Cobalt-digital COMPASS 9305 Embedded Audio Delay Processor Manual do Utilizador descarregar pdf (Página 13)

9305-OM (V4.1) 9305 PRODUCT MANUAL 1-9

Introduction 9305 Functional Description

• If a signal level below a selected threshold on all four of the selected

channels designated as

C, LFE, Ls, and Rs is present, this indicates

that these channels are not carrying 5.1. In this case, the upmixer

overwrites all six selected channels with the new 5.1 content.

• If a signal level above a selected threshold on any of the four selected

channels designated as

C, LFE, Ls, and Rs, this indicates that the

channel(s) are already carrying viable 5.1 content. In this case,

upmixing is bypassed, allowing the original channels to pass

unaffected.

The examples in Figure 1-4 show the automatic enable/disable up-mixing

function applied to example selected channels

Emb Ch 1 thru Emb 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). Note also that this function is applied

after the Audio Delay and Audio Routing/Gain Control functions.

Figure 1-3 Up Mix Auto Enable/Bypass with Example Sources

Emb Ch 1 – Ch 16

From Audio Routing/Gain Control

Emb Ch 1

Emb Ch 2

Emb Ch 3

Emb Ch 4

Emb Ch 5

Emb Ch 6

(C)

(LFE)

(Ls)

(Rs)

L – Emb Ch 1

R – Emb Ch 2

C – Emb Ch 3

LFE – Emb Ch 4

Ls – Emb Ch 5

Rs – Emb Ch 6

To Audio Embed

With all detected signal levels on

EmbCh3– Ch 6 below

threshold, upmixer is active and

overwrites with new 5.1.

Threshold

Detect

5.1 Up Mix

Selected channels Emb Ch 1 – Ch 6

are overwritten with the new 5.1

upmix content.

Emb Ch 1 – Ch 16

From Audio Routing/Gain Control

Emb Ch 1

Emb Ch 2

Emb Ch 3

Emb Ch 4

Emb Ch 5

Emb Ch 6

(C)

(LFE)

(Ls)

(Rs)

To Audio

Embed

Threshold

Detect

5.1 Up Mix

Because the selected channels are

already carrying viable content,

upmixing is bypassed, allowing the

six original Emb Ch 1 – Ch 6 to pass

unaffected.

With any detected signal levels

on Emb Ch 3 – Ch 6 above

threshold, upmixer is bypassed.

Note: In either case shown here,

the unselected channels

(in this example, Emb Ch

7 thru Ch 16) are not

involved in this process

and always pass

unaffected.

- 20 dBFS

- 60 dBFS

Above Threshold

(Bypass)

- 20 dBFS

- 60 dBFS

Below Threshold

(Overwrite)

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