# Three original six-event sound candidates · full transcript

**Candidate only; not cleared for children.** A human educator must listen to every entire file on the actual device, review clicks and local volume/room comfort, and offer no-sound participation. Stop on request. Do not loop/amplify to force audibility or require headphones. Digital peak is not an acoustic decibel or comfort guarantee. No child data is captured.

Each original file is 22,050 Hz, 16-bit mono PCM, **2.90 seconds**. Each event is a 0.16-second generated pure sine with a short fade. Event onsets are **0.10, 0.45 | 1.05, 1.40 | 2.00, 2.35 seconds**: the longer spaces divide OPENING, DIFFERENT and RETURN. Low L is 330 Hz and high H is 392 Hz, at programmed amplitude 0.025 of digital full scale. Source and programmed level stay fixed in these particular cues, but perceived level may vary by device/listener. There is no speech, song, instrument sample or background sound.

| Candidate | Complete event transcript | Exact no-sound equivalent |
| --- | --- | --- |
| [Return after contrast](cue-return-lh.wav) | OPENING: 0.10 L, 0.45 H; DIFFERENT: 1.05 H, 1.40 H; RETURN: 2.00 L, 2.35 H; otherwise digital silence. | Six pitch cards `L H / H H / L H`; compare paired opening and return. |
| [Another return](cue-return-hl.wav) | OPENING: 0.10 H, 0.45 L; DIFFERENT: 1.05 L, 1.40 L; RETURN: 2.00 H, 2.35 L; otherwise digital silence. | Six pitch cards `H L / L L / H L`; compare paired sections. |
| [Different ending](cue-end-different.wav) | OPENING: 0.10 L, 0.45 H; DIFFERENT: 1.05 H, 1.40 H; ENDING: 2.00 H, 2.35 L; otherwise digital silence. | Six pitch cards `L H / H H / H L`; explain that final reverses opening. |

The card route supports the **planned structural form** target. It cannot evidence aural recognition, controlled sound-making, comfort, cultural context or an audience. If a cleared trial occurs, record exact cue/device/setting and the child's own response separately. These cues do not appear as the two fresh check sequences.