I want to read waves with an electret consender microphone that are slower than the speed of sound, and I figure it would make those waves easier to identify if I could process out all waves moving around the speed of sound (give or take maybe 20 m/s).

UPDATE: I read that someone did this by "k-space filtering". Is there an easy way to learn how to do this? I'm looking for an acoustic application but most stuff I can find on the internet has to do with MRIs.

  • $\begingroup$ How can your microphone measure speed? $\endgroup$ – fibonatic Aug 16 '15 at 10:35
  • $\begingroup$ That's kind of my question. I know in an experiment involving a similar goal the experimenters were able to remove all waves travelling faster than that cutoff, but I'm not sure how. @fibonatic $\endgroup$ – Jack Lynch Aug 16 '15 at 15:51
  • $\begingroup$ I changed my question to make it much clearer, I hope. $\endgroup$ – Jack Lynch Aug 16 '15 at 16:04
  • $\begingroup$ Could you elaborate a little bit more on the experimental setup that you want to use? $\endgroup$ – M529 May 5 '16 at 8:46

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