Meridian Configuration Program, Руководство по настройке

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R o o m
c o r r e c t i o n
2 9
Room Correction
Introduction
The Meridian Room Correction program works in conjunction
with the Meridian Configuration Program to create a set of one
or more room correction profiles matched to your room. These are
then downloaded to the digital surround controller and can be
associated with particular presets, or selected from the front panel.
Selecting a profile applies a set of digital filters individually to each
speaker to achieve the required room correction.
If you use a single loudspeaker layout you may choose to have one
room correction profile, and use this with all presets. If you have
separate speaker layouts for use with Music, Logic, and 5.1 Movie
sources you will need to calculate a separate room correction profile
for each speaker layout. These will then be selected automatically
by the digital surround controller depending on the audio format. In
addition, you can create separate room correction profiles to take
account of changes to the room, such as the position of large items
of furniture, or with curtains open or closed.
How room correction profiles are
calculated
Calculating a room correction profile is a time-consuming and
mathematically complicated process. The Meridian Room Correction
program performs the necessary sequence of measurements and
calculations completely automatically, using a PC connected to
the digital surround controller, with the minimum of interaction. It
works as follows:
First you need to set up a microphone close to the listening
position, and connect this to the A8 (L) input of the G68 Digital
Surround Controller. Usually a standard sound pressure level meter
will be used as a microphone; this can be the same one used for
setting the speaker levels using the Calibration procedure. After an
The G68 Digital Surround Controller incorporates room correction, which takes advantage of
advanced digital signal processing techniques to compensate for room artefacts, including
resonances and reflections, to give a significant improvement in the sound.
This chapter explains how to run the Meridian Room Correction program and use it to create
profiles for use with the digital surround controller.