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began re-tuning analyzer

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This commit is contained in:
Harrison Deng 2017-05-26 12:43:29 -05:00
parent ad0138c489
commit f7e5e5e35e
1 changed files with 4 additions and 16 deletions
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20
core/src/zero1hd/polyjet/audio/AudioAnalyzer.java
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@ -16,7 +16,6 @@ public class AudioAnalyzer {
float[] audioPCM;
float[] spectrum;
float[] lastSpectrum;
float[] fftData;
Runnable analysisAlgorithm;
Runnable thresholdCalculator;
@ -63,11 +62,11 @@ public class AudioAnalyzer {
bassThresholdMultiplier = 1.5f;
UMThresholdMultiplier = 2f;
bassBinBegin = binCalculator(60);
bassBinEnd = binCalculator(800);
bassBinBegin = 1;
bassBinEnd = 17;
UMBinBegin = binCalculator(1500);
UMBinEnd = binCalculator(3000);
UMBinBegin = 300;
UMBinEnd = 450;
UMThresholdCalcRange = thresholdRangeCalc(0.5f);
bassThresholdCalcRange = thresholdRangeCalc(0.7f);
@ -236,7 +235,6 @@ public class AudioAnalyzer {
public void startAnalyticalThread(AudioData audiofile) {
audioPCM = new float[audiofile.getReadWindowSize()];
fftData = new float[audiofile.getReadWindowSize()];
spectrum = new float[(audiofile.getReadWindowSize()/2)+1];
lastSpectrum = new float[(audiofile.getReadWindowSize()/2)+1];
this.audiofile = audiofile;
@ -265,16 +263,6 @@ public class AudioAnalyzer {
return UMPeaks;
}
private int binCalculator(int frequency) {
float totalBins = audiofile.getReadWindowSize()/2 +1;
float frequencyRange = audiofile.getFormat().getSampleRate()/2;
//Formula derived from: (22050b/513)+(22050/513/2) = F
//let b be the bin
//let F be the frequency.
return (int) (totalBins*(frequency - (frequencyRange/totalBins*2))/frequencyRange);
}
private int thresholdRangeCalc(float durationOfRange) {
float timePerWindow = (float)audiofile.getReadWindowSize()/audiofile.getFormat().getSampleRate();
return (int) (durationOfRange/timePerWindow);