Automatic speech recognition processes an audio signal and predicts the words being spoken. Modern systems learn acoustic and language patterns from large datasets and may handle punctuation, multiple speakers, noisy environments and several languages.
Low latency matters for captions, voice interfaces and live transcription because users need results while speech is still occurring. Accuracy can vary across accents, languages, audio conditions and specialist vocabulary, so important transcripts still benefit from review.
Acronyms and aliases
ASR acronymspeech-to-text synonymspeech recognition variant
General terms
Related terms
Frequently asked questions
How does automatic speech recognition work?
The system converts audio into numerical features and uses a trained model to map those patterns to tokens or words. A language component helps choose plausible sequences.
What affects speech-recognition accuracy?
Noise, microphone quality, overlapping speakers, accent coverage, language support and specialist terms can all affect accuracy. More context and domain adaptation can help.
