Datasets:

ltuncay
/

chime-urbansound8k

Error code:   DatasetGenerationError
Exception:    TypeError
Message:      int() argument must be a string, a bytes-like object or a real number, not 'NoneType'
Traceback:    Traceback (most recent call last):
                File "/usr/local/lib/python3.14/site-packages/datasets/builder.py", line 1539, in _prepare_split_single
                  for key, record in generator:
                                     ^^^^^^^^^
                File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 621, in wrapped
                  for item in generator(*args, **kwargs):
                              ~~~~~~~~~^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/webdataset/webdataset.py", line 131, in _generate_examples
                  for example_idx, example in enumerate(self._get_pipeline_from_tar(tar_path, tar_iterator)):
                                              ~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/webdataset/webdataset.py", line 32, in _get_pipeline_from_tar
                  for filename, f in tar_iterator:
                                     ^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/utils/track.py", line 49, in __iter__
                  for x in self.generator(*self.args):
                           ~~~~~~~~~~~~~~^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/utils/file_utils.py", line 1419, in _iter_from_urlpath
                  with xopen(urlpath, "rb", download_config=download_config, block_size=0) as f:
                       ~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/utils/file_utils.py", line 976, in xopen
                  file_obj = fs.open(paths[0], mode)
                File "<string>", line 3, in open
                File "/usr/local/lib/python3.14/unittest/mock.py", line 1176, in __call__
                  return self._mock_call(*args, **kwargs)
                         ~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/unittest/mock.py", line 1180, in _mock_call
                  return self._execute_mock_call(*args, **kwargs)
                         ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/unittest/mock.py", line 1247, in _execute_mock_call
                  result = effect(*args, **kwargs)
                File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 794, in wrapped
                  tracker.files[urlpath] = {"read": 0, "size": int(f.size)}
                                                               ~~~^^^^^^^^
              TypeError: int() argument must be a string, a bytes-like object or a real number, not 'NoneType'
              
              The above exception was the direct cause of the following exception:
              
              Traceback (most recent call last):
                File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 1379, in compute_config_parquet_and_info_response
                  parquet_operations, partial, estimated_dataset_info = stream_convert_to_parquet(
                                                                        ~~~~~~~~~~~~~~~~~~~~~~~~~^
                      builder, max_dataset_size_bytes=max_dataset_size_bytes
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                  )
                  ^
                File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 956, in stream_convert_to_parquet
                  builder._prepare_split(split_generator=splits_generators[split], file_format="parquet")
                  ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/builder.py", line 1401, in _prepare_split
                  for job_id, done, content in self._prepare_split_single(
                                               ~~~~~~~~~~~~~~~~~~~~~~~~~~^
                      gen_kwargs=gen_kwargs, job_id=job_id, **_prepare_split_args
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                  ):
                  ^
                File "/usr/local/lib/python3.14/site-packages/datasets/builder.py", line 1579, in _prepare_split_single
                  raise DatasetGenerationError("An error occurred while generating the dataset") from e
              datasets.exceptions.DatasetGenerationError: An error occurred while generating the dataset

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End of preview.

CHIME · UrbanSound8K

This is a source-preserving prepared candidate, not a scientifically admitted CHIME benchmark release. It repackages the selected upstream release into split-specific WebDataset TAR shards with native audio and per-example JSON. A Parquet index permits metadata filtering without downloading audio shards.

Source and selected scope

Upstream: UrbanSound8K.
Pinned source release: 1203745.
Selection: Official Zenodo original archive is openly downloadable; the old website contact form is not required for this deposit.
Original license/access conditions: CC-BY-NC-4.0; per-source Freesound attribution retained. Public direct HTTPS; preserve all attribution and license notices. No access account or signed agreement.
Source notes: Acquire only pinned objects. Preserve native audio and raw source labels. Subset and quality rules are in the matching decision; scientific admission is pending.

Original authors, licensors and recording contributors retain their rights. This preparation was assembled for public noncommercial research access; this repository does not grant broader rights than the original sources. Preserve per-recording attribution and notices. provenance/ contains original annotations/docs/licenses, source provenance and the redistribution audit. FSD50K/Clotho audio has per-recording terms; Clotho captions retain the complete custom Tampere experimental/noncommercial license. The CHIME code license does not apply to these data.

Representation and preservation

There are 8,732 audio assets, 7,088,643,558 stored-audio bytes and 7,088,862,663 decoded-PCM-equivalent bytes. Native sample rate, duration and channel count are retained. No loudness normalization, silence trimming, resampling or downmixing is applied.

