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When running at its maximum sample rate (192kHz), does it actually allow recording of frequencies up to its nyquist frequency (96kHz)? Or does it have a lowpass filter that cuts off signals well below this frequency? I know that some sound cards that advertise 192kHz, actually have no more bandwidth than a 96kHz sample rate sound card (maximum possible frequency being 48kHz), due to a lowpass filter, and sometimes even less than that (such as a 20kHz maximum).
However, some sound cards that advertise 192kHz, actually do what they promise. They truly do allow all frequencies up to 96kHz (low pass filter is only used to prevent signals over 96kHz from being digitized, which would otherwise produce aliasing, and it's a very sharp filter that cuts off very close to the nyquist frequency, to make sure that it doesn't significantly decrease the maximum usable frequency).
Which category does the Behringer U-PHORIA UMC204HD fall into? I found it here https://www.bhphotovideo.com/c/product/1113599-REG/behringer_umc204hd_audiophile_2x4_2...t_192_khz.html and it is one of the cheapest 192kHz sample rate sound cards I've ever seen. However, I don't want to waste my money buying a sound card that doesn't allow the maximum possible range of frequencies for its sample rate.
If anybody has one of these, please let me know. Thanks in advance.
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For some reason, Behringer seem to getting worse and worse at releasing detailed tech specs - or even routing schematics - compared to their earlier equipment documentation?
The UMC204HD is in competition with units like the Focusrite Scarlett - which also has a 192KHz sampling rate option.
However their mic preamp frequency response is only specified to 20KHz - even for 192KHz sampling - so I would be very surprised if the Behringer is any better .... -
It's suspicious that Behringer is releasing no tech specs on this device. I would avoid it and tell Behringer exactly why.
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I was hoping that one of you guys on these forums had already bought one, and had tested its inputs with a function generator, using sinewave signals of various frequencies all the way up to 96kHz, in order to test how high of a frequency it can input.
However, given the very few responses on my thread, and given that none of them are from people who have actually bought a UMC204HD (let alone tested it with a function generator) it seems that I'm going to have to be the one to be the one to buy it and test it (which I hate to have to do, since I don't want to waste money, but it seems that you guys aren't helping me out here, so I'm forced to test it on my own). -
You might find someone on a specialised audio forum who will have access to a suitable sig gen..and will have made the tests you describe...although as its only a cheapo Behringer unit we're talking about, I have my doubts...I think you're unlikely to find someone here - but you never know!Originally Posted by Videogamer555
It's still pretty rare to find ultrasonic mic preamp specs outside specialised audio kit - like time expansion bat detectors, for example.
The Korg MR1 recorder (now discontinued) had an extended response to 100KHz in 1 bit mode, and extended to 40KHz at higher bit rate conventional sample modes.
My own Sony M10 recorder has an upper cut off frequency of 40KhHz @96KHz sampling rate -- but only on the line input. The mic preamps are still only specified to 20KHz, even with 96KHz 24bit sampling.
As I say, I'll be very surprised if the Behringer does have an extended mic preamp response..... Be interesting to see what you find. -
Originally Posted by pippas
You might find someone on a specialised audio forum who will have access to a suitable sig gen..and will have made the tests you describe...although as its only a cheapo Behringer unit we're talking about, I have my doubts...I think you're unlikely to find someone here - but you never know!Originally Posted by Videogamer555
It's still pretty rare to find ultrasonic mic preamp specs outside specialised audio kit - like time expansion bat detectors, for example.
The Korg MR1 recorder (now discontinued) had an extended response to 100KHz in 1 bit mode, and extended to 40KHz at higher bit rate conventional sample modes.
My own Sony M10 recorder has an upper cut off frequency of 40KhHz @96KHz sampling rate -- but only on the line input. The mic preamps are still only specified to 20KHz, even with 96KHz 24bit sampling.
As I say, I'll be very surprised if the Behringer does have an extended mic preamp response..... Be interesting to see what you find.
Even so, those bat detectors still require components to build. This means that the ultrasound sensor itself needed to exist for them to use it in their device. This means that somewhere there exists an OTS (off the shelf) ultrasound detector that can go up to 100kHz, that the people at Korg bought and used in manufacturing their bat detector (I doubt that they were a big enough company to manufacture critical components like this themselves, so I doubt that the ultrasound microphone itself was created "in house" by Korg).
And by the way, I do intend to use Line In on the sound card, not Mic In (as that often has additional filtering stages) I don't need the pre-amp found in the Mic In circuit, as I plan to apply gain after digitization anyway (signal_out(n) = signal_in(n) * 100) in my own software. I just need a way of getting the signal INTO the computer to start with. And fortunately the U-PHORIA device that I'm talking about getting appears to have no inputs labeled Mic. They are all labeled as Line. -
Why don't you ask the people who designed it?Originally Posted by Videogamer555
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