Sick noise canceling phones durd!
But hang on.
You need to thank the noise canceling headphones that walked so you could run…
That’s a 1925 anti-distraction helmet.
The world’s first noise canceling headphones.
It was called ‘The Isolator’ and it worked by sheer brute force:
- Helmet made of solid wood that blocked 95% of noise
- Tiny eye holes to keep you focused on stuff right in front of you
- Oxygen supplied through a tube
Which begs the question, how do noise canceling headphones work today?
Flight from Zurich (ZRH) - Boston (BOS).
This dude Dr. Amar Bose is in his seat patiently gearing up for the long haul:
Ya, Dr. Bose couldn’t hear a thing when his plane got into the air.
It was impossible to listen to music over the plane noise.
So Bose starts designing a noise canceling headphone.
10 years later, he had it!
He releases this aviation headset specifically for pilots, military, and first class travelers:
But what’s the secret?
Basically noise canceling headphones listen while you do.
Look at a simple soundwave – like the rumble of an airplane – coming in:
That wave has a peak (top) and a trough (bottom).
When a noise canceling headphone detects this, it plays a new soundwave into your ear.
One that’s the exact opposite of the noise outside.
Inside the headphone, the two soundwaves peaks and troughs offset each other.
They cancel out:
And you’re left with silence to enjoy your sweet sweet tunes!
Henry & Dylan 🌈
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