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SwissGPC v1.0 -- The Swiss German Podcasts Corpus

arXiv 2509.19866 ↗First posted 24 Sep 2025cs.CLcited by 0

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Abstract (arXiv)

We present SwissGPC v1.0, the first mid-to-large-scale corpus of spontaneous Swiss German speech, developed to support research in ASR, TTS, dialect identification, and related fields. The dataset consists of links to talk shows and podcasts hosted on Schweizer Radio und Fernsehen and YouTube, which contain approximately 5400 hours of raw audio. After segmentation and weak annotation, nearly 5000 hours of speech were retained, covering the seven major Swiss German dialect regions alongside Standard German. We describe the corpus construction methodology, including an automated annotation pipeline, and provide statistics on dialect distribution, token counts, and segmentation characteristics. Unlike existing Swiss German speech corpora, which primarily feature controlled speech, this corpus captures natural, spontaneous conversations, making it a valuable resource for real-world speech applications.

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References · 13

  1. 2022Robust Speech Recognition via Large-Scale Weak Supervisioncited by 4,057
  2. 2020wav2vec 2.0: A Framework for Self-Supervised Learning of Speech Representationscited by 3,905
  3. 2019Common Voice: A Massively-Multilingual Speech Corpuscited by 1,384
  4. 2017AISHELL-1: An Open-Source Mandarin Speech Corpus and A Speech Recognition Baselinecited by 373
  5. 2024XTTS: a Massively Multilingual Zero-Shot Text-to-Speech Modelcited by 179
  6. 2021SwissDial: Parallel Multidialectal Corpus of Spoken Swiss Germancited by 26
  7. 2022SDS-200: A Swiss German Speech to Standard German Text Corpuscited by 22
  8. 2023STT4SG-350: A Speech Corpus for All Swiss German Dialect Regionscited by 18
  9. 2020Swiss Parliaments Corpus, an Automatically Aligned Swiss German Speech to Standard German Text Corpuscited by 16
  10. 2023Spaiche: Extending State-of-the-Art ASR Models to Swiss German Dialectscited by 8
  11. 2024Does Whisper understand Swiss German? An automatic, qualitative, and human evaluationcited by 8
  12. 2023Dialect Transfer for Swiss German Speech Translationcited by 7
1 more
  1. 2023Text-to-Speech Pipeline for Swiss German -- A comparisoncited by 1

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