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Improve Mean Calculation in Getpeak #4

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Improve Mean Calculation in Getpeak #4

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3 changes: 3 additions & 0 deletions 5_EyeBlinkDetection/5_EyeBlinkDetection.ino
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Original file line number Diff line number Diff line change
Expand Up @@ -93,6 +93,9 @@ bool Getpeak(float new_sample) {
}

// Calculate mean
//Instead of recalculating the mean from scratch every time, you can use a sliding mean formula for efficiency:
// Update mean dynamically (sliding window mean)
//mean = mean + (new_sample - data_buffer[data_index]) / DATA_LENGTH;
float sum = 0.0, mean, standard_deviation = 0.0;
for (int i = 0; i < DATA_LENGTH; ++i){
sum += data_buffer[(data_index + i) % DATA_LENGTH];
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