From: Arnold K. <ar...@ar...> - 2008-05-28 08:36:08
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Hi, Am Mittwoch, 28. Mai 2008 schrieb Patrice: > > If they write a > > driver for the exact device, why don't they know the latency added by the > > bus and the device? > > Note: On ffado the number the gui shows is almost the real number, > > because it already takes the bus into account. Only ffado is to generic > > to know the device-latency of all the devices even if the manufacturers > > would provide them. :-) > If I understand correctly, the lowest I can go in FFADO now is 3 x 128 (3 x > 2,9 ms at 44.1, so 8,7 ms) so I have a real latency of 8,7 ms? RTL... (plus ad-da-buffers) BTW: You can go lower with ffado. Its just not as stable. ;-) 3x128 is rather stable on current ffado and is about the same as 3x64 with freebob. Because ffado now also takes the fw-bus-latency into account... > I would sure > appreciate that Windows shows me the real latency but that's hard: if I > only play a sofsynth, I have 1,5 ms + the D/A buffer. Well, plus one time the transport-latency. Which is probably the biggest part of the difference between "what windows reports" and what the rtl-measurements show... And plus the latency of midi-io and its bus into the pc. /me tries to wrap his head around all the latency stuff... Arnold -- visit http://www.arnoldarts.de/ --- Hi, I am a .signature virus. Please copy me into your ~/.signature and send me to all your contacts. After a month or so log in as root and do a "rm -rf /". Or ask your administrator to do so... |