This article has been archived. It is offered "as is" and will no longer be updated.
You use Microsoft RoundTable to record multichannel audio in a quiet conference room, and then you play the audio file. After you do this, some parts of the audio file are missing, and the audio file has lots of echo.
This problem occurs because of a fault in the audio digital signal processor (ADSP) driver. The fault in the ADSP driver affects the acoustic echo cancellation (AEC) feature of Microsoft RoundTable. This behavior causes an echo in the audio file.
To resolve this issue, install the hotfix that is described in the following Microsoft Knowledge Base article:
945549 Description of the Microsoft RoundTable firmware hotfix package: December 31, 2007
Microsoft has confirmed that this is a problem in Microsoft RoundTable.
For more information about the previously released hotfix package for Microsoft RoundTable firmware, click the following article number to view the article in the Microsoft Knowledge Base:
942334 Description of the Microsoft RoundTable firmware hotfix package: September 14, 2007