| 摘要 |
PROBLEM TO BE SOLVED: To reproduce an original acoustic field in a playback acoustic field regardless of a sound source position in the original acoustic field.SOLUTION: An acoustic system comprises a playback processor 201, an amplifier 202, and speakers 204 and 205 which are installed within a playback acoustic field 203 while changing the distance from a listener 208. Signals inputted to microphones installed in positions corresponding to the speakers 204 and 205 in an original acoustic field are played back from the speakers 204 and 205. The playback processor 201 estimates a sound source position in the original acoustic field from the signals inputted to the microphones installed within the original acoustic field, and changes signal levels outputted from the speakers 204 and 205 in accordance with the estimated sound source position. |
