| 摘要 |
PURPOSE:To obtain the compact system with satisfactory characteristic and no feeling of pressure by reproducing a low frequency at a reproducing device fitted near the ears and executing reproduction from an intermediate frequency to a high frequency by spatial radiation clue to a speaker. CONSTITUTION:Compact headphones 1 and 1 for low sound are fitted to a space surrounded by external auditory miatus ports 12a and conchae in both ears 12, these two headphones 1 and 1 for low sound are respectively connected to a DSP 2 by wires 3, and this DSP 2 and compact speakers 4 and 4 for intermediate and high frequencies are respectively connected by wires 3. Since the radiated sound of the headphone 1 for low sound generates acoustic compliance with the cavity effect of the ear, alive regenerative sounds are synthesized. On the other hand, for intermediate and high sounds, radiated sounds from the compact speakers 4 are directly heard by the ears 12. At such a time, the difference of arrival time to the ears 12 between the low sound and the intermediate/high sounds generated from the system, the difference of right and left levels and the difference of phases, etc., can be freely controlled and corrected by the DSP 2. |
