Enova DGX Audio Switching Boards
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Hardware Reference Manual – Enova DGX 100 Series Digital Media Switchers
Digital Signal Processing (DSP)
Once the system is installed and all devices are in their final locations, the sound can be fine-tuned for optimum performance. To
properly adjust the sound, signals need to be routed and volume will need to be adjusted throughout the process.
TIP: Before fine-tuning the system for its final location, route a few test switches to verify that the system is working correctly and to
determine what type of digital signal processing adjustments are needed.
Audio Switching Boards allow for digital signal processing (e.g., input gain, volume, equalizer) on every input /output in the
enclosure.
All of the types of supported DSP settings (see the table that follows) can be adjusted using the System Configuration interface
(see page 173). They can also be adjusted with digital signal processing SEND_COMMANDs (see page 202) or DGX_SHELL
commands (see page 243).
NOTE: The only types of digital signal processing that can occur using the control panel are volume, gain, and mute on the embedded
digital audio signals only (see page 225).
Input and Output Digital Signal Processing
Digital Signal Processing Audio Adjustment Parameters
Output Volume -100 dB to 0 dB (attenuation)
Volume Limiter Programmable minimum and maximum volume limits
Mute Mute function on each output channel
• When a muted output is un-muted, the output returns to its previously
un-muted volume
• When a volume command is sent to a muted output, the output remains muted;
when the output is un-muted, the volume returns at the new level
Input Gain -24 dB to +24 dB
• Allows source signals of varying amplitudes to be equalized
• Inputs are set to unity gain at the factory
TIP: Make input gain adjustments before fine tuning the outputs.
EQ Gain -12 dB to +12 dB
Compression (Enable/Disable) Audio inputs (when enabled) can be independently configured for the following
settings:
• Attack from 1 to 2000 milliseconds
• Release from 10 to 5000 milliseconds
• Threshold of -60 dB to +0 dB
• Ratio 1 to 20
Delay 0 to 200 milliseconds (each audio signal independently)
10-Band Parametric Equalizer Selectable center frequency for each band independently
• Used to boost or cut the frequencies for each output
• Each equalization band spans one octave and is identified by its center
frequency
• Bands are set for a flat response (0 dB) at the factory
Preset Filter Types Available preset filter types (apply to each band independently):
• Bell
• Bass shelf
• Treble shelf
• Low pass
• High pass
• Band pass
• Band stop
Band Gain -12 dB to +12 dB
Band Q 0.1 to 20
Tone
NOTE: The tone adjustment is applied on top of the equalizer adjustments.
Available types of tones:
• Off (default)
• Voice
• Music
• Movie
Balance Balance level can be set from -20 to +20, left to right (default value is 0)
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