| 摘要 |
PURPOSE:To obtain the system adjustment device adjusting easily and quickly a reproduced sound pressure level of a speaker in the acoustic reproduction system in which plural speakers are arranged. CONSTITUTION:A band noise having pink noise for different bands is inputted to an input terminal of a multi-channel sound reproduction equipment and a microphone 7 placed at a listening position collects the reproduced sound. The collected signal is divided by band pass filters 9 having different bands and adjustment attenuators 5 are controlled so that levels of the divided and amplified signals are equal to each other. |
