The WAV file contains six synthetic, non-speech cues in this exact order:
TAP — a short low click.
CLAP — a longer noise burst.
TAP — same short click.
CLAP — same longer burst.
TAP — same short click.