BabelSpeech/50hours_Malay_Real-world_Colloquial_Conversation_and_Monologue_Speech_Dataset

BabelSpeech: 50 Hours of Real-World Colloquial Malay ASR Speech Data

This dataset contains 50 hours of high-quality Malay colloquial ASR speech data, reflecting realistic code-switching between Malay and English, as commonly used in everyday communication in Malaysia.

Overview

• Content: 50 hours of real-world colloquial Malay speech suitable for ASR fine-tuning and benchmarking.
• Metadata: Stored in a separate JSON file, including audio path, duration, text, confidence score, SNR, and DNSMOS. More metadata fields may be added in future updates.
• Domains covered: Technology, entertainment, travel, education, daily life, and others.
• Data quality: Each batch was manually validated by native speakers. The transcription accuracy exceeds 98%, making it suitable for ASR model fine-tuning.
• Sampling rate: 16 kHz

Data Selection and Quality Control Process

1. Data sourcing — Collected from multiple high-quality open sources through international collaborations.
2. Human screening — All samples are manually reviewed to remove noisy or low-quality segments.
3. Automated preprocessing — Includes denoising, enhancement, and structured data cleaning.
4. Audio quality evaluation — Automated tools evaluate SNR and DNSMOS to select the best-quality clips.
5. Cross-model validation — Multi-model consistency checks are used to minimize transcription bias.
6. Final human verification — Native speakers perform spot checks to ensure overall accuracy above 95%.

Metadata Format

{
  "filename": "youtube_ma_spk005_Rcl6dRZg-Os_202509_0013_00.wav",
  "relative_path": "wav/youtube_ma_spk005_Rcl6dRZg-Os_202509_0013_00.wav",
  "duration": 5.4,
  "confidence": 1.0,
  "text": " Ada dua lampu dekat sini. Ada dua lampu untuk suluh dia time dia streaming lah kot.",
  "snr": 54.93885803222656,
  "dnsmos": 4.4429564
}

Data Distribution

• SNR Distribution

  

• DNSMOS Distribution

  

• Duration Distribution

  

• Confidence Distribution

  

Contact

For inquiries or to request access to additional high-quality Malay speech data, please contact our team at: 📧 babelspeechai@gmail.com