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Transcript

1. Earbuds add sound. So why does it get quieter?
2. Most people think it just plugs your ear tight. That's only half the story.
3. Pour a sand pile into a hole of the same shape, and the ground goes flat.
4. First, a tiny mic listens to the noise outside. Bose's new wired buds have two in each ear.
5. Then a chip makes the exact opposite sound: every peak becomes a dip, every dip a peak.
6. When the two meet inside your ear, they wipe each other out, especially low hums like plane engines.
7. So the silence is actually a sound: the same noise, flipped upside down.
8. Can yours block voices too? Comment 1 for yes, 2 for no!

Sources

1. Acoustical Society of America, Couche·Charette·Fuller, "Active Control of Automobile Cabin Noise with Advanced Speakers" (136th ASA Meeting, 1998)
2. UConn Physics, Gibson, "5.2 Constructive and Destructive Interference"
3. Bose, "Bose Unveils New Noise Cancelling Wired Earbuds" (2026-09-28)
4. audioXpress, "Bose Unveils USB-C Powered Noise Cancelling Wired Earbuds" (2026-09-28)
5. 9to5Google, "Bose launched wired, yes, wired, earbuds with ANC for $99" (2026-09-28)
6. Sony Help Guide (WH-CH710N), "The noise canceling effect is not sufficient"