void QtCVMainWindow::speech()
{
    ps_decoder_t *ps;
    cmd_ln_t *config;
    char const *hyp, *uttid;
    int rv;
    int32 score;

    config = cmd_ln_init(NULL, ps_args(), TRUE,
                         "-hmm", MODELDIR "/hmm/en_US/hub4wsj_sc_8k",
                         "-lm", MODELDIR "/lm/en/turtle.DMP",
                         "-dict", MODELDIR "/lm/en/turtle.dic",
                         NULL);
    if (config == NULL)
        return;
    ps = ps_init(config);
    if (ps == NULL)
        return;

    AUD_DeviceSpecs specs;
    specs.channels = AUD_CHANNELS_MONO;
    specs.rate = AUD_RATE_16000;
    specs.format = AUD_FORMAT_S16;
    AUD_Reference<AUD_IReader> capture = new AUD_ConverterReader(new AUD_OpenALReader(specs.specs), specs);

    AUD_Buffer buffer(specs.rate * 5 * AUD_DEVICE_SAMPLE_SIZE(specs));
    int samples = specs.rate * 5;
    int len;
    int16_t* sbuf = reinterpret_cast<int16_t*>(buffer.getBuffer());
    bool eos;

    while(samples > 0)
    {
        len = capture->getLength();

        if(len > samples)
            len = samples;

        if(len > 0)
        {
            capture->read(len, eos, reinterpret_cast<sample_t*>(sbuf));
            sbuf += len;
            samples -= len;
        }
    }

    rv = ps_start_utt(ps, "goforward");
    if (rv < 0)
        return;

    rv = ps_process_raw(ps, reinterpret_cast<int16*>(buffer.getBuffer()), 5 * specs.rate, false, true);
    if(rv < 0)
        return;

    rv = ps_end_utt(ps);
    if (rv < 0)
        return;

    hyp = ps_get_hyp(ps, &score, &uttid);

    QMessageBox msgBox;

    if(!hyp)
        msgBox.setText("No clue what you are talking about.");
    else
        msgBox.setText(hyp);

    msgBox.exec();

    ps_free(ps);
}