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1. 发明公开

EP3121814A1 A METHOD AND A SYSTEM FOR DECOMPOSITION OF ACOUSTIC SIGNAL INTO SOUND OBJECTS, A SOUND OBJECT AND ITS USE 无效
标题翻译： VERFAHREN UND系统ZUR ZERLEGUNG EINES AKUSTISCHEN信号在KLANGOBJEKTE，KLANGOBJEKT UND DESSEN VERWENDUNG
公开(公告)号：EP3121814A1
公开(公告)日：2017-01-25
申请号：EP15002209.3
申请日：2015-07-24
申请人： Sound object techology S.A. in organization
发明人： Pluta, Adam
IPC分类号： G10L25/90
CPC分类号： G10L25/90 , G10H1/06 , G10H2210/056 , G10H2240/145 , G10H2250/055 , G10L2025/906
摘要： The object of the invention is a method and a system for decomposition of acoustic signal into sound objects having the form of signals with slowly-varying amplitude and frequency, as well as sound objects and their use. The system for decomposition of acoustic signal into sound objects having the form of sinusoidal waveforms with slowly varying amplitude and frequency, comprising a sub-system for determining parameters of a short term signal model and a sub-system for determining parameters of a long term signal model based on said parameters, wherein said subsystem for determining short term parameters comprises a converter system for conversion of the analogue acoustic signal into a digital input signal P IN characterized in that said subsystem for determining short term parameters further comprises a filter bank (20) with filter central frequencies distributed according to logarithmic distribution, each digital filter having a window length proportionally to the central frequency wherein each filter (20) is adapted to determine a real value FC (n) and an imaginary value FS (n) of said filtered signal, said filter bank (2) being connected to a system for tracking objects (3), wherein said system for tracking objects (3) comprises a spectrum analysing system (31) adapted to detect all constituent elements of the input signal P IN , a voting system (32) adapted to determine the frequency of all detected constituent elements based on maximum values of the function FG(n) resulting from a mathematical operation reflecting the number of neighbouring filters (20) which output an angular frequency value substantially similar to an angular frequency value of each consecutive filter (20), and in that said subsystem for determining long term parameters comprises a system for associating objects (33), a shape forming system (37) adapted to determine characteristic points describing slowly-varying sinusoidal waveforms, an active objects database (34) and a sound objects database (35).
摘要翻译：本发明的目的是一种用于将声信号分解成具有缓慢变化的幅度和频率的信号形式以及声音对象及其用途的声音对象的方法和系统。用于将声信号分解成具有缓慢变化的振幅和频率的正弦波形形式的声音对象的系统，包括用于确定短期信号模型的参数的子系统和用于确定长期信号的参数的子系统模型，其中用于确定短期参数的所述子系统包括用于将模拟声信号转换为数字输入信号P IN的转换器系统，其特征在于用于确定短期参数的所述子系统还包括滤波器组（20）滤波器中心频率根据对数分布分布，每个数字滤波器具有与中心频率成比例的窗口长度，其中每个滤波器（20）适于确定所述滤波器的实际值FC（n）和虚值FS（n）信号，所述滤波器组（2）连接到用于跟踪对象（3）的系统，其中所述系统用于跟踪对象（3）包括适于检测输入信号P IN的所有构成要素的频谱分析系统（31），适用于基于函数FG的最大值来确定所有检测到的构成元素的频率的投票系统（32）（20）的相邻滤波器（20）的数量产生的数学运算（n），其中输出与每个连续滤波器（20）的角频率值基本相似的角频率值，并且所述用于确定长期参数的子系统包括：用于关联对象（33）的系统，适于确定描述缓慢变化的正弦波形的特征点的形状形成系统（37），活动对象数据库（34）和声音对象数据库（35）。

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