ENERGETIC ANALYSIS OF THE QUADRAPHONIC SYNTHESIS OF SOUND FIELDS FOR SOUND RECORDING AND AURALIZATION ENHANCING

A methodology for fully recovering the acoustic information of the sound field is here presented and its potentiality for enhancing both the sound recording and the auralization processes is remarked. Through the rigorous acoustical interpretation of a commercial quadraphonic coding of audio signals, an advanced intensimetric analysis of coded signals is performed on the basis of the four-vector (sound pressure-particle velocity) description of the sound field. Some case studies where sound pressure and particle velocity signals have been synthesized by convolution with quadraphonic impulse responses are then presented and two energetic indicators (sound radiation and resonance), calculated from the obtained signals, are proposed as statistical parameters for controlling the degree of acoustical fidelity of sound recording and reproduction