Controlling Audio
75
English
Parametric Equalizer
(DMX1057XR)
In addition to the conventional Graphic
Equalizer, this unit has a parametric equalizer,
which allows you more precise adjustments.
By using each equalizer properly, you can
calibrate the unit more thoroughly.
Adjustment using this function requires
expertise.
When to Use Each Function
●
Parametric Equalizer
Use this to finely correct or improve the
frequency characteristics of the acoustics
of the car in order to establish a basis for
adjustments.
Practiced ears or a measuring equipment
may be required to apprehend the
problems of the sound field inside the car.
●
Graphic Equalizer
Use this to actively create an attractive
sound as conventionally.
Everybody can easily get the result through
trial and error of intuitive operations.
Even more effective adjustments are
possible when the basis is established by
using the Parametric Equalizer.
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About the Parametric Equalizer
This system allows you to freely control the
filter, frequency, Q factor (acuteness) and
slope gain at 14 points consisting of 9 points
common for front/rear/subwoofer, 2 points for
front only, 2 points for rear only, and one point
for subwoofer only.
NOTE
• Configure the Parametric Equalizer to establish
the basis for adjustments before making
adjustments using the Graphic Equalizer.
• The changes made using the Parametric Equalizer
are not shown on the Graphic Equalizer screen.
• You can check the effects using the Parametric
Equalizer ON/OFF key.
About Adjustments
If there are unpleasant peaks, you can slide the
peaking filter to the left or right and search
the frequencies by ear. Studio engineers use
this method to make adjustments quickly and
efficiently.
However, in order to identify peaks and dips
of a car audio system, you have to capture
the pink noise outputted from the speaker
using a microphone and analyze it using a real
time analyzer (RTA). From the analysis result,
identify the peaks and/or dips that need to be
corrected and configure the filters to cancel
them.
About the Filters of Parametric Equalizer
Filters allow you to remove or extract specific
sound through signal processing.
Filter
NOTE
• Cutoff frequency is the boundary between the
passband and the stopband. The definition of
cutoff frequency is a frequency for which the
output is -3 dB of the nominal passband value.
