I now have a curriculum design should make a mixer with stm32f103, basic button led matrix matrix and fix the problem is I don't understand how to programming with SDIO stm32 can read to the sd card. The wav document
And then through the stm32 built-in 2 DAC and external a loudspeaker pronunciation

CodePudding user response:

Ordinary dac frequency can not meet the need of audio frequency