Acoustic model
An acoustic model is the component of a speech-recognition system that maps audio features to the sounds of speech, historically paired with a separate language model that mapped sounds to likely word sequences.
The acoustic/language model split defined classical ASR for decades. Modern end-to-end systems fold both roles into one neural network, but the vocabulary survives — 'acoustic' issues still mean audio-side problems (noise, accents, microphone) as opposed to vocabulary-side ones.
Related terms
Frequently asked
What is Acoustic model?
An acoustic model is the component of a speech-recognition system that maps audio features to the sounds of speech, historically paired with a separate language model that mapped sounds to likely word sequences.
Why does Acoustic model matter?
The acoustic/language model split defined classical ASR for decades. Modern end-to-end systems fold both roles into one neural network, but the vocabulary survives — 'acoustic' issues still mean audio-side problems (noise, accents, microphone) as opposed to vocabulary-side ones.
What terms are related to Acoustic model?
Closely related concepts: Language model (in ASR), End-to-end speech recognition, Mel spectrogram — each has its own entry in this glossary.
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