[LAU] jdelay - measured latency of a usb interface

Frank Barknecht fbar at footils.org
Tue Mar 24 15:49:42 EDT 2009

Arnold Krille hat gesagt: // Arnold Krille wrote:

> > 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."
> I know that clemens knows his stuff. But he is talking about the usb-protocol 
> here. 

He is saying that because the USB protocol works the way it works, all USB
audio devices have the same latencies. I don't know how that statement is open
to a different interpretation than that all USB audio devices have the same
latency. :)

I know, that the manufacturers of USB cards like to brag with their hardware
being faster than that of the competition, and they would never openly admit,
that a 3 Euro BurrBrown chipset is just as fast as a 600 Euro device - but what
if that's actually the way it is?


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