Evaluation of German Automatic Speech Recognition solutions in the context of speech and language therapy support of people with aphasia
- Those who suffer from aphasia benefit from digital speech and language therapy solutions, and automatic speech recognition (ASR) has been already used for giving feedback on the correctness of the answers in naming exercises. AphaDIGITAL application is to provide German-speaking users with detailed feedback on phonemic/phonetic and semantic errors, based on automatic speech and language processing. For this purpose, open-source ASR solutions for German were evaluated on different corpora of atypical speech, including two small datasets with aphasic speech samples. Character error rate, the number of precisely recognized items and empty outputs served as evaluation metrics. The four selected models are generally robust to the deteriorated condition of speech and audio quality and consistently outperform commercial models in atypical speech recognition. Applying error acceptance threshold, additional use of phonemic error rate, and other valuable insights for ASR implementation in aphaDIGITAL are discussed.
| URN: | urn:nbn:de:kobv:526-opus4-20615 |
|---|---|
| Publisher DOI: | https://doi.org/10.3989/loquens.2025.e116 |
| Author: | Eugenia RykovaORCiD, Mathias WaltherORCiD |
| Parent Title (Spanish): | Loquens |
| Document Type: | Article |
| Language: | English |
| Year of Publication: | 2025 |
| Volume: | 12 |
| Article Number: | e116 |
| Publisher: | Centro de Ciencias Humanas y Sociales, Madrid |
| Faculties an central facilities: | Fachbereich Wirtschaft, Informatik, Recht |
| Publishing Institution: | Technische Hochschule Wildau |
| Tag: | Aphasia; automatic speech recognition; digital health; speech and language therapy |
| Source: | Rykova, E., & Walther, M. (2025). Evaluation of German Automatic Speech Recognition solutions in the context of speech and language therapy support of people with aphasia. Loquens, 12, e116. https://doi.org/10.3989/loquens.2025.e116 |
| Dewey Decimal Classification: | 0 Informatik, Informationswissenschaft, allgemeine Werke / 00 Informatik, Wissen, Systeme / 006 Spezielle Computerverfahren |
| 6 Technik, Medizin, angewandte Wissenschaften / 61 Medizin und Gesundheit / 616 Krankheiten | |
| Licence (German): | Creative Commons - CC BY - Namensnennung 4.0 International |
| Release Date: | 2025/09/30 |



