100脚STM32+SRAM原理图和PCB,附FSMC驱动代码-100 feet STM32+ SRAM schematic and PCB, with FSMC driver code

通过ADC采样获得语音信号，存储在SRAM中，进行频谱搬移实现变声，用DAC输出(Through ADC sampling to obtain the voice signal, stored in the SRAM, frequency shift to achieve sound, DAC output)