Roland VR-120HD Direct Streaming AV Mixer - Manual (Page 53)

53
Audio Operations
Removing Noise from the Audio (Adaptive Noise Reduction / Low Frequency Cut )
You can remove noise from the input audio. Two effects are provided: “adaptive noise reduction” and “low frequency cut.
Á Adaptive Noise Reduction
By continuously monitoring the input audio to detect noise during periods of silence, this removes only the noise component. Unlike
conventional noise reduction that removes sound of a specified frequency, this analyzes the frequency of the noise and removes it as
appropriate for the environment, resulting in a more natural sound.
* The presence or absence of voice in the input signal is determined according to the “Talking Detector” settings.
Á Low Frequency Cut
This divides the region below 200 Hz into four bands, and cuts unneeded low-frequency regions while continuously analyzing each band.
Unlike conventional low cut, this does not weaken the sound of the low-frequency region.
Adaptive Noise Reduction
1 . Press the AUDIO EFFECT [SETUP] button to turn on (lit).
The Audio Effect Assign setup screen appears.
2 . Press the AUDIO EFFECT [ADAPTIVE NR] button to turn on
(lit).
Adaptive noise reduction function turns on.
3 . Touch Audio Effect 3 <Setup>.
The adaptive noise reduction setup screen appears.
4 . Touch <Auto Learn> to set it to “Enable”.
The noise is automatically detected, and the noise is reduced.
* If you want to detect noise manually, touch Manual Measure <Exec>.
When you touch Manual Measure <Exec>, measurement occurs
automatically. When measurement finishes, the message “Completed”
appears.
5 . Touch <Depth> to set the depth (how aggressive the noise
reduction is).
6 . If the ambient noise level is high, touch <Talking Detector>
to adjust the sensitivity.
* Increasing the value raises the sensitivity of the talking detector,
making detection easier even in noisy environments.
7 . If you want to reset the noise-reduced result to its original
state, touch <Forget Learning>.
* For details on the menu, refer to “9: Audio Output” (p. 128).
MEMO
Using <Forget Learning> to reset the set values
Setting values for both the adaptive noise reduction and the
loudness auto gain control are reset.
Low Frequency Cut
Configure the Low Frequency Cut on the same page of the setup screen
for Adaptive Noise Reduction.
1 . Touch <Lo Frequency Cut> to turn it “ON”.
Low frequency cut turns on.