Help getting things right

[d3mac123]

Hi,

I have a Lilygo T-Display (ESP32 S3 model with no DAC pins). I need to play audio externally (all audio files are converted to .h files). Based on several searches, it seems this product may enable my board to output audio - if you have other suggestions, they are welcomed!

So far (while I don't have the DAC/amplifier module), I started writing some code but I don't know exactly how to add and play, for example, file "one.h" - anything I miss that someone can point me in the right direction?

Thank you all!

#include <Wire.h>
#include "Audio.h"
#include "one.h"
// MAX98357A I2S pins. 
#define I2S_WS 10
#define I2S_BCK 11
#define I2S_DOUT 12

Audio audio;

//** Here I need to connect with file one.h - Is the #include "one.h" line above enough? **

void setup() {
  Serial.begin(115200);
  Wire.begin(); 

  // Select I2S pins
  audio.setPinout(I2S_BCK, I2S_WS, I2S_DOUT);

  // Volume control.
  audio.setVolume(21);
}

void loop() {
  //** Here I need to play file one.h **
  audio.loop();
}

[schreibfaul1]

Yes, the S3 has no built-in DAC. Whereas the DAC of the ESP32 with its 8 bits (256 different analogue values) does not sound really good. The I2S output only delivers a digital signal.

[d3mac123]

I guess my questions are:

• can I use the solution I mentioned (quality of the audio is not super important - basically it is just a number counter - I could even using a TTS library, if it works easier)? https://www.amazon.com/AITRIP-Amplifier-Filterless-Amplifiers-Raspberry/dp/B0B4J93M9N/ref=asc_df_B0B4J93M9N/?tag=hyprod-20&linkCode=df0&hvadid=632101815305&hvpos=&hvnetw=g&hvrand=3495880550744405403&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=1015243&hvtargid=pla-1897361898641&th=1
• Is there any examples from your library that shows how to play an audio from a .h file?