Power drill
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0Power drill
Power Drill is the sonic pattern of a domestic electric or hammer drill: a high-frequency piercing motor whine (3 to 8 kHz), periodic pauses and restarts, the occasional low-frequency thump as the bit bites into dense material (concrete, brick). Source loudness is normally 95 to 105 dB, reduced in our recording to a background 55 to 60 dB. One of the most domestic-stressful sounds of urban life: 80% of apartment dwellers in WHO surveys (Environmental Noise Guidelines, 2018) named a neighbour's drill as the most irritating household noise.
Psychoacoustically the drill is a textbook high-spectral-roughness signal. The tone isn't pure but modulated by gearbox tremor, and that tremor falls in the 30 to 150 Hz modulating range that the brain automatically reads as danger (Daniel and Weber, Journal of the Acoustical Society of America, 1997). That is why even at moderate loudness the drill feels far sharper than a uniform broadband noise at the same volume.
Use this track sparingly: for writing scenes of renovation or neighbour conflict, for podcasts about urban noise and noise regulation, for sound design, or for contrast therapy (after 30 seconds of drill, switch to forest or rain). Pairs with Construction Site, Lawn Mowing and City Noise. Categorically not for sleep, meditation, concentration, conversations or meetings in the room; it is an irritant by physiological function.
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ReduxSound v1.0.0
Ambient sound mixer for relaxation and focus