Chapter 6 Audio Configuration
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166
Ellipse 3000 Release 3.0, Rev. B
Coding Scheme Configuration
6.5.1.8
Digital De-Emphasis (MPEG-1 Layer 2)
The Digital De-Emphasis parameter activates digital de-emphasis applied to the MPEG-1 Layer 2
PCM (pulse code modulation) input signal, wherever detected that the input has been de-
emphasized.
The available options are:
■
Auto
– Detection mode is automatic. Detection is performed by monitoring the pre-emphasis
flags within the channel status data of the incoming digital audio signal.
■
On
– Detection mode of operation is enabled. The audio signal is constantly de-emphasized.
■
Off
– Detection mode of operation is disabled.
The MPEG-1 Layer 2 Digital De-Emphasis default is
Auto
.
Front Panel
To set the Digital de-emphasis parameter on the front panel:
❖
Navigate
Root > Configuration > Audio > [Audio Channel] > MPEG-1 Layer 2 Parameters >
Digital de-emphasis
.
Web Manager
To set the MPEG-1 Layer 2 Digital De-Emphasis parameter in the Web Manager:
❖
Select
Audio > Aud#
and access the MPEG-1 layer 2 Parameters menu.
Digital de-emphasis
1-8
1 ƒ Auto
2 ‚ On
3 ‚ Off
