Semiclassical Approximation of Loudspeaker Positioning in Room
The field radiated by a loudspeaker is sensitive to the loudspeaker placement, especially at low frequencies, because the room exerts an acoustical load on the membrane. The semiclassical theory is used to simulate the load: this variant of ray tracing takes phases into account. It builds up the coherent part of the point transfer function - or acoustical load - for different source positions and the ratios give the compensation filters. Compared to measurements, the same overall shapes are obtained. Discrepancies subsist due to the finite size of the loudspeaker and phase shifts at the reflections on the walls not accounted for at present. So far, the simulation has been developed for rectangular rooms and point sources only.
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $33 for non-members and is temporarily free for AES members.