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1. 发明公开

EP3111667A1 PROCEDE ET SYSTEME D'EGALISATION ACOUSTIQUE AUTOMATISE 有权
标题翻译： VERFAHREN UND SYSTEM ZUR AUTOMATISCHEN AKUSTISCHEN ENTZERRUNG
公开(公告)号：EP3111667A1
公开(公告)日：2017-01-04
申请号：EP15703951.2
申请日：2015-02-03
申请人： Arkamys
发明人： AMADU, Frédéric , DEVALLEZ, Delphine
IPC分类号： H04R3/04
CPC分类号： H04R3/04 , H04R2499/13
摘要： The present invention relates to a system and to a method for automatic acoustic equalisation, characterised in that it comprises the steps of: measuring N impulse responses R1
1 , R1
2 , etc., R1
N following the emission of a pre-calibrated sound signal received by N microphones; calculating N corresponding frequency responses by means of fast Fourier transform; establishing an average M of the N frequency responses; translating said average M of the N frequency responses into a logarithmic frequency scale; interpolating a target signature sound curve C
ec from a specific number of points selected by a user; translating said target signature sound curve C
ec into a logarithmic frequency scale; comparing said averaged response M and said target response C
ec by calculating the difference between said averaged response M and said target signature sound response C
ec ; analysing the curve C
diff resulting from the difference between said averaged response M and said target response C
ec ; and determining filter parameters for reducing the difference between said averaged response M and said target response C
ec by firstly processing the local maxima in descending order according to the gain thereof, then the local minima, and by carrying out consecutive iterations.
摘要翻译：本发明涉及一种用于自动声学均衡的系统和方法，其特征在于包括以下步骤：在发出预校准的声音信号之后测量N个脉冲响应R1 1，R1 2等，R1 N 由N个麦克风接收; 通过快速傅里叶变换计算N个相应的频率响应; 建立N个频率响应的平均值M; 将所述N个频率响应的平均值M转换成对数频率标度; 从用户选择的特定点数内插目标签名声音曲线Cec; 将所述目标签名声音曲线Cec转换成对数频率标度; 通过计算所述平均响应M和所述目标签名声音响应Cec之间的差来比较所述平均响应M和所述目标响应Cec; 分析由所述平均响应M和所述目标响应Cec之间的差异产生的曲线Cdiff; 以及通过首先根据其增益，然后是局部最小值，并通过执行连续的迭代，按照降序处理本地最大值，来确定滤波器参数，以减小所述平均响应M和所述目标响应Cec之间的差。

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