fullDRC.ino

#include <btAudio.h>

btAudio audio = btAudio("ESP_Speaker");
String command;

void setup() { 

 // Streams audio data to the ESP32   
 audio.begin();

 // Re-connects to last connected device
 audio.reconnect();

 // Outputs the received data to an I2S DAC, e.g. https://www.adafruit.com/product/3678
 int bck = 26; 
 int ws = 27;
 int dout = 25;
 audio.I2S(bck, dout, ws);

 // Opens the serial port
 Serial.begin(115200);
}

float thresh=30;
float attack=0.1;
float release= 0.2;
float ratio = 10;
float kneeWidth= 1;
float gain=0;

void loop() {
 delay(300);
 if(Serial.available()){
  command = Serial.readStringUntil('#');
   if(command.equals("compress")){
    Serial.println("Applying Compression");
    audio.compress(thresh,attack,release,ratio,kneeWidth,gain);
   }
   else if(command.equals("decompress")){
    Serial.println("Releasing Compression");
    audio.decompress();
   }
   else if(command.equals("gain")){
    gain =Serial.parseInt();
    Serial.println((String)"Compressing with a gain of "+gain);
    audio.compress(thresh,attack,release,ratio,kneeWidth,gain);
   }
   else if(command.equals("thresh")){
    thresh =Serial.parseFloat();
    Serial.println(thresh);
    Serial.println((String)"Compressing with a threshold of " + thresh + "dB");
    audio.compress(thresh,attack,release,ratio,kneeWidth,gain);
   }
   else if(command.equals("attack")){
    attack =Serial.parseFloat();
    Serial.println((String)"Compressing with an attack time of " + attack*1000 + "ms");
   audio.compress(thresh,attack,release,ratio,kneeWidth,gain); 
   }
   else if(command.equals("release")){
    release =Serial.parseFloat();
    Serial.println((String)"Compressing with an release time of " + release*1000 + "ms");
    audio.compress(thresh,attack,release,ratio,kneeWidth,gain);
   }
   else if(command.equals("ratio")){
    ratio =Serial.parseFloat();
    Serial.println((String)"Compressing with a Ratio of " + ratio);
    audio.compress(thresh,attack,release,ratio,kneeWidth,gain);
   }
   else if(command.equals("width")){
    kneeWidth =Serial.parseInt();
    Serial.println((String)"Compressing with a knee width of " + kneeWidth + "dB");
    audio.compress(thresh,attack,release,ratio,kneeWidth,gain);
   }
  }
}