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    • 8. 发明授权
    • Music-piece classification based on sustain regions
    • 基于维持区域的音乐片段分类
    • US08442816B2
    • 2013-05-14
    • US12929713
    • 2011-02-10
    • Ichiro Shishido
    • Ichiro Shishido
    • G10H2240/075G10L11/00G10L19/02
    • G10H1/0008G10H2210/066G10H2240/081G10H2250/235G10L25/90
    • Audio data representative of a music piece is converted into data components in respective different frequency bands for every unit time interval to generate time frequency data pieces assigned to the respective different frequency bands. From the generated time frequency data pieces, detection is made as to each sustain region in which an effective data component in one of the frequency bands continues to occur during a reference time interval or longer. A feature quantity is calculated from at least one of (1) a number of the detected sustain regions and (2) magnitudes of the effective data components in the detected sustain regions. The music piece is classified in response to the calculated feature quantity.
    • 代表乐曲的音频数据在每个单位时间间隔被转换成各个不同频带的数据分量,以产生分配给各个不同频带的时间频率数据。 从所生成的时间频率数据中,对参考时间间隔或更长时间内持续发生频带中的一个频带中的有效数据分量的每个维持区域进行检测。 从(1)检测到的维持区域的数量和(2)检测到的维持区域中的有效数据分量的大小中的至少一个计算特征量。 乐曲根据计算的特征量进行分类。
    • 9. 发明授权
    • Musical piece recommendation system and method
    • 音乐推荐系统及方法
    • US08370277B2
    • 2013-02-05
    • US12671255
    • 2008-07-31
    • Masataka GotoKazuyoshi YoshiiHiroshi Okuno
    • Masataka GotoKazuyoshi YoshiiHiroshi Okuno
    • G06F15/18
    • G06F17/30766G06Q30/02G10H1/0008G10H2210/031G10H2240/081G10H2240/105G10H2240/131
    • A musical piece recommendation system that allows instantaneous registration of a new user and a new musical piece without retraining in a basic training section. A first incremental training section monitors a rating history storage section, and each time a change is made to a rating history or a new user is added, performs updating of or addition of the topic selection probability for the user for which the change is made to the rating history or for the new user such that the likelihood determined by a basic training section is kept maximized. A second incremental training section monitors an acoustic feature storage section, and each time a new musical piece is added to perform addition to acoustic features, adds the musical piece selection probability related to the added musical piece such that the likelihood determined by the basic training section is kept maximized.
    • 一种音乐作品推荐系统,允许新用户和新音乐作品的瞬时注册,而不需要在基本训练部分重新训练。 第一增量训练部分监视评级历史存储部分,并且每当对评级历史进行改变或添加新用户时,对进行了改变的用户进行主题选择概率的更新或添加 评级历史或新用户使得由基本训练部确定的可能性被保持最大化。 第二增量训练部分监视声学特征存储部分,并且每当添加新的音乐作品以对声学特征进行加法时,增加与所添加的乐曲相关的乐曲选择概率,使得由基本训练部分确定的可能性 被保持最大化。