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Fact · Speech recognition

PocketSphinx, the lightweight recognizer in the CMU Sphinx family, descends from older Carnegie Mellon University systems that were released as free software under a BSD-like license.

Checked against its source on October 17, 2026

In the source's own words

“released as free software under a BSD-like license thanks to the efforts of Kevin Lenzo”

PocketSphinx (CMU Sphinx) README, CMU Sphinx project, GitHub (cmusphinx/pocketsphinx), n.d., AUTHORS section of the README.

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What it measures
The README's authors section explains where the code came from.
What it does not show
The sentence describes the history of the code. The README does not give accuracy figures, so this fact says nothing about how well Sphinx recognizes speech.

Source

CMU Sphinx code was released under a BSD-like license | Yap