Smart car speech output circuit as shown.Wherein, VDDH reference voltage, VSS is the system's analog ground. The audio signal to the DAC by SPCE061A output circuit 9 pin end, by adjusting the volume potentiometer R9 end integrated audio amplifier sent SPY0030, amplified by the audio, the audio signal is output from SPY0030 J2 port via an external speaker to play sounds.
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