It is not possible to *inject* an upper filter driver above a WaveRT driver to intercept audio data like you would be able to on a WaveCyclic or WavePCI driver (you won't see the audio data.) But you can *write* a virtual audio driver using any portcls miniport interface (or wdmaudio, for that matter.) -----Original Message----- From: wdmaudiodev-bounce@xxxxxxxxxxxxx [mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Robert Bielik Sent: Monday, October 8, 2012 12:06 PM To: wdmaudiodev@xxxxxxxxxxxxx Subject: [wdmaudiodev] Re: (no subject) Tim Roberts skrev 2012-10-08 19:12: > Hmm, there goes my standard advice that it is impossible to write a > virtual WaveRT driver... Hehe... my exact thoughts ;) /Rob ****************** WDMAUDIODEV addresses: Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx URL to WDMAUDIODEV page: http://www.wdmaudiodev.com/ ****************** WDMAUDIODEV addresses: Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx URL to WDMAUDIODEV page: http://www.wdmaudiodev.com/