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Old 25th January 2014, 08:24 PM   #11
dmills is offline dmills  United Kingdom
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If he is clipping a 24 bit ADC in a live situation he is going in WAY too hot, live you have probably got a noise floor at least 30dB above the ADC noise floor so going in aiming to peak 20+dB of so below full scale does not hurt you at all, knock 20dB of the input gain and add it with the monitor volume controls.

That is the problem, not controls and not compression.

Now the digital meters have much to answer for, time was the red lights came on at +6dBm or so and the desk (and recorders) clipped (not too objectionably) at +24dBm or so, digital metering tends to go red 6dB below really nasty clipping.

Regards, Dan.
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Old 26th January 2014, 12:22 AM   #12
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Quote:
Originally Posted by 1audio View Post
For what its worth the Pacific Microsonics is completely manual as are sme of the other pro interfaces.

I agree that the software UI on some cards is completely impenetrable for most people. I still have not figured out the EMU interface. Others are simpler. The ESI Juli@ is pretty straightforward. But it does not have level controls on the input so you need an external mike pre/mixer.

You can strap the PCM4222 demo board interface into specific modes but you may need to get the PC to match/understand the incoming stream.
Thanks! I see also that Ross Martin is making some interesting stuff:
Ross Martin Audio
They have a 4222 ADC that looks pretty good. Since I'm such a dummy with digital controls, it may be best for me to just recommend something like that. I also need a good instrumentation grade ADC and what they offer seems to be good. I'll check out Pacific Microsonics also, thanks!
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Old 26th January 2014, 12:23 AM   #13
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Thanks everyone for your replies. They've been very helpful! I appreciate your support.
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Old 26th January 2014, 12:33 AM   #14
1audio is offline 1audio  United States
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Last used price on a Pacific Microsonics was $24K. It was an example.

The Ross Martin stuff looks very interesting and really cheap for what it is.
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Old 26th January 2014, 12:26 PM   #15
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Quote:
Originally Posted by 1audio View Post

The Ross Martin stuff looks very interesting and really cheap for what it is.
Yeah, Ross's stuff is so cheap that it seems hardly worth building it myself. Just getting boards made would cost me about $150. Then another $100 for the box, add in parts and power supply and I'm well over $300.
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