Re: [LAU] jdelay - measured latency of a usb interface

Hallo,
Arnold Krille hat gesagt: // Arnold Krille wrote:
> I _seriously_ doubt that all usb devices have the same latency. Indeed they do
> alls have the same latency introduced from the usb-protocol added to their
> specific latency, but that specific latency still depends on the actual hardware
> and the driver. And yes, there are different usb-audio drivers in the linux
> kernel, just search for *usx2y* for example. And the hardware latency is
> determined by the converters and the processing chip, just like with any other
> sound device, be it pci, pcmcia or firewire based...
>
> Have fun and excuse my nitpicking,

I'm no expert on this, but IMO ALSA-dev Clemens Ladisch is one. He wrote:

  "Due to how the USB protocol works, all USB audio devices have the same
  latency."
  http://lalists.stanford.edu/lau/2005/06/0200.html

Ciao

-- 
Frank
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