  We have recorded a dataset of 24 centimeter-sized meteoroids detected
simultaneously by video and infrasound to critically examine the ReVelle [1974]
weak shock meteor infrasound model. We find that the effect of gravity wave
perturbations to the wind field and updated absorption coefficients in the
linear regime on the initial value of the blast radius (R0), which is the
strongly non-linear zone of shock propagation near the body and corresponds to
energy deposition per path length, is relatively small. Using optical
photometry for ground-truth for energy deposition, we find that the ReVelle
model accurately predicts blast radii from infrasound periods ({\tau}), but
systematically under-predicts R0 using pressure amplitude. If the weak shock to
linear propagation distortion distance is adjusted as part of the modelling
process we are able to self-consistently fit a single blast radius value for
amplitude and period. In this case, the distortion distance is always much less
(usually just a few percent) than the value of 10 percent assumed in the
ReVelle model. Our study shows that fragmentation is an important process even
for centimeter sized meteoroids, implying that R0, while a good measure of
energy deposition by the meteoroid, is not a reliable means of obtaining the
meteoroid mass. We derived an empirical period-blast radius relation
appropriate to cm sized meteoroids. Our observations suggest that meteors
having blast radii as small as 1m are detectable infrasonically at the ground,
an order of magnitude smaller than previously considered.
