| 摘要 |
PROBLEM TO BE SOLVED: To realize sound with further sense of presence by means of the cooperation of 3D stereophonic enhancement effect and 3D surrounding effect by connecting three-dimensional(3D) stereophonic enhancement circuits in parallel with plural stage with respect to a two channel input signal and obtaining a multichannel output signal. SOLUTION: 3D stereophonic enhancement circuits are connected in parallel to plural stages with respect to a two channel input signal, and a multichannel output signal is obtained. Namely, a two-channel stereo system is converted into stereo systems made into three-dimensional system, and the 3D system are combined in parallel. Thus, the system is converted into a stereo system made into the 3D 2 channel of four channels, six channels and the like. Thus, a wide area is made into 3D enhancement by giving a feature to a component filter, improving the gain around 1 kHz by about 5db and making the circuit of L-R pass through an input part in making the 3D enhancing system into 3D. |
