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PyPI · #5829 most downloaded on PyPI
Data preparation for speech processing models training.
Last release 24 days ago
11 Sep 2026
Ships fairly regularly
a new release about every 2 months
Some releases are documented
notes for 17 of 58 stable releases
Nothing withdrawn
no release was ever pulled
6 years old
65 releases · first in 2020
One column per quarter.
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Make lilcom optional and fix failing unit tests on MacOS by @pzelasko in https://github.com/lhotse-speech/lhotse/pull/1555
lilcom optional and fix failing unit tests on MacOS by @pzelasko in https://github.com/lhotse-speech/lhotse/pull/1555MixedCut by @pzelasko in https://github.com/lhotse-speech/lhotse/pull/1553LHOTSE_IO_BACKEND for reading AudioSource(type='url'); update docs by @pzelasko in https://github.com/lhotse-speech/lhotse/pull/1557AudioSamples(mono_downmix=True) to handle mixed single/multi channel batches gracefully by @pzelasko in https://github.com/lhotse-speech/lhotse/pull/1563CutSet.mix(..., tag="noise"), MixTrack.{is_snr_reference,mute} bools, and MixedCut.unmix(tag=...) by @pzelasko in https://github.com/lhotse-speech/lhotse/pull/1559Full Changelog: https://github.com/lhotse-speech/lhotse/compare/v1.32.2...v1.33.0
lilcom optional and fix failing unit tests on MacOS by @pzelasko in #1555MixedCut by @pzelasko in #1553LHOTSE_IO_BACKEND for reading AudioSource(type='url'); update docs by @pzelasko in #1557AudioSamples(mono_downmix=True) to handle mixed single/multi channel batches gracefully by @pzelasko in #1563CutSet.mix(..., tag="noise"), MixTrack.{is_snr_reference,mute} bools, and MixedCut.unmix(tag=...) by @pzelasko in #1559Full Changelog: v1.32.2...v1.33.0
NSF grant acknowledgment in README.md by @pzelasko in https://github.com/lhotse-speech/lhotse/pull/1539
Full Changelog: https://github.com/lhotse-speech/lhotse/compare/v1.32.1...v1.32.2
Full Changelog: v1.32.1...v1.32.2
Fix issue with importing Lhotse v1.32.0 on Windows.
Fix issue with importing Lhotse v1.32.0 on Windows.
Full Changelog: https://github.com/lhotse-speech/lhotse/compare/v1.32.0...v1.32.1
Fix issue with importing Lhotse v1.32.0 on Windows.
Full Changelog: v1.32.0...v1.32.1
Add recipe for NOTSOFAR-1 by @domklement in https://github.com/lhotse-speech/lhotse/pull/1517
Full Changelog: https://github.com/lhotse-speech/lhotse/compare/1.31.0...v1.32.0
Full Changelog: 1.31.0...v1.32.0
(skipping 1.31.0 because I accidentally uploaded and deleted this version in the past in PyPI, and can't re-use it now)
(skipping 1.31.0 because I accidentally uploaded and deleted this version in the past in PyPI, and can't re-use it now)
text file with utterances having empty references by @KarelVesely84 in #1496supervision_intervals and supervision_masks by @yfyeung in #1492Full Changelog: v1.30.3...1.31.0
[fix] avoid import librosa repeatly by @yuekaizhang in https://github.com/lhotse-speech/lhotse/pull/1475
Full Changelog: https://github.com/lhotse-speech/lhotse/compare/v1.30.2...v1.30.3
Full Changelog: v1.30.2...v1.30.3
Handle edge case in .repeat() when the input is empty by @pzelasko in https://github.com/lhotse-speech/lhotse/pull/1474
Thanks for debugging the issue @monica-sekoyan
Full Changelog: https://github.com/lhotse-speech/lhotse/compare/v1.30.1...v1.30.2
Patch release with bug fixes to AIStore and multi-storage-client logic amongst others.
Patch release with bug fixes to AIStore and multi-storage-client logic amongst others.
