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# Introduction

HPE Media Server can perform the following types of analysis on speech:

- Language identification identifies the language of the speech in the audio.
- Speech-to-text extracts speech and converts it into text.
- Speaker identification identifies the people who speak in the video.
- Audio matching identifies when known audio clips appear in the ingested media. You can use audio matching to help identify copyright infringement if copyrighted music is played or detect specific advertisements in ingested video.

When the audio or video source contains narration or dialogue, running speech analysis and indexing the resulting metadata into IDOL Server means that IDOL can:

- search all of the video that you have processed to find clips where a speaker talks about a specific topic.
- provide parametric search to filter the results by speaker.
- categorize video clips.
- cluster together video clips that contain related concepts.

To analyze speech, you must have an IDOL Speech Server. For more information about using IDOL Speech Server, refer to the IDOL Speech Server documentation.

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