There has been a lot of research into non-lethal warfare using this technology. The military funded this research and law enforcement is embracing its use domestically. I'm working from memory here so the exact numbers may be incorrect but the concepts are real. Somewhere around 8 cycles the human body is rendered uncontrolable. 4 cycles and the mind enters the nightmare state. Of course, this was when using extreme amplitudes, however, I doubt there is any potential use to enhance our listening pleasures.
Question About Low Frequency Sounds
I came across the following info on the internet and I can't figure out whether it makes any sense or not.
Does anybody know anything about this? If true, it's implications on music reproduction could be profound.
Sound frequencies below 20Hz (even up to 30Hz) can directly affect states of consciousness. For those of you who don't know, our brains vibrate at different frequencies depending on the level of awareness (consciousness) we are in. Consciousness lies on a continuum. The scale is as follows:
.5-3Hz - Delta. This is the sleep state.
4-7Hz - Theta. The meditative/hypnotic state.
8-12Hz - Alpha. The "relaxed alert" state.
13-20Hz - Beta. Normal wakeful consciousness.
20-32Hz - High beta. Manic states.
Does anybody know anything about this? If true, it's implications on music reproduction could be profound.