RecognizedWordUnit Class
Provides the atomic unit of recognized speech.
Assembly: System.Speech (in System.Speech.dll)
The RecognizedWordUnit type exposes the following members.
| Name | Description | |
|---|---|---|
![]() | Confidence | Gets a value, assigned by the recognizer, that represents the likelihood that a recognized word matches a given input. |
![]() | DisplayAttributes | Gets formatting information used to create the text output from the current RecognizedWordUnit instance. |
![]() | LexicalForm | Gets the unnormalized text of a recognized word. |
![]() | Pronunciation | Gets the phonetic spelling of a recognized word. |
![]() | Text | Gets the normalized text for a recognized word. |
| Name | Description | |
|---|---|---|
![]() | Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
![]() | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
![]() | GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() | ToString | Returns a string that represents the current object. (Inherited from Object.) |
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.
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 of RecognizedWordUnit objects. The RecognizedWordUnit objects are obtained from the Words property on the RecognizedPhrase object.
internal enum WordType { Text, Normalized = Text, Lexical, Pronunciation }
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; } else { 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; }
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
