# Language Model Fusion in ASR

> Source: https://sukruyusufkaya.com/en/glossary/language-model-fusion-in-asr
> Updated: 2026-05-13T21:13:04.351Z
> Type: glossary
> Category: ses-konusma-audio-ai
**TLDR:** An approach that incorporates external language model knowledge to make speech recognition output more linguistically accurate.

<p>Language model fusion can make a major quality difference, especially in domain-specific speech recognition systems. When acoustically similar but linguistically different candidates exist, an external language model provides a strong guidance signal. This is highly valuable in clinical text, call-center terminology, and proper-name-heavy scenarios. It clearly shows that speech recognition is not only an acoustic decoding problem but also a linguistic decision problem.</p>