Once the speakers are managed using DEQX™ speaker
correction, the in-room response is measured and corrected. DEQX™ room
correction is then targeted directly at the room acoustic effects,
rather than trying to correct everything in one go.
Listening position
measurements are taken using a calibrated microphone. The measurements
produce an impulse response and frequency response of the room,
which can then be used for analysis. The room correction can be tailored
to each user's preference, allowing control of the frequency correction
region, maximum boost and cut, and different EQ styles. When using
multiple measurement positions, only common peaks and troughs present
in each measurement are corrected. Alternatively the user can sum
together any set of measurements, or select one that is characteristic
of a group. DEQX™ cepstrum based logarithmic
smoothing allows a controllable amount of resolution in the measurement
signal without destroying the phase response. This more accurately
represents the room response that we perceive.
The flexible measurement analysis system allows objective acoustic
evaluation of speaker and subwoofer placement, and any physical room
treatments or furniture placement. DEQX™ room correction then allows
the remaining room response modes (which were previously unmanageable)
to be corrected. |
