| 摘要 |
PURPOSE:To improve the image of an attendance feeling by providing a sensor to detect the direction of a listener's face in a head-phone part, respectively inserting a delay circuit into a right and left voice signal transmission channels and adjusting the phase of a voice signal with the control of the delay circuit. CONSTITUTION:The directional angle of a listener who puts on a head-phone part 10 is detected by an angle sensor 19, converted into an electric signal and inputted into a delaying time control circuit 20. The delaying time control circuit 20 outputs a signal to control the delaying time of delaying circuits 17 and 18 in accordance with an inputted angle signal. The delaying circuits 17 and 18 output an input voice signal with delaying by the delayed time in accordance with the control signal of an inputted delaying time. Consequently, the difference of the delaying time of an L system and an R system turns to be the phase difference of the voice signal and makes a person putting on the head-phone recognize the direction of a new image. |
