Examples of com.sun.speech.freetts.Item

com.sun.speech.freetts.Item
Represents a node in a Relation. Items can have shared contents but each item has its own set of Daughters. The shared contents of an item (represented by ItemContents) includes the feature set for the item and the set of all relations that this item is contained in. An item can be contained in a number of relations and as daughters to other items. This class is used to keep track of all of these relationships. There may be many instances of item that reference the same shared ItemContents.

     */
    public void processUtterance(Utterance utterance) throws ProcessException {
  Relation segmentRelation = utterance.getRelation(Relation.SEGMENT);
        Relation targetRelation = utterance.getRelation(Relation.TARGET);


        Item segment = segmentRelation.getHead();
        Item target = null;
  if (targetRelation != null) target = targetRelation.getHead();
        float prevEnd = 0f;
        while (segment != null) {
            // String name = segment.getFeatures().getString("name");
            // Accumulated duration of all segments in the utterance,
            // in seconds:
            float end = segment.getFeatures().getFloat("end");
            // Individual duration of segment, in milliseconds:
            int dur = (int) ((end - prevEnd) * 1000);
            StringBuffer targetStringBuffer = new StringBuffer();
            while (target != null &&
                   target.getFeatures().getFloat("pos") <= end) {
                float pos = target.getFeatures().getFloat("pos");
                // time axis as percentage of segment duration:
                int percentage = ((int) ((pos - prevEnd) * 1000)) * 100 / dur;
                // f0 as an integer:
                int f0 = (int) target.getFeatures().getFloat("f0");
                targetStringBuffer.append(" ");
                targetStringBuffer.append(percentage);
                targetStringBuffer.append(" ");
                targetStringBuffer.append(f0);
                target = target.getNext();
            }
            // System.err.println(name + " " + dur + targetStringBuffer);
            segment.getFeatures().setInt("mbr_dur", dur);
            segment.getFeatures().setString("mbr_targets",
                                            targetStringBuffer.toString().trim());

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     *         processing of the utterance
     */
    public void processUtterance(Utterance utterance) throws ProcessException {
        // Go through Segment relation and print values into Mbrola
  Relation segmentRelation = utterance.getRelation(Relation.SEGMENT);
        Item segment = segmentRelation.getHead();


  if (segment == null) {
      return;
  }


        // Open Mbrola
        Process process;
        try {
            process = Runtime.getRuntime().exec(cmd);
        } catch (Exception e) {
            throw new ProcessException("Cannot start mbrola program: " + cmd);
        }
        PrintWriter toMbrola = new PrintWriter(process.getOutputStream());
        BufferedInputStream fromMbrola =
            new BufferedInputStream(process.getInputStream());


        while (segment != null) {
            String name = segment.getFeatures().getString("name");
            // Individual duration of segment, in milliseconds:
            int dur = segment.getFeatures().getInt("mbr_dur");
            // List of time-f0 targets. In each target, the first value
            // indicates where on the time axis the target is reached,
            // expressed in percent of segment duration; the second value in
            // each pair is f0, in Hz.
            String targets = segment.getFeatures().getString("mbr_targets");
            String output = (name + " " + dur + " " + targets);
            // System.out.println(output);
            toMbrola.println(output);
            segment = segment.getNext();
        }


        toMbrola.flush();


        // BUG:

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     *
     * @param utterance the utterance that gets the new unit relation
     */
    private void createUnitRelation(Utterance utterance) {


  Item segmentItem0, segmentItem1;
  float end0, end1;
  int targetEnd;
  
  Item unitItem0, unitItem1;
    
  String diphoneName;
      
  Relation unitRelation = utterance.createRelation(Relation.UNIT);
  Relation segmentRelation = utterance.getRelation(Relation.SEGMENT);

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  if (diphone == null) {
      System.err.println
    ("FreeTTS: unit database failed to find entry for: " + 
     diphoneName);
  }
  Item unit = unitRelation.appendItem();
  FeatureSet unitFeatureSet = unit.getFeatures();


  unitFeatureSet.setString("name", diphoneName);
  unitFeatureSet.setInt("target_end", targetEnd);
  unitFeatureSet.setObject("unit", new DiphoneUnit(diphone, unitPart));
  // unitFeatureSet.setInt("unit_part", unitPart);

