Europe · Germany
German conversational speech dataset
1,000 hours of spontaneous German conversations recorded in Germany across 50 vetted native speakers. Dual-channel audio with time-aligned transcripts, speaker metadata (age, gender, region, device), and full chain-of-consent documentation. Licensed for commercial ASR, TTS, and voice AI training.
Dataset specifications
| Language | German |
|---|---|
| Recorded in | Germany |
| Speech type | Spontaneous two-person conversations |
| Volume | 1,000 hours |
| Speakers | 50 vetted native speakers |
| Audio | Dual-channel (one channel per speaker) |
| Transcripts | Time-aligned, human-verified |
| Metadata | Age, gender, region, recording device |
| License | Commercial (training & evaluation) |
| Price | $95 per hour of audio |
Need more hours, another dialect or your own recording setup? We collect speech data to spec.
Built for
Training and evaluating speech models that must handle real German speech:
- Automatic speech recognition (ASR / STT)
- Text-to-speech & voice synthesis prosody
- Voice agents and IVR for Germany
- Speaker diarization & turn-taking models
- Speech LLM / audio-understanding fine-tuning
Why conversational data?
Models trained on read speech consistently underperform on spontaneous audio. Disfluencies, overlap, and natural speech rates aren’t in the training distribution. This dataset closes that gap for German. Read more in our guide to conversational vs. scripted speech data.
Free samples
Audit the German data yourself
Share your company email and we’ll email you representative audio, matching transcripts, and the metadata schema. Check audio quality, transcript accuracy, and speaker diversity before you spend a dollar.
Public alternatives
Public German speech data vs. this dataset
| Source | What it is | License | Commercial training |
|---|---|---|---|
| CALLHOME German Speech (LDC97S43) (opens in a new tab)Linguistic Data Consortium (LDC) | Unscripted telephone calls between native German speakers, placed from North America to overseas. | LDC User Agreement for Non-Members (fee applies; noncommercial research and education only); commercial use requires paid LDC for-profit membership | Paid license |
| Multilingual LibriSpeech (MLS) German (opens in a new tab)Meta AI (via OpenSLR) | German read audiobooks from LibriVox with transcripts. | CC BY 4.0 | Allowed |
| VoxPopuli German (transcribed) (opens in a new tab)Meta AI | Transcribed German speeches from European Parliament event recordings, 2009 to 2020. | CC0 for VoxPopuli data; the raw audio falls under the European Parliament legal notice (reuse allowed if the entire item is reproduced and the source acknowledged) | Unclear |
| Mozilla Common Voice German (Scripted and Spontaneous Speech) (opens in a new tab)Mozilla Common Voice (via Mozilla Data Collective) | Volunteers read German sentences aloud; a separate Spontaneous Speech release has unscripted answers to questions. | CC0 1.0 | Allowed |
CALLHOME German is LDC-licensed calls placed from North America; the free sets are audiobooks, parliament speeches and volunteer clips. This dataset is two-person conversation recorded in Germany, licensed commercially.
Licenses as published by each source, checked October 2026. Check the current terms before use.
FAQ
Frequently asked questions
What does the German speech dataset include?
1,000 hours of spontaneous two-person conversations from 50 vetted native speakers recorded in Germany, delivered as dual-channel audio with time-aligned transcripts, speaker metadata (age, gender, region, device), and consent documentation.
What makes German hard for speech recognition?
German builds compound words freely, so a model keeps meeting long words it has never seen, like "Kundendienstmitarbeiter". Spoken German runs from standard Hochdeutsch to strong regional accents in Bavaria, Saxony and the north. Separable verbs that split across a sentence make language modelling harder too.
Is there free German speech data?
Yes, Multilingual LibriSpeech German and Mozilla Common Voice German are free for commercial use. CALLHOME German Speech needs a paid license, and VoxPopuli German has unclear terms. This dataset is spontaneous two-person conversation recorded in Germany, with speaker metadata, one channel per speaker and signed commercial-use consent.
Can I use this German dataset commercially?
Yes. The dataset is licensed for commercial use, including training ASR, TTS, and other voice-AI models. Every speaker has signed explicit commercial-use consent, and we provide the full consent chain for your legal review.
How much does the German speech dataset cost?
Pricing is $95 per hour of audio. Volume discounts are available for full-dataset and multi-language purchases. Contact us for a quote.
Can I evaluate samples before buying?
Yes. Request samples with your company email, and we'll email you representative audio files and matching transcripts so your team can audit quality before committing.
$85/hr