Na'urar firikwensin ƙararrawa yawanci suna aiki ta hanyar gano canje-canje na jiki kamar motsi, canjin yanayi, sautuna, da sauransu. Lokacin da firikwensin ya gano canji, zai aika sigina zuwa mai sarrafawa, kuma mai sarrafawa zai sarrafa siginar bisa ga ƙayyadaddun ƙa'idodi, da fin. ...
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