408 Hz Sine Tone Amplitude 1

1 hour of 408 Hz Sine Tone Amplitude 1

[sheltoncesar]

Frequency to kill Ascaris lumbricoides.

[BrianLampton-gb]

whats the signifigance of 408 hz? i mean an hour of it? lol it happens to be the same frequency as the hum heard at the colorado ranch in "Beyond Skinwalker Ranch" S1E3. the tone does have that effect of surrounding you at low volume.

[onelove]

Soñe con este numero q tenia q escucharlo, para q serviria?

[JBArtisan]

I have a strange connection with this number