# CMU Sphinx Projects at AI Tinkerers

> Canonical HTML: https://aitinkerers.org/technologies/cmu-sphinx
> Markdown URL: https://aitinkerers.org/technologies/cmu-sphinx.md
> Technology record last updated: 2026-03-04T16:47:20Z
> Generated: 2026-09-21T01:35:28Z

A veteran open source speech recognition toolkit providing speaker-independent large vocabulary continuous recognition.

CMU Sphinx (also known as PocketSphinx, Sphinx-4, and Pocketsphinx-Python) delivers a flexible suite of speech recognition tools developed at Carnegie Mellon University. It supports multiple languages including English, French, and Mandarin, utilizing Hidden Markov Models (HMMs) and n-gram statistical language models. The toolkit is designed for efficiency on low-resource platforms (PocketSphinx) and high-level research (Sphinx-4), making it a reliable choice for offline transcription and voice command integration without relying on cloud-based APIs.

- Official technology site: https://cmusphinx.github.io/
- Public AI Tinkerers demos and talks: 2
- Result page: 1 of 1

## Recent Public Talks and Demos

### [UzbekVoice](https://tashkent.aitinkerers.org/talks/rsvp_7WmwgOqtMgg)

UzbekVoiceAI is an innovative company specializing in speech processing and artificial intelligence solutions for the Uzbek-speaking audience. Our mission is to deliver high-quality speech recognition (STT) and text-to-speech (TTS) technologies for the Uzbek language, enhancing user interaction with digital devices and services. We develop solutions for speech-to-text conversion, text-to-speech synthesis, and large language models (LLMs) tailored to the unique features of the Uzbek language.

- Event context: AI Tinkerers - Tashkent Inaugural Meetup (October) — 2024-10-31 — Tashkent
- Public talk page: https://tashkent.aitinkerers.org/talks/rsvp_7WmwgOqtMgg

### [YT shorts finder](https://austin.aitinkerers.org/talks/rsvp_TpbSnDWuX0s)

A way to extract meaning from youtube shorts and search over your personalized database of them, using a mix of vision models, speech transcription models, and general purpose LLMs

- Event context: Community AI Demos - September Edition — 2024-09-12 — Austin
- Public talk page: https://austin.aitinkerers.org/talks/rsvp_TpbSnDWuX0s

## Related Technologies

- [Amazon Transcribe](https://aitinkerers.org/technologies/amazon-transcribe) ([Markdown](https://aitinkerers.org/technologies/amazon-transcribe.md)) — 2 public demos
- [BERT](https://aitinkerers.org/technologies/bert) ([Markdown](https://aitinkerers.org/technologies/bert.md)) — 179 public demos
- [Google Cloud Speech-to-Text](https://aitinkerers.org/technologies/google-cloud-speech-to-text) ([Markdown](https://aitinkerers.org/technologies/google-cloud-speech-to-text.md)) — 2 public demos
- [GPT-3](https://aitinkerers.org/technologies/gpt-3) ([Markdown](https://aitinkerers.org/technologies/gpt-3.md)) — 191 public demos
- [GPT-4](https://aitinkerers.org/technologies/gpt-4) ([Markdown](https://aitinkerers.org/technologies/gpt-4.md)) — 529 public demos
- [IBM Watson Speech to Text](https://aitinkerers.org/technologies/ibm-watson-speech-to-text) ([Markdown](https://aitinkerers.org/technologies/ibm-watson-speech-to-text.md)) — 2 public demos
- [Kaldi](https://aitinkerers.org/technologies/kaldi) ([Markdown](https://aitinkerers.org/technologies/kaldi.md)) — 2 public demos
- [Amazon Polly](https://aitinkerers.org/technologies/amazon-polly) ([Markdown](https://aitinkerers.org/technologies/amazon-polly.md)) — 1 public demo
- [Azure Speech to Text](https://aitinkerers.org/technologies/azure-speech-to-text) ([Markdown](https://aitinkerers.org/technologies/azure-speech-to-text.md)) — 1 public demo
- [BLOOM](https://aitinkerers.org/technologies/bloom) ([Markdown](https://aitinkerers.org/technologies/bloom.md)) — 115 public demos
- [Database](https://aitinkerers.org/technologies/database) ([Markdown](https://aitinkerers.org/technologies/database.md)) — 8 public demos
- [DeepSpeech](https://aitinkerers.org/technologies/deepspeech) ([Markdown](https://aitinkerers.org/technologies/deepspeech.md)) — 1 public demo
- [eSpeak](https://aitinkerers.org/technologies/espeak) ([Markdown](https://aitinkerers.org/technologies/espeak.md)) — 1 public demo
- [Festival](https://aitinkerers.org/technologies/festival) ([Markdown](https://aitinkerers.org/technologies/festival.md)) — 1 public demo
- [Google Cloud Text-to-Speech](https://aitinkerers.org/technologies/google-cloud-text-to-speech) ([Markdown](https://aitinkerers.org/technologies/google-cloud-text-to-speech.md)) — 1 public demo
- [IBM Watson Text to Speech](https://aitinkerers.org/technologies/ibm-watson-text-to-speech) ([Markdown](https://aitinkerers.org/technologies/ibm-watson-text-to-speech.md)) — 1 public demo
- [Keras](https://aitinkerers.org/technologies/keras) ([Markdown](https://aitinkerers.org/technologies/keras.md)) — 74 public demos
- [Llama-2](https://aitinkerers.org/technologies/llama-2) ([Markdown](https://aitinkerers.org/technologies/llama-2.md)) — 227 public demos