Examples of edu.cmu.sphinx.frontend.util.StreamDataSource

edu.cmu.sphinx.frontend.util.StreamDataSource

A StreamDataSource converts data from an InputStream into Data objects. One would call {@link #setInputStream(InputStream,String) setInputStream} to setthe input stream, and call {@link #getData} to obtain the Data object. TheInputStream can be an arbitrary stream, for example a data from the network or from a pipe. StreamDataSource is not aware about incoming data format and assumes that incoming data matches StreamDataSource configuration. By default it's configured to read 16 kHz little-endian 16-bit signed raw data. If data has wrong format the result of the recognition is undefined. Also note that the sample rate of the data must match the sample required by the the acoustic model. If your model decodes 16 kHz files you can't recognize 8kHz data using it. You can use AudioFileDataSource instead to read the file headers and to convert incoming data to the required format automatically.

     * @param args argv[0] : The name of an audio file argv[1] : SphinxProperties file
     */
    static public void main(String[] args) {
        FrontEnd frontEnd;
        FrontEnd cepstrumFrontEnd;
        StreamDataSource dataSource;
        StreamDataSource cepstrumDataSource;


        prefs = Preferences.userRoot().node(PREFS_CONTEXT);
        filename = prefs.get(FILENAME_PREFERENCE, "untitled.raw");
        file = new File(filename);


        ConfigurationManager cm = new ConfigurationManager(configURL);
        setProperty(cm, "trigramModel", "location", lm.toString());


        Recognizer recognizer = cm.lookup("recognizer");
        StreamDataSource dataSource = cm.lookup(StreamDataSource.class);


        AudioInputStream ais = getAudioInputStream(audioFileURL);
        dataSource.setInputStream(ais);


        recognizer.allocate();
        Lattice lattice = new Lattice(recognizer.recognize());


        cm = new ConfigurationManager(configURL);
        setProperty(cm, "keepAllTokens", "true");
        setProperty(cm, "trigramModel", "location", lm.toString());


        recognizer = cm.lookup("recognizer");
        recognizer.allocate();
        dataSource = cm.lookup(StreamDataSource.class);
        dataSource.setInputStream(getAudioInputStream(audioFileURL));
        Lattice allLattice = new Lattice(recognizer.recognize());


        assertTrue(lattice.isEquivalent(allLattice));
    }

Examples of edu.cmu.sphinx.frontend.util.StreamDataSource

Related Classes of edu.cmu.sphinx.frontend.util.StreamDataSource