Intelligent Real-time Interactive Systems Toolkit

Creating new modules

It is easy to create your own module by sub-classing IrisModule. Let's say you want to create your own dialogue manager (instead of using IrisFlow). This example shows a dialog manager that will simply repeat everything that the user says:

import iristk.speech.RecResult;
import iristk.system.Event;
import iristk.system.InitializationException;
import iristk.system.IrisModule;

public class MyDialogManager extends IrisModule {
    public void onEvent(Event event) {
        // We have received an event from some other module, 
        // check whether we should react to it
        if (event.triggers("monitor.system.start")) {
            // The system started, listen for speech
        } else if (event.triggers("sense.speech.rec**")) {
            // We received a speech recognition result, get the text
            String text = event.getString("text");
            // Check whether there is any result
            if (text != null && text.length() > 0) {
                // Create an event for the speech synthesizer
                Event newEvent = new Event("action.speech");
                if (text.equals(RecResult.NOMATCH))
                    // We got a NOMATCH, inform the user
                    newEvent.put("text", "I didn't understand that");
                    // Add the parameter text, which will repeat the speech recognition result
                    newEvent.put("text", "You said " + text);
            } else {
                // If not, listen again
        } else if (event.triggers("monitor.speech.end")) {
            // The synthesizer completed, listen for speech again
    // Make the recognizer start listening
    private void listen() {
        send(new Event("action.listen"));

    public void init() throws InitializationException {
        // Initialize the module


Now, if you create a simple dialogue system, you can remove the Flow module and add this module instead:

//system.addModule(new FlowModule(new GuessFlow()));
system.addModule(new MyDialogManager());

To see which events you can react to and produce, please refer to the list of standardized events.

Note that the init() method is called when the module is added to the system. If you want to do something special when the system actually starts, you should catch the "monitor.system.start" event (as done in the example above).

Creating a new speech recognizer

If you want to add your own speech recognizer, it is more convenient to implement the iristk.speech.Recognizer interface and then use it as an argument in the RecognzierModule constructor.

Create a new speech synthesizer

If you want to add your own speech synthesizer, it is more convenient to implement the iristk.speech.Synthesizer interface and then use it as an argument in the SynthesizerModule constructor.

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Guide to IrisTK

Copyright © Gabriel Skantze, 2013-