Why don't noise-cancelling headphones cancel the music you're listening to?

  1. the music is polarized
  2. the circuit only generates anti-noise for the outside sound picked up by the microphone
  3. music is a different kind of wave
  4. music travels faster
Answer

B) the circuit only generates anti-noise for the outside sound picked up by the microphone

The music signal is added separately. SLO P-11-D-09 · Understanding

Physics MCQ · More Superposition, Stationary Waves and Beats MCQs · Practise