question: public Vector process ( AudioPreProcessor in ) throws IllegalArgumentException , IOException { if ( in == null ) throw new IllegalArgumentException ( "the audio preprocessor must not be a null value" ) ; if ( in . getSampleRate ( ) != sampleRate ) throw new IllegalArgumentException ( "sample rates of inputstream differs from sample rate of the sone processor" ) ; Vector mfcc = new Vector ( ) ; int samplesRead = in . append ( inputData , hopSize , hopSize ) ; while ( samplesRead == hopSize ) { for ( int i = hopSize , j = 0 ; i < windowSize ; j ++ , i ++ ) inputData [ j ] = inputData [ i ] ; samplesRead = in . append ( inputData , hopSize , hopSize ) ; mfcc . add ( processWindow ( inputData , 0 ) ) ; } return mfcc ; }
target:  Performs the transformation of the input data to MFCCs. This is done by splitting the given data into windows and processing each of these windows with processWindow().