Mark Fischer wrote:
> I know I can hear them-- so why can't the microphone,
> which can hear everything else?
Have you analysed your recording with a spectrogram? Have you tried
replaying your recording at, say, two or four times its original speed?
Or perhaps it's something as simple as your microphone's inability to
detect such low frequencies at all.
I'm just a lurker, and certainly not an expert, but these are the sorts
of things I would try, just to see if anything at all is being recorded.
Whatever it is, though, this is an interesting phenomenon.
Ray Mansell
"While a picture is worth a thousand words, a
sound is worth a thousand pictures." R. Murray Schafer via Bernie Krause
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