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公开(公告)号：EP1569199A1
公开(公告)日：2005-08-31
申请号：EP03772700.5
申请日：2003-11-12
申请人： Pioneer Corporation
CPC分类号： G10H1/383 , G10G3/04 , G10H1/0025 , G10H2210/066 , G10H2210/576
摘要： An apparatus and a method for making music data each perform converting an input audio signal indicative of a music piece into a frequency signal indicative of magnitudes of frequency components at predetermined time intervals; extracting frequency components corresponding to tempered tones respectively at the predetermined time intervals from the frequency signal; detecting two chords each formed by a set of three frequency components as the first and second chord candidates, the three frequency components having a large total level of the frequency components corresponding to the extracted tones; and smoothing trains of the detected first and second chord candidates to produce music data.
摘要翻译： 一种用于制作音乐数据的设备和方法，每个执行步骤将表示乐曲的输入音频信号转换成指示预定时间间隔的频率分量的大小的频率信号; 从所述频率信号中分别以所述预定时间间隔提取与调和音对应的频率分量; 检测由一组三个频率分量形成的两个和弦作为第一和第二和弦候选，三个频率分量具有与提取的音调对应的频率分量的总水平高; 以及平滑检测到的第一和弦候选者的列车以产生音乐数据。
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公开(公告)号：EP1569199B1
公开(公告)日：2007-08-22
申请号：EP03772700.5
申请日：2003-11-12
申请人： Pioneer Corporation
CPC分类号： G10H1/383 , G10G3/04 , G10H1/0025 , G10H2210/066 , G10H2210/576
摘要： A musical composition data creation device and method. An input audio signal indicating a musical composition is converted into a frequency signal indicating a frequency component size at a predetermined time interval. A frequency component corresponding to each sound of the equally tempered scale is extracted from the frequency signal at a predetermined time interval. Two accords, each consisting of three frequency components whose level sum is large among the frequency components corresponding to the respective sounds extracted are detected as a first and a second accord candidate. Each string of the first and the second accord candidate detected is subjected to smoothing processing so as to generate musical composition data.
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