Tieline Merlin PLUS User Manual page 32

32 Merlin PLUS User Manual v2.0
instructions.
Intelligent Gain Control (IGC)
The codec's inbuilt DSP limiter automatically takes care of any instantaneous audio peaks that
occur in demanding broadcast situations. Input IGC (Intelligent Gain Control) is enabled by default
and is automatically activated at +20 dBu (G5 audio scale) and +14dBu (G3 audio scale) to prevent
audio clipping.
There are three settings; Auto, Fixed and Off. If Auto is configured the codec will detect when
incoming audio levels have reduced sufficiently and automatically return input levels to the gain
setting prior to IGC being activated. The codec takes just 250 milliseconds to detect audio levels
have returned to normal (after IGC Level has been initiated) and will return the levels to the previous
setting within half a second. This response is linear.
To adjust this setting in the codec:
1. Press the SETTINGS
2. Navigate to Audio and press
Navigate to
3.
4. Select the channel you want to adjust and
5. Navigate to the preferred setting and
button.
.
and press
Input IGC .
press
.
press
.
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