I asked a friend to check out the following page and let me know what he thought. Instead of picking up that it was a review of a movie about how a low frequency could be used to hypnotize people, this is his response “It seems to me that the author is talking about some sort of audio device that turns your neighbors into some sort of mechanical robot type mechanism. Not sure what the bathtub scene was in reference to, maybe it was just to kill the person who heard the noises.”
I think I need a new friend.
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What is LFO ?
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I’m seeking info for sanctuary reverberation absorbsion material ( panels) and best placement.
There may be apps that do that. You can definitely find spectrum analyzers that will measure ultra low.
Is there an APP that can measure the ultra low frequency levels?