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# Speech-To-Text Results

When you run speech-to-text, CFS adds a transcription of the speech to the document content (the `DRECONTENT` field).

CFS can also add the start time, duration, and confidence score for each detected word, sentence boundary, and period of silence to the document metadata:

- To add start times and durations to the document metadata, set the parameter `AddTimingsToMetadata=TRUE`.
- To add confidence scores to the document metadata, set the parameter `AddConfidenceToMetadata=TRUE`.

If you choose to add information to the document metadata, CFS adds a metadata field named `SpeechToTextWord` for each detected word, sentence boundary, or period of silence.

When you set `AddTimingsToMetadata=TRUE`, the field includes attributes named `start` and `duration`, which describe the start time and duration in the audio:

    <SpeechToTextWord start="3.1562" duration="0.3568">hello</SpeechToTextWord>

When you set `AddConfidenceToMetadata=TRUE`, the field includes an attribute named `confidence`, which describes the confidence score. The confidence score is a value between 0 (zero) and 1. Higher confidence scores indicate greater confidence of a correct result.

    <SpeechToTextWord confidence="0.9568">hello</SpeechToTextWord>

When you set `AddTimingsToMetadata=TRUE` and `AddConfidenceToMetadata=TRUE`, CFS adds fields that include all of these attributes:

    <SpeechToTextWord start="3.1562" duration="0.3568" confidence="0.9568">hello</SpeechToTextWord>

Fields that represent periods of silence have no value, for example:

    <SpeechToTextWord start="3.1562" duration="0.3568" confidence="0.9568" />

Fields that represent sentence boundaries have a value of "`.`", for example:

    <SpeechToTextWord start="3.1562" duration="0.3568" confidence="0.9568">.</SpeechToTextWord>

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