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     * @param segmentRelation the segmentRelation of interest
     * @param time the time
     */
    public static Item getItem(Relation segmentRelation, float time) {


  Item lastSegment = segmentRelation.getTail();
  
  // if given time is closer to the front than the end, search from
  // the front; otherwise, start search from end
  // this might not be the best strategy though

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     * @param time the time of the Segment Item
     *
     * @return the Segment Item
     */
    public static Item findFromFront(Relation segmentRelation, float time) {
  Item item = segmentRelation.getHead();


  while (item != null &&
         time > SegmentRelationUtils.getSegmentEnd(item)) {
      item = item.getNext();
  }


  return item;
    }

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     * @param time the time of the Segment Item
     *
     * @return the Segment Item
     */
    public static Item findFromEnd(Relation segmentRelation, float time) {
  Item item = segmentRelation.getTail();
    
  while (item != null &&
         SegmentRelationUtils.getSegmentEnd(item) > time) {
      item = item.getPrevious();
  }


  if (item != segmentRelation.getTail()) {
      item = item.getNext();
  }


  return item;
    }

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     * Prepends a schwa to the given item
     * 
     * @param item the item to prepend the schwa to.
     */
    private static void prependSchwa(Item item) {
  Item schwa = item.prependItem(null);
  schwa.getFeatures().setString("name", "ax");
  item.getItemAs(
      Relation.SYLLABLE_STRUCTURE).prependItem(schwa);
    }

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    }
      }
  }


  if (utterance.getRelation(Relation.SEGMENT).getHead() != null) {
      Item first = target.getHead();
      if (first == null) {
    addTargetPoint(target, 0, mean);
      } else  if (first.getFeatures().getFloat("pos") > 0) {
        Item newItem = first.prependItem(null);
        newItem.getFeatures().setFloat("pos", 0.0f);
        newItem.getFeatures().setFloat(
          "f0", first.getFeatures().getFloat("f0"));
      }
      Item last = (Item) target.getTail();
      Item lastSegment 
    = utterance.getRelation(Relation.SEGMENT).getTail();
      float segEnd = 0.0f;


      if (lastSegment != null) {
    segEnd = lastSegment.getFeatures().getFloat("end");
      }


      if (last.getFeatures().getFloat("pos") < segEnd) {
    addTargetPoint(target, segEnd, last.getFeatures().
      getFloat("f0"));

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     *
     * @return the time point mid way in vowel in this syllable
     */
    private final float vowelMid(Item syllable) {
  Voice voice = syllable.getUtterance().getVoice();
  Item firstSeg  = syllable.getItemAs(
            Relation.SYLLABLE_STRUCTURE).getDaughter();
  Item segment;
  float val;


  for (segment = firstSeg; segment != null; segment =segment.getNext()) {
      // TODO refactor phone feature stuff like this so that
      // it can be understood.
      if ("+".equals(voice.getPhoneFeature(segment.toString(), "vc"))) {
    val = (segment.getFeatures().getFloat("end") +
         ((Float) vowelMidPath.findFeature(segment)).floatValue()) / 2.0f;
    return val;
      }
  }

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Related Classes of com.sun.speech.freetts.Item

com.sun.speech.freetts.cart.Phraser

com.sun.speech.freetts.clunits.ClusterUnitSelector

com.sun.speech.freetts.diphone.DiphoneUnitSelector

com.sun.speech.freetts.en.ContourGenerator

com.sun.speech.freetts.en.PauseGenerator

com.sun.speech.freetts.en.PostLexicalAnalyzer

com.sun.speech.freetts.en.us.FeatureProcessors

com.sun.speech.freetts.en.us.FeatureProcessors$AccentedSylIn

com.sun.speech.freetts.en.us.FeatureProcessors$PositionType

com.sun.speech.freetts.en.us.FeatureProcessors$SegOnsetCoda

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