The compressor in your garage is almost certainly a reciprocating compressor (oscillating motion = very loud), while the hyperloop uses an axial compressor (pur

The compressor in your garage is almost certainly a reciprocating compressor (oscillating motion = very loud), while the hyperloop uses an axial compressor (pure rotary motion = much quieter). The same sound absorbing layers and vibration isolation technology that's used on jet planes could also be used if needed.