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arduino-audio-tools/examples/examples-stream/streams-memory_mp3-pwm
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pschatzmann deb30e0110 Remove unnecessary addNotifyAudioChange
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BabyElephantWalk60_mp3.h rename examples-streams to examples-stream 2021-11-04 09:24:39 +01:00
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streams-memory_mp3-pwm.ino Remove unnecessary addNotifyAudioChange 2024-03-02 09:03:27 +01:00

README.md

Decoding a MP3 file

In this example we decode a MP3 file into RAW output and write the output with the help of a PWM signal to the pins.

Currently we provide multiple mp3 decoders

  • libhelix
  • tinymp3

Unfortunatly non of those are currently stable in all environments....

Output Device: Earphone

To test the output I am using an earphone from a mobile phone. We get 2 signals one for the left and the other for the right channel.

DAC

The pins depend on the Processor:

EarPhone ESP32 RPI Pico MBED
Left GPI2 GPI2 GPI2
Right GPI3 GPIO3 GPI3
GND GND GND GND

To verify check the PIN_PWM_START in AudioConfig.h or you can set the pins by calling setPins() method on the PWMConfig object.