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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?

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.

Read More: Consumer Electronics

#PCB Design

Picture of Oliver Smith

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.
Picture of Oliver Smith

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.

What Others Are Asking

Why did the SMT pad fall off easily when soldering the PCB boards?

I am a buyer in a telecom company. Recently, an important order of SMT PCBA is delayed due to insophiscated production of a supplier. I am thinking about replace it and just very puzzled about how did their SMT pad fall off easily when soldering the PCB boards. That slows down the whole process.

Is it OK to bend a VIA in a Flex PBC?

On a Flex Printed Circuit (FPC) made out of Kapton polyimide, will anything bad happen if I put a VIA in a part of the FPC that has to bend? VIA size: 0.2 mm hole diameter in 0.4 mm copper diameter. FPC bend radius: 0.7 mm. Kapton thickness: 0.2 mm. Copper weight: either 2 oz or 1 oz (I haven’t decided yet)

Read Detailed Advice From Blog Articles