The invention concerns a method, and the associated device 1, for separating one or a plurality of particular digital audio source signals (si) contained in a multichannel mixed digital audio signal (smix) obtained by mixing a plurality of digital audio source signals (sl, sp). According to the invention, the method comprises: determining the modulus of the amplitude or the normalised power of the particular source signal or signals (si) from values representative of said particular source signal or signals contained in the mixed signal, then carrying out minimum variance spatial filtering under linear constraint of the mixed signal in order to obtain each particular source signal (s'i), said filtering being based on the distribution of said particular source signal between at least two channels of the mixed signal, and the modulus of the amplitude or the normalised power of said particular source signal being used as a linear constraint of the filter.
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机译：本发明涉及一种方法和相关设备，用于分离包含在通过混合音频信号而获得的多声道混合数字音频信号（smix）中的一个或多个特定数字音频源信号（s i ）。多个数字音频源信号（sl，sp）。根据本发明，该方法包括：从表示所述特定源信号或包含在混合信号中的信号的值中确定特定源信号或多个信号（si）的振幅模量或归一化功率，然后执行最小方差为了获得每个特定的源信号（s'i），在混合信号的线性约束下进行空间滤波，所述滤波基于混合信号的至少两个通道之间的所述特定源信号的分布以及所述特定源信号的幅度或归一化功率被用作滤波器的线性约束。
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