Thompson ViBE EM4000, User Manual

Page: 106 / 350

Chapter 4 ’Web Browser Interface’ — Settings
94 ViBE EM4000 — Release 1.10
User Manual — 46073586AB02
Click the Misc tab to display other audio component parameters.
LFE Channel Filter This parameter, enabled in 5.0 or 5.1 mode, is used to
enable (
On ) or disable ( Off ) a 120 Hz filter. The filter is
applied to the LFE channel input of a Dolby
®
Digital
encoder prior to encoding. It is ignored if the LFE
channel is disabled. The filter removes frequencies
above 120 Hz that would cause aliasing when decoded.
This filter should only be switched off if the audio to be
encoded is known not to have any signals above 120 Hz
.
Default value: On . This value will not be acknowledged
if the Mode parameter is set to 1/0 (Mono left) , 1/0
(Mono Right) , 2/0 (Stereo) .
Surround 3 dB Attenuation This parameter, enabled in 5.0 or 5.1 mode, is used to
enable (
On ) or disable ( Off ) a 3 dB attenuation before
encoding the Surround channel(s). Default value: Off .
Surround Phase Shift This parameter, enabled in 5.0 or 5.1 mode, is used to
enable (
On ) or disable ( Off ) application of a 90-degree
phase shift to the Surround channels. The Dolby
®
Digital decoder can therefore easily create an Lt/Rt
downmix. Default value:
On .
Surround EX mode This parameter, enabled in 5.0 or 5.1 mode, is used to
indicate that a project was mixed in the Surround EX™
format with a matrix-encoded surround signal
embedded within the two surround channels. Choice
between:
Not Surround Ex , Dolby Surround Ex , Small Room .
Default value: Not Surround Ex
A/D Converter Type This parameter enables audio that has passed through
a particular A/D conversion stage to be marked as such,
so that a decoder may apply the complementary D/A
process. Choice between:
Standard or HDCD . Default
value: Standard .