| 摘要 |
PURPOSE:To obtain both a sound field control effect synchronously with the tempo and rhythm of a music, and well-balanced sound quaility and music space by adjusting a sound field controller according to the auto-correlation function of an acoustic signal, and adjusting low and high-pass componets by the difference of the balance of the low and high-pass of both the acoustic signal and a sound field sensor. CONSTITUTION:An output signal 21 of an acoustic signal reproducing device 1 passes plural hand pass filters 2-1-2-n, and enters auto-correlation function calculating circuits 3-1-3-n. Then, the auto-correlation function is calculated, the calculated value is a correlation coefficient, and converted into a control signal which controls the signal 21 by correlation coefficient converting circuits 4-1-4-n. Then, the control signal controls a sound field controller 6. And also, both an output signal 18 of a sound sensor 8 provided in a reproduced sound field and the signal 21 pass both low-pass filters 9 and 11, and high-pass filters 10 and 12, enter low and high-pass level balance arithmetic circuits 13 and 14. Then, the level balance is calculated, compared by a comparing and arithmetic processing circuit 15, and the difference is corrected by a low and high-pass correcting circuit 16. |
