User`s manual
Page 24
LPF (Low Pass Filter)
The LPF section controls affect lter frequency and slope. The low pass
lter is useful for removing background hiss, wind, and other high
frequency noise.
• Freq - low pass lter frequency
• Q - lter slope (6 to 36 dB/Oct)
Displays
Meters
The NF575 Noise Filter has meters showing input signal output signal
levels. These meters are useful for conmring the amount of unwanted
noise being ltered (removed). These meters also can be used to conrm
relative input and output levels are the same if desired.
Filter Response Plot
The NF575 frequency response plot shows
the total shape of the high pass, notch, and
low pass lters. This plot provides visual
conrmation of the control settings in each
lter section.
General Information
To adjust any of the NF575 controls the user can:
• Hold the <Command> key while dragging the slider for ne control, or
• Click on the text box to highlight and edit the numeric value to get precise
control (if a value outside the valid range is input, the control will default to
the nearest allowed value when enter is hit) and hit <Enter>, or