Patent ID: 7664270
Filing Date: 2010-02-16
Classification: H04R,H04S

Abstract:
1. A system for processing three-dimensional audio signals by using a rigid sphere, comprising: a three-dimensional audio signal acquiring means for acquiring three-dimensional audio signals by using a predetermined number of mikes set up on the rigid sphere, the three-dimensional audio signals being five-channel audio signals; and a three-dimensional audio signal post-processing means for converting the acquired three-dimensional audio signals to reproduce in diverse reproduction environments including five-channel, four-channel, headphone, stereo, and stereo dipole reproduction environments, wherein the three-dimensional audio signal post-processing means includes a 5×5 inverse filter to reproduce in the five-channel reproduction environment, a 4×4 inverse filter to reproduce in the four-channel reproduction environment, a 5×2 filter to reproduce in the headphone reproduction environment, and a 2×2 inverse filter to reproduce in the stereo and/or the stereo dipole reproduction environment; the mikes include a front mike for increasing the frontal sound image and two right side mikes and two left side mikes, the right side mikes being on the right side of the rigid sphere and the left side mikes being on the left side of the rigid sphere to compensate head movement of a human.