Reverberation technique for 3D audio objects

Method of applying a three-dimensional (3D) reverberation to a sound object as perceived from a listening position in a sound room, the listening position corresponding to a microphone position at which 3D spatial room responses (SRR) are measured, the sound object originating from a sound object position, the method comprising:

• receiving a sound object, the sound object comprising an audio signal and associated metadata, the associated metadata comprising the sound object position;
• computing a 3D spatial room response (SRR) corresponding to the sound object position, the computing a SRR corresponding to the sound object position comprising:
• selecting existing SRRs to be interpolated based on the sound object position,
• storing the existing SRRs in a database together with coordinates corresponding to their capture position, and
• interpolating the selected existing SRRs stored in the database, the interpolating existing SRR values comprising performing a bi-triangular or tetrahedral interpolation between existing SRR values;
• performing a time convolution operation between the audio signal of the sound object and the computed SRR value to calculate a reverberated signal.