#9 Dynamic gain control of R,L and C channels like ProLogic

[pako kopa]

Here is the meaning of ProLogic as said on Dolby pages:

In passive matrix the L and R inputs go straight to the Lt
and Rt outputs without modification. The C input is
divided equally to Lt and Rt with a 3 dB level reduction
(to maintain constant acoustic power in the mix).

In ProLogic in the case where a single sound–dialogue–is
present in the center channel (Lt=Rt), with control
circuits, the decoder can decide to eliminate the
unwanted dialogue leakage by turning down the gain of
the left and right speakers, leaving only the desired
center output audible. The same procedure may also be
used to isolate the left channel output by turning down
the center and surround outputs when only an Lt input
signal is present. In fact, for an input signal encoded at
any position in the 360-degree circle, the separation can
be completely restored with this simple method to equal
that of a discrete four channel system.

Will be possible in the MatrixMixer to implement this?

[Valex]

Logged In: YES
user_id=623002

It is one of the main ideas this project was started. And of
course I plan to try something of that kind in the future.