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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.

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Metadaten
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
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