How Does A Bluetooth Headset Work

The headset works by winding the left and right magnetic cores with two small iron sheets that vibrate with the strength of the magnetism. Because the coil is connected to the audio output port, the earphone receives the signal from the media player or receiver and converts it into audible sound waves using speakers close to the ear.

The impedance of the headset is the sum of the dc resistance of the coil and the inductive reactance of the coil. The impedance of both civilian and professional headphones is generally less than 100 ω; The sensitivity of the earphone is the sound pressure level generated by the earphone coupled to the simulated ear (dummy head) when 1mW electrical power is applied to the earphone. The power of 1mW is calculated based on the standard impedance of the earphone at 1000Hz frequency.

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