Automatic signal projection for multichannel dialogue separation

There is disclosed, inter alia, a system (1) for deriving, from an input multi-channel audio signal (2), a multi-channel target signal (4) in compressed form, the system (1) comprising:a downmix block (10), to downmix the input multi-channel audio signal (2) onto one single-channel downmix signal (12);a single-channel separation block (20), to perform a single-channel separation of the single-channel downmix channel (12), to derive a single-channel target signal (22) from the single-channel audio signal (12),a multi-channel projection coefficients estimation block (40), to derive an array of multi-channel projection coefficients (32) capable of projecting the single-channel target signal (22) onto multiple channels; andan output unit (30) to output the multi-channel target signal (4) in compressed form as the single-channel target signal (22) and the array of multi-channel projection coefficients (32).