A method for processing in accordance with a room impulse response an audio signal (504, 802) into an output signal, the method comprising: combining a processed audio signal and a scaled reverberated signal to form said output signal, applying the audio signal (504, 802) as an input signal to an early part processor (502, 812) and to a reverberator (514, 816a, 816b); processing, by the early part processor (502, 812), the audio signal (504, 802) with an early part (301, 302) of the room impulse response to obtain the processed audio signal, processing, by the reverberator (514, 816a, 816b), the audio signal (504, 802) with a late reverberation of the room impulse response to obtain a reverberated signal, and scaling the reverberated signal to obtain the scaled reverberated signal, the scaling being dependent on the audio signal (504, 802), wherein scaling the reverberated signal comprises applying to the reverberated signal a gain factor, wherein the gain factor is determined as follows: g = c u + ρ ⋅ c c − c u where ρ = predefined or calculated correlation measure for the audio signal (504, 802), c u, c c = factors indicative of a condition of the plurality of input channels of the audio signal (504, 802), with c u referring to totally uncorrelated channels, and c c relating to totally correlated channels, wherein c u and c c are determined as follows: c u = 10 10 ⋅ log 10 K in 20 = K in c c = 10 20 ⋅ log 10 K in 20 = K in where K in = number of active input channels of the audio signal. combining a processed audio signal and a scaled reverberated signal to form said output signal, applying the audio signal (504, 802) as an input signal to an early part processor (502, 812) and to a reverberator (514, 816a, 816b); processing, by the early part processor (502, 812), the audio signal (504, 802) with an early part (301, 302) of the room impulse response to obtain the processed audio signal, processing, by the reverberator (514, 816a, 816b), the audio signal (504, 802) with a late reverberation of the room impulse response to obtain a reverberated signal, and scaling the reverberated signal to obtain the scaled reverberated signal, the scaling being dependent on the audio signal (504, 802), wherein scaling the reverberated signal comprises applying to the reverberated signal a gain factor, wherein the gain factor is determined as follows: g = c u + ρ ⋅ c c − c u where ρ = predefined or calculated correlation measure for the audio signal (504, 802), c u, c c = factors indicative of a condition of the plurality of input channels of the audio signal (504, 802), with c u referring to totally uncorrelated channels, and c c relating to totally correlated channels, ρ = predefined or calculated correlation measure for the audio signal (504, 802), c u, c c = factors indicative of a condition of the plurality of input channels of the audio signal (504, 802), with c u referring to totally uncorrelated channels, and c c relating to totally correlated channels, wherein c u and c c are determined as follows: c u = 10 10 ⋅ log 10 K in 20 = K in c c = 10 20 ⋅ log 10 K in 20 = K in where K in = number of active input channels of the audio signal. K in = number of active input channels of the audio signal.