Voice controlled music socket circuit using SL517A

] As shown in the figure, the circuit includes an acoustic sensor, a voice-activated integrated circuit, a relay control circuit, a music sounding circuit and an AC buck rectifier circuit, etc. The sound control integrated circuit in the circuit uses SL517A, which contains a high-gain amplifier, a bistable flip-flop and a buffered output stage. There are two types of packaging: dual in-line and black ointment. Its internal functional block diagram is shown in the figure below.