Home › Learn › What Is Speech Recognition? — How It Works
Speech recognition (also called automatic speech recognition or ASR) is the technology that converts spoken language into written text. It powers voice assistants, transcription apps, and voice-controlled devices.
How speech recognition works
The audio is digitised and broken into small segments
Each segment is analysed for phonemes (the smallest units of sound)
A language model predicts the most likely words based on context
The output is post-processed to add punctuation and formatting
Modern deep learning models achieve near-human accuracy
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