DTMF Transcript — 042 (JSON)
Ground-truth digit transcript for the DTMF sequence 042.
{
"digits": "042",
"text": "0 4 2",
"kind": "DTMF",
"toneMs": 120,
"gapMs": 80,
"sampleRate": 16000,
"seed": 2204,
"note": "Synthetic DTMF \u2014 not speech. Ground truth for DTMF/ASR harnesses."
}
Specifications
- Digits
- 042
- Role
- ground truth transcript
- Seed
- 2204
What is a .json file?
JSON (JavaScript Object Notation) is a lightweight, text-based data-interchange format representing objects, arrays, strings, numbers, booleans, and null. It is language-independent, human-readable, and the dominant format for web APIs and configuration. It requires a single well-formed root value.
How to use this file
Use an example JSON file to test parsers and serializers, schema validation, Unicode and number-precision handling, and API request or response processing.
How to use this file for testing
“DTMF Transcript — 042 (JSON)” is a deterministic Novus Examples fixture for ASR testing. Short synthetic digit/tone utterances with transcript JSON and clean↔noise pairs — for testing ASR loaders, WER harnesses, and audio preprocessing.
Documented properties for this file: seed 2204 · ground truth transcript. Compare results against paired or grouped companions on this page when present (clean↔damaged, searchable↔scanned, or format twins) so scores stay reproducible across runs.
Download the file once, keep the path stable in CI or local scripts, and treat the spec table as the contract: dimensions, seeds, field lists, and roles are intentional. Corrupt or invalid samples are labelled as such — expect parsers to fail loudly rather than silently accept them.
Media fixtures are short and synthetic by design. Prefer waveform or transcript ground truth in the same group when measuring ASR, trim, upscale, or sync tools; do not assume broadcast-quality masters.
Run ASR on the clip and score the transcript against the documented ground-truth script; clips are short, synthetic, and read from a fixed word or digit sequence.
Code examples
import json
with open("dtmf-042-transcript.json") as f:
data = json.load(f)
print(type(data), len(data))Related files
- wavDTMF Sequence — *9#Synthetic DTMF tone sequence for digits “*9#”. Pair with the transcript JSON.
- wavDTMF Sequence — 1234Synthetic DTMF tone sequence for digits “1234”. Pair with the transcript JSON.
- wavDTMF Sequence — 13579Synthetic DTMF tone sequence for digits “13579”. Pair with the transcript JSON.
- wavDTMF Sequence — 567890Synthetic DTMF tone sequence for digits “567890”. Pair with the transcript JSON.
- jsonDTMF Transcript — *9# (JSON)Ground-truth digit transcript for the DTMF sequence *9#.
- jsonDTMF Transcript — 1234 (JSON)Ground-truth digit transcript for the DTMF sequence 1234.
Generated by generation/audio_wave_e.py. Free for any use, no attribution required — license.