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How do I find out which sample rates my card can output?, Onboard sound card
phofman
post May 10 2013, 17:58
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QUOTE (bennetng @ May 10 2013, 17:41) *
My meaning is in XP, the soundcard support true 32-bit integer resolution (internal loopback mode)


How does the internal loopback mode actually work? Does the signal go through the card or is it looped in the driver? Which card is that?
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phofman
post May 10 2013, 18:04
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QUOTE (saratoga @ May 10 2013, 18:14) *
Alsa is little different then on windows. You still have no idea what the sound card is clocked at.


On windows I certainly don't, that is very true smile.gif

That is why I am trying to present how things work on other systems for those interested in hardware details.
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bennetng
post May 10 2013, 18:28
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QUOTE (phofman @ May 11 2013, 00:58) *
QUOTE (bennetng @ May 10 2013, 17:41) *
My meaning is in XP, the soundcard support true 32-bit integer resolution (internal loopback mode)


How does the internal loopback mode actually work? Does the signal go through the card or is it looped in the driver? Which card is that?

I can't tell if it is looped in the driver or through hardware DSP because different devices may perform differently but many devices support this function. Devices I actually used are Creative SBLive (CT4830/SB0220) with both Creative and kX Drivers, Creative X-Fi XtremeMusic/XtremeGamer/Titanium/Titanium HD), Roland SC-D70 and RME Multiface II connected with HDSPe PCI card.

Other devices I haven't used but known to have internal loopback function are ESI interfaces with DirectWIRE drivers. Just google "esi directwire" to find more information.

There are even software based solutions like ReWire and VAC
http://en.wikipedia.org/wiki/ReWire
http://software.muzychenko.net/eng/vac.htm

Devices support hardware DSP based operation (mixing/resampling/looping etc) have definite advantage like low latency and low CPU usage though.
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