# Speech To Text (STT) This chapter describes how STT engine works. The STT is a programs or API that converts the speech into text. Each STT has a specific configuration and supports multiple voices and/or languages. The configuration of each STT you use must appear in the [settings.yml](settings.md) file. The syntax used is YAML. ## General defaults The setting.yml defines the STT you want to use by default ``` default_speech_to_text: "type default STT here" ``` Then, still in the settings.yml file, each STT must set up its configuration following the 'speech_to_text' tag : ``` speech_to_text: - STT1: STT1parameter1: "value option1" STT1parameter2: "value option2" - STT2: STT2parameter1: "value option1" ``` ## Current Available STT - [apiai](../stt/apiai/README.md) - [bing](../stt/bing/README.md) - [google](../stt/google/README.md) - [houndify](../stt/houndify/README.md) - [witai](../stt/wit/README.md) ## Full Example In the settings.yml file : ``` default_speech_to_text: "google" speech_to_text: - google: language: "fr-FR" - wit: key: "B5JI3YUSLYOYWNIZRNBVM34XUODME2K" - bing: key: "9e48dert65904838bedc11aea6b36fb0" - apiai: key: "e0cbff145af44944a6b9f82c0668b527" language: "fr" - houndify: key: "6ej90T7qAV74OYXk4X4vI2Xhk7wPsJu4aEZ0G5Ll-BMmV1JGtFpCxtSH9SmTY4G3bpEJ7a5y_GTQid-CAKI6vw==" client_id: "lM2JXeaSticbSo9-llczbA==" ```