# Customizing speech transcriptions for use with your Lex V2 bot
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The default behavior of your bot may sometimes result in inaccurate speech transcriptions. The following features are available to help your bot recognize words or names that are less common or easily confused.

**Topics**
+ [Configuring speech recognition model preferences](customizing-speech-model-preferences.md)
+ [Improving speech recognition with a custom vocabulary](vocab.md)
+ [Configuring voice activity detection sensitivity](customizing-speech-vad-sensitivity.md)
+ [Improving recognition of slot values with runtime hints in the conversation](using-hints.md)
+ [Capturing slot values with spelling styles during the conversation](spelling-styles.md)