AdvertisementInfrasound is the acoustic sound waves emitted below the normal human hearing level, and while higher frequency noises are louder close to the source of things like nuclear explosions and rocket launches, low-frequency infrasound travels further. It covers sounds below 20 Hz and down as far as 0.001 Hz. Infrasound, also known as low-frequency sound, describes sound waves with a frequency below the lower limit of human audibility. A SpaceX Falcon 9 rocket lifts off from Cape Canaveral, Florida, on November 11, 2019. After their initial blast, space rockets shoot away from the Earth with rumbles in infrasound, soundwaves that can travel thousands of miles through the air and the ground.
Signals in the audible range describe the blast operation by the relatively small band of muscle groups known as cold-frequency veterans.
( z0 describe :ARG0 ( z1 signal :ARG1-of ( z2 range :ARG3 ( z3 hear :ARG1-of ( z4 possible ) ) ) ) :ARG1 ( z5 operate :ARG0 ( z6 band :cxnsistof ( z7 group :ARG1-of ( z8 know :ARG2 ( z9 veteran :mod ( z10 frequency :ARG1-of ( z11 cold ) ) ) ) :cxnsistof ( z12 muscle ) ) :mod ( z13 small :ARG2-of ( z14 relative ) ) ) :ARG1 ( z15 blast ) ) )
(z0 / describe-01
    :ARG0 (z1 / signal-07
              :ARG1-of (z2 / range-01
                           :ARG3 (z3 / hear-01
                                     :ARG1-of (z4 / possible-01))))
    :ARG1 (z5 / operate-01
              :ARG0 (z6 / band
                        :consist-of (z7 / group
                                        :ARG1-of (z8 / know-02
                                                     :ARG2 (z9 / veteran
                                                               :mod (z10 / frequency
                                                                         :ARG1-of (z11 / cold-01))))
                                        :consist-of (z12 / muscle))
                        :mod (z13 / small
                                  :ARG2-of (z14 / relative-05)))
              :ARG1 (z15 / blast-05)))
Signals in the audible range describe the blast operation by the relatively small band of muscle groups known as cold - frequency veterans .
z3 :ARG1-of z4
z2 :ARG3 z3
z1 :ARG1-of z2
z0 :ARG0 z1
z5 :ARG1 z15
z0 :ARG1 z5
z13 :ARG2-of z14
z6 :mod z13
z5 :ARG0 z6
z7 :consist-of z12
z6 :consist-of z7
z7 :ARG1-of z8
z10 :ARG1-of z11
z9 :mod z10
z8 :ARG2 z9