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# Transcode Audio

In most cases you do not need to transcode audio before sending it to IDOL Speech Server.

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Transcoding is necessary only when you set `IdolSpeechUseStreaming=TRUE`, which is not recommended.

In the following configuration, audio is streamed to the IDOL Speech Server, because the parameter `IdolSpeechUseStreaming` is `TRUE`. The configuration therefore includes the parameters `TranscodeServerHost` and `TranscodeServerPort` so that CFS sends the audio to a Transcode Server before it is sent to Speech Server. Although the audio is streamed to Speech Server, the shared folder specified by the `SharedPath` parameter is required so that CFS and the Transcode Server can exchange data.

    [ImportTasks]
    Pre0=Lua:scripts/IdolSpeech.lua

    [IdolSpeechSettings]
    IdolSpeechServers=server1:15000,server2:15000
    IdolSpeechUseStreaming=TRUE
    TranscodeServerHost=server3
    TranscodeServerPort=30000
    SharedPath=\\server\SharedPath
    IdolSpeechLanguage=ENUK

If you are streaming audio to Speech Server but know that files are already in an acceptable format, you can configure CFS to bypass the transcoding step of the `IdolSpeech` task.

To bypass transcoding

- To bypass transcoding for all documents, do not set the `TranscodeServerHost` or `TranscodeServerPort` configuration parameters when you configure the `IdolSpeech` task.
- To bypass transcoding for a single document, add the field `AUTN_FORMAT_CORRECT_FOR_TRANSCRIPTION` to the document. The field can have any value. CFS does not send these files to the Transcode Server.

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