Not at low frequencies. Think of a sub-woofer. The whole point is sound distribution. There is no such thing as "pointing" a sub-woofer anywhere. The sound will just wrap around.
In order to focus sound, you need high frequencies (ultrasound), but the high frequencies have a problem with non-linear absorption in the air. They will fizzle out into hot air.
A subwoofer is designed for sound enjoyment. You would not try to focus it. A low frequency has a greater penetrating wave. High frequencies have more beam spread.
Using a music speaker as an example to attempt to disprove sound focus abilities is not the way to go.
Focusing sound allows for further distance with the capability that is your intention.
Focused sound can cook, it can rupture, it can make you shit your pants. I've seen it first hand in the military.
You should look into what light can do. It can control you. Now put them together. We have no idea of what is capable today.
Not only would you not try to focus it, you could not focus it. And acoustic engineers know better. The sound wraps around all objects. High frequencies, with shorter wavelengths, can be focused and have a smaller spreading angle.
Acoustics are the same no matter the application. If you are talking about sound that cannot be heard by human ears, it is either infrasound (low frequency, large wavelength) or ultrasound (high frequency, small wavelength). The former cannot be focused except by very huge reflectors. The latter cannot propagate very far without being absorbed by the air.
When you give your examples, I think you are folding them in together. Ultrasound can cook (air absorption). Infrasound can cause physical distress. But discrete pointing is a problem for infrasound, inasmuch as it is wide beam.
Light color can affect mood, which is why there is feng shui, but I don't know what you mean by "control." None of this is news.
Technically, yes, but having nothing to do with what Hegseth was witnessing.
Low-frequency sound, by definition, is difficult to "direct" as the wavelength wants to diffract in all directions.
you can focus sound
Not at low frequencies. Think of a sub-woofer. The whole point is sound distribution. There is no such thing as "pointing" a sub-woofer anywhere. The sound will just wrap around.
In order to focus sound, you need high frequencies (ultrasound), but the high frequencies have a problem with non-linear absorption in the air. They will fizzle out into hot air.
A subwoofer is designed for sound enjoyment. You would not try to focus it. A low frequency has a greater penetrating wave. High frequencies have more beam spread.
Using a music speaker as an example to attempt to disprove sound focus abilities is not the way to go.
Focusing sound allows for further distance with the capability that is your intention.
Focused sound can cook, it can rupture, it can make you shit your pants. I've seen it first hand in the military.
You should look into what light can do. It can control you. Now put them together. We have no idea of what is capable today.
Not only would you not try to focus it, you could not focus it. And acoustic engineers know better. The sound wraps around all objects. High frequencies, with shorter wavelengths, can be focused and have a smaller spreading angle.
Acoustics are the same no matter the application. If you are talking about sound that cannot be heard by human ears, it is either infrasound (low frequency, large wavelength) or ultrasound (high frequency, small wavelength). The former cannot be focused except by very huge reflectors. The latter cannot propagate very far without being absorbed by the air.
When you give your examples, I think you are folding them in together. Ultrasound can cook (air absorption). Infrasound can cause physical distress. But discrete pointing is a problem for infrasound, inasmuch as it is wide beam.
Light color can affect mood, which is why there is feng shui, but I don't know what you mean by "control." None of this is news.