| 摘要 |
PROBLEM TO BE SOLVED: To provide a channel divider capable of appropriately setting a cross-over frequency even when bands in which woofer and tweeter can be reproduced widely overlap with each other, and a voice reproduction system including the same.SOLUTION: In a voice reproduction system, a control circuit of a channel divider independently supplies test signals to woofer and tweeter from a test signal generation circuit, respectively, records measurement signals from microphones corresponding to them as a first measurement signal and a second measurement signal, and calculates a power spectrum function of sound pressure when a predetermined low-pass filter LPF and a predetermined high-pass filter HPF are operated by setting a cross-over frequency fc0 as a variable based on the first measurement signal and the second measurement signal, and a display circuit part displays an optimal cross-over frequency band fcz in which the cross-over frequency fc0 should be selected based on the power spectrum function. |
