How Sound Travels Through Phones

Sound (a mechanical wave) is converted to electrical signals for transmission:

1. Microphone – voice vibrates diaphragm, generating weak electrical signal.
2. Amplifier – boosts signal strength.
3. Speaker – amplified current drives electromagnet, vibrating diaphragm to recreate sound waves.
4. Playback – sound emitted through earpiece or speakerphone.

Quality depends on microphone/speaker specs, acoustics, and network type.