22
In this case, the filter's GAIN=0.0dB, and being BW=1.05, the current filter selected is a Bell type.
Now, rotating the PM2 encoder clockwise, the parameter BW will range from 0.05 up to 3 for identifying a
bandwidth value for a Bell filter.
If a Bell filter is selected, then the Gain can be modified from 0.0dB and the BW will range between 0.05
and 3.
If the user wants to select a Shelving filter from the above setting, with the GAIN=0.0dB [if the GAIN is not
0.0dB, it is necessary to set it at 0.0dB using the PM3 encoder], rotate the PM2 Counter-clockwise. Once
BW reaches the 0.05 value, at the next step of the PM2 counter-clockwise rotation, the selection of the
Shelving filters will be entered.
Still rotating the PM2 counter-clockwise, the Shelving filters and their order will be selectable in the
following sequence:
1. 1st order Low Shelving = -6LoSh [on the screen]
2. 2nd order Low Shelving = -12LoSh [on the screen]
3. 1st order High Shelving = -6HiSh [on the screen]
4. 2nd order High Shelving = -12HioSh [on the screen]
Once the desired Shelving filter is selected, the PM3 can then be used to select the desired GAIN and
when the GAIN is set at a value different from 0.0dB, then the filter type cannot be changed until this GAIN
is returned to 0.0dB.
BELL Filter:
As an example, if we want to set a bell filter within EQ-1, then the BW has to be set at a
desired value of say 1.00 using the PM2 encoder, the GAIN at say +3dB using the PM3 encoder and the
center Frequency at say 1.00KHz with the NAV/PM1 encoder.
The EQ sub-menu screen will show the following
Once in the Bell Filter's edit screen, all the filter's parameters can be modified using the “NAV/PM1”, “PM2”
and “PM3” encoders for editing the Filter's Center Frequency, Bandwidth BW and Gain.
The Center Frequency of the Parametric Filter can be edited using the “NAV/PM1” encoder, the BW the
“PM2” encoder and the Gain the “PM3” encoder:
“
Center Frequency
”: the selectable frequencies range is from 20Hz to 20kHz in steps of 1/24 of an Octave
and can be adjusted by rotating the “NAV/PM1” encoder.
“
Bandwidth BW
”: the selectable BW range is from 0.05 Octave to 3 Octave in steps of 0.05 Octave and
can be adjusted by rotating the “PM2” encoder.
“
Gain
”: the selectable Gain range is from -15dB to +15dB in steps of 0.5 dB and can be adjusted by
rotating the “PM3” encoder.
Low Shelving Filter
: As an example
,
if we want to set a low shelving filter within EQ-1 then the PM2
encoder has to be rotated counter-clockwise until the desired Low Shelving filter say -6LoSh appears on
the screen, the GAIN at say +3.0dB using the PM3 encoder and the High Cut Frequency at say 1.00KHz
with the NAV/PM1 encoder.
The EQ sub-menu screen will show the following
Out-1 Name EQ-1
–› 1.00KHz BW=1.00 3.0dB
Out-1 Name EQ-1
–› 1.00kHz -6LoSh + 3.0dB
Содержание DSPOT DS-SP36
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