Each sample retains its native audio codec (WAV/FLAC/MP3/OGG or another supported native container). Each payload is accompanied by <key>.json in an ordinary TAR. The JSON contains split, stored audio metadata, provenance, source groups and source targets. manifest.jsonl also records shard/member offsets and checksums. metadata.parquet provides audio and shard columns, common source/group/license columns, and exact arbitrary annotations in metadata_json (decode with json.loads). It does not duplicate audio payloads. Keeping heterogeneous annotations as JSON preserves empty objects and differing target schemas without Arrow type coercion. release.json hashes the audio shards and record manifest, and publication.json inventories all published files including attribution assets.

CHiME-3 background recordings interleave six synchronized native mono PCM16 channels into one six-channel PCM16 WAV per session, with exact decoded-sample checks and an explicit channel map. The excluded CHiME speech corpus is not included. Other audio payloads are copied byte for byte.

Source splits

fold1: 873 original audio assets.
fold10: 837 original audio assets.
fold2: 888 original audio assets.
fold3: 925 original audio assets.
fold4: 990 original audio assets.
fold5: 936 original audio assets.
fold6: 823 original audio assets.
fold7: 838 original audio assets.
fold8: 806 original audio assets.
fold9: 816 original audio assets.

These are original source partitions or explicitly unspecified/background partitions. ESC-50 retains five official folds; no fixed benchmark train/test assignment is invented. VocalSet's split is the supplied technique-classification singer protocol, not a universal task protocol. Background noise is not converted into artificial word or silence examples. Linked views/channels share provenance groups.

Scientific limitations

Scientific admission remains pending. Native file integrity and packaging checks do not establish label correctness, perceptual deduplication, contamination freedom or benchmark validity. Existing upstream annotation errata and ambiguity are retained/documented. The source audit found declared Freesound ID overlaps within some official folds/partitions and across ESC-50, FSD50K and Clotho; FSD50K train/validation also share uploaders. Use the supplied source IDs, group metadata and provenance/source-audit.json when defining an evaluation protocol. Do not claim these candidate splits are universally leakage-free. Scores from this repository alone are not official CHIME scores.

Loading

Pin an immutable Hub commit revision in experiments. A generic Hugging Face WebDataset loader can read the shard configurations:

from datasets import load_dataset
samples = load_dataset("ltuncay/chime-urbansound8k", revision="<commit-sha>", streaming=True)

For local source-native decoding and checksum verification, use CHIME's iter_release(path, split=..., verify_hashes=True). Its audio arrays have shape [frames, channels]; the evaluated model owns its preprocessing. Download only selected shards/index files when appropriate; benchmark execution must not silently fetch data.

Provenance and citation

Cite the upstream dataset and recording authors as specified in the original documentation under provenance/. This preparation does not claim authorship of the source recordings or annotations. Exact upstream objects, checksums, release selection, preparation metadata and source URLs are recorded in release.json. Source Zenodo metadata/citations are retained when available. See the CHIME project implementation brief and scientific paper for the evolving evaluation protocol.

CHIME v1 benchmark usage

Do not train on CHIME evaluation data: 8732 records in the release split(s) fold1, fold10, fold2, fold3, fold4, fold5, fold6, fold7, fold8, fold9, listed one key per line in provenance/benchmark-v1/eval-keys.txt. Models submitted to CHIME must not see these recordings (or their source recordings) during pretraining or fine-tuning.

Task	Family	Metric	Folds	Train	Validation	Test (eval)
`urbansound8k-classification`	classification	balanced_accuracy	10	fold1, fold10, fold2, fold3, fold4, fold5, fold6, fold7, fold8, fold9	fold1, fold10, fold2, fold3, fold4, fold5, fold6, fold7, fold8, fold9	fold1, fold10, fold2, fold3, fold4, fold5, fold6, fold7, fold8, fold9

Exact per-record partition assignments (including records excluded from training because they share a source with evaluation data, and digitally silent assets) are in provenance/benchmark-v1/<task>.jsonl; the frozen task definitions are in provenance/benchmark-v1/usage.json. Splits never depend on the evaluation seed.

