Compatibility Notes

IDOL Speech Server 10.8 introduced Deep Neural Network (DNN) Acoustic Modeling. DNN modeling uses files with the extension .dnn in a language pack. These files were introduced in IDOL Speech Server language pack version 6.0 or later. In general, recent IDOL Speech Server releases before 10.8 can still use these Language Packs, but they ignore the .dnn files and use only the underlying AM file for speech-to-text.

IDOL Speech Server releases 10.10, 10.11, and 11.5 also introduce additional support for new Language Pack Neural Network technologies. The following table describes the minimum version of IDOL Speech Server that you need to run each version of the language pack.

Language Pack Version Minimum Server Version
6.x 10.8
7.x 10.10
8.x 10.11
9.x 11.5

If you use an older version of IDOL Speech Server, the server either reports a compatibility error, or runs without the Neural Network technology.

All versions of the server are backward compatible with pre-existing language packs.

In addition, language packs with version 6.0 or later use a newer format of the Language Model (version 3). This change means that IDOL Speech Server version 10.3 and earlier are not compatible with these newer language packs.


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