thanks for your clear answer. > Well, the problem is not so much "low latency" as it is "predictably > latency", right? For example, if you have a DirectShow graph to mix the > streams, and you discover that your USB audio stream is 10 milliseconds > behind your PCI audio stream, you can compensate for that by putting a > delay into the PCI audio stream. That latency is going to be pretty > consistant for that given set of hardware. No matter what you do, even > if you use DirectKS, you are never going to get two audio streams to > line up exactly. You will always have to compensate in some way. > right. I was not so happy to choose DirectKS vs DirectShow because of that problem... For the latency, i did not actually really calculate the requirement for the application. One part of the application will be a VST plugin. This Plugin will get the sound from the external USB device and pass it to cubase (or ..) for playing. I don't know if 20ms of latency will be a problem in that configuration. >Using DirectKS is going to be a lot more trouble than building and >tuning a DirectShow graph. You need to be really sure that DirectShow >won't solve your problem. I will try DirectShow. In that case can i use i use the UAA USB Audio 1.0 class driver in the graph? Thanks again for your help, nugen > -- > Tim Roberts, timr@xxxxxxxxx > Providenza & Boekelheide, Inc. > > ****************** > > 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/ > >