This is written in a bit of a hurry and without the software in front of me but
basically ...
Mute the feed to your speakers.
For each mic {
set the coarse gain as necessary (usually the -50 or is it -55 dB)
turn its meter on and adjust fine gain on the mic until loudish
speaking gets it above the halfway (0 dB) mark while normal
speaking has it just below
turn off AGC (in my opinion)
turn off gating if you're going to be in a small or medium meeting
but arguably leave it on if you're in a monster meeting
make sure echo cancellation is on and the reference is to the
feed to your speakers
}
Now go to the Outputs frame and turn on the meter of the feed to the
audio computer. Adjust its gain until it is like the mics' (just below 0 dB
for normal speech, just above for loud speaking).
Now go to RAT and get it so that normal speaking is usually green with
a few yellows, and loud speaking just occasionally hits a red. Make sure
RAT silence suppression is OFF - let the Gentner do everything or it
will get confused and sulk.
Now turn your speakers back on and, in RAT, get the incoming level
from a trusted source into the same region (green/yellow normal, yellow/red
occasionally).
Now back to the Gentner and look at the Line input from the computer - get
that straddling 0 dB as above.
Now go to the Outputs frame and get the same result on the output(s)
feeding the speakers.
Finally go the the speakers (if active) or amps (if passive) and set the sound
level to a comfortable level; if you have a sound level meter 70 dBA on
A-weighting is conventional.
Never be in a hurry to adjust audio when you first get into a venue; the echo
canceller takes time to settle (say 2 mins) so let things ride for that amount
of time while you get seating, lighting and camera angles sorted out, THEN
fix the audio if there's still a problem.
Cheers
Chris
____________________________________________________________________
Chris Osland Office tel: +44 (0)
1235 446565
Digital Media and Access Grid Medialab tel: +44 (0)
1235 446459
BIT Department Access Grid room tel: +44
(0) 1235 445666
e-mail: c.d.osl...@rl.ac.uk Fax: +44
(0) 1235 445597
CCLRC Rutherford Appleton Laboratory (Bldg. R18)
Chilton, DIDCOT, Oxon OX11 0QX, UK
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-----Original Message-----
From: owner-ag-t...@mcs.anl.gov [mailto:owner-ag-t...@mcs.anl.gov]On Behalf
Of Natalia Costas Lago
Sent: 20 December 2004 10:25
To: ag-tech
Subject: [AG-TECH] Fw: Test to get better XAP settings
I had to resend this email.. it doesnt reach the list!! Maybe with this
second try?
----- Original Message -----
From: Natalia Costas Lago<mailto:nata...@cesga.es>
To: ag-tech<mailto:ag-t...@mcs.anl.gov>
Sent: Monday, December 20, 2004 11:04 AM
Subject: Test to get better XAP settings
Hii..
I need someone to help me to improve my XAP settings for a better audio
quality.. anyone out there? Or just to help me.. I can try to guess the better
ones...
Thanx in advance,
Kind regards,
Natalia.
-----------------------------------
Natalia Costas Lago
email: nata...@cesga.es<mailto:nata...@cesga.es>
Centro de Supercomputacion de Galicia (CESGA)
Avenida de Vigo, s/n Campus Sur
15706 Santiago de Compostela - SPAIN
Tel: +34 981 56 98 10
Fax: +34 981 59 46 16
http://www.cesga.es/
