Clear-Com Eclipse-Omega - Manual (Page 337)

Clear-Com
Eclipse Configuration Software Instruction Manual 8 - 9
Limiter
This sets the maximum audio level on the input that will be passed to
further stages of the audio mixer. The limiter settings are:
• Off
• -6dB
• -8db
Threshold
The threshold setting determines the level at which audio compression
starts. When the audio input level passes the threshold it begins to be
compressed so that the output level from the compressor approaches
the audio limit more slowly as the audio input level rises. The
threshold settings are:
• Off
• -10dB
• -20dB
Compressor
The audio compressor reduces the audio level by compressing it
whenever the audio level exceeds the threshold. Thishas the effect of
allowing the audio level to rise but reducing it by a fixed ratio. The
compressor settings are:
• Off
• Compression 5:1
• Compression 3:1
For example, if the compressor is set to 5:1 with a threshold of -10dB
this will have the effect that for every 5dB increase in the input level
above the threshold of -10dB the compressor will output only 1dB of
increase. Thus if the input audio is 20dB above the threshold the
output from the compressor will only show an increase of 4dB. If the
limiter was set to +6dB then a 20dB increase would normally exceed
the limiter (-10dB + 20dB = 10dB) so the audio level would be cut off at
+6dB. With the compressor the audio level would not reach the limit so
the audio would still rise to mimic the input (-10dB + 4dB = -6dB).