| 摘要 |
PURPOSE:To given the oscillation matched to a sound pressure level at the time of hearing with ears to a human body by equipping with an envelope composition extracting circuit to extract the envelope component of a music signal, an oscillation circuit to output the oscillation signal of a prescribed frequency and a modulating circuit to amplitude-modulate an oscillation signal with an envelope component and to obtain a driving signal for oscillating an oscillator. CONSTITUTION:When an oscillation is given to a human body while music is heard, an oscillator is late oscillated for the change of the sound pressure level of a music signal and the oscillation, which is felt to the human body, does not match with the music. Therefore, a direct current component is removed by a bias circuit 3, and the generation of such a problem is prevented. Namely, the envelope component of the music signal obtained through an envelope component extracting circuit 7 is inputted to a modulating circuit 5, the oscillating signal of a prescribed frequency, which is the output of an oscillating circuit 4, is amplitude- modulated and the output of the modulating circuit 5 is given to the oscillator stuck to the human body. At this time, after a level difference is expanded by an amplifying circuit 2, the direct current component is removed by a bias adjusting circuit 3, and therefore, the oscillation felt at the human body becomes approximately zero, and only the oscillation of the sound pressure level to emphasize the intensity can be felt by the human body. |
