In addition to the features offered in
the BASIC PDC preamp configuration,
in this scenario the DEQX Calibrated™ microphone, supplied with
the DEQX Calibration Kit, is used to measure the room and speaker behavior
at the main listening area. The calibration kit also includes DEQX’s
measurement, analysis, and correction software that runs on a Windows
XP PC, connected to the PDC via USB or RS-232.
Seven bands of DEQX’s minimum-phase Parametric
EQ are provided for room correction, or 10-bands if DEQX
Media Correction is not used. Measurements are
shown graphically on the ‘Equalizer’ display. Following
a measurement or measurements, the ‘auto-set’ control
brings up a wizard that provides default suggestions, and asks what
frequency range ‘auto-correction’ should
be applied to (default is 20Hz to 300Hz), how many bands to allocate
(default is 5), and what maximum boost and cut is allowed (default
is +6dB, cut is -10dB).
Multiple measurement locations
can be made around the listening area. When ‘auto-set’ is
chosen, the correction will be based on the average chosen. Four
different room correction curves can be saved in the PDC, so correction
profiles can represent a small or wide listening space for example.
The EQ bands
work in real-time and can be manually added or subtracted. When ‘auto-set’ is
chosen, the suggested correction is graphically overlaid above the
room measurements. Any of the filter bands can be selected and adjusted
manually while music is playing. The “Auto-set” feature
automatically sets correction parameters for the lower three to four
octaves specified, where equalized room correction is most relevant.
However, any band can be manually centered on any frequency up to
20KHz, with bandwidths adjustable from one semitone to 4-octaves.
Installation in the audio chain is the same as for BASIC install. |
