One, systematic introduction
This bar area is very large, cent is enlarge sound system 3 parts, the first part is the dance pool area that is located in DJ stage ahead, use England in all sound box of Cheng Zhonggao frequency mixes the long shot in the 3 scale down of some brand 4 times bass of pair of type of 18 inches of bugle 5, high frequency sound box uses hoisting in, bass sound box is paratactic place Yu Wuchi ahead. The 2nd part comes loose for the hall the enlarge sound of an area, in all 8 groups, every groups are used with the brand sound box of Cheng Zhonggao frequency mixes long shot of 3 scale down only sound box of 21 inches of ultralow frequency reachs sound box of pair of 18 inches of low frequency only. The 3rd part is 2 enlarge sound system, use with the brand double sound box of complete frequency of 15 inches of 3 scale down and double sound box of 18 inches of low frequency, 2 in all 3 edges, every edge uses 2 groups of complete frequency and bass combination. Result put a part to use height and BSS series result to put entirely, use processor of 4 numbers frequency in all, among them sound box of complete frequency of 15 inches of when a XTA DP226 handles 2 3 scale down, periphery of processing of a XTA448 comes loose the sound box of an enlarge sound, a XTA DP226 handles the sound box of 3 scale down before DJ stage, an ASHLY4.24 is handled all double 18 inches of bass.
2, initial feeling
Sound left to listen before adjusting, feel integral sound is feral, bass position is higher, integral sound slants hard, the sense that makes wind is strong, in high frequency sense is not quite clear, sound blending, administrative levels feels bad, whole feels not quite comfortable. The sound of 3 area is not synchronous, after field feeling sound has " run code " phenomenon.
3, adjust measure
1, first partition is adjusted, adjust the enlarge sound system before DJ stage above all: Have phasic delay time above all with SIA software corrective, in placing test mike Yu Wuchi, measure above all exceed bass to transmit time and phasic, the low frequency in checking respectively next, medium high frequency mix with high frequency transmission time phasic, the record comes down, the transmission time that discovers a few passageways is wrong, what have individual channel at the same time is phasic incorrect also, this is medium high frequency unsharpness main reason. After the test is over, use processor to will adjust the transmission time of 4 frequency passageway to agree. Open sound to try afresh next listen, discover each frequency paragraph sound expression compares clarity, but bass position still on the high side, sound slants hard. Dot of examination bass scale down is 150 hertz, this scale down the dot is adjusted for 99 hertz, at the same time in the dot of floor level scale down of low frequency also is adjusted by 150 hertz for 99 hertz. Reopen sound tries listen, position of sensory low frequency drops from wind alvine, but when be being pressed aloud, still a bit slant to feel forcedly, do balanced processing to bass then, 125 hertz attenuation 8 decibel, rehear, feel strength is appropriate, nevertheless, part of low frequency floor level has cloudy feeling, undertake rising to low frequency floor level with processor, scale down dot raises 45 hertz, undertake comparative big attenuation to 35 hertz at the same time, bass becomes cleaner, but the flexibility that feels low frequency right now and gas flu are abate, have the promotion of 4 decibel to 55 hertz then, right now stretch strength compares low frequency appropriate, but discover again when be being pressed aloud, low frequency still has a bit " buzz " sound, undertake the attenuation of 3 decibel to 80 hertz then, right now rehear, feel low frequency sound is clean, transient state is very good, take the sort of stretch move of rubber ball from time to tome together, bass effect is main mix up.
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