---
title: "Automatic Speech Recognition Biases in Newcastle English: an"
description: "This study examines how ASR handles Newcastle (Tyneside) English, an accent that… 31.95% WER. 35 references, cited by 2 papers here."
authors: ["Dana Serditova", "Kevin Tang", "Jochen Steffens"]
year: 2025
venue: "arXiv:2506.16558 · Proc. Interspeech 2025 (2025) 3204-3208"
source: "https://arxiv.org/abs/2506.16558"
doi: "10.21437/interspeech.2025-1973"
arxiv: "2506.16558"
licence: "CC BY-NC-ND 4.0 (arXiv)"
licence_url: "http://creativecommons.org/licenses/by-nc-nd/4.0/"
summary_licence: "Elamur Cosmic License"
canonical: "https://research.elamur.ai/free/en/papers/serditova-2025-automatic-speech-recognition-biases-newcastle/"
---
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# Automatic Speech Recognition Biases in Newcastle English: an Error Analysis

**Authors:** [Dana Serditova](https://md.research.elamur.ai/free/en/authors/dana-serditova/), [Kevin Tang](https://md.research.elamur.ai/free/en/authors/kevin-tang/) and Jochen Steffens · **Year:** 2025 · **Venue:** [arXiv:2506.16558 · Proc. Interspeech 2025 (2025) 3204-3208](https://md.research.elamur.ai/free/en/venues/interspeech-usb/) ([Interspeech 2025](https://md.research.elamur.ai/free/en/venues/interspeech-usb/2025/)) · **Licence:** [CC BY-NC-ND 4.0 (arXiv)](http://creativecommons.org/licenses/by-nc-nd/4.0/)

**Links:** [Publisher's page](https://doi.org/10.21437/interspeech.2025-1973) · [PDF](https://arxiv.org/pdf/2506.16558) · [DOI 10.21437/interspeech.2025-1973](https://doi.org/10.21437/interspeech.2025-1973) · [arXiv 2506.16558](https://arxiv.org/abs/2506.16558) · [OpenAlex](https://openalex.org/W4415432974)

**Citations:** 23 citations (OpenAlex, 2026-10-14) · [2](https://md.research.elamur.ai/free/en/papers/serditova-2025-automatic-speech-recognition-biases-newcastle/cited-by/) in our library, of the 149,439 papers whose bibliographies we read

## Summary
Commercial speech recognisers are known to be less accurate for some racial, gender and age groups, but regional dialect bias has received less attention. This study examines how ASR handles Newcastle (Tyneside) English, an accent that earlier work identified as one of the hardest in the UK for these systems. The authors pre-tested four recognisers on DECTE and chose Rev AI as the strongest. They then ran a two-step analysis. First, two sociophoneticians listened to a subsample and hand-coded every error that dialect could explain, using a two-level taxonomy of error types. Second, scripts aligned ASR output with reference transcripts across the whole corpus to find misrecognitions of the local pronouns "yous" and "wor". Mixed-effects regression tested age and gender while controlling for recording noise. Recognition errors tracked specific dialect features closely, while speaker age and gender mattered less. The paper argues that training data needs more dialect variety and that linguistically informed error analysis is needed to diagnose bias.

## Key points
- Data: DECTE, a diachronic collection of electronically stored Tyneside English recordings, containing 72 hours of spontaneous speech from 160 speakers in 99 files, all transcribed in full by humans.
- System selection used 10% of the data. Google Cloud Speech-to-Text and Deepgram scored roughly 40–60% WER and were dropped. Rev AI then beat CrisperWhisper by about 10 WER points on most recordings, and Rev AI (English UK) averaged 31.95% WER over the full corpus.
- The manual stage covered 16 files and 32 speakers and yielded 1,076 dialect-attributable errors. These fell into five types: phonological, lexical, standardisation, morphosyntactic and spelling.
- Pronoun errors made up about one third of morphosyntactic errors, which motivated the corpus-wide case study of "yous" and "wor".
- Male speakers accounted for more errors than female speakers (53.7% vs 46.3%, χ² = 11.6, p \< 0.001). Noise was estimated with WADA-SNR and entered as a covariate in glmer models that included a random effect for speaker.

## Interesting ideas
- The authors define a separate "standardisation" error class for cases where the system silently swaps a dialect form for a standard one (e.g., "me life" → "my life"), keeping these apart from plain misrecognitions; this separates normalisation bias from noise.
- They pair a small, finely coded manual pass with a scripted, corpus-wide extraction aimed only at the most frequent problem category, which keeps expensive annotation small while still producing statistics on the full data.
- They put recording noise (SNR) into the model as a covariate and treat speaker as a random effect, so demographic effects are not confused with recording quality or individual habits.
- The paper notes that without tagging dialect features, legitimate regional forms get counted as errors, which distorts evaluation.
- Regional pronouns carry different person/number meanings: "yous" is 2nd plural, "wor" means "our", and object "us" can mean "me". Mistranscribing them changes who is being referred to.

