Behringer T1952 User Manual Page 18

  • Download
  • Add to my manuals
  • Print
  • Page
    / 37
  • Table of contents
  • BOOKMARKS
  • Rated. / 5. Based on customer reviews
Page view 17
18
Output
Input
Peak Limiting
Program Limiting
Release
Threshold
t/ms
Level
20 ms
10 20 30
5 ms
approx. 1 s
Fig. 5.3: IGC characteristic of the Limiter section
The diagram illustrates the functioning of the IGC Limiter. The solid graph represents the output signal, while
the dashed graph above shows the input signal response. The areas between the graphs represent the amount
of gain reduction (bright areas are clipping areas, i.e. signal peaks are radically cut off, dark areas show the
effect of the program limiter). The Limiter is activated when the adjusted threshold is exceeded for more than 20
ms, so as to limit audible clipping to a very short moment. About 1 s after the signals has dropped below the
threshold again, the reduction is set to 0dB, so that input and output signals are identical again (unity gain).
Basic settings Peak Limiter section
This is a good starting point for the Peak Limiter. The settings for the Compressor can remain unaltered.
Control element Setting
IN/OUT switch IN
SC MON switch OFF
LIMITER control OFF
Tab. 2.3: Basic settings Peak Limiter section
With LIMITER control you can guard subsequent electronics against overload. The LIM LED shows when the
Limiter is active. When this LED lights up often, reduce the OUTPUT level in the Compressor section.
If this results in an unwanted reduction of the sound pressure level it is also possible to increase the compres-
sion. You can do this by either lowering the threshold or increasing the compression ratio. After that you can
set the desired loudness with the OUTPUT control.
2.5 The Sidechain function
The BEHRINGER TUBECOMPOSER offers an exceptionally usable external facility by using the sidechain
function. By activating the SC EXT switch, the TUBECOMPOSERs control path is disconnected from the
audio input and therefore interrupted. The audio input is routed to the SC SEND output and the SC RETURN
input now receives the new control signal which is derived from an inserted effects processor.
Please note the correct wiring for mains powered units in order to avoid ground loops, as the sidechain inputs
and outputs are unbalanced. The working level of external units must be at line level (-20 to +10dBu) and must
be at unity gain.
It is very common to make the response threshold of a compressor frequency-dependent, where a graphic or
parametric equalizer is connected to the sidechain path. To retain the threshold setting of the TUBECOMPOSER,
unwanted frequencies should be reduced by an equalizer and the desired frequencies should be kept at the
same level. Should for example, the compressor be controlled by a narrow mid-frequency band, it is advisable
to lower the bass and treble controls. The middle frequency control remains at unity gain.
2. OPERATION
Page view 17
1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 36 37

Comments to this Manuals

No comments