What Shazam doesn't want you to know

What Shazam doesn't want you to know ,[object Object]

[object Object],[object Object],[object Object]

[object Object],[object Object]

Let it listen for +/- 20 seconds.

It tells you: ,[object Object],[object Object],[object Object]

[object Object],private AudioFormat getFormat() { float sampleRate = 44100; int sampleSizeInBits = 8; int channels = 1; boolean signed = true ; boolean bigEndian = true ; return new AudioFormat( sampleRate, sampleSizeInBits, channels, signed, bigEndian); } ,[object Object],[object Object],[object Object]

[object Object],final AudioFormat format = getFormat(); DataLine.Info info = new DataLine.Info(TargetDataLine. class , format); final TargetDataLine line = (TargetDataLine) AudioSystem. getLine (info); line.open(format); line.start(); ,[object Object],[object Object],[object Object]

[object Object],out = new ByteArrayOutputStream(); running = true ; try { while ( running ) { int count = line.read( buffer , 0, buffer . length ); if (count > 0) { out .write( buffer , 0, count); } } out .close(); } catch (IOException e) { throw new RuntimeException(e); } ,[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object]

The amount of cycles per second

i.e. one sine wave. ,[object Object],[object Object],[object Object]

[object Object],byte audio[] = out .toByteArray(); final int amountSlices = audio. length / SLICE_SIZE ; Complex[][] results = new Complex[amountChucks][]; for ( int slice = 0;slice < amountSlices; slice++) { Complex[] complex = new Complex[ SLICE_SIZE ]; for ( int i = 0;i< SLICE_SIZE ;i++) { complex[i] = new Complex(audio[(slice* SLICE_SIZE )+i], 0); } results[slice] = FFT. fft (complex); } ,[object Object],[object Object],[object Object]

[object Object],Spectum Analyzer A spectrum analyzer or spectral analyzer is a device used to examine the spectral composition of some electrical, acoustic , or optical waveform. ,[object Object],[object Object],[object Object]

38 42 113 131 245 (etc...) ,[object Object],[object Object],[object Object]

[object Object],public void harvest(File rootDirectory) { String[] itemsInDirectory = rootDirectory.list(); for (String itemInDirectory:itemsInDirectory) { if (itemInDirectory.endsWith( ".mp3" )) { //Assume mp3 file File mp3File = new File(mp3Directory, itemInDirectory); captureAudio(mp3File); } else if ( new File(mp3Directory, itemInDirectory).isDirectory()) { //Directory? Recurse! harvest( new File(mp3Directory, itemInDirectory)); } } } ,[object Object],[object Object],[object Object]

What Shazam doesn't want you to know

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What Shazam doesn't want you to know