What’s your vote for the most ridiculous, overpriced, and useless tweak?

«The wavelengths of sound frequencies audible to the human ear (20 Hz–20 kHz) are thus between approximately 17 m and 17 mm, respectively.»

my room is only very short of the 17 meter... How that 20 hz audible frequencies fit in it? it is here that wavelet analysis help a little no?

For your popquiz, I dont know where it is and you will be forced to repeat that for me...My best to you...

Longer waves either acoustic or electromagnetic wrap themselves around the boundaries of the room. That’s how you get a 25,000 mile EM wave in the room.

Pop quiz  🤗 If the real Schumann frequency wavelength is 25,000 miles how does the Schumann frequency generator produce a frequency of 7.8 Hz in the room? Hint - the length of the antenna required is proportional to the wavelength.

A prize to the winner of the pop quiz. 🤗