公开(公告)号：US10217469B2

公开(公告)日：2019-02-26

申请号：US14769998

申请日：2014-02-25

Applicant: INSTITUT MINES TELECOM

Inventor： Sebastien Fenet ,  Yves Grenier ,  Richard Gael

IPC: G10L19/018 ,  G06F17/30 ,  G10L25/54 ,  G10H1/00 ,  H04H60/37 ,  H04H60/58

Abstract: The invention concerns a method for generating a signature of a musical audio signal of a given duration, the method comprising the following steps: —modelling (104) the musical audio signal to obtain, for each frequency band of a set of n frequency bands, a diagram representing the energy of the audio signal for the frequency band, on the basis of the time during said given duration; —determining (103) musical transition times tk of the audio signal during the given duration; —associating (105) each musical transition time tk with an item of local information comprising a vector of n values representative, respectively, of the energy of the audio signal in each of the n diagrams obtained between musical transition time tk and a subsequent musical transition time tk+1 and/or a vector of n values representative, respectively, of the energy of the audio signal in each of the n diagrams obtained between musical transition time tk and a preceding musical transition time tk−1; —determining (106), on the basis of the local information associated with each musical transition time tk, a key associated with the musical transition time, the determined keys forming a first set of keys of the audio signal; —generating (107) a signature of the musical audio signal comprising pairs of keys from the first set of keys and associated musical transition times tk.

公开(公告)号：US20160005412A1

公开(公告)日：2016-01-07

申请号：US14769998

申请日：2014-02-25

Applicant: INSTITUT MINES TELECOM

Inventor： Sebastien FENET ,  Yves GRENIER ,  Richard Gael

IPC: G10L19/018 ,  G06F17/30 ,  G10L25/54

CPC classification number: G10L19/018 ,  G06F17/30743 ,  G10H1/0008 ,  G10H2210/051 ,  G10H2210/081 ,  G10H2220/005 ,  G10H2240/141 ,  G10H2250/031 ,  G10L25/54 ,  H04H60/37 ,  H04H60/58

Abstract: The invention concerns a method for generating a signature of a musical audio signal of a given duration, the method comprising the following steps: —modelling (104) the musical audio signal to obtain, for each frequency band of a set of n frequency bands, a diagram representing the energy of the audio signal for the frequency band, on the basis of the time during said given duration; —determining (103) musical transition times tk of the audio signal during the given duration; —associating (105) each musical transition time tk with an item of local information comprising a vector of n values representative, respectively, of the energy of the audio signal in each of the n diagrams obtained between musical transition time tk and a subsequent musical transition time tk+1 and/or a vector of n values representative, respectively, of the energy of the audio signal in each of the n diagrams obtained between musical transition time tk and a preceding musical transition time tk−1; —determining (106), on the basis of the local information associated with each musical transition time tk, a key associated with the musical transition time, the determined keys forming a first set of keys of the audio signal; —generating (107) a signature of the musical audio signal comprising pairs of keys from the first set of keys and associated musical transition times tk.

Abstract translation: 本发明涉及一种用于产生给定持续时间的音乐音频信号的签名的方法，该方法包括以下步骤： - 为了获得（104）音乐音频信号以获得对于一组n个频带的每个频带， 基于所述给定持续时间内的时间，表示频带的音频信号的能量的图; 在给定持续时间内确定（103）音频信号的音乐转换时间tk; （105）每个音乐过渡时间tk与本地信息项分别包括分别代表在音乐转换时间tk和随后的音乐转换之间获得的每个n图中的音频信号的能量的n个值的矢量 时间tk + 1和/或n个值的矢量分别代表在音乐转换时间tk和先前的音乐转换时间tk-1之间获得的每个n个图形中的音频信号的能量; - 基于与每个音乐过渡时间tk相关联的本地信息确定（106）与音乐转换时间相关联的键，所确定的键形成音频信号的第一组键; 产生（107）音乐音频信号的签名，该签名包括来自第一组密钥和相关联的音乐过渡时间t k的键对。