2.2
WHAT THE SDEC DOES
17
nothing less than magic! With 90 available bands of parametric equalization (each adjustable for center frequency,
amount of boost or cut, and bandwidth (the reciprocal of Q), its ability to address the specific problems of a given envi-
ronment is far beyond any graphic equalizer. Typically, such devices are two-edged swords, able to cause at least as many
problems as they solve. In this case, however, a preprogrammed computer, using proprietary algorithms developed over a
period of several years by JBL, guides the automatic adjustment process, transforming acoustic torture chambers into
acoustically superior environments. The essential ingredient necessary for success is knowledge of what can and cannot
be corrected with equalization.
Figure 5:
Effect of Room EQ
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