WONDER #1480: How Do Noise-Canceling Headphones Work?
Question 1 of 3
What does ANC stand for?
- active noise control
- passive noise control
- ambient noise control
- a noisy controller
Question 2 of 3
Who pioneered active noise control technology?
Question 3 of 3
Sound waves with frequencies exactly how many degrees out of phase with each other will cancel each other out?
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