[AG-TECH] XAP 800

[Forest Come-Peace]

Basically you have three outputs in your XAP800 from
the total of 12 available outputs that are being used.
The first output is where you send it to your
codec(line-in of your sound card after MM100 match
maker), the second output is to your speaker out and
the third one to the telco transmitting bridge( This
is only used when you have XAPTH2 unit). Than XAP800
also have 8 gated inputs along with 4 cross connect
inputs. Connect all your mics to all those 8 gated
inputs and than inside the set up from mics where
there is a tab call AEC, click on in and you will find
the option of where to set your echo reference.
Normally, speaker out is being used as the echo
reference. Remember to enable the AEC after choosing
the adaptive echo reference.

The other 4 extra cross connect inputs are : Rx from
codec, Rx from telco and any extra that you might find
useful.
--- Allan Spale <aspale at evl.uic.edu> wrote:
> Mustafa,
> 
> Sorry for the delay in responding but I am checking
> my e-mail from home
> today.
> 
> In the image that I sent to you, Output 1 is where
> EVL's speakers are
> connected.  It is a bit weird because we are first
> connecting these
> outputs into the "Mackie Mixer" output (output 3),
> and then connecting the
> output from the mixer directly to the speakers
> (without using the matrix).
> So in your case, I would use output 3 as a reference
> for considering what
> is connected to your speakers.
> 
> To try to generalize the situation, it seems that
> echo cancellation works
> well when you send any sound source that will be
> coming out of your
> speakers into some output that is not being used
> (here, output D was
> used).  Then choose to echo cancel on that output.
> 
> But this is from the world of AP 400 that I somewhat
> know.  I am not sure
> how to proceed (contact Gentner, read the manual,
> talk to people on AG
> MUD, etc.).
> 
> Best of luck.
> 
> 
> Allan
> EVL at UIC
> node-op  
> 
>  On Mon, 17 Dec 2001, Mustafa Varank wrote:
> 
> > Allan,
> > Thank you for the advices but XAP 800 does look
> different. There are 
> > processors ( no sub?) on XAP800 and you should set
> "EC Reference and PA" 
> > differently. Even i tried to set it, it did not
> work...I am doing something 
> > wrong but i could not find...
> > Could you please tell me also where did you put
> speakers on your sample 
> > matrix picture?
> > I will be waiting to see the updated web site...
> > Thanks,
> > Mustafa
> > 
> > At 03:26 PM 12/16/2001 -0600, you wrote:
> > >Mustafa,
> > >
> > >I have been working on creating a more up-to-date
> Gentner configuration
> > >document, so I will attach an image from the
> document that will eventually
> > >appear in the AGDP.
> > >
> > >I am not sure how ifferent the XAP 800 is from an
> AP 400, but I would
> > >imagine that the echo cancellation should be
> similar.
> > >
> > >In the matrix, notice that Output D is labeled
> "Ghost Output".  This
> > >output, which should have nothing connected to it
> physically, will be used
> > >in echo cancellation.  This is demonstrated by
> looking at the bottom of
> > >the image where you will select which output to
> serve as echo
> > >cancellation.
> > >
> > >You want to echo cancel anything that would come
> out of your speakers so
> > >that the Gentner does not think that this is
> regular audio going into the
> > >mics (or something like that...I am not a
> complete expert on this audio
> > >stuff).  Specifically, this would be sound from
> your telco and audio from
> > >the AG.  The AG sound should be entering an
> input, and the sound from the
> > >telco should be "Telco in".
> > >
> > >Create a crosspoint on the "Ghost Output" and the
> AG audio in row (RX from
> > >AG) and the "Telco In" row.
> > >
> > >In the "Echo Cancellation Setup", select the
> output channel that
> > >corresponds to the output designated as the
> "Ghost Output".  Please note
> > >that the scenario described above is for the
> net-telco preset (preset 1).
> > >For preset 2 (concerning the "Ghost Output" only
> and not the other mics,
> > >inputs, outputs, an stuff), only have the telco
> crosspoint set in the
> > >"Ghost Ouput" column.  For preset 3, only have
> the RX from AG (or whatever
> > >you named that input that receives audio from the
> AG) crosspoint set in
> > >the "Ghost Output" column.
> > >
> > >Also as far as general guidelines, make sure that
> your gain is not set too
> > >high on the mics or this will cause echo. 
> Aditionally, make sure that
> > >your mics are not too close to the speakers or
> else you may have echo
> > >problems.
> > >
> > >Best of luck in figuring this problem out.
> > >
> > >
> > >Allan
> > >EVL at UIC
> > >node-op
> > >
> > >
> > >On Sun, 16 Dec 2001, Mustafa Varank wrote:
> > >
> > > > Hello,
> > > > Can anybody send me some suggestions about how
> to set echo cancellation on
> > > > XAP 800? I am having hard time to figure it
> out. And if you can send it
> > > > today or  early monday morning that would be
> great...
> > > > Thanks
> > > >
> > 
> 


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