Emotiva UMC-200 User Manual page 25

UMC-200
EmoQ Gen2: How it works.
For the technically inclined, here is a brief explanation of how EmoQ Gen2 works:
The first set of tones you hear (the ones that get progressively louder) are used to set an
appropriate level at which to run the test.
The next set of tones are used to determine the individual level, phase, and distance of
each speaker. This is done three times, and the results averaged, to minimize errors.
The results are then displayed.
The next set of tones are used to determine the optimum EQ settings. First, a loud set of
tones is run, and the highest response peaks are reduced. The subsequent tests, which
may be run anywhere from two to five times depending on how much adjustment of the
initial rough curve is necessary, are basically repeats of the initial run. For each run, the
result is averaged and compared to the reference (flat) curve, and each time this is done,
the response peaks are again reduced, bringing the final result closer to the reference
curve each time. Once the curve is as close as possible to the reference curve, then the
final offset and level calibration measurements are performed.
The final sequence starts off with a loud burst of unequalized test signal, followed by a
quieter burst of the test signal with the calculated EQ applied. The third burst consists of
the difference between these two signals, and is used to detect any unaddressed room
modes (nulls), which are then the subject of further adjustments. The final loud burst is the
equalized and adjusted test signal, and is used to set the final, precisely calibrated, level
trims for each channel.
The final results are then displayed, and you are prompted to save them.
Note: The results displayed by EmoQ are provided to give you general insight into
the areas where EmoQ has implemented corrections, and the frequency bands
and ranges which are affected by those corrections, and should not be interpreted
to literally represent the correction curve itself. The details of the full calibration
process, and the resulting correction curves, are far more complex.
The values provided are actually representative of the general offset values used to
apply the corrections, and so adjusting them will produce a corresponding change
in the correction curve (so you can, for example, increase the boost or cut in a
particular band by adjusting the corresponding value in the EmoQ configuration), but
they should not be interpreted as representing the entirety of the correction that is
applied, and CANNOT be copied into a Manual EQ configuration memory to produce
a Manual EQ setting similar to the EmoQ results.
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