How Do Noise-Canceling Earbuds Work?
Using internal and external mics to generate inverted sound waves directly in your ear.
How Do Noise-Canceling Headphones Work?
Using destructive interference to 'erase' background sound waves.
How Do Noise-Canceling Microphones Actually Filter Noise?
Using a secondary microphone further back that captures ambient noise to subtract it.
How Do Noise-Canceling Microphones Work?
Using secondary mics to filter out background noise before the audio is transmitted.