How do you design a noise cancelling circuit?

I mean, headphones or ear buds are capable of reducing the ambient background noise. Can it realize by circuit design or other approaches?

PCB Design
October 11, 2023

There are two general solutions to cancellation processes.

The simplest is to use a feedback loop with a microphone inside the headphones. The feedback attempts to minimize the sound level at the microphone by producing sound that cancels ambient.
The second uses digital sampling for repetitive sounds like engine noise and produces a cancelling sound.

Oliver Smith

Oliver is an experienced electronics engineer skilled in PCB design, analog circuits, embedded systems, and prototyping. His deep knowledge spans schematic capture, firmware coding, simulation, layout, testing, and troubleshooting. Oliver excels at taking projects from concept to mass production using his electrical design talents and mechanical aptitude.

Oliver Smith

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