ada-dataset vol.001

Timestamp-aligned English speech-to-text translation data, delivered on a standard CD-ROM. Each disc contains 5–6 long-form English audio recordings (WAV, 16kHz mono) with word-level and segment-level alignment annotations — ready for real-time subtitle training, simultaneous translation research, and ASR fine-tuning.

What's on the disc

Data structure per audio file

{
  "audio_path": "wavs/013429.wav",
  "source_language": "english",
  "duration_seconds": 142.5,
  "segments": [
    {
      "start": 0.000,
      "end": 4.230,
      "source_text": "We won't feel compelled...",
      "words": [
        {"word": "We", "start": 0.00, "end": 0.15, "score": 0.98},
        {"word": "won't", "start": 0.18, "end": 0.42, "score": 0.95}
      ]
    }
  ]
}

Series & catalog

This disc is part of an ongoing CD series. Each volume is a self-contained dataset — no other volumes are required. New volumes ship regularly, covering different speech domains: business meetings, news broadcasts, lectures, and casual conversation. Collect them individually or build a comprehensive corpus over time.

License

Once you purchase this CD, the data is yours to use — freely and permanently.

• Commercial use — products, SaaS, internal tools, client work
• Model training — fine-tune, distill, or train from scratch. No royalties
• Modify & derive — transform, augment, merge with your own datasets
• No expiration — perpetual license, no recurring fees, no strings attached

Source dataset license is documented in the included LICENSE file on each disc.

Specs

Who this is for

• ML engineers building real-time subtitle or live translation systems
• Researchers benchmarking long-form speech translation models
• Teams training or evaluating ASR with forced-alignment ground truth
• Anyone who wants clean, timestamp-aligned English speech data they actually own

Data structure per audio file JA Translated

{
  "audio_path": "wavs/013429.wav",
  "source_language": "english",
  "target_language": "japanese",
  "duration_seconds": 142.5,
  "segments": [
    {
      "start": 0.000,
      "end": 4.230,
      "source_text": "We won't feel compelled...",
      "source_text": "私たちは強制されることはないだろう…",
      "words": [
        {"word": "We", "start": 0.00, "end": 0.15, "score": 0.98},
        {"word": "won't", "start": 0.18, "end": 0.42, "score": 0.95}
      ]
    }
  ]
}