What's Changed
* [feature] Add `.narrowband()` effect (mulaw, lpc10 codecs) by rouseabout in https://github.com/lhotse-speech/lhotse/pull/1348
* [feature/optimization] Support for pre-determined batch sizes in `DynamicBucketingSampler` by pzelasko in https://github.com/lhotse-speech/lhotse/pull/1372
* [bug] Fix `MixedCut` transforms serialization by pzelasko in https://github.com/lhotse-speech/lhotse/pull/1370
**Full Changelog**: https://github.com/lhotse-speech/lhotse/compare/v1.24.2...v1.25.0