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In Reply to: Re: PC + Asynchronous USB DAC Question posted by Ryelands on January 5, 2012 at 03:05:06:
When talking about that website, I do not think information on this page is correct
http://www.cicsmemoryplayer.com/index.php?n=CPlay.ASIOLatency
Various latency has no impact on PCI data bursts, the buffer mentioned is not a buffer of the soundcard, but a region of RAM dedicated to DMA for the card. The PCI DMA activity is independent of size of this region, a PCI card keeps fetching data continuously into its small fixed buffer regardless of how often it wraps up reading the memory region.
Specifically for the mentioned Juli:
http://alsa.cybermirror.org/manuals/icensemble/Envy24HT091DS.pdf , page 4-18.
Upon finishing reading a part of the region an interrupt is thrown, but this can be tuned to just a few a second. Such setup will not create more noise than thousands of interrupts a second as with the recommended minimum latency. Plus IRQs are not the data burtst the page talks about. In fact it does not mention IRQs (being the major issue) at all.
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Follow Ups
- Re: PC + Asynchronous USB DAC Question - phofman 04:13:10 01/05/12 (2)
- Re: PC + Asynchronous USB DAC Question - Tony Lauck 09:04:45 01/05/12 (1)
- Re: PC + Asynchronous USB DAC Question - play-mate 03:07:24 01/06/12 (0)
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