Old 5th November 2011, 18:40   #1
thinktink
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Fully Adjustable External Soundcard

I'm looking for an external USB soundcard that will allow me to do hardware fine tuning of the intrinsic playback rate (and possibly the recording rate.) Does anybody know of one, regardless of price? I'm finding that my computer's built-in soundcard playback rate is really crappy. It's causing de-syncs after long continuous playback sessions and it's driving me crazy.
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Old 7th November 2011, 00:56   #2
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I'm not sure what to look for based on the limited information you gave. It almost sounds like you want a mixer/equalizer.

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Old 7th November 2011, 05:18   #3
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When I said playback rate I probably was using wrong terminology. Buffer send/receive rate might have been more appropriate. And XRuns instead of de-syncs.
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Old 8th November 2011, 02:55   #4
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I honestly still don't know what you are looking for.

However, m-audio makes some great cards at a low cost compared to various pro series cards such as these.

http://www.m-audio.com/index.php?do=...=PCIinterfaces

Any of those what you are looking for?
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Old 8th November 2011, 02:56   #5
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oops. External USB.

Let's try these instead: http://www.m-audio.com/index.php?do=...=USBinterfaces
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Old 8th November 2011, 04:33   #6
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Quote:
Originally Posted by fc*uk View Post
I honestly still don't know what you are looking for.
I'll try an example:

Let's suppose you have two different audio cards from completely different manufacturars with completely and totally different chipsets. Now lets suppose that while the oscillator of one actually runs at 44100.02 and the oscillator of the other actually runs at 44099.9998 even though they're supposed to run at a perfect 44100. Now lets also toss in Virtual Audio Cables that have their timing CPU at 44100.00001. Now lets say you connect everything together on the software side (like the audio repeaters or some other patching/mixing software), Card 1 --> Virtual Cable --> Card 2. What happens is after a while (I think about 2 or 3 hours) the data from/to one device either start to accumulate (overrun) or runs out (underrun) to/from the other card and causes your audio to go all to hell in a handbasket because everything isn't perfectly and totally 100% running at the exactly precise rate. That rate is what I would like to be able to tweak somehow at the hardware level, either with a physical knob on the device or via the device drivers.

I hope this example clears your confusion.
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Old 8th November 2011, 18:38   #7
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Much better idea.

So, in my limited dj world, we commonly solve this issue by using some type of an audio interface box that is it's own soundcard that can handle multipule sources and runs via USB.

Latency and buffering issues between USB audio card and the computer are then handled by various flavors of audio software such as fruity loops, ableton, Traktor, Torq, etc.

Examples of such boxes are NI's Audio 6.

The only way I have ever seen this handled is to simply run it through one audio card. Though that Audio 6 is similar to the m-audio products I listed earlier.
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Old 8th November 2011, 23:12   #8
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Didn't think about it that way. Thanks. I wish it had some XLR or S/PDIF on it though. Guess I can't be too picky though with my obsession for perfection.
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