Compressors/Limiters - Behringer Autocom Pro MDX1400 User Manual

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User manual (29 pages)

Table Of Contents

Table of Contents

It is therefore useful to keep the operating level as high as possible without risking signal distortion in order to

achieve optimum transmission quality.

It is possible to further improve the transmission quality by constantly monitoring the program material with the

aid of a volume fader, which manually levels the material. During low passages the gain is increased, during

loud passages the gain is reduced. Of course it is fairly obvious that this kind of manual control is rather

restrictive; it is difficult to detect signal peaks and it is almost impossible to level them out. Manual control is

simply not fast enough to be satisfactory.

The need therefore arises for a fast acting automatic gain control system which will constantly monitor the

signals and which will always adjust the gain to maximize the signal-to-noise ratio without incurring signal

distortion. This device is called a compressor or limiter. This system is a part of the BEHRINGER AUTOCOM PRO.

6.3

By measuring the dynamic range of musical instruments in live recording situations, you will find that extreme

amplitudes occur which often lead to overload in subsequent signal processing equipment. Especially in

broadcasting and record cutting techniques, these signal peaks can lead to heavy distortion. To avoid this kind

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P/dB

140

120

100

Fig. 6.1: The dynamic range capabilities of various devices

P/dB

+20

-20

-40

-60

-80

Fig. 6.2: The interactive relationship between the operating level and the headroom