mysterious_signal_08_night_microphone.wav

I left my Olympus LS-10 recording at high sensitivity throughout one night. I caught one interesting sound. It is between the two clicks and it sounds quite spooky. It reminds me of EVP (electronic voice phenomena) experiments. The clicks themselves are the sound of cooling heater pipes and are not strange by themselves. NOTE1: I absolutely do not believe the sound has a paranormal explanation, but the effect is eerie. If you know what it might be, leave a comment. NOTE2: This was inspired by the "electronic scrying" workshop given by Martin Howse in Rotterdam.