RecognizedWordUnit RecognizedWordUnit RecognizedWordUnit RecognizedWordUnit Class


Provides the atomic unit of recognized speech.

public ref class RecognizedWordUnit
public class RecognizedWordUnit
type RecognizedWordUnit = class
Public Class RecognizedWordUnit


The following example shows a utility routine (stringFromWordArray) that generates strings. The strings contain lexical output (using LexicalForm), normalized text (using Text), or phonetic characters from the International Phonetic Alphabet (using Pronunciation). Strings are formatted using DisplayAttributes objects obtained from the DisplayAttributes property from a ReadOnlyCollection<T> of RecognizedWordUnit objects. The RecognizedWordUnit objects are obtained from the Words property on the RecognizedPhrase object.

internal enum WordType   
  Normalized = Text,  
internal static string stringFromWordArray(ReadOnlyCollection<RecognizedWordUnit> words, WordType type)   
  string text = "";  
  foreach (RecognizedWordUnit word in words)   
    string wordText = "";  
    if (type == WordType.Text || type == WordType.Normalized)   
      wordText = word.Text;  
    else if (type == WordType.Lexical)   
      wordText = word.LexicalForm;  
    else if (type == WordType.Pronunciation)   
      wordText = word.Pronunciation;  
      throw new InvalidEnumArgumentException(String.Format("[0}: is not a valid input", type));  
    // Use display attribute  

    if ((word.DisplayAttributes & DisplayAttributes.OneTrailingSpace) != 0)   
      wordText += " ";  
    if ((word.DisplayAttributes & DisplayAttributes.TwoTrailingSpaces) != 0)  
      wordText += "  ";  
    if ((word.DisplayAttributes & DisplayAttributes.ConsumeLeadingSpaces) != 0)   
      wordText = wordText.TrimStart();  
    if ((word.DisplayAttributes & DisplayAttributes.ZeroTrailingSpaces) != 0)  
      wordText = wordText.TrimEnd();  

    text += wordText;  

  return text;  


All results returned by a recognition engine are constructed of RecognizedWordUnit objects.

An array of RecognizedWordUnit objects is accessible for any recognition operation through the Words property on the RecognizedPhrase object.

In addition to providing a measure of recognition certainty (Confidence) a RecognizedWordUnit instance provides:

  • Normalized and exact (or lexical) text representations for a recognized word. For more information, see ReplacementText, Text, and LexicalForm.

  • Pronunciation information using characters from a supported phonetic alphabet, such as the International Phonetic Alphabet (IPA) or the Universal Phone Set (UPS). For more information see Pronunciation.

  • Formatting for printing. For more information see the DisplayAttributes class and its DisplayAttributes property.


RecognizedWordUnit(String, Single, String, String, DisplayAttributes, TimeSpan, TimeSpan) RecognizedWordUnit(String, Single, String, String, DisplayAttributes, TimeSpan, TimeSpan) RecognizedWordUnit(String, Single, String, String, DisplayAttributes, TimeSpan, TimeSpan) RecognizedWordUnit(String, Single, String, String, DisplayAttributes, TimeSpan, TimeSpan)

Initializes a new instance of the RecognizedWordUnit class.


Confidence Confidence Confidence Confidence

Gets a value, assigned by the recognizer, that represents the likelihood that a recognized word matches a given input.

DisplayAttributes DisplayAttributes DisplayAttributes DisplayAttributes

Gets formatting information used to create the text output from the current RecognizedWordUnit instance.

LexicalForm LexicalForm LexicalForm LexicalForm

Gets the unnormalized text of a recognized word.

Pronunciation Pronunciation Pronunciation Pronunciation

Gets the phonetic spelling of a recognized word.

Text Text Text Text

Gets the normalized text for a recognized word.


Equals(Object) Equals(Object) Equals(Object) Equals(Object)

Determines whether the specified object is equal to the current object.

(Inherited from Object)
GetHashCode() GetHashCode() GetHashCode() GetHashCode()

Serves as the default hash function.

(Inherited from Object)
GetType() GetType() GetType() GetType()

Gets the Type of the current instance.

(Inherited from Object)
MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

Creates a shallow copy of the current Object.

(Inherited from Object)
ToString() ToString() ToString() ToString()

Returns a string that represents the current object.

(Inherited from Object)

Applies to

See also