Candidate only; not cleared for children. A human educator must listen to all whole files on the intended equipment, check for clicks and local comfortable volume/room conditions, offer the full no-sound route, and respect stop/pass. Never use a cue as a physical start/stop/safety instruction or amplify/loop it to force audibility. Headphones are not required. Digital peak is not ear-level decibels or a comfort guarantee. No child data is captured.
Each file is original 22,050 Hz, 16-bit mono PCM, 2.25 seconds. Four identical 0.20-second electronic sine events use fixed 330 Hz pitch and 0.018 of digital full scale, with short fades; no speech, ambient track or sampled music. Below are all four starts and the full silent remainder. The spaced times are production facts for adult inspection; children use S/M/L comparative spacer cards, not decimal seconds.
| Candidate | Complete start/event transcript | Exact no-sound equivalent |
|---|---|---|
| Steady (playback review held) | 0.10, 0.65, 1.20, 1.75 s: each one fixed short 330 Hz tone; otherwise digital silence. Start gaps 0.55/0.55/0.55 s. | Four identical event discs; gap cards M M M, two raised blocks each. |
| Gather (playback review held) | 0.10, 0.90, 1.45, 1.80 s: each same tone; otherwise digital silence. Start gaps 0.80/0.55/0.35 s. | Same four discs; L M S gaps, three/two/one blocks. |
| Spread (playback review held) | 0.10, 0.45, 1.00, 1.80 s: each same tone; otherwise digital silence. Start gaps 0.35/0.55/0.80 s. | Same four discs; S M L gaps, one/two/three blocks. |
In each tone, a short fade enters and exits; the first 0.10 s and the tail after the last event are digital silence. The score-only route fully supports planning/comparing time shape. It does not establish actual aural discrimination, timing control, comfort, listener response, cultural context or audience receipt. If a cleared playback occurs, record cue/device/setting and child's own words or observation separately. No candidate reproduces a Day 125/130 check as an A/B answer pair.