A system for processing audio signals, comprising: a source separation block configured to estimate, from an input signal evolving in time along a discrete succession of time instants or time slots (401, 403), a target signal and at least one residual signal to be subsequently remixed according to at least one remixing gain variable along the discrete succession; a control block configured to determine, for a determined current time instant or time slot, a first, relative metrics on the target signal (114, 1141), in the determined current time instant or time slot, wherein the first, relative metrics compares a level of the target signal (114, 1141) with a level of the at least one residual signal (112, 1121) or the input signal (102, 1121), in the determined current time instant or time slot; and a temporal context block configured to determine temporal context information (132, 370, 372) based on a second, relative metrics in at least one future and/or past time instant or time slot (403, 425, 407, 417, 406, 416), the second, relative metrics comparing a level of the target signal with a level of the input signal (102, 1121) or the at least one residual signal (112, 1121), in the at least one future and/or past time instant or time slot, the at least one future time instant or time slot (403, 406, 416) being, in the discrete succession, after the determined current time instant or time slot, and the past time instant or time slot (407, 417, 425) being, in the discrete succession, before the determined current time instant or time slot, wherein the control block is configured to generate at least one remixing gain associated to the determined current time instant or time slot based on: the first, relative metrics in the determined current time instant or time slot; and the temporal context information (132, 370, 372). a source separation block configured to estimate, from an input signal evolving in time along a discrete succession of time instants or time slots (401, 403), a target signal and at least one residual signal to be subsequently remixed according to at least one remixing gain variable along the discrete succession; a control block configured to determine, for a determined current time instant or time slot, a first, relative metrics on the target signal (114, 1141), in the determined current time instant or time slot, wherein the first, relative metrics compares a level of the target signal (114, 1141) with a level of the at least one residual signal (112, 1121) or the input signal (102, 1121), in the determined current time instant or time slot; and a temporal context block configured to determine temporal context information (132, 370, 372) based on a second, relative metrics in at least one future and/or past time instant or time slot (403, 425, 407, 417, 406, 416), the second, relative metrics comparing a level of the target signal with a level of the input signal (102, 1121) or the at least one residual signal (112, 1121), in the at least one future and/or past time instant or time slot, the at least one future time instant or time slot (403, 406, 416) being, in the discrete succession, after the determined current time instant or time slot, and the past time instant or time slot (407, 417, 425) being, in the discrete succession, before the determined current time instant or time slot, wherein the control block is configured to generate at least one remixing gain associated to the determined current time instant or time slot based on: the first, relative metrics in the determined current time instant or time slot; and the temporal context information (132, 370, 372). the first, relative metrics in the determined current time instant or time slot; and the temporal context information (132, 370, 372).