| 摘要 |
PURPOSE:To reproduce sound with excellent quality by forming the stereo reproduction device with 1st and 2nd phase inverters inverteing a phase of an output signal of 3rd and 4th time delay devices, and a 5th speaker arranged to the front left of a listener and a 6th speaker arranged to the right side of the listener to reproduce output signals of the 1st and 2nd phase inverters. CONSTITUTION:A 2nd signal branched by 3-branch means 12, 13 is respectively inputted to time delay devices 14, 15. Signals S3, S4 delayed by a time of several msec - several tens of msec at the time delay devices 14, 15 are power-amplified by amplifiers 20, 23 and reproduced by speakers 5, 6 arranged to the front left and right of a listener M1. On the other hand, a 3rd signal divided into three by a three-branch means is respectively inputted to time delay devices 16, 17. Signals S5, S6 delayed by the time of several msec - several tens of msec at the time delay devices 16, 17 are inputted to phase inverters 18, 19 inverting the phase of the output signals with respect to the input signals. The output signals S7, S8 are power-amplified by amplifiers 21, 24 and reproduced by speakers 3, 8 arranged to the front left and right of the listener M1. |
