What microphone is made of
Turns sound vibrations into an electrical signal.
- Diaphragm — has part. The diaphragm vibrates under a sound wave.
- Analog-to-digital converter — has part. Digital microphones contain an ADC.
- Capacitance — uses. In a smartphone’s MEMS microphone, the vibrations of the diaphragm change the capacitance between it and a fixed plate.
- Piezoelectric effect — uses. Piezo microphones turn sound pressure into voltage.
- MEMS — uses. Smartphone microphones are MEMS devices.
- Sound wave — uses. It picks up sound waves.
- Carbon — is made of. A carbon microphone uses carbon granules.
- Copper — is made of. The wires are copper.