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# AppDnnBase

The location of the `appResources` directory, which contains the DNN and `.ian` files to use for audio frame categorization. HPE IDOL Speech Server supplies two pairs of files, one for 8 KHz audio, and one for 16 KHz audio.

If you are running HPE IDOL Speech Server in a directory where the `appResources` directory is copied from the standard installation, you should always set `AppDnnBase` to `appResources/app`.

Note: From the 11.2 release, audio preprocessing in HPE IDOL Speech Server uses new DNN technology, which provides improved performance and requires less tailoring of thresholds to specific audio types. The module uses the `AppDnnBase` parameter and the presence of the `nf` input to the `audiopreproc` module to determine whether to use the new DNN technology. If you do not set `AppDnnBase`, or if the `nf` input is missing, HPE IDOL Speech Server uses the previous implementation of the audio preprocessing algorithm.

Action: | AddTask
Task: | AudioAnalysis, ClusterSpeech, ClusterSpeechTel, ClusterSpeechToTextTel, LangIdFeature, LangIdSegWav, LangIdCumWav, LangIdBndWav, LangIdSegStream, LangIdCumStream, LangIdBndStream, SpeechSilClassification, StreamToTextMusicFilter, StreamToTextMusicFilterPunct
Type: | String
Default: | `appResources/app`
Example: | `AppDnnBase=appResources/app`
See also: | AppFrameDupl FrameDupl AppDnnBase (configuration parameter)

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