Cobalt-digital FUSION 3G 9901-UDX 3G_HD_SD Up Down_Cross Converte User Manual download pdf (Page 25)

9901-UDX-OM (V1.15) 9901-UDX PRODUCT MANUAL 1-21

Introduction 9901-UDX Functional Description

The examples in Figure 1-8 show the automatic enable/disable upmixing

function applied to example selected channels

Bus Ch 1 thru Bus Ch 6. As

shown and described, the processing is contingent upon the signal levels of

the channels selected to carry the new 5.1 upmix relative to the selected

threshold (in this example, -60 dBFS).

Figure 1-8 Upmixing Auto Enable/Bypass with Example Sources

Loudness Processor. (See Figure 1-9.) The loudness

processor (option

+LP) function receives up to six selected channels from the

internal bus and performs loudness processing on the selected channels. A

loudness processing profile best suited for the program material can be

selected from several loudness processing presets. Refer to catalog or

Fusion3G

manual supplement OPT-SW-F3GLP-MS for more information.

Note: Discussion and example here describes 5.1-channel loudness processor.

Stereo and dual-stereo processors operate similar to described here.

Bus Ch 1 – Ch 16

From

Internal

Bus

Bus Ch 1

Bus Ch 2

Bus Ch 3

Bus Ch 4

Bus Ch 5

Bus Ch 6

(C)

(LFE)

(Ls)

(Rs)

With all detected signal levels on

Bus Ch 3, 5 and 6 below

threshold, upmixer is active and

generates new 5.1 content.

Threshold

Detect

5.1 Upmix

Bus Ch 1 – Ch 16

Bus Ch 1

Bus Ch 2

Bus Ch 3

Bus Ch 4

Bus Ch 5

Bus Ch 6

(C)

(LFE)

(Ls)

(Rs)

Threshold

Detect

Because the selected

channels are already carrying

viable content, upmixing is

bypassed, allowing the six

original Bus Ch 1 – Ch 6 to

pass through upmix outputs

Upmix L thru Upmix Rs

unmodified.

With any detected signal levels

on Bus Ch 3, 5 or 6 above

threshold, upmixer is bypassed.

- 20 dBFS

- 60 dBFS

Above Threshold

(Bypass)

- 20 dBFS

- 60 dBFS

Below Threshold

(Overwrite)

From

Internal

Bus

Upmix L

Upmix R

Upmix C

LFE

Upmix Ls

Upmix Rs

Upmix outputs

consist of new

upmix content

1 2 ... 20 21 22 23 24 25 26 27 28 29 30 ... 127 128

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