Part 1 of this FAQ looked at the basic concept of active noise cancellation, how it might be implemented in principle using analog circuitry, and the harsh reality of actually providing the ANC function. Part 2 looks at modern ANC systems and how they function, as well as their practical issues. Q: Is ANC using […]
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Active noise cancellation, Part 1: Concept and principles
Electrical noise, whether due to internal circuit external signal sources, is an ever-present factor which ripples through many aspects of the engineer’s design challenge. But there is another kind of noise – namely audio/ acoustic noise – which affects consumers and the individuals, and whose affect engineers are striving to reduce. This noise can affect […]
