[wdmaudiodev] Re: Issues with MS AEC.
- From: "Martin Puryear" <martinp@xxxxxxxxxxxxxxxxxxxxx>
- To: <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Thu, 24 Jul 2003 15:07:18 -0700
The reason this isn't very satisfactory as an answer is that there ISN'T really
a way to stop other clients audio processing. There isn't an
"insert-on-the-fly" option for the system KS graph in XP.
Martin Puryear
Development Manager
Microsoft Windows Audio/Video Devices Group
This posting is provided "AS IS" with no warranties, and confers no rights.
Ce message est fourni en l'état, sans garantie d'aucune sorte, et ne vous
confère aucun droit. Vous assumez tous les risques liés à son utilisation.
________________________________
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Korolev, AlexeyX
Sent: Wednesday, July 23, 2003 7:25 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: Issues with MS AEC.
Martin,
Thank you very much for information.
One question:
What do you mean to ensure that no audio is being captured or played back when
AEC is instantiated? Do you recommend to stop all audio processing or to wait
until audio processing will finish.
Is it possible to stop all audio processing?
Thanks,
Alexey
To: <wdmaudiodev@xxxxxxxxxxxxx>
Subject: [wdmaudiodev] Re: Issues with MS AEC.
From: "Martin Puryear" <martinp@xxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 22 Jul 2003 17:03:55 -0700
This is unfortunately a known issue with the XP audio architecture. The only
"workaround" (not really a good one) is to ensure that no audio is being
captured or played back when AEC is instantiated. I realize this isn't a very
satisfactory response. We are addressing this in the next major version of
Windows.
Martin Puryear
Development Manager
Microsoft Windows Audio/Video Devices Group
This posting is provided "AS IS" with no warranties, and confers no rights.
Ce message est fourni en l'état, sans garantie d'aucune sorte, et ne vous
confère aucun droit. Vous assumez tous les risques liés à son utilisation.
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx
<mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx> ] On Behalf Of Korolev, AlexeyX
Sent: Tuesday, July 22, 2003 7:45 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Issues with MS AEC.
Hi,
I'm writing full-duplex audio processing code. I've added MS AEC node to the
driver stack. In most cases AEC is working fine.
But, if user starts playing sound using Wave Out interfaces (for example using
Windows Media Player) before our driver has inserted AEC to the driver stack,
AEC doesn't work. I can't insert AEC node in topology when user-mode
application is using Wave Out.
Does anybody have information about it? Is there any known workaround for this
problem?
Thanks,
Alexey
Other related posts:
