Try this: in IMiniportWaveCyclicStream::SetNotificationFreq, change the passed value of Interval (param 0). This is not recommended, but seems to work in Sonar. The displayed latency changed based on what I set the Interval param to be. good luck, Philip Lukidis ----- Original Message ----- From: "uwe kirst" <u.kirst@xxxxxx> To: <wdmaudiodev@xxxxxxxxxxxxx> Sent: Thursday, April 15, 2004 4:21 PM Subject: [wdmaudiodev] 10ms latency (wavecyclic) > Hello, > does anyone know a way to decrease the latency of wavecyclic (10ms > default) or do I have to use another driver model (wavepci or avstream)? > Uwe > > ****************** > > 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.de/ > > ****************** 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.de/