Downloads last month: 78

Total file size:

7.13 GB

json dict	__key__ string	__url__ string
{ "audio": { "channel_order": "source_native", "channels": 2, "format": "WAVEX", "frames": 192000, "member": "urbansound8k-00236bd2f906deef740eacb899864f40.wav", "pcm_bytes": 1152000, "sample_rate": 48000, "sample_width": 3, "sha256": "e39b919605be7c1920fa13656610d497bae2af1950ef2e...	urbansound8k-00236bd2f906deef740eacb899864f40	hf://datasets/ltuncay/chime-urbansound8k@6cb9f177a64f7f597b8ee8c7577c8c36e135e832/data/fold1/shard-000000.tar
{ "audio": { "channel_order": "source_native", "channels": 2, "format": "WAV", "frames": 176400, "member": "urbansound8k-0040376b681e465f5d69d0046732606b.wav", "pcm_bytes": 705600, "sample_rate": 44100, "sample_width": 2, "sha256": "54ae95e570e1bb481a1eebce0cb048b1ae6b83fa58d844070...	urbansound8k-0040376b681e465f5d69d0046732606b	hf://datasets/ltuncay/chime-urbansound8k@6cb9f177a64f7f597b8ee8c7577c8c36e135e832/data/fold1/shard-000000.tar
{ "audio": { "channel_order": "source_native", "channels": 2, "format": "WAVEX", "frames": 176400, "member": "urbansound8k-008fb6802cab13895913f294a7eb1154.wav", "pcm_bytes": 1058400, "sample_rate": 44100, "sample_width": 3, "sha256": "09e4468b500a63b39e316927040c2d9e932eb590570538...	urbansound8k-008fb6802cab13895913f294a7eb1154	hf://datasets/ltuncay/chime-urbansound8k@6cb9f177a64f7f597b8ee8c7577c8c36e135e832/data/fold1/shard-000000.tar
{ "audio": { "channel_order": "source_native", "channels": 2, "format": "WAV", "frames": 176400, "member": "urbansound8k-00b1352b309885b08602602b2216fecd.wav", "pcm_bytes": 705600, "sample_rate": 44100, "sample_width": 2, "sha256": "36370787ff36654e55b3e5dd143a3d8575aa84eb85865d872...	urbansound8k-00b1352b309885b08602602b2216fecd	hf://datasets/ltuncay/chime-urbansound8k@6cb9f177a64f7f597b8ee8c7577c8c36e135e832/data/fold1/shard-000000.tar
{ "audio": { "channel_order": "source_native", "channels": 2, "format": "WAVEX", "frames": 384000, "member": "urbansound8k-00c4c8841a4aa9ff33cf617d8be6f4f2.wav", "pcm_bytes": 2304000, "sample_rate": 96000, "sample_width": 3, "sha256": "854f33ecfd3f62e89e2575854de5371f2f5f90dc29bb3e...	urbansound8k-00c4c8841a4aa9ff33cf617d8be6f4f2	hf://datasets/ltuncay/chime-urbansound8k@6cb9f177a64f7f597b8ee8c7577c8c36e135e832/data/fold1/shard-000000.tar
{ "audio": { "channel_order": "source_native", "channels": 2, "format": "WAVEX", "frames": 384000, "member": "urbansound8k-00d80fd680bfba1129fef576ed2a8929.wav", "pcm_bytes": 2304000, "sample_rate": 96000, "sample_width": 3, "sha256": "9b70b242519c222ea147d5b89a45fac2b9e56e78d10771...	urbansound8k-00d80fd680bfba1129fef576ed2a8929	hf://datasets/ltuncay/chime-urbansound8k@6cb9f177a64f7f597b8ee8c7577c8c36e135e832/data/fold1/shard-000000.tar
{ "audio": { "channel_order": "source_native", "channels": 2, "format": "WAV", "frames": 96000, "member": "urbansound8k-01015fbeee2958292038e3c9ba2302d9.wav", "pcm_bytes": 384000, "sample_rate": 24000, "sample_width": 2, "sha256": "09b8f890b83e3f6a078d9c8224b18ea289be0da0e3414f1084...	urbansound8k-01015fbeee2958292038e3c9ba2302d9	hf://datasets/ltuncay/chime-urbansound8k@6cb9f177a64f7f597b8ee8c7577c8c36e135e832/data/fold1/shard-000000.tar
{ "audio": { "channel_order": "source_native", "channels": 2, "format": "WAVEX", "frames": 192000, "member": "urbansound8k-0120fb17cef270780972abd877d3f4e7.wav", "pcm_bytes": 1152000, "sample_rate": 48000, "sample_width": 3, "sha256": "508b6b0aa9b07f277e64dff3913b412cebd072d4d00f6a...	urbansound8k-0120fb17cef270780972abd877d3f4e7	hf://datasets/ltuncay/chime-urbansound8k@6cb9f177a64f7f597b8ee8c7577c8c36e135e832/data/fold1/shard-000000.tar
