NCast Presentation Recorder Reference Manual
A reference signal of 0.0 dBu (0.775 V RMS) on the line-in connector will produce maximum sample values
with the line-in gain set to approximately 21. If this is considered the internal 0.0 dB signal reference, the
chart shows gain adjustments for different values of Line-in Gain.
9.2.5. Audio Output Gain
The audio output gain adjusts the signal level from the audio codec to the line-out connector. This signal
powers the local speakers (after suitable amplification) and delivers the audio media stream to the audience.
For a 0.0 dB reference signal (maximum sample values) the measured output levels in dBu are shown in the
chart.
9.2.6. Audio Loopback Gain
Allows input audio to be looped back to the output connector. The normal use of this loopback is for
confidence checking of the input audio on a control monitor or speaker. If input microphones are able to
pickup this output signal, serious feedback loops (whine) will result. Setting this value to non-zero where
speakers and microphones are in the same space is not recommended.
Audio Gain Charts
Mic Gain
Amplification
0
10
20
30
40
50
60
70
80
90
100
Line-in Gain
Amplification
0
10
20
30
40
50
60
70
80
90
100
Output Gain Output Level
0
10
20
30
40
50
60
70
80
90
100
9.3. A
DVANCED
9.3.1. Advanced Settings - Brightness, Contrast, Saturation, Hue
These values allow fine tuning of image brightness, contrast, saturation, and hue.
NCast Corporation
Revision 2.2
Page 84
