| 摘要 |
PURPOSE:To make acoustic centers of each speaker coincident with each other by providing a delay circuit to a channel dividing amplifier. CONSTITUTION:An input signal 9 is applied to a band split circuit 6, where the signal is split into a signal 10a to a tweeter 3 and a signal 10b to a woofer 4 by a high pass filter 6a and a low pass filter 6b. The signal 10a is fed to a constant delay type full band passing circuit 7a. The signal 10b is fed to a constant delay type full band passing circuit 7b. The delay circuits 7a, 7b give a required delay for correcting the difference of acoustic centers of the speakers 3, 4. Outputs of the delay circuits 7a, 7b are given to power amplifiers 8a, 8b. |