{ "audio": { "channel_order": "source_native", "channels": 2, "format": "WAV", "frames": 192000, "member": "urbansound8k-016e957bf3e7995ab521e76baa41aeb5.wav", "pcm_bytes": 768000, "sample_rate": 48000, "sample_width": 2, "sha256": "7bc6808be44416a9e4c6e9107bb98a55b5a6923cbf33b4149...	urbansound8k-016e957bf3e7995ab521e76baa41aeb5	hf://datasets/ltuncay/chime-urbansound8k@6cb9f177a64f7f597b8ee8c7577c8c36e135e832/data/fold1/shard-000000.tar
{ "audio": { "channel_order": "source_native", "channels": 2, "format": "WAV", "frames": 121440, "member": "urbansound8k-0171f4e40a6a14482e8aa743b14cf148.wav", "pcm_bytes": 485760, "sample_rate": 48000, "sample_width": 2, "sha256": "468a035a5346be98e5b7c860767807392c5352c11880117e9...	urbansound8k-0171f4e40a6a14482e8aa743b14cf148	hf://datasets/ltuncay/chime-urbansound8k@6cb9f177a64f7f597b8ee8c7577c8c36e135e832/data/fold1/shard-000000.tar
{ "audio": { "channel_order": "source_native", "channels": 2, "format": "WAV", "frames": 38681, "member": "urbansound8k-02a2714e7e7407d8cfb109778ab78fe4.wav", "pcm_bytes": 154724, "sample_rate": 44100, "sample_width": 2, "sha256": "7dd94089acb1917fd288ad6a9af499bdeb4b80adf4b0f00ac2...	urbansound8k-02a2714e7e7407d8cfb109778ab78fe4	hf://datasets/ltuncay/chime-urbansound8k@6cb9f177a64f7f597b8ee8c7577c8c36e135e832/data/fold1/shard-000000.tar
{ "audio": { "channel_order": "source_native", "channels": 2, "format": "WAVEX", "frames": 192000, "member": "urbansound8k-02e86e95628bddb5e9187b3fc7bc0fcf.wav", "pcm_bytes": 1152000, "sample_rate": 48000, "sample_width": 3, "sha256": "6032009690674bcc9b5fc30c1db06a0461dfe6a521da85...	urbansound8k-02e86e95628bddb5e9187b3fc7bc0fcf	hf://datasets/ltuncay/chime-urbansound8k@6cb9f177a64f7f597b8ee8c7577c8c36e135e832/data/fold1/shard-000000.tar
{ "audio": { "channel_order": "source_native", "channels": 2, "format": "WAV", "frames": 176400, "member": "urbansound8k-030177bea8a5c5588b60002c8c4572b9.wav", "pcm_bytes": 705600, "sample_rate": 44100, "sample_width": 2, "sha256": "f5be39ead5c160e38a7595874ebe9ada5ff33eab96c511692...	urbansound8k-030177bea8a5c5588b60002c8c4572b9	hf://datasets/ltuncay/chime-urbansound8k@6cb9f177a64f7f597b8ee8c7577c8c36e135e832/data/fold1/shard-000000.tar
{ "audio": { "channel_order": "source_native", "channels": 2, "format": "WAVEX", "frames": 176400, "member": "urbansound8k-032e9748c430167ebd6841e4f3aed7a1.wav", "pcm_bytes": 1058400, "sample_rate": 44100, "sample_width": 3, "sha256": "6dc0b3228f4f498c743e00493cf1386347b0110ab3355b...	urbansound8k-032e9748c430167ebd6841e4f3aed7a1	hf://datasets/ltuncay/chime-urbansound8k@6cb9f177a64f7f597b8ee8c7577c8c36e135e832/data/fold1/shard-000000.tar
{ "audio": { "channel_order": "source_native", "channels": 2, "format": "WAV", "frames": 176400, "member": "urbansound8k-033cc2ff727043006c5445d83c70d1e4.wav", "pcm_bytes": 705600, "sample_rate": 44100, "sample_width": 2, "sha256": "770eb1fa7342e7a46bd3354206c17f155065ac40c8ef5eb82...	urbansound8k-033cc2ff727043006c5445d83c70d1e4	hf://datasets/ltuncay/chime-urbansound8k@6cb9f177a64f7f597b8ee8c7577c8c36e135e832/data/fold1/shard-000000.tar
