1923863B1 Music-piece processing apparatus and method 有权
标题翻译：乐曲处理装置和方法
公开(公告)号：EP1923863B1
公开(公告)日：2014-05-07
申请号：EP07120926.6
申请日：2007-11-16
申请人： YAMAHA CORPORATION
发明人： Fujishima, Takuya , Bonada, Jordi , De Boer, Maarten , Streich, Sebastian , Ong, Bee Suan
IPC分类号： G10H1/00
CPC分类号： G10H1/0025 , G10H2210/061 , G10H2210/125 , G10H2220/106 , G10H2240/145

6. 发明公开

EP1923863A1 Music-piece processing apparatus and method 有权
标题翻译： Vorrichtung und Verfahren zur Verarbeitung vonMusikstücken
公开(公告)号：EP1923863A1
公开(公告)日：2008-05-21
申请号：EP07120926.6
申请日：2007-11-16
申请人： YAMAHA CORPORATION
发明人： Fujishima, Takuya , Bonada, Jordi , De Boer, Maarten , Streich, Sebastian , Ong, Bee Suan
IPC分类号： G10H1/00
CPC分类号： G10H1/0025 , G10H2210/061 , G10H2210/125 , G10H2220/106 , G10H2240/145
摘要： For each of a plurality of music pieces, a storage device (20) stores respective tone data (A) of a plurality of fragments of the music piece and respective musical character values (F) of the fragments. Similarity determination section (12) calculates a similarity index value indicative of a degree of similarity between the character values (Fm) of each of the fragments of a main music piece and the character values (Fs) of each individual fragment of a plurality of sub music pieces. Each of the similarity index values calculated for the fragments of each of the sub music pieces can be adjusted in accordance with a user's control. Processing section (18) processes the tone data of each of the fragments of the main music piece on the basis of the tone data of any one of the fragments of the sub music pieces of which the similarity index value indicates sufficient similarity.
摘要翻译：对于多个音乐片段中的每一个，存储装置（20）存储乐曲的多个片段的各个乐音数据（A）和片段的各自的乐曲（F）。相似度判定部（12）计算表示主乐曲的每个片段的字符值（Fm）与多个子片段的每个片段的字符值（Fs）之间的相似度的相似度指标值音乐作品可以根据用户的控制来调整为每个子乐曲的片段计算的每个相似度索引值。处理部（18）根据相似度指标值表示足够的相似度的子音乐片段中的任一片段的乐音数据，处理主乐曲的各片段的乐曲数据。

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