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11.3
IMPORTANT RECOMMENDATIONS FOR
MICROPHONE PLACEMENT
REQUIREMENTS FOR THE MEASUREMENT ENVIRONMENT
At least a few basic rules should be respected to ensure a robust measurement:
No obstacle between the speaker and the microphone.
No highly reflecting surface (leather sofa, glass table…) close to the microphone.
No background noise during the measurements (Air conditionning, open doors, windows etc…)
No movement during the calibration (disturbs speaker localisation)
REFERENCE MEASUREMENT POINT
The Altitude
32
supports single-point and multi-point calibrations. In both scenarios, a reference measurement position
should be chosen carefully since it will be used by the Optimizer for:
Cross-over drivers alignment
Loudspeaker 3D localisation
Loudspeaker 2D/3D remapping
Loudspeaker relative delay/level alignment
Master delay/level calculation
POSITION AND ORIENTATION OF THE MICROPHONE FOR
THE REFERENCE POINT
The calibration microphone should be placed at the listening position, using the listener’s ears as a reference for its
height. A red led shows the front of the microphone. The red led must be pointed to the front of the sound stage, towards
the center speaker.
During the calibration process the microphone should be screwed on a microphone or camera stand.
Содержание Altitude 32
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