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In this article, the presenter would be explaining the active cancellation technology which is used in smartphones and high-end headphones.
The following topics have been covered in the article:
- What is Active Noise Cancellation and how it works?
- Different types of Active Noise Cancellation (Feed-Forward, Feedback and Hybrid ANC)
Content Summary
What is Active Noise Cancellation (ANC)?
Feed-forward ANC
Feedback ANC
Hybrid ANC
What is Active Noise Cancellation (ANC)?
In the active noise cancellation, the miniature microphone near the ear cups detects the background noise, and using the electronic circuit (controller) 180 degree inverted signal (Anti-Noise Signal) is generated.
This Anti-Noise signal is mixed with the (Music + Noise ) signal, which effectively cancels out the noise signal and the listener can enjoy the noise-free music.
As these ANC headphones are battery operated and involve a high-end engineering design, they are bulky as well as quite expensive (compared to the passive headphones. )
