Abstract: Disclosed is a method for generating a surround-channel audio signal (Mout) from a mono/stereo audio signal (Min, Sin), comprising the steps of: a) generating a first multi-channel signal (M1) by surround panning the mono/stereo audio signal (Sin); b) generating a second multi-channel signal (M2) by effect processing the mono/stereo input signal (Min, Sin) so that the rear signals comprise at least reverberation of the mono/stereo audio signals; and c) mixing the corresponding signals of the first multi-channel signal (M1) and the second multi-channel signal (M2), thereby forming the surround-channel audio signal (Mout).