White noise is a random sound that some people find relaxing. Others find it helps them fall asleep.
Download y one of these free white noise MP3 files to your phone, tablet, or laptop. Play the sounds to relax, fall asleeep, or to obscure your private conversations in public places. Think of the latter as “aural obfuscation” in an effort to cloak your speech. Perfect? No. Useful? Sometimes yes.
- 10 minutes 6.65 MB
- 30 minutes 19.6 MB
- 1 hour 39.3 MB
If two friends, Alice & Bob, have these files on their cell phones or laptops, they should play different white noise files at the same time in an attempt to make it a bit harder for Eve or Mallory to figure out what they’re they are saying. YMMV
White noise by definition is a random signal having equal intensity at different frequencies. That’s the short version. You can read lots more about white noise on Wikipedia. Note that it has more to do with white light compared to white heat (with apologies to Velvet Underground).
Compare white noise to pink noise.