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There are traffic sounds ascending the hill on which I live. Might a "white noise" generator inside my small studio apartment have impact on this type of noise, or is noise impact on individuals simply too subjective for an answer?

  • sound.stackexchange.com might know more about this than here. Physics would say yes, at an absolutely benign margin. What a WNG will do for you is reduce your ability to perceive and decipher sounds. If your brain can't understand what it is, you ignore it. You are a victim of a natural amphitheater, buy some really thick curtains. – Mazura Oct 2 '14 at 6:11
  • reduce objectively? not unless the noise generator specifically counters the outside noise. reduce subjectively? yes. – ratchet freak Oct 2 '14 at 11:37
  • You can always try (without actually buying a dedicated device); there are many free 'white noise generator' websites/apps you can play from your computer/phone/tablet. Just make sure you have some half decent speakers hooked up. – gregmac Oct 2 '14 at 14:31
  • I use "sound cancelling headphones". They work wonders on traffic noise. Spend enough money to get decent ones. – Wayfaring Stranger Apr 19 '18 at 19:01
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A white noise generator is like spraying perfume to cover a nasty smell. The smell is still there, just the perfume is stronger. The nastier the smell, the stronger the perfume needs to be to cover.

A white noise generator produces noise that our brain quickly ignores. If this noise is louder that the outside noise, then it will mask it. But a word of warning, if you have to turn the white noise generator up enough to cover loud outside sounds you might risk your hearing. Even though our brain doesn't 'hear' the white noise, our ears still do. And a constant loud noise will produce hearing loss over time.

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Brownian aka Brown noise, with its lower frequency emphasis, might do the trick. It works for me but I don't get any serious traffic noise (mostly 100+ yards away). I use an old MP3 player and created a 4-hour track that repeats. GoldWave and Audacity can generate Brown noise easily. Another option is white noise with bass boosted. Traffic noise tends to have lower registers, so regular white noise is too "hissy" to mask enough of it. Pink noise is sort of a cross between White and Brown - try that also.

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