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name: data-and-features description: "ASRT data configuration, datalist, dictionary, WAV, and speech feature extraction operating guidance." metadata: disco-role: operating disable-model-invocation: true license: GPL 3.0

data-and-features

Use this sub-skill when an ASRT task involves dataset configuration, pinyin dictionaries, WAV metadata, or speech-feature extraction before model training, evaluation, prediction, or serving.

Owns

• asrt_config.json structure and dataset section semantics.
• dict.txt tab-separated pinyin-to-symbol rows and pinyin-to-index mapping.
• ASRT wav-list and syllable-label line schemas.
• DataLoader data assembly behavior and utils.config cache behavior.
• WAV readers and byte decoding used before feature extraction.
• MFCC, Logfbank, Spectrogram, and SpecAugment feature behavior, including the 16 kHz constraint for spectrogram-style inputs.

Route away

• Training, evaluation, prediction scripts, acoustic-model class selection, model weights, CTC, and tensor shapes beyond data/feature compatibility: use acoustic-models.
• Pinyin sequence to Chinese text decoding or language-model internals: use language-model.
• HTTP/gRPC request payloads, server/client execution, and SDK calls: use serving-clients.
• Full dataset downloads and interactive download helpers: treat as reference-only, not as a bundled runtime workflow.

Operating path

1. Read references/data-and-config.md before editing or validating config, dict, datalist, or syllable labels.
2. Run scripts/validate_asrt_config.py for self-contained structural validation of config/list/dict files.
3. Read references/audio-and-features.md before diagnosing WAV metadata, 16 kHz failures, spectrogram shape, MFCC/Logfbank behavior, or SpecAugment randomness.
4. Run scripts/inspect_audio_features.py for safe WAV and feature-shape inspection without importing ASRT.
5. Use references/api-reference.md for quick schema/API reminders and references/troubleshooting.md for failure diagnosis.

Safety and boundaries

The bundled scripts are read-only validators/inspectors. They do not download corpora, record microphone audio, call servers, train models, or require an ASRT checkout. Provide user-owned config, dict, datalist, label, or WAV paths explicitly.