Recently, a new Ambisonic decoding method, the partially matching projection decoding (PMPD) method, was proposed for irregular loudspeaker layouts. This method, however, only works with real-valued Ambisonic signals. This shortage limits the usage of this method with near-field reproduction problems. In this paper, we propose two modifications, the change of criteria to choose loudspeaker when projecting the target and the change of termination condition, to the previous method to make it work the complex-valued near-field compensated Ambisonic signals. Two evaluation experiments are conducted to test the performance of the modified PMPD method with different loudspeaker layouts. The results show that the modified PMPD method is available for reproducing near-field sound sources with both irregular and regular loudspeaker layouts.
Authors: Zhongshu Ge (Peking University), Liang Li (Peking University) and Tianshu Qu (Peking University)