Dante Audio Switching Boards
161
Enova Digital Media Switchers - Hardware Reference Manual
Testing/Checking Audio Signal Routing
Input Board
– If an embedded audio signal is being replaced on a video output signal, execute a test switch using the
video signal. See the
section on page 70 for details.
Output Board
– If audio is being pulled from a video input or output signal and sent to an auxiliary audio-only destination,
check the auxiliary or supplemental audio equipment involved to be sure the audio signal is present where expected. If
the system does not handle the audio in the expected manner, see "Dante Audio Switching Boards Troubleshooting" on
page 162.
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.
NOTE:
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.
Dante 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 137). They can also be adjusted with digital signal processing
SEND_COMMANDs (see page 231) or DGX_SHELL commands (see page 273). The only types of digital signal processing
that are controlled via the control panel are volume, gain, and mute on embedded digital audio signals only.
Input and Output Digital Signal Processing
NOTE:
Configuration data is not affected by firmware upgrades.
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 path
• 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
Note: 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
Available types of tones:
Off (default), Voice, Music, Movie
Note: The tone adjustment is applied on top of the equalizer adjustments.
Balance
Balance level can be set from -20 to +20, left to right (default value is 0)
Tone Generation
(may be switched to one
or more audio outputs)
Available test tones:
60 Hz, 250 Hz, 400 Hz, 1 kHz, 3 kHz, 5 kHz, 10 kHz, Pink noise, White noise
