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.

Lees verder: Consumentenelektronica

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Picture of Olivier Smit

Olivier Smit

Oliver is een ervaren elektronica-ingenieur met kennis van PCB-ontwerp, analoge circuits, ingebedde systemen, en prototyping. Zijn diepgaande kennis omvat schematisch vastleggen, firmware-codering, simulatie, indeling, testen, en probleemoplossing. Oliver blinkt uit in het omzetten van projecten van concept naar massaproductie met behulp van zijn elektrische ontwerptalenten en mechanische vaardigheden.
Picture of Olivier Smit

Olivier Smit

Oliver is een ervaren elektronica-ingenieur met kennis van PCB-ontwerp, analoge circuits, ingebedde systemen, en prototyping. Zijn diepgaande kennis omvat schematisch vastleggen, firmware-codering, simulatie, indeling, testen, en probleemoplossing. Oliver blinkt uit in het omzetten van projecten van concept naar massaproductie met behulp van zijn elektrische ontwerptalenten en mechanische vaardigheden.

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