---
license: cc-by-4.0
task_categories:
- automatic-speech-recognition
language:
- en
- es
- pt
- fr
- de
- it
pretty_name: English EN-X Code-Switching Main-Language Samples
---

# English EN-X Code-Switching Main-Language Samples

This dataset contains the individual full FLEURS utterance chunks used to build the paired mixed dataset.

Source data is `google/fleurs` at revision `refs/convert/parquet`, split `test`, resampled to 16000 Hz. The generator uses seed `42` and creates 50 mixed samples. Each mixed sample contains English and exactly one of Spanish, Portuguese, French, German, or Italian, sampled uniformly.

Each selected utterance is RMS-normalized to -20.0 dBFS before concatenation, with peak limiting at 0.99. The samples dataset stores those same normalized utterances.

The mixed dataset stores `transcription_tagged` as `<lang><start:SS.ss>text<end:SS.ss>`. The samples dataset stores each full utterance chunk separately and links it back with `parent_id`. The merged samples dataset concatenates contiguous chunks with the same language into one row per language segment.