Eclipse - Fujitsu Ten CD7200 MKII - Manual (Page 67)

How to operate the Sound Adjustment Mode
67
XII
About parametric EQ
A variety of materials are used inside a vehicle to manufacture the seats and windows, and because
these materials absorb and reflect sound in different ways, the parametric equalizer lets you adjust
the peaks and dips of the frequency characteristics inside the vehicle to compensate for this.
An “equalizer” is a function that corrects these peaks and dips in order to flatten the frequency
characteristics. However with a normal graphic equalizer, the median frequency and the Q
(sharpness and band width) are fixed, so that when neighboring bands are corrected, there is a limit
to the amount by which distortion in the peak and dip characteristics can be corrected. A “parametric
equalizer” lets you adjust the median frequency, Q (sharpness and band width) and gain to variable
levels, so that you can make fine adjustments to spot areas of the frequency band.
[Parametric equalizer characteristics]
1.Median frequency can be varied.
2.Gain can be varied.
3.Q (sharpness/band width) can be varied.
High
Peak
Dip
High [Frequency] Low
Low
[Sound pressure]
High
[Sound pressure]
Low
Low High [Frequency]
High
[Sound pressure]
Low
Low [Frequency] High
High
Low
Low High
[Sound pressure]
[Frequency]