Term
White noise
A steady hissing sound like an untuned radio. People play it to mask sudden sounds around them.
Hello Sleep: The Science and Art of Overcoming Insomnia Without Medications, Jade Wu
Explained in
- Hello Sleep: The Science and Art of Overcoming Insomnia Without Medications, Jade Wu
- The Happiest Baby on the Block, Harvey Karp
A steady, monotonous sound with no melody, such as the hum of an engine. Karp recommends a low, rumbling white noise rather than a harsh hiss.