Ensemble Designs BrightEye 30 handleiding

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Ensemble Designs

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Handleiding

BrightEye 30 Audio ADC and DAC, Bi-directional

The four incoming digital audio signals feed the four channel mixer/shuffler. As

with analog to digital mode, this provides individual adjustment of gain and

channel inversion (to address out of phase inputs). The four output channels are

each formed by summing any combination of inputs. Each output can contain any

of the input channels, allowing, for example, stereo to mono mixdown, left/right

channel swaps, and simultaneous stereo and mono outputs.

Digital to analog conversion is performed with 24 bits of precision at 48kHz with

256x oversampling.

The processed signals are output as balanced analog signals at either -10 dBm or

+4 dBm reference level.

In order to access all of the features of the mixer/shuffler, configuration of

BrightEye 30 must be done using BrightEye PC or Mac and the unit's USB con-

nection. The BrightEye Control application further provides selection between

18 dBFS and -20 dBFS for the digital reference level.

Front panel controls allow simple adjustment of gain in pairs of channels

(1&2, 3&4) and VU and peak signal indication.

The reference input is not used in this mode. All clocks are derived from the

incoming digital signals. The Ref LED will be extinguished.

3. Bi-Directional Conversion

In Bi-Directional mode, BrightEye 30 is simultaneously a two channel digital to

analog converter and a two channel analog to digital converter. The channel 1/2

AES connector is an input (accepting sample rates from 44.1 to 96 kHz), while

the channel 3/4 AES connector is an output. Analog channels 1/2 are outputs, and

analog channels 3/4 are inputs.

The AES input presented to channel 1/2 is sample rate converted to 48kHz, syn-

chronous to the reference if one if provided. The AES output on channel 3/4 will

also be at a 48kHz sample rate and will also be synchronous to the reference

input.

BrightEye-4

AES 1/2

Input

Analog Audio Output

Ch 1/2

AES 3/4

Output

AES

Rcvr

AES

Formatter

Analog Audio Input

Ch 3/4

2 Channel

Mix

Shuffle

Gain

2 Channel

D to A

Audio Clock

Generation

2 Channel

A to D

2 Channel

Mix

Shuffle

Gain

Sample Rate

Converter

AES, Word Clock,

or Video Ref In

BrightEye 30 Bi-Directional Conversion Mode

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