Fundamentals of Ambient Noise Cancellation for Headphones and Handsets

摘要

Silence is a precious commodity. Unfortunately we cannot control it. All of us have experienced trying to make a mobile phone call from a noisy street, crowded restaurant or train station where the background noise can make it impossible to hear the incoming call. There are numerous noise cancelling solutions that filter and improve the voice signal from the microphone and create a high quality transmission from you to the other person on the call. But receiving a call in a noisy place can make the voice of the person calling you unintelligible.