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D S P p r e s e t s
DSP presets for multichannel material
Multichannel audio signals can come from either encoded data streams (such as Dolby Digital) or as discrete channels from a DVD player. If you are using Meridian SmartLink then all formats will reach the G68 as discrete channels. With suitable loudspeakers the G68 can upsample these to provide a more enjoyable surround experience.
The G68 Digital Surround Controller will automatically select the right decoder algorithm and present the same set of preset choices for all streams. Note: Some presets are only available if there are four surround speakers in the system.
There are four multichannel Music presets:
•Discrete, PLIIx Mus6, THX Music, and Ambisonics B format (discrete inputs only).
Discrete and Cinema DSP preset parameters
There are five multichannel Movie presets:
•Cinema, PLIIx Mov6, THX, THX Surround EX, and THX Ultra2 Cinema.
The multichannel Music presets all use the Music speaker layout and the multichannel Movie presets all use the 5.1 Movie speaker layout; see Speaker layouts, page 43.
Cinema
The Cinema preset is recommended for listening to multichannel movie soundtracks when no further processing is required.
Discrete
The Discrete preset is similar to Cinema, except that it uses the Music speaker layout and sets the LFE level to
Parameter | Options |
2+2+2* | Off, 5.1, Side, 7.1 |
Surround† | Surr. Rear, Surr. Side, Surr. All |
R Filter | Off, 1kHz, 3kHz, 7kHz |
S Filter | Off, 1kHz, 3kHz, 7kHz |
LFE | |
*Discrete only. |
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†Cinema only. |
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What it changes
Allows you to specify how DVD Audio channels 3+4 should be interpreted: Off ignores them, 5.1 and 7.1 use them for centre and LFE, Side uses them for the side speakers, 7.1 adds side speakers to 5.1.
Allows you to specify which speakers the surround channels should be sent to in a system with four surrounds.
The cutoff of high frequencies from the rear surrounds.
The cutoff of high frequencies from the side surround.
The relative level of the LFE bass channel.
