electronics






 

Question by  thewee (35)

How do noise canceling speakers work?

 
+7

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.

 
+7

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.

 
+7

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.

 
+6

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.

 
+5

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.

 
+3

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.

 
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