Ensemble Designs 5470 Digital Processing Amplifier and Legalizer User Manual
Page 21
The DNR menu shown below sets the following parameters:
•
Mode – set the mode of noise reduction based on the type of noise and the amount
of motion in the signal. Set the Mode to one of the following:
Automatic Lo – this setting is completely automatic and requires no user
adjustments. The adjustments for Noise Reduction (NR) and Threshold
change depending on the source material. Luma and Chroma filters and
Chroma/Luma tie are on. This mode uses the Impulse 1 filter. This setting
removes a moderate amount of noise and shows little motion artifacts. It is
most useful for signals that vary a great deal and require less operator
intervention.
Automatic Hi – this setting is also completely automatic and requires no
user adjustments. The adjustments for enhanced for noise reduction (NR)
and Threshold. Luma and Chroma filters and Chroma/Luma tie are on.
This mode uses the Impulse 2 filter (also temporal). All noise is removed in
this mode and chances are higher for motion artifacts to appear.
Adaptive – this mode requires manual settings of all parameters. With
this mode, fine detail is preserved and motion is removed. Best used for
signals with less motion and results viewed with the Show Noise function
and a waveform monitor.
Adaptive/Impulse 1 – this mode is similar to the Adaptive mode above but
adds an Impulse 1 filter control. This allows removal of impulse noise —
large, narrow amplitude noise with a very high bandwidth (narrow). This
filter requires detail to be very fine before it will be removed. It is best for
removing fine sparkles in the video. Some fine moving details, such as rain,
can soften and blur with this filter enabled and so is not recommended for
this type of scene.
Adaptive/Impulse 2 – this mode is similar to the Adaptive/Impulse 1 mode
above but adds an Impulse 2 filter control. This allows removal of a wider
bandwidth of impulse noise. As a result, scenes with bigger detail will be
affected. This is also an effective filter for removing sparkles but blurring
and softening of detail will be more obvious than the Impulse 1 filter.
Model 5470 Digital Proc Amp and Model 5475 DNR
5470/5475-21