Filter Block - Extron electronics DMP 64 User Manual

Gain Control
The gain control provides a single long-throw fader with a range of
-18 dB to +80 dB, adjustable in 1 dB increments with the fader or
in 0.1 dB increments using direct entry in the level setting readout
below the fader. The peak reading meter holds the peak level for
one second, displaying it numerically in the box below the meter. The
default setting is unity gain (0.0 dB).
The checkbox, accessible in the dialog box, toggles
Phantom Power
the +48 VDC phantom power on and off. Phantom power is typically
used to power a condenser microphone.
The button, accessible in the dialog box, silences the mic/line
Mute
input.
The button, accessible in the dialog box, allow the polarity of
Polarity
the wires connected to the audio connectors (+/tip and -/ring) to be
flipped to correct for miswired connectors.
Also see Mic/Line (Input) Gain.

Filter Block

The filter processor block, when first inserted, provides one of four
filter selections. Click the desired filter to select it. See
additional information.
NOTE: Selecting "Bass & Treble Filters" inserts two separate filters.
•
Once inserted, double-click the processor block to change parameters of the filter.
•
After the first filter is added, up to four additional filters may also be added to the filter
block using the dialog box. Select the desired filter in a new row using the drop-down
boxes.
The following filters are available:
• High pass filter — A high pass filter passes a band of frequencies
extending from a specified cutoff frequency (greater than zero) up
toward the high end of the frequency spectrum. All frequencies
above the specified cutoff frequency are allowed to pass, while all
frequencies below are attenuated.
The default cutoff is 100 Hz.
• Low pass filter — A low pass filter passes a band of frequencies
extending from a specified cutoff frequency (less than infinite)
towards the lower end of the frequency spectrum. All frequencies below the specified
frequency are allowed to pass, while all frequencies above are attenuated.
The default cutoff is 10 kHz.
• Bass and treble filters — Also known as shelving or tone controls, the separate
bass and treble filters provide the ability to cut or boost gain linearly above or below a
specific frequency, with the end-band shape giving the visual appearance of a shelf. The
bass default frequency is 100 Hz and the treble default is 8 kHz.
• Parametric equalizer filter — The parametric filter is a frequency equalizer that
offers control of all parameters, including amplitude (the amount of gain/boost or gain
reduction/cut applied), center frequency (frequency), and range of affected frequencies
(Q) around the center frequency. This allows the user to control the amplitude, shift the
center frequency, and determine the range of frequencies of each band.
Filter
for
DMP 64 • Software Control 94