I like to experiment with microwave Doppler for motions such as breathing. I need to see frequencies less than a few Hz.
How low will the HiFiBerry AtoD go?
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5 comments
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HiFiBerry team Are you looking for an ADC or a DAC? While in general the DAC works down to 0 Hz, it is not optimized for this use case and the frequency response might not be optimal in this frequency range.
Best regards
Daniel -
Walter Clark I'd like to know how low an audio frequency can get through your AtoD and then into my spectrum analyzer. I'm looking for an ADC that has a rather large front end capacitor or a direct connection to the digitizer.
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Anton Hi Walter,
we do not have any ADC, only DACs. Sorry, I guess we can't help yo further.
Best wishes,
Anton
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Walter Clark Anton,
Oh sorry. I thought it was a sound card replacement. Maybe that's in your future.
But, I have another project which does need only a DAC. That is a small, no monitor, no keyboard, no mouse Internet radio. Do you know of an app which is more reliable than VLC ? -
Anton Yes, all our boards have "only" outputs: The different versions of the DAC+ have analogue out, the Digi+ digital out, and the Amp+ has already an amplifier, so you can connect passive speakers directly.
For the internet radio, probably Volumio would be a nice solution for you. You can install it completely configured using our installer (http://support.hifiberry.com/hc/en-us/articles/205389831-HiFiBerry-installer). You can control it via a web browser or an app in the same wifi/LAN network, no need for any keyboard or monitor.
Similar like Volumio is RuneAudio, both should work fine.
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