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# SampleFrequency

The `SampleFrequency` parameter specifies the sampling frequency of the audio (the frames produced by the module).

If you specify this parameter for the `langid` and `lidoptimizer` modules, HPE IDOL Speech Server checks the classifier set sample frequency against the module sample frequency to look for mismatches. Setting `SampleFrequency` to `0` (the default) disables this check.

NOTE:

If the FFmpeg library is enabled, the `wav` module can accept a variety of audio formats with different sampling frequencies. In such cases, the `wav` module converts the audio to the specified sampling frequency.

NOTE:

To detect breaking glass using the `audiosec` module, HPE strongly recommends that the audio sampling rate is 16000 Hz.

Type: | Integer
Default: | 16000 (`afp`, `afpfeature`, `audiopreproc`, `audiosec`, `audiotemplatedevel`, `audiotemplatescore`, `audiotemplatetrain`, `frontend`, `ivfile`, `ivscore`, `normalizer`, `splitspeech`, `stream`, and `wav` modules) 0 (`langid` and `lidoptimizer` modules) (No default value for the `speakerid` module)
Range: | 8000 or 16000
Required: | Only for the `speakerid` module
Configuration Section: | afp, afpfeature, audiopreproc, audiosec, audiotemplatedevel, audiotemplatescore, audiotemplatetrain, frontend, ivfile, ivscore, langid, lidoptimizer, normalizer, speakerid, splitspeech, stream, and wav modules
Example: | `SampleFrequency=16000`
See Also: | Sfreq (action parameter)

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