const int micPin = A0; //MIC PORT
const int LedPin = LED_BUILTIN; //FLASH BUILT IN LED
const int numberOfSamples = 128; //NUMBER OF READINGS
const int middleValue = 512; //MIDDLE OF RANGE
int sample; //VALUE FROM MIC
long Signal; //READING AFTER DC OFFSET
long newReading; //AVERAGE OF LOOP READINGS
long runningAverage = 0; //CACULATED VALUES
const int averagedOver = 16; //HOW QUICK NEW VALUES AFFECT RUNNING AVG
const int threshold = 400; //AT WHAT LEVEL LED COMES ON
void setup()
{
pinMode(LedPin, OUTPUT); //
Serial.begin(9600);
}
// put your setup code here, to run once:
void loop()
{
long sumOfSquares = 0;
for (int I = 0; I < numberOfSamples; I++) { //average readings
sample = analogRead(micPin); //take a reading
Signal = (sample - middleValue);
Signal *= Signal; //SQUARE IT
sumOfSquares += Signal; //add to the total
}
newReading = sumOfSquares / numberOfSamples;
//caculate running average
runningAverage = (((averagedOver - 1) * runningAverage) + newReading) / averagedOver;
Serial.print("new:"); Serial.print(newReading);
Serial.print(".");
Serial.print("running:");
Serial.printin(runningAverage);
if (runningAverage > threshold) { //is average more than threshold?
digitalWrite(LedPin, HIGH);
} else {
digitalWrite(LedPin, LOW;
}
}
// put your main code here, to run repeatedly:
}
const int micPin = A0; //MIC PORT
const int LedPin = LED_BUILTIN; //FLASH BUILT IN LED
const int numberOfSamples = 128; //NUMBER OF READINGS
const int middleValue = 512; //MIDDLE OF RANGE
int sample; //VALUE FROM MIC
long Signal; //READING AFTER DC OFFSET
long newReading; //AVERAGE OF LOOP READINGS
long runningAverage = 0; //CACULATED VALUES
const int averagedOver = 16; //HOW QUICK NEW VALUES AFFECT RUNNING AVG
const int threshold = 400; //AT WHAT LEVEL LED COMES ON
void setup()
{
pinMode(LedPin, OUTPUT); //
Serial.begin(9600);
}
// put your setup code here, to run once:
void loop()
{
long sumOfSquares = 0;
for (int i = 0; i < numberOfSamples; i++) { //average readings .. .. .. .. ( NORMALLY I is lowercase )
sample = analogRead(micPin); //take a reading
Signal = (sample - middleValue);
Signal *= Signal; //SQUARE IT
sumOfSquares += Signal; //add to the total
}
newReading = sumOfSquares / numberOfSamples;
//caculate running average
runningAverage = (((averagedOver - 1) * runningAverage) + newReading) / averagedOver;
Serial.print("new:"); Serial.print(newReading);
Serial.print(".");
Serial.print("running:");
Serial.println(runningAverage);
if (runningAverage > threshold) { //is average more than threshold?
digitalWrite(LedPin, HIGH);
} else {
digitalWrite(LedPin, LOW);
}
}
