As anything can be safe or not if we overdo it

the same goes for infrasound. I have been experimenting with them on myself and volunteers for many years

I'll just add since I started dealing with it "professionally" my mood has improved and even physically it is better.
This is due to many factors, someday when I have more time I will set up a topic on the electrode and a blog on the internet.... and I will share exactly my findings and achievements.
Back to the topic:
1. They are dangerous at high intensity, prolonged especially unconscious exposure to them. The frequency is also important - above 16Hz and up to about 25Hz , depends on the person but mostly they either lead to hyperactivity and neurosis or cause depression and anxiety.
The trumpets of Jericho in ancient times are said to have crushed the defensive wall.... and this may be true because a sizable amount of dB combined with the right frequency can kill, glass shatter it and walls crumble.
2 Infrasound 1-15Hz generated in the right way is beneficial to health. They can be used to influence and manipulate the frequency of brain waves putting a person in a state ranging from hypnosis, deep relaxation, energy stimulation and even to euphoria and erotic arousal."
Infrasound "administered" in the right way can be used to perform a therapeutic physical massage of the body at the cellular level!!! stimulate blood flow in the capillaries, and thus...? - health itself... because a well-oxygenated and nourished body at the cellular level means excellent well-being and health..there are quite a few scientific facts for this...
3. You can build appropriate generators and transducers to emit infrasound.
I have personally built more than a dozen devices of this type, however, do not ask for details of the type of diagram, etc. because this type of information I do not share publicly and to everyone. Because in the wrong hands such equipment can do more harm than good.
4. There are also "natural" infrasound generators, one probably the most interesting and effective is the Australian tribal musical instrument DIDGERIDOO which can put you in a hypnotic trance and churinga also Australian subject. Large bass drums with a diameter of 100 cm and more also generate infrasound and of quite high intensity.
Very interested, I invite you to privately but be warned, I can write back with a delay... because I travel a lot and work...
greetings to all fans of infrasound....
Added after 4 [minutes]: Add one more thing, the inspiration for the rotary woofer was the Australian Churinga...