These are synthesized mono 16-bit PCM sine-tone examples: no song, borrowed sample, voice, child recording or cultural motif. They are not cleared for classroom playback until a human educator listens to all three at suitable volume on intended equipment, checks stop control and offers no sound. A low digital peak cannot guarantee comfortable acoustic output. Do not play automatically or place a speaker near an ear.
Each cue uses eight imagined beat starts at 0.10, 0.60, 1.10, 1.60 | 2.10, 2.60, 3.10, 3.60 seconds; | separates the two four-place phrases. Short tones are 330 Hz and 0.085 seconds. Every WAV lasts 4.20 seconds at 22,050 samples/second. A held tone lasts 0.90 seconds, spans local phrase-2 places 3–4 and ends before file end.
| Candidate | Exact sound event starts and rests | Complete no-sound route |
|---|---|---|
| cue-k-repeat-eight.wav (playback review held) | A then A: short tones begin 0.10, 1.10, 1.60 / 2.10, 3.10, 3.60 s; phrase-local count 2 rests at 0.60 and 2.60 s. Six events. | Fix two raised A strips X REST X X / X REST X X; point to all eight beat places, compare matching phrase cells and count six events. |
| cue-l-a-then-b.wav (playback review held) | A then B: shorts begin 0.10, 1.10, 1.60 / 2.60, 3.10 s; rests at 0.60, 2.10 and 3.60 s. Five events. | Fix A X REST X X and B REST X X REST; move whole strips to compare B then A without audio. |
| cue-m-held-ending.wav (playback review held) | A then held A′: shorts at 0.10, 1.10, 1.60 / 2.10 s; phrase-2 local count 2 rests at 2.60 s; one held 330 Hz tone starts 3.10 and lasts 0.90 s across local counts 3–4. Five events. | Keep first A; in second A replace two final X cards with one broad LONG band across local 3–4. Trace eight beat places and five event cards. |
The no-device routes meet the planned phrase/composition target. They do not prove the child heard a repeated phrase, sustained a sound or performed in time. Record any actual approved listening and sound-making separately.