Active Noise Cancellation: What is it and How does it works
You would have many times come across claims by headphone companies "this headphone or earphone have active noise cancellation" or by smartphone companies "this phone has dual microphone for active noise cancellation" or even by premium car manufacturers that their car sports active wind and road noise cancellation. Question would arise in your minds that what is this active noise cancellation; here you will find out !! What is this active noise cancellation ? Active noise control (ANC), also known as noise cancellation , or active noise reduction (ANR), is a method for reducing unwanted sound by the addition of a second sound specifically designed to cancel the first. It's based on the principal of superposition of sound waves. It is majorly used in Headphones, Smartphones and Cars, not to mention in Music studios. Noise cancellation in Headphones and Earphones Noise-cancelling headphones are headphones that reduce unwanted ambient...