POS TERMINAL, POS SYSTEM AND PAYMENT METHOD THEREFOR

A POS terminal (1), a POS system and a payment method therefor. The POS system comprises an electronic device (2) and the POS terminal (1), wherein the electronic device (2) comprises a payment data generation module (21), a payment data processing module (22) and a payment data sending module (23), the payment data generation module (21) being electrically connected to the payment data sending module (23) through the payment data processing module (22). The POS terminal (1) comprises a sound wave receiving module (11), a sound wave filtering module (12), a sound wave amplification module (13), a sound wave sampling module (14), a signal parsing module (15) and a payment module (16), wherein the sound wave receiving module (11) is electrically connected to the sound wave filtering module (12), the sound wave filtering module (12) is electrically connected to the sound wave amplification module (13), the sound wave amplification module (13) is electrically connected to the sound wave sampling module (14), the