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Detection and the Dynamics Duo

combined power of the left and right signals.The more dissimilar the left and right signals

are, the more error in the detector's calculated level. It's as if someone's continuously

messing with the threshold knob! A much better method, although still deficient, is to link

log average detectors. This results in the sum of the average signal amplitudes, but, as we

have stated before, does not correspond with average power and therefore does not sound

as good.

6.True RMS Power Summing

The dbx way, of course, is different. With our True RMS Power Summing, the linked

detectors respond to the sum of the energy (power) of each channel's RMS signal. The

intelligence of these RMS detectors allows the signals to be converted to the power domain,

then summed together in the power domain.This produces a true sum of the energies.The

more total energy, the higher the detectors calculate the combined signal to be.This is how

your ears work--the more screaming children in one room (i.e., the more total energy), the

more irritated you get!

This sum of energies will gain track accurately over a wide dynamic range providing

excellent response at low or high signal levels. No phase cancellation, no inaccurate

modeling of human hearing response, and heaven forbid, no ignoring one channel of signal

information.When detectors are linked intelligently and sum signals the same way that your

ears do, compression, limiting, or expansion will sound the way it should!

7. Conclusion

No need for a conclusion here. You make your own. Thousands upon thousands of

industry professionals have already made theirs, making dbx the most respected and most

used dynamics processing line on the planet.

Detection and the Dynamics Duo - November 1998

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