Fact · Languages and accents
The 2023 Interspeech paper found that diacritizing inside the speech model outperformed diacritizing the text afterward, especially when the model was fine-tuned on manually diacritized transcripts.
Checked against its source on October 17, 2026
In the source's own words
“ASR diacritization significantly outperforms text-based diacritization, particularly when the ASR model is fine-tuned with manually diacritized transcripts”
Diacritic Recognition Performance in Arabic ASR, Hanan Aldarmaki and Ahmad Ghannam, Interspeech 2023, 2023, Abstract.
Open the original- What it measures
- The authors compared three training conditions: manual diacritics, automatic diacritics and no diacritics, and measured diacritic recognition apart from overall word accuracy.
- What it does not show
- A research comparison on the authors' own training data. It shows the direction of the effect, not how a consumer app would perform.