Luel-ai/luel-conversational-speech-samples

Luel Conversational Speech Samples

Multi-speaker conversational audio for ASR / TTS / dialogue research, organized into three quality tiers.

Tiers

Tier	Folder	What it is
Standard	standard/	Curated, QA-passed conversational audio in 9 well-resourced languages. The canonical quality bar.
Noisy	noisy/	Conversational audio recorded in non-ideal acoustic environments (crowd, traffic, animals, etc.). Useful for training noise-robust ASR. Currently English-only.
Low-resource	low_resource/	Pilot bucket for low-resource languages. Per-sample quality varies more than the standard tier. Most sessions are audio-only; a small subset has transcripts.

Each tier has its own README inside the folder with details.

Per-session file convention (all tiers)

<tier>/<lang>/<session_id>/
    <session_id>.wav            # equal-weight host+guest mono mix
    <session_id>_speaker1.wav   # host track (isolated)
    <session_id>_speaker2.wav   # guest track (isolated)
    <session_id>.json           # metadata + (optional) speakerTranscript

Speaker tracks were captured simultaneously on independent channels — diarization is built into the data, not inferred. Both speaker tracks share an identical timeline and duration.

JSON schema

• name, audioURL, speaker1_audioURL, speaker2_audioURL
• durationSeconds, language, category, numSpeakers, sampleRate
• metadata.* — language, country, region, environment, device, topic
• transcript (string, joined from speakerTranscript)
• speakerTranscript — array of {speaker, text, startTime, endTime, words[]} (when transcripts are available)

Filler words, stutters, false starts, and repeated words are preserved verbatim in transcripts.

Languages by tier

Standard: English (American + Global), Hindi, Punjabi, Marwari, Urdu, German, French, Japanese, Spanish.

Noisy: English (American).

Low-resource: Afrikaans, Akan/Twi, Amharic, Cebuano, Hausa, Hiligaynon, Igbo, Ilocano, Sepedi, Pashto, Shona, Sesotho, Tagalog, Tswana, Xhosa, Yoruba, Zulu.

Citation / contact

See LICENSE for usage terms. For questions or licensing, reach out via the Luel website.