{ "audio": { "channel_order": "source_native", "channels": 2, "format": "WAVEX", "frames": 192000, "member": "urbansound8k-035463f4e72e504bebab0c6d4e933b4e.wav", "pcm_bytes": 1152000, "sample_rate": 48000, "sample_width": 3, "sha256": "00bd754b4b7e265d466317c4cc639edcf20934592814ab...	urbansound8k-035463f4e72e504bebab0c6d4e933b4e	hf://datasets/ltuncay/chime-urbansound8k@6cb9f177a64f7f597b8ee8c7577c8c36e135e832/data/fold1/shard-000000.tar
{ "audio": { "channel_order": "source_native", "channels": 2, "format": "WAV", "frames": 192000, "member": "urbansound8k-04efd7571aca7dc5f167d832d3859804.wav", "pcm_bytes": 1536000, "sample_rate": 48000, "sample_width": 4, "sha256": "a79d880484004598072ff524ff6e6afc311451f40c170136...	urbansound8k-04efd7571aca7dc5f167d832d3859804	hf://datasets/ltuncay/chime-urbansound8k@6cb9f177a64f7f597b8ee8c7577c8c36e135e832/data/fold1/shard-000000.tar
{ "audio": { "channel_order": "source_native", "channels": 2, "format": "WAVEX", "frames": 39037, "member": "urbansound8k-04f38b9490023fb6de9098144efe890c.wav", "pcm_bytes": 234222, "sample_rate": 44100, "sample_width": 3, "sha256": "f1020a339dfea2a314c5c7ffd2e2425eb4ac55df293c1e1e...	urbansound8k-04f38b9490023fb6de9098144efe890c	hf://datasets/ltuncay/chime-urbansound8k@6cb9f177a64f7f597b8ee8c7577c8c36e135e832/data/fold1/shard-000000.tar
{ "audio": { "channel_order": "source_native", "channels": 2, "format": "WAV", "frames": 176400, "member": "urbansound8k-050d8dc8e7a9d881e988cb78538a6391.wav", "pcm_bytes": 705600, "sample_rate": 44100, "sample_width": 2, "sha256": "243fc54d1041bdaad1103a7c071ba7ed912e3e12a856815fc...	urbansound8k-050d8dc8e7a9d881e988cb78538a6391	hf://datasets/ltuncay/chime-urbansound8k@6cb9f177a64f7f597b8ee8c7577c8c36e135e832/data/fold1/shard-000000.tar
{ "audio": { "channel_order": "source_native", "channels": 2, "format": "WAV", "frames": 176400, "member": "urbansound8k-0519d73e93c76d8227ecfa972e5fc4b0.wav", "pcm_bytes": 705600, "sample_rate": 44100, "sample_width": 2, "sha256": "d335f0394594dbf540ad227c9b9f35762c2b8653e28e5996a...	urbansound8k-0519d73e93c76d8227ecfa972e5fc4b0	hf://datasets/ltuncay/chime-urbansound8k@6cb9f177a64f7f597b8ee8c7577c8c36e135e832/data/fold1/shard-000000.tar
{ "audio": { "channel_order": "source_native", "channels": 2, "format": "WAV", "frames": 176400, "member": "urbansound8k-052a89c6aef7163837325504efdd96dd.wav", "pcm_bytes": 705600, "sample_rate": 44100, "sample_width": 2, "sha256": "4cc25870dc3dd4e89f104b8d1a187222f2cbeff6ded9c52e4...	urbansound8k-052a89c6aef7163837325504efdd96dd	hf://datasets/ltuncay/chime-urbansound8k@6cb9f177a64f7f597b8ee8c7577c8c36e135e832/data/fold1/shard-000000.tar
{ "audio": { "channel_order": "source_native", "channels": 2, "format": "WAV", "frames": 176400, "member": "urbansound8k-0571ef42c03e227cecb5a5a889c8856c.wav", "pcm_bytes": 705600, "sample_rate": 44100, "sample_width": 2, "sha256": "d8953dd958c9fa8200365730a6a300b0857cf9ed0816de0dd...	urbansound8k-0571ef42c03e227cecb5a5a889c8856c	hf://datasets/ltuncay/chime-urbansound8k@6cb9f177a64f7f597b8ee8c7577c8c36e135e832/data/fold1/shard-000000.tar
{ "audio": { "channel_order": "source_native", "channels": 2, "format": "WAVEX", "frames": 81600, "member": "urbansound8k-057b12f5ac585b82f62ff1f50774f963.wav", "pcm_bytes": 489600, "sample_rate": 48000, "sample_width": 3, "sha256": "ef395bc4b7321ef575966aaa2332c7008730a6d199309b10...	urbansound8k-057b12f5ac585b82f62ff1f50774f963	hf://datasets/ltuncay/chime-urbansound8k@6cb9f177a64f7f597b8ee8c7577c8c36e135e832/data/fold1/shard-000000.tar
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