Assertion: cancelling headphone | /r/CapableOf | use microphone
Facets:
value: to record ambient noise
type: PURPOSE
Source sentences:
text: Active noise-cancelling headphones use a microphone, amplifier, and speaker to pick up, amplify, and play ambient noise in phase-reversed form; this to some extent cancels out unwanted noise from the environment without affecting the desired sound source, which is not picked up and reversed by the microphone.
text: They employ microphones that listen to outside noise and then cancel that noise by producing inverse sound waves.
text: Active noise-cancelling headphones use a microphone, amplifier, and speaker to pick up, amplify, and play ambient noise in phase-reversed form; this to some extent cancels out unwanted noise from the environment without affecting the desired sound source, which is not picked up and reversed by the microphone.
text: Noise-cancelling headphones use microphones to record ambient noise.