Mastering

Engine Bank F11, decade 2: Format Down Conversion for Production Audio

0 5.1 to LCRS Toolbox 5.1

The Toolbox 5.1 algortithm can be used for monitoring as well as production purposes. The

F11 decade 0 bank holds monitoring presets, while decade 2 is for examples of production

presets.

This algorithm’s resolution is 48 bit fixed point, and when no special functions are turned on,

it is bit transparent. For a bit transparent bypass of all 5.1 channels, move the Fader to 0.0

dB, or press the Bypass key.

Downmix coefficients can be adjusted, and summing points set to normal Mono (0 degree)

or 90 degree Mono. 90 degree mono preserves out of phase elements in the mono signal,

and attenuates fully correlated elements by 3 dB. Both characteristics are useful in film, DVD

and post production.

Trimming in timing (ms and samples) can be found in the Trim page, and may be added if

speaker placement or signal correction calls for it.

The algorithm includes precision test signal generators for calibration of speakers,

distribution of test tones etc., as well as solo/mute functions for realtime inspection of various

signals.

Note: In the Production presets, the “.1” input and output is referred to as “LFE”, unlike the

Monitoring presets, where the output from this channel is labelled “Sub/LFE” because of its

association with a certain speaker.

Output Format Feed From SL/SR Fader

Selects the downmix

performed to a 5.1 input.

Use the control to

change in realtime

between different

presentation formats.

Sets the coefficients

when summing SL and

SR. To sum SL and SR

with a 90 degree offset,

adjust the 90 degree

Mono parameter on the

Format page. The S

output can be limited

using the Limiter on the

same page.

Output fader for all 5.1

channels.