3 ms·
Presumably the pressure wave is maintained by a continuous array of big-ass subwoofers along the whole length of the tube - If this is the case, then keeping th
by w_t_payne 13y ago
Presumably the pressure wave is maintained by a continuous array of big-ass subwoofers along the whole length of the tube - If this is the case, then keeping the noise pollution down will be a bit of a challenge - unless some sort of active-noise cancellation technology is used for the outside.
Hmmm... This should not be too tricky, since you are generating the original signal yourself, but if one of the exterior noise-cancellation speakers breaks down - it's gonna be LOUD.
- benjamincburns 13y agoAn array of pulse jets! That's not very solar friendly, but it is very loud!
- hotpockets 13y agoPerhaps the frequencies are below the audible spectrum?
- redwood 13y agoThe whole idea of a wave guide is to trap the energy of the wave inside, so presumably a lot of it would not escape.
- joshontheweb 13y agoWouldn't these sound waves be below the human hearing threshold (20hz)?