A method for processing an audio signal in accordance with a room impulse response , the method comprising: separately processing the audio signal with an early part of the room impulse response and with a late reverberation of the room impulse response or a synthetic reverberation, wherein the separate processing comprises: processing the audio signal with the early part of the room impulse response during a first process, processing the audio signal with the late reverberation of the room impulse response or with the synthetic reverberation during a second process that is different and separate from the first process, and changing from the first process to the second process at a transition from the early part to the late reverberation in the room impulse response; and combining the audio signal processed with the early part of the room impulse response and the audio signal processed with the late reverberation of the room impulse response or with the synthetic reverberation, wherein the transition from the early part to the late reverberation in the room impulse response is determined as a time when a correlation measure reaches a threshold, wherein the correlation measure describes with regard to the room impulse response a similarity of a decay in acoustic energy comprising 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 at a time of the first reflection in the early part of the room impulse response . separately processing the audio signal with an early part of the room impulse response and with a late reverberation of the room impulse response or a synthetic reverberation, wherein the separate processing comprises: processing the audio signal with the early part of the room impulse response during a first process, processing the audio signal with the late reverberation of the room impulse response or with the synthetic reverberation during a second process that is different and separate from the first process, and changing from the first process to the second process at a transition from the early part to the late reverberation in the room impulse response; and processing the audio signal with the early part of the room impulse response during a first process, processing the audio signal with the late reverberation of the room impulse response or with the synthetic reverberation during a second process that is different and separate from the first process, and changing from the first process to the second process at a transition from the early part to the late reverberation in the room impulse response; and combining the audio signal processed with the early part of the room impulse response and the audio signal processed with the late reverberation of the room impulse response or with the synthetic reverberation, wherein the transition from the early part to the late reverberation in the room impulse response is determined as a time when a correlation measure reaches a threshold, wherein the correlation measure describes with regard to the room impulse response a similarity of a decay in acoustic energy comprising 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 at a time of the first reflection in the early part of the room impulse response . <EOS>