How do noise canceling speakers work?

Answer by  Ondaatje (71)

Essentially, the speakers pick up the sound they want to cancel with a microphone, then put out a sound wave that's the opposite of that noise to cancel it out.

Answer by  pqman17 (72)

They work by having a microphone that takes in background noise, inverts the signal and then adds it to the original in order to filter out the noise.

Answer by  PeterA (21)

Some use insulation to cancel outside noise, others use microphones to overlap an inverse wave of the outside noise on the audio, canceling the noise.

Answer by  Amber40 (24961)

Well they basically use noise to contract the ambient noise around you. A frequencies is played through the speaker essentially canceling out the unwanted sound waves.

Answer by  NerdyTech (137)

They work using appropriate noise filters in order to divide the usefull electronic signal from the noise disturbance. A filter is an electric device designed to do as I described.

Answer by  mmonshausen (114)

One possibility is that the speakers record the noise of of the environment and create an anti-noise, which overlaps the noise and therefore remove it to the user of the speakers.