| Just to add to this. For the Apogee Symphony with Symphony I/O some characterisations have been done of what can be sustained under a good work load. Basically, for a 96kHz session, 1.6msec analog-to-analog processing has been measured and verified with room to actually do work (not just memcpy input to output!). So, this kind of performance can be achieved with converters that are providing high fidelity.
I totally agree with Markus' comments as well - that you can achieve very good performance by using a Mac, just "straight out of the box", and that shouldn't be overlooked as the audio quality there is good enough for many uses (certainly for the use case that started this thread).
Thanks
Bill On Jul 6, 2012, at 4:41 PM, Markus Fritze wrote: With CoreAudio and the Build-In audio hardware @ 44100Hz with 16 samples buffer size we did measure a round-trip latency of about 2ms. Measured, not guessed. The only other hardware we found that is able to get 16 samples under CPU load is the Apogee Symphony, but you won't get better than the internal audio hardware.
Markus On Jul 6, 2012, at 3:36 PM, Paul Davis < email@hidden> wrote:
On Fri, Jul 6, 2012 at 4:19 PM, David Reaves <email@hidden> wrote:
For some time now, Windows using ASIO has provided users with millisecond-range latency. If by "dedicated hardware" you include a huge number of run-of-the mill PCI audio cards, then you are correct.
this is only true if by "millisecond range" you mean "several milliseconds" and if by latency you mean "playback latency" and by "provided users" you mean "provided users whose non-audio h/wand other software doesn't get in the way".
there's a large amount of varyingly-inaccurate, misleading info that circulates around regarding various kinds of latency on various general purpose OS's. i think its very important to be clear about all the caveats and details.
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