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max9814 sampling at 50ms

alex ikpa answered on April 3, 2024 Popularity 1/10 Helpfulness 1/10

answer max9814 sampling at 50ms

max9814 sampling at 50ms

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const int max9814Pin = A0;  // Analog pin connected to MAX9814 output
const int sampleDuration = 50;  // Sampling duration in milliseconds

void setup() {
  Serial.begin(9600);
}

void loop() {
  unsigned long startTime = millis();  // Get the start time

  // Perform analog readings for the specified duration
  int sum = 0;
  int numSamples = 0;
  while (millis() - startTime < sampleDuration) {
    sum += analogRead(max9814Pin);
    numSamples++;
    delay(1);  // Delay to avoid overwhelming the serial output
  }

  // Calculate the average voltage level
  float averageVoltage = (float)sum / numSamples;

  // Convert voltage to dB
  // Assuming sensitivity of MAX9814 is 3.3V at 0dB
  // and 0.00625V change per dB
  float voltageChangePerDb = 0.00625;
  float voltageAt0dB = 3.3;
  float voltage = averageVoltage * (5.0 / 1023.0); // Convert ADC value to voltage (assuming 5V Vref)
  float dB = 20 * log10(voltage / voltageAt0dB);

  Serial.print("Average dB: ");
  Serial.println(dB);

  delay(1000);  // Delay before next sampling
}

Popularity 1/10 Helpfulness 1/10 Language cpp

Source: chat.openai.com

Tags: c++

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Contributed on Apr 03 2024

alex ikpa

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max9814 sampling at 50ms

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