Acoustic signal processing with BBB

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antonio....@gmail.com

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Feb 18, 2015, 7:18:48 AM2/18/15
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Hello, I have to acquire and process acoustic signals of about 7-12Hz (very low frequencies). Additionally, I might have to get 1kHz signals too, but the first range will be the most important. I intend to get those signals through a MEM microphone (so it can get those frequencies better), and since most Soundcards discard those low frequencies (and acquisition boards are pretty expensive), I was considering if this could be done with a BBB. Both possibilities I am considering include processing the signals inside the BBB (spectral analysis, storage and extract the data to a PC) or either just acquiring the signals and exporting them to the computer directly without modifying them to be processed there later.

Would that be doable with this board?

TJF

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Feb 19, 2015, 12:00:12 PM2/19/15
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BBB has seven analog inputs (0 to 1V8, max. 200 kHz, header P9, pin 33 to 40). Check out the examples of libpruio. Especially oszi should be interesting.

BR
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