Air conditioner
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0Air conditioner
Air Conditioner is the soundscape of a typical split-system home AC: a steady broadband fan noise around 45 to 55 dB, occasional thermostat clicks when the compressor cycles, the barely audible ff of airflow through the louvres. Spectrally it sits between pink and brown noise with a slight mid-band emphasis. One of the most widespread domestic white noises of the 21st century, especially in hot regions where the AC runs six to ten hours a day.
In sleep research, the AC is more than a masker; it is an active sleep regulator. Okamoto-Mizuno and Mizuno (Journal of Physiological Anthropology, 2012) showed in a review that a bedroom temperature of 17 to 19°C significantly improves slow-wave sleep compared to 24°C. The sound of an AC, beyond its acoustic masking, usually accompanies an optimal temperature environment, so you get a double factor for good sleep. This is part of why many people literally can't fall asleep in a hotel room without a running AC, even when it is cool outside.
Use this track for sleep (especially in hot seasons without AC, or in winter by psychological association), to mask neighbours with an even broadband curtain, for daytime power naps, for people who grew up in hot climates and feel an acoustic homesickness, and as a reference in sound design. Pairs with White Noise, Pink Noise and Floor Fan (a relative). An excellent sleep background.
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ReduxSound v1.0.0
Ambient sound mixer for relaxation and focus