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13 Resources StudioLive™ Series III
13.7 Using Output Delay Owner’s Manual
13.7.2 Delay Systems
延迟系统
In most situations, a PA system relies on a main speaker system, positioned at the
front of the room, to reproduce audio for the entire performance space. As a result,
the level of the system is considerably louder at the front of the room then it is at the
mix position.
在大多数情况下，扩声系统依靠位于房间前部的主扬声器系统，为整个表
演空间再现音频。因此，系统在房间前部的音量要比在混音位置的音量大
得多。
In situations where sound must be reproduced outside of the main system’s
optimum range, well-placed delay systems can extend the intelligibility of the
front-of-house system. By creating listening zones throughout the room, your front-
of-house system only needs to be loud enough to cover the front of the room. As a
result, you can lower the mains level, give the front-row listeners’ears a break, and
get better fidelity from your speakers.
必须在主系统的最佳范围之外，重现声音的情况下，精心布置的延迟系统，
可以扩展观众席系统的清晰度。通过在整个房间创建聆听区，观众席系统只需
要有足够的音量来覆盖房间的前面。因此，你可以降低主音量，让前排听众的
耳朵休息一下，并从你的扬声器获得更好的保真度。
When placing delay systems, place delay systems where the main system’s
intelligibility falls apart as it is overcome by environmental obstacles:
放置延迟系统时，由于受到环境障碍的影响，主系统的可理解性就会崩溃：
Inside. Indoors, you are trying to overcome the direct-to-reverberant reflections.
Your goal is to find where the direct signal-to-reverberation ratio has reached
about 50/50. At this point, the reflections in the room are at an equal level to the
direct sound of the P.A., and vocal intelligibility is lost.
在室内，尽可能克服直接反射到混响反射的问题。你的目标是找到直接信
号与混响比例达到约
50/50
的地方。在这一点上，房间里的反射与
P.A.
的直
达声处于同等水平，而人声的可理解性就会丧失。
Outside. Outdoors, you are trying to maintain level as the noise floor of the
crowd begins to be at equal level to the P.A. in the intelligibility range. At
this point, the main system needs more support in order to deliver the same
perceived loudness as you get further from the source.
户外人群的噪音底限，开始与
P.A.
在可理解范围内处于同等水平时，你
要尝试保持水平。在这一点上，主系统需要更多的支持，以提供相同
的感知响度，因为你离源头越来越远。
The goal of distributed sound is for the people in the back row have the same
listening experience as the people in the front, but it isn’t as easy as just
bringing an extra pair of speakers. To create a distributed sound system, you
need to delay the signal going to the additional speakers.
分布式音响的目标，是让后排的人拥有与前排的人一样的听觉体验，但
这并不像多带一对扬声器那么简单。要创建一个分布式音响系统，你需
要延迟信号进入额外的扬声器。
1. Once you have positioned your delay systems, measure the distance from
the left front-of-house speaker to the closest delay speaker (most likely, the left
side delay speaker). Divide the distance by 1.1 (if measured in feet) or 0.34 (if
measured in meters).