Miranda UAP-1783 Operations Instructions download pdf (Page 16)

GUIDE TO INSTALLATION AND OPERATION

12 | UAP-1783

3.3.1 Audio Processing

3.3.1.1 Audio Processing - CH 1-4 to CH 13-16 tabs

The channels 1 to 4 are the analog inputs, channels

5 to 8 are the digital inputs. When a video card is

present, 8 extracted audio channels are available

as Channel 9 to Channel 16, see ABUS Input

Section (page 24).

Each of these tabs controls the input processing:

Levels, Fixed Delays and configuration for the

absence signal detection for two pairs of channels;

each channel is provided with a set of controls.

Levels sub-tab: grouped by pair of channels, each

channel has the following controls: a Level slider

(from -96 to 12 dB), an input box where the desired

level may be input directly, a Mute icon button and a

Phase Invert checkbox.

At the bottom are three checkboxes:

• Swap – allows channel swapping inside a

pair.

• Lock – locks both channel sliders together for

levels and delay, so that moving one slider

moves the other one as well.

• Test – replaces the input signal with a stereo

test tone.

Fixed Delay sub-tab: adds an audio delay to the

signal. For each channel, two sliders allow delay to

be adjusted.

• Coarse – adjusts the delay in ms, from -100

ms to 2400 ms

• Fine – adjusts the delay in sample

increments, from -47 to 47.

Input data boxes are available to enter numerical

values directly.

The displayed value gives the delay between a card

input and a digital output.

• The negative values will be applied only when

the UAP-1783 is slave of a video card via

ABUS.

• The positive small values desired have to be

larger than the minimum processing delay to

be effective.

For the digital inputs, if only one channel is non-

PCM, the input sample rate converter is bypassed

for both channels together, the audio channel will

pass with its original sample rate, and possibly not

synchronized to the reference.

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Miranda UAP-1783 Operations Instructions Page 16

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