Mic Analog to DAC output

Official Hardware Classic Zero
1

I write simple sketch to read voice via mic and output to DAC speaker.

This sketch works very poor. Voice is unclean :frowning:

Please answer what is wrong ?

Thanks!

void setup() {
   analogReadResolution(8);
   analogWriteResolution(12);
   Serial.begin(9600);
}

void loop() {
//int sensorValue=  map (analogRead(A5),0,4095,0,1023);  // 
int sensorValue= analogRead(A5)<<2;

// Serial.println(analogRead(A5));
 analogWrite(A0, sensorValue);
}
2

Now works very good :slight_smile:
MIC with amp connect to A1 with 3,3V power

int sensorPin = A1;
int sensorValue = 0;

void setup() {
   analogReadResolution(8);
   analogWriteResolution(16);
   Serial.begin(9600);
   ADC->REFCTRL.bit.REFSEL = ADC_REFCTRL_REFSEL_INTVCC0_Val; 
   ADC->AVGCTRL.reg = 0x00;      //Single conversion no averaging
   GCLK->CLKCTRL.reg = 0x431E;   //enable GGCLK for ADC, CLKGEN3 = 8 MHz oscillator 
   ADC->CTRLB.reg =  0x000;      // Prescale 4, 12 bit resolution, single conversion
}

void loop() {
//sensorValue=  map (analogRead(A5),0,4096,0,1023);
 sensorValue= analogRead(sensorPin)<<1;
// Serial.println(analogRead(A5));
 analogWrite(A0, sensorValue);
}