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libraries/audio-tools/examples/examples-stream/streams-adc-serial/README.md

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+# Stream Analog Input to Serial Output
+
+## General Description:
+
+We just send the audio data that we receive from microphone the Serial output, so that we can monitor it in the Serial Plotter.
+
+Here is the result on the Arduino Serial Plotter:
+
+![serial-plotter](https://pschatzmann.github.io/Resources/img/serial-plotter-sine.png)
+
+
+### Analog Input:
+
+| ADC     |  ESP32  | UNO R4
+| --------| --------|-------
+| VCC     |  3.3V   | 3.3V
+| GND     |  GND    | GND
+| OUT     |  GPIO34 | A0
+
+For the input I was using a MCP6022 Microphone Sensor.
+Plaese note that the signal that we receive from the ADC might need to be adjusted so that it is oscillating around 0.
+
+![MCP6022](https://pschatzmann.github.io/Resources/img/mcp6022.jpeg)