Fast, Accurate, Flexible Open Source Speech Recognition

Since being released as open source code in 1999, CMU Sphinx provides a platform for building speech recognition applications. It's used in desktop control software, telephony platforms, intelligent houses, computer-assisted language learning tools, information retrieval and mobile applications. Traditionally, CMUSphinx provides support for low-resource and underdeveloped languages.

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  • c
  • cross-platform
  • hidden markov models
  • javascript
  • python


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