sai_peripheral
Overview
The SAI Demo application demonstrates complicated digital audio playback and record case. The demo provide these features below:
Duplex audio transfer, record and playback at same time.
Playback a 250 Hz sine wave data generated by CMSIS-DSP library. Also compute the fundamental frequency using Fast Fourier Transform with CMSIS-DSP library.
Record a 5 seconds audio to sdcard with a FatFs system. After record, playback it. This feature may only existed in platform which support sdhc.