This chapter will introduce methods of making sounds and playing music using the hardware that comes on the Adafruit Circuit Playground Express. The chapter will first introduce the basics of making the board beep at a certain frequency of sound and will then move on to more advanced topics, such as playing music files using the WAV file format and the board's built-in sound speakers. The techniques in this chapter can be used directly in a wide array of MicroPython projects that you might make. The options for producing audio output in this chapter range from producing simple beeping sounds to playing songs in your embedded projects.
In this chapter, we will cover the following recipes:
- Making a beeping sound
- Controlling tone, frequency, and duration
- Playing a musical note
- Playing a melody
- Sounding the alarm
- Playing WAV files
- Converting MP3 files...
