Why 11025Khz??

[Slim1991]

/**
* Invoke the echoprint native library and generate the fingerprint code.

* Since echoprint requires the audio data to be an array of floats in the

* range [-1, 1] this method will normalize the data array transforming the

* 16 bit signed shorts into floats.
*
* @param data PCM encoded data as shorts
* @param numSamples number of PCM samples at 11025 KHz
* @return The generated fingerprint as a compressed - base64 string.
*/
public String generate(short data[], int numSamples){..}

I read your comment then I know you record audio at 11025 Khz. I've changed to 44100 Khz to see what happens then I know It doesn't recognize music anymore.