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--- |
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configs: |
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- config_name: default |
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data_files: |
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- split: train |
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path: data/train-* |
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- split: test |
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path: data/test-* |
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dataset_info: |
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features: |
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- name: audio |
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dtype: |
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audio: |
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sampling_rate: 16000 |
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- name: text |
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dtype: string |
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- name: speaker_id |
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dtype: int64 |
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- name: age |
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dtype: int64 |
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- name: sex |
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dtype: string |
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- name: dialect |
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dtype: string |
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- name: recording_datetime |
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dtype: string |
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splits: |
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- name: train |
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num_bytes: 55199435558.0 |
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num_examples: 182605 |
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- name: test |
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num_bytes: 8894080220.0 |
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num_examples: 54747 |
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download_size: 5358057252 |
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dataset_size: 64093515778.0 |
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size_categories: |
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- 100K<n<1M |
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license: cc0-1.0 |
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task_categories: |
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- automatic-speech-recognition |
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- text-to-speech |
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language: |
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- da |
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pretty_name: NST-da |
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--- |
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# Dataset Card for NST-da |
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## Dataset Description |
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- **Repository:** <https://www.nb.no/sprakbanken/en/resource-catalogue/oai-nb-no-sbr-55/> |
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- **Point of Contact:** [Dan Saattrup Nielsen](mailto:[email protected]) |
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- **Size of downloaded dataset files:** 5.36 GB |
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- **Size of the generated dataset:** 64.09 GB |
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- **Total amount of disk used:** 69.45 GB |
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### Dataset Summary |
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This dataset is an upload of the [NST Danish ASR Database (16 kHz) – reorganized](https://www.nb.no/sprakbanken/en/resource-catalogue/oai-nb-no-sbr-55/). |
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The training and test splits are the original ones. |
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### Supported Tasks and Leaderboards |
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Training automatic speech recognition is the intended task for this dataset. No leaderboard is active at this point. |
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### Languages |
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The dataset is available in Danish (`da`). |
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## Dataset Structure |
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### Data Instances |
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- **Size of downloaded dataset files:** 5.36 GB |
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- **Size of the generated dataset:** 64.09 GB |
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- **Total amount of disk used:** 69.45 GB |
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An example from the dataset looks as follows. |
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``` |
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{ |
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'audio': { |
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'path': 'dk14x404-05072000-1531_u0008121.wav', |
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'array': array([ 0.00265503, 0.00248718, 0.00253296, ..., -0.00030518, |
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-0.00035095, -0.00064087]), |
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'sampling_rate': 16000 |
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}, |
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'text': 'Desuden er der en svømmeprøve, en fremmedsprogstest samt en afsluttende samtale.', |
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'speaker_id': 404, |
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'age': 24, |
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'sex': 'Female', |
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'dialect': 'Storkøbenhavn', |
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'recording_datetime': '2000-07-05T15:31:14' |
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} |
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``` |
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### Data Fields |
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The data fields are the same among all splits. |
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- `audio`: an `Audio` feature. |
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- `text`: a `string` feature. |
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- `speaker_id`: an `int64` feature. |
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- `age`: an `int64` feature. |
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- `sex`: a `string` feature. |
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- `dialect`: a `string` feature. |
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- `recording_datetime`: a `string` feature. |
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### Dataset Statistics |
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There are 183,205 samples in the training split, and 54,747 samples in the test split. |
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#### Speakers |
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There are 539 unique speakers in the training dataset and 56 unique speakers in the test dataset, where 54 of them are also present in the training set. |
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#### Age Distribution |
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#### Dialect Distribution |
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#### Sex Distribution |
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#### Transcription Length Distribution |
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## Dataset Creation |
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### Curation Rationale |
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There are not many large-scale ASR datasets in Danish. |
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### Source Data |
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The data originates from the now bankrupt company Nordisk språkteknologi (NST), whose data was transferred to the National Library of Norway, who subsequently released it into the public domain. |
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## Additional Information |
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### Dataset Curators |
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[Dan Saattrup Nielsen](https://saattrupdan.github.io/) from the [The Alexandra |
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Institute](https://alexandra.dk/) reorganised the dataset and uploaded it to the Hugging Face Hub. |
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### Licensing Information |
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The dataset is licensed under the [CC0 |
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license](https://creativecommons.org/share-your-work/public-domain/cc0/). |
