ESP32 Audio Tutorial with lots of examples

A well-kept secret of the ESP32 is its extended audio capabilities because it is hard to use. Luckily, I found a library and a toolset enabling us to easily use these capabilities. We now can connect microphones, loudspeakers, Bluetooth loudspeakers, SD cards, and even browsers to an ESP32 to record and play sound. Very handy for all sorts of projects. And we will build an internet radio with a single line of code in the loop().
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Links:
Phil's Library: https://github.com/pschatzmann/arduino-audio-tools
Phil's A2DP library (Needed for Bluetooth): https://github.com/pschatzmann/ESP32-A2DP
ESP32 board: https://s.click.aliexpress.com/e/_9fcxid
Microphone: https://s.click.aliexpress.com/e/_ABXMq1
MAX98357A I2S Amplifier: https://s.click.aliexpress.com/e/_A8FZaH
PCM5102 DAC: https://s.click.aliexpress.com/e/_AdOLAl
I2S ADC: https://s.click.aliexpress.com/e/_9zMQg5
ESP32 Audio Kit: https://s.click.aliexpress.com/e/_9QwJyD
PMOD "Soundcard": https://digilent.com/shop/pmod-i2s2-stereo-audio-input-and-output/
Filter Video: https://youtu.be/D0EUDRo4Mx0
I2S Pins: https://bit.ly/3KAkkmv

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