Full Changelog: https://github.com/lhotse-speech/lhotse/compare/v1.30.0...v1.30.1
Patch release with bug fixes to AIStore and multi-storage-client logic amongst others.
Full Changelog: v1.30.0...v1.30.1
add multi-storage-client backend for file open by @jayya2 in https://github.com/lhotse-speech/lhotse/pull/1455
Learn more about multi-storage-client here.
validate_cut_set from qa.py by @t13m in https://github.com/lhotse-speech/lhotse/pull/1458features_dtype arg to collate_features function by @t13m in https://github.com/lhotse-speech/lhotse/pull/1456Full Changelog: https://github.com/lhotse-speech/lhotse/compare/v1.29.0...v1.30.0
Learn more about multi-storage-client here.
validate_cut_set from qa.py by @t13m in #1458features_dtype arg to collate_features function by @t13m in #1456Full Changelog: v1.29.0...v1.30.0
Recipe for the Chinese Dysarthric Speech Database by @JinZr in https://github.com/lhotse-speech/lhotse/pull/1423
CutSet.from_huggingface_dataset() for importing HF datasets by @pzelasko in https://github.com/lhotse-speech/lhotse/pull/1433Full Changelog: https://github.com/lhotse-speech/lhotse/compare/v1.28.0...v1.29.0
CutSet.from_huggingface_dataset() for importing HF datasets by @pzelasko in #1433Full Changelog: v1.28.0...v1.29.0
Implement conversion from CutSet to HuggingFace dataset by @domklement in https://github.com/lhotse-speech/lhotse/pull/1398
Full Changelog: https://github.com/lhotse-speech/lhotse/compare/v1.27.0...v1.28.0
[Recipe] Wenetspeech4tts by @yuekaizhang in https://github.com/lhotse-speech/lhotse/pull/1384
CutSet.prefetch() for background cuts loading during iteration by @pzelasko in https://github.com/lhotse-speech/lhotse/pull/1380Full Changelog: https://github.com/lhotse-speech/lhotse/compare/v1.26.0...v1.27.0
Add EARS recipe by @Ryu1845 in https://github.com/lhotse-speech/lhotse/pull/1375
Full Changelog: https://github.com/lhotse-speech/lhotse/compare/v1.25.0...v1.26.0
[feature] Add .narrowband() effect (mulaw, lpc10 codecs) by @rouseabout in https://github.com/lhotse-speech/lhotse/pull/1348
.narrowband() effect (mulaw, lpc10 codecs) by @rouseabout in https://github.com/lhotse-speech/lhotse/pull/1348DynamicBucketingSampler by @pzelasko in https://github.com/lhotse-speech/lhotse/pull/1372MixedCut transforms serialization by @pzelasko in https://github.com/lhotse-speech/lhotse/pull/1370Full Changelog: https://github.com/lhotse-speech/lhotse/compare/v1.24.2...v1.25.0
Add KsponSpeech recipe by @whsqkaak in https://github.com/lhotse-speech/lhotse/pull/1353
Several new APIs for manifest classes added in #1361:
cut.iter_data() which iterates over (key, manifest) pairs of all data items attached to a given cut (e.g., ("recording", Recording(...)), ("custom_features", TemporalArray(...)))is_in_memory property for all manifest types to indicate if it contains data that is held in memoryis_placeholder for non-cut manifests to indicate if a manifest is just a placeholder (has some metadata, but can't be used to load data)cut.drop_in_memory_data() which converts manifests with in-memory data to placeholders (this is useful for manifests that live longer than just dataloading to avoid blowing up CPU memory and/or slowing down the program)Full Changelog: https://github.com/lhotse-speech/lhotse/compare/v1.24.1...v1.24.2
Support for reading data from AIStore using Python SDK by @pzelasko in https://github.com/lhotse-speech/lhotse/pull/1354
Full Changelog: https://github.com/lhotse-speech/lhotse/compare/v1.24...v1.24.1
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