Fact · Voice and AI
1972year
Jurafsky and Martin's 2026 draft says hidden Markov models seem to have been applied to speech independently at two laboratories around 1972.
Checked against its source on October 17, 2026
In the source's own words
“Hidden Markov models seem to have been applied to speech independently at two laboratories around 1972.”
Speech and Language Processing, Chapter 16: Automatic Speech Recognition (draft), Daniel Jurafsky and James H. Martin, Stanford University, online manuscript of the third edition, 2026, Chapter 16, history of automatic speech recognition.
Open the original- What it measures
- The hidden Markov model later became the core of statistical speech recognition. It pairs a model of how speech unfolds over time with a score for how well each state fits the sound.
- What it does not show
- The draft says the models 'seem to have been' applied then, so the date is approximate. The sentence describes early research, not a product.