Linear Acoustic UPMAX ISC, Руководство пользователя

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Figure 6-2 - Format controls
LFE Channel Controls
The LFE channel controls are used to tune the crossover frequencies, gain, and signal routing of the low-
frequency effects audio.
LFE Crossover
The LFE Crossover control (6-3A) defines the frequency at which audio below below the setting is routed
to the LFE channel and audio above is sent to the Lf, Rf, C, Ls, and Rs channels. The crossover is typically
set between 60 and 100Hz. This control works in combination with the LFE Routing and LFE Gain controls
to create the LFE Channel.
Mid-Bass Crossover
Audio sent to the Center channel is split into two bands, LF and HF. The Mid-Bass Crossover control (6-
3B) defines the crossover frequency of the split.
Splitting the Center channel into two bands allows the user to freely control the width of each frequency
band accross the Center, Left, and Right soundstage.
This can be very useful in keeping the main phase-correlated signal (HF band) in the Center Channel for
dialog while spreading the lower frequency portion of the Center channel audio (the LF band) - which could
still contain some low-frequency dialog along with music and effects - accross all three front channels.
LFE Routing
The LFE Routing control (6-3C) balances the amount of LFE content (audio below the LFE Crossover
Frequency setting) sent to the LFE channel verses what remains in the Lf, Rf, C, Ls, and Rs channels.
Setting this control to 0.50 sends 50% of the audio below the LFE Crossover the LFE channel and leaves
50% in Lf, Rf, C, Ls, and Rs channels. A setting of 0 sends no audio below the crossover frequency to the
LFE channel, while a setting of 1 sends all audio below the crossover frequency to LFE channels, effectively
removing it entirely from the remaining channels.
LFE Gain
The overall gain level of the LFE channel is set by the LFE Gain control (6-3D) and is typically set at a
value of 0dB.