It seems like a tapping machine on a carpeted floor would make essentially no noise at frequencies above about 100Hz, whereas it would make a lot of noise on a manufactured hardwood floor. Even when the hardwood floor is under-layer with a couple of inches of sound absorbent material covered with two layers of wonderboard, I would assume that tapping machines and footfalls would transmit much more midrange-frequency sound to to the living space below. Some acoustics engineers claim that tapping-machine measurements of the amount of transmitted sound with carpets (with under-payments) and manufactured wood (with acoustical insulation) are within a couple of dB. This seems unlikely to me, so I wonder whether tapping machines really generate sounds with a similar spectrum as footfalls, furniture scraping etc.
There are some conference papers as well as a thesis on that subject available here and elswhere on the web by googling for it.
Footfall noise depends on the weight og the walker, if there are shoes on or not. There is better correlation between shoeless walking impulses and the impact ball.
Seems like you mention drum sound along with the impact noise. The latter is much more studied. Thin parquet on thin elastic layers are noisy both with a tapping machine and walking on it with hard shoes.
One link to an article on the subject: https://hal.archives-ouvertes.fr/hal-01509352/document
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