Fw: [AG-TECH] XAP setup
Natalia Costas Lago
natalia at cesga.es
Tue Dec 28 02:34:13 CST 2004
I've read about mics gain adjustment, but i am unsure about what is best
about gain from "Rx from Codec" input (it is better to send the loudest
level from PC audio, so I will have a strong signal on the XAP input? or
that doesnt matter?)
I'll think about NOM parameter, that is something i missed to think about.
----- Original Message -----
From: <peirce at maine.edu>
To: "Natalia Costas Lago" <natalia at cesga.es>
Sent: Monday, December 27, 2004 9:47 PM
Subject: Re: Fw: [AG-TECH] XAP setup
> The XAPs (I use XAP800's in other projects) are capable of full
> duplex with AEC.
> You might start by checking what your AEC reference for the
> microphones is comprised of. It should be made up of the lines
> sources coming into the room (remote sites, locally reinforced line
> inputs like VCRs). I'm wondering if you may have the microphones
> themselves included.
> You should also check your gain staging (using the meters) so that
> the levels are appropriate at every input and output stage.
> Might you have NOM enabled on the outputs to remote sites?
> This might be altering output levels as the number of mics changes.
> Have you tried contacting ClearOne support?
> On 27 Dec 2004 at 20:29, Natalia Costas Lago wrote:
>> I think we have identified when the problem occurs,... when setting
>> the AEC or NLP (not neccesarily AEC selected) the full duplex
>> capabilities are lost (i play a sound with a PIG and talk at the same
>> time... my voice is completely atenuated!).
>> Is this all I can get from the XAP?. There's no way to get _complete_
>> full duplex and AEC free?. Our users have noticed the effect (when
>> people talk at the same time one is atenuated).
>> Any hint about this? Can any site have a test with us?
>> ----- Original Message -----
>> From: "Natalia Costas Lago" <natalia at cesga.es>
>> To: <ag-tech at mcs.anl.gov>
>> Sent: Monday, December 27, 2004 7:32 PM
>> Subject: [AG-TECH] XAP setup
>> > Hi,
>> > I was wondering wether someone out there could help me to solve some
>> > issues regarding the XAP. It would be good if he/she had the VNC on
>> > the control PC, so i can have a look at the audio levels on the
>> > different stages. I think part of the current problem might be
>> > missconfigured audio levels (i know about theory in mics level.. but
>> > i am unsure about the input audio theory).
>> > We've been working hard on these issues and we are still having
>> > trouble. I would greatly appreciate some more help and patience from
>> > AG community...
>> > Kind regards and thanx in advance,
>> > Natalia.
>> > -----------------------------------
>> > Natalia Costas Lago
>> > mailto: natalia at cesga.es
>> > Centro de Supercomputacion de Galicia (CESGA)
>> > Avenida de Vigo, s/n Campus Sur
>> > 15705 Santiago de Compostela - SPAIN
>> > Tel: +34 981 56 98 10
>> > Fax: +34 981 59 46 16
>> > http://www.cesga.es/
> Garry Peirce peirce at maine.edu 1-207-581-3539
> == Network Analyst
> == UNET Technology Services, Network Operations
> == University of Maine System
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