## For Mova

How these ideas could serve Mova, our small open language model — its files, stages and tests:

- **I1** (tokens): The en crate could map forms like "yous", "wor", "div", "gan" and possessive "me" to standard lemmas while keeping a dialect-variant feature, instead of treating them as typos or overwriting them.
- **I2** (learn): Hand-audit a sample of parser or frame failures, group them into a taxonomy, then write targeted extractors for the biggest bucket across all silver data.
- **I3** (learn): When comparing accuracy across text genres or sources, control for nuisance factors such as OCR noise or sentence length, and group by document, so that apparent bias is not an artefact.
- **I4** (tree): During UD dialect conversion, mark non-standard constructions such as unmarked plurals ("six month") and "they've broke it" so the parser is not penalised against a treebank that assumes standard morphology.
- **I5** (frames): Coreference and role assignment could use a small dialect pronoun lexicon so that object "us" can resolve to the singular speaker and "yous" to a group of addressees.

*Our summary of the paper, in our own words — not its text. The work belongs to its authors; read it at the links above.*

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## Cite

Cite as: Dana Serditova, Kevin Tang and Jochen Steffens. 2025. Automatic Speech Recognition Biases in Newcastle English: an Error Analysis. arXiv:2506.16558 · Proc. Interspeech 2025 (2025) 3204-3208.

The paper itself, not this page. BibTeX from the library's record of the work.

```bibtex
@misc{serditova2025automatic,
  title = {{Automatic Speech Recognition Biases in Newcastle English: an Error Analysis}},
  author = {Dana Serditova, Kevin Tang and Jochen Steffens},
  year = {2025},
  doi = {10.21437/interspeech.2025-1973},
  eprint = {2506.16558},
  archivePrefix = {arXiv},
  url = {https://doi.org/10.21437/interspeech.2025-1973}
}
```

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## References

35 references, 1 of them with a card of ours. ↗ leads to the work, «find» searches for one we have no id for yet.

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33. L. Bauernfeind, C. Ahrens, J. Grama, R. Skarnitzl, and J. Volı́n, “Change across the lifespan in goat: Evidence from a panel study of Tyneside English,” in Proceedings of the 20th International Congress of Phonetic Science. Guarant International, 2023, pp. 2064–2068. [find](https://scholar.google.com/scholar?q=L%2E+Bauernfeind%2C+C%2E+Ahrens%2C+J%2E+Grama%2C+R%2E+Skarnitzl%2C+and+J%2E+Vol%C4%B1%CC%81n%2C+%E2%80%9CChange+across+the+lifespan+in+goat%3A+Evidence+from+a+panel+study+of+Tyneside+English%2C%E2%80%9D+in+Proceedings+of+the+20th+International+Congre)
34. J. Grama, M. E. Eiswirth, I. Buchstaller, R. Skarnitzl, and J. Volı́n, “Tracking creak from early to late adulthood: A panel study from the North East of England,” in Proceedings of the 20th International Congress of Phonetic Science. Guarant International, 2023, pp. 2049–2053. [find](https://scholar.google.com/scholar?q=J%2E+Grama%2C+M%2E+E%2E+Eiswirth%2C+I%2E+Buchstaller%2C+R%2E+Skarnitzl%2C+and+J%2E+Vol%C4%B1%CC%81n%2C+%E2%80%9CTracking+creak+from+early+to+late+adulthood%3A+A+panel+study+from+the+North+East+of+England%2C%E2%80%9D+in+Proceedings+of+the+20th+Internati)
35. J. Grieve, S. Bartl, M. Fuoli, J. Grafmiller, W. Huang, A. Jawerbaum, A. Murakami, M. Perlman, D. Roemling, and B. Winter, “The sociolinguistic foundations of language modeling,” Frontiers in Artificial Intelligence, vol. 7, 2025. John [find](https://scholar.google.com/scholar?q=J%2E+Grieve%2C+S%2E+Bartl%2C+M%2E+Fuoli%2C+J%2E+Grafmiller%2C+W%2E+Huang%2C+A%2E+Jawerbaum%2C+A%2E+Murakami%2C+M%2E+Perlman%2C+D%2E+Roemling%2C+and+B%2E+Winter%2C+%E2%80%9CThe+sociolinguistic+foundations+of+language+modeling%2C%E2%80%9D+Frontiers+in+Artifici)

*Updated 2 November 2026*