An electronic device includes a host and an earphone. The host includes a application module, the earphone includes at least one speaker, and at least one vibrator. The host generates a first vibration signal according to an original audio signal from the application module, and sends the original audio signal and the first vibration signal to the earphone. The earphone generates a second vibration signal according to the original audio signal, sends the first vibration signal and the second vibration signal to the at least one vibrator, and sends the original audio signal to the at least one earphone speaker. The electronic device may also generate audio signals according to an original vibration signal from the application module.