On Tuesday 09 December 2008 18:04:20 Christopher Stamper wrote: > On Sun, Dec 7, 2008 at 7:54 AM, Frank Barknecht <fbar@xxxxxxxxxxx> wrote: > > Btw.: all USB soundcards have the same latency. > I guess that's because USB has a certain required latency? Interesting, > either way... Actually with _every_ digital audio you get latency. "Zero Latency" is only possible in analog audio processing and even there it might fail do to phase- shifts of capacities and coils. In the digital world there is always some delay in the analog-digital- converter and in the digital-analog-converter. There is always some buffering between the converters and the chip of the sound-device. And then there is the transport to the pc's ram and cpu (with buffering). So even with PCI-cards you always have latency. But with usb (and firewire) you have a transport additional to the pci-bus, which adds extra latency. And it doesn't matter which usb-device you use, if it uses usb as transport, they all have the same latency in your machine. Have fun, Arnold
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