2. AUDIO PASSTHROUGH
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A "passthrough" can be viewed as the audio equivalent of "hello world". In this chapter, we will build a passthrough with the hardware and software components previously introduced. Moreover, we will point out some key specifications from the microphone and the DAC (Digital-to-Analog Converter) components so that our STM32 board can successfully interface with them. This will be done in .
Using the CubeMX software, we will update the configuration of the microcontroller in . We will guide you through the wiring in . Finally, we will program our passthrough in using the SW4STM32 software.
Highlighted boxes, as shown below, specify a task for you to determine the appropriate solution and implementation.
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.