Noise cancellation works best for:

  1. sudden, high-frequency sounds
  2. speech only
  3. music only
  4. steady, low-frequency sounds such as engine hum
Answer

D) steady, low-frequency sounds such as engine hum

Predictable, long-wavelength noise is easier to cancel. SLO P-11-D-09 · Understanding

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