A method for processing an audio signal (400, 802) in accordance with a room impulse response (300, 804), the method comprising: separately processing (402, 404, 406, 422, 424, 812, 816a, 816b) the audio signal (400, 802) with an early part (301, 302) of the room impulse response (300, 804) and with a late reverberation of the room impulse response (300, 804) or a synthetic reverberation, wherein processing the audio signal with the early part of the room impulse response comprises a convolution of the audio signal with a direct sound and early reflections of the room impulse response; and combining (418, 432, 828) the audio signal processed with the early part (414, 428, 814) of the room impulse response (300, 804) and the audio signal (416, 430, 826a, 826b) processed with the late reverberation of the room impulse response (300, 804) or with the synthetic reverberation, determining a transition from the early part (301, 302) to the late reverberation in the room impulse response (300, 804) as a time when a correlation measure reaches a threshold, wherein the correlation measure describes with regard to the room impulse response (300, 804) a similarity of a decay in acoustic energy including an initial state and of the decay in acoustic energy starting at a point in time, said point in time following the initial state over a predefined frequency range, wherein the threshold is set dependent on the correlation measure for said point in time, said point in time being a time of a selected one of the early reflections (302, 602) in the early part (301, 302) of the room impulse response (300, 804), and wherein the selected one of the early reflections is the first reflection. separately processing (402, 404, 406, 422, 424, 812, 816a, 816b) the audio signal (400, 802) with an early part (301, 302) of the room impulse response (300, 804) and with a late reverberation of the room impulse response (300, 804) or a synthetic reverberation, wherein processing the audio signal with the early part of the room impulse response comprises a convolution of the audio signal with a direct sound and early reflections of the room impulse response; and combining (418, 432, 828) the audio signal processed with the early part (414, 428, 814) of the room impulse response (300, 804) and the audio signal (416, 430, 826a, 826b) processed with the late reverberation of the room impulse response (300, 804) or with the synthetic reverberation, determining a transition from the early part (301, 302) to the late reverberation in the room impulse response (300, 804) as a time when a correlation measure reaches a threshold, wherein the correlation measure describes with regard to the room impulse response (300, 804) a similarity of a decay in acoustic energy including an initial state and of the decay in acoustic energy starting at a point in time, said point in time following the initial state over a predefined frequency range, wherein the threshold is set dependent on the correlation measure for said point in time, said point in time being a time of a selected one of the early reflections (302, 602) in the early part (301, 302) of the room impulse response (300, 804), and wherein the selected one of the early reflections is the first reflection.