Skip to content

Instantly share code, notes, and snippets.

@lukaspili
Created Mar 2, 2020
Embed
What would you like to do?
public void run() {
if (stream != null) {
running = true;
try {
StopWatch sw = new StopWatch();
sw.Start();
float leqA2 = 0f;
float leqA = 0f;
arr_samples = IOStream.toFloat(stream.get(Utils.LEQ_1SEC));
// KJFFT computation
float[] bands = kjfft.frequencyAnalyze24Bands(arr_samples, true);
float[] bands_cal = new float[bands.length];
// Apply manual calibration for kiosk
if(!isSmartphone) {
float[] kiosk_cal = {0f, 0f, 0f, 0f, 1.6f, 4.95f, -0.35f, 4.2f, 5.8f, 1.95f, -1.55f, 3.25f, 1.5f, -1.05f, 1.15f, -2.1f, 5.45f, 10f, 1.6f, -3.1f, 2.3f, -2.6f, -4.15f, -6.25f, -9.85f};
for(int i = 0; i < bands.length; i++) {
bands_cal[i] = bands[i]+ kiosk_cal[i];
}
} else {
bands_cal = bands;
}
bands = bands_cal;
// A weighting calibration
float[] bands_A = new float[bands.length];
float[] Aweighting = {-30.2f, -26.2f, -22.5f, -19.1f, -16.1f, -13.4f, -10.9f, -8.6f, -6.6f, -4.8f, -3.2f, -1.9f, -0.8f, 0f, 0.6f, 1f, 1.2f, 1.3f, 1.2f, 1f, 0.5f, -0.1f, -1.1f, -2.5f, -4.3f};
for (int i = 0; i < bands.length; i++) {
bands_A[i] = bands_cal[i] + Aweighting[i];
}
// calculate overall 1sec dBA value based on the sum of third octave band values
for (int i = 0; i < bands.length; i++) {
leqA2 += (float) Math.pow(10, (bands_A[i]) / 10);
}
leqA = (float) (10 * Math.log10(leqA2));
//round 1 decimal place
int aux = (int) (leqA * 10);
leqA = aux / 10f;
if(isSmartphone) {
leqA = leqA + smartphoneCalibrationDelta;
} else {
leqA = leqA + 23.3f;
}
// Calculate the global LEQ ( averaged over the duration of the measurements
// calculate from the global Leq and the last Leq
allLEQAcals.add(leqA);
currentLEQAcal = (float) (10F * Math.log10((((allLEQAcals.size() - 1) * Math.pow(10, (currentLEQAcal / 10))) + Math.pow(10, (allLEQAcals.lastElement() / 10))) / allLEQAcals.size()));
// Log.i("SoundManager", "LEQA calibrated : " + leqAcal);
// Log.i("SoundManager", "bande 0 : " + bands[0] );
// Log.i("SoundManager", "bande 1 : " + bands[1] );
// Log.i("SoundManager", "bande 2 : " + bands[2] );
// Log.i("SoundManager", "bande 3 : " + bands[3] );
// Log.i("SoundManager", "bande 4 : " + bands[4] );
// Log.i("SoundManager", "bande 5 : " + bands[5] );
// Log.i("SoundManager", "bande 6 : " + bands[6] );
// Log.i("SoundManager", "bande 7 : " + bands[7] );
// Log.i("SoundManager", "bande 8 : " + bands[8] );
// Log.i("SoundManager", "bande 9 : " + bands[9] );
// Log.i("SoundManager", "bande 10 : " + bands[10] );
// Log.i("SoundManager", "bande 11 : " + bands[11] );
// Log.i("SoundManager", "bande 12 : " + bands[12] );
// Log.i("SoundManager", "bande 13 : " + bands[13] );
// Log.i("SoundManager", "bande 14 : " + bands[14] );
// Log.i("SoundManager", "bande 15 : " + bands[15] );
// Log.i("SoundManager", "bande 16 : " + bands[16] );
// Log.i("SoundManager", "bande 17 : " + bands[17] );
// Log.i("SoundManager", "bande 18 : " + bands[18] );
// Log.i("SoundManager", "bande 19 : " + bands[19] );
// Log.i("SoundManager", "bande 20 : " + bands[20] );
// Log.i("SoundManager", "bande 21 : " + bands[21] );
// Log.i("SoundManager", "bande 22 : " + bands[22] );
// Log.i("SoundManager", "bande 23 : " + bands[23] );
// Log.i("SoundManager", "overall LeqA : " + currentLEQAcal);
// Log.i("SoundManager", "Leq 1sec : " + leqA);
listener.onReceived(leqA, currentLEQAcal);
long t1 = sw.Stop();
// Log.v("SoundManager", "duree de traitement : " + t1);
running = false;
System.gc();
} catch (Exception e) {
running = false;
e.printStackTrace();
}
}
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment