The audio passthrough project

A "passthrough" can be viewed as the audio processing equivalent of a "hello world" program. In this section we will program the Nucleo to simply pass the audio samples from the microphone to the DAC.

Using the CubeMX software, we will first update the configuration of the microcontroller. We will then guide you through the wiring and, finally, we will program our passthrough using the SW4STM32 software.

Highlighted boxes, as shown below, specify a task for which you need to find out the appropriate solution and implementation.

TASK: This is a task for you!

A passthrough is a great sanity check when first beginning with an audio DSP system. Moreover, it serves as a useful starting point for new projects, as we will see in the following chapters when we develop more complicated programs.

Figure: Final wiring.