Enhanced Constant Power Panning Law for Surround Sound Systems

In this paper, we propose enhanced constant power panning (CPP) law which improves sound localization accuracy for two channel and multi-channel surround speaker layouts. Conventional CPP laws have different sound direction from panning angle, especially when the speakers are spread out widely. To overcome this drawback, we define a target angle and derive it by using directional psychoacoustic criteria (DPC). The analysis results show that the proposed panning law has the same direction as panning angle in audible frequency range. In addition, its performance is verified through the subjective test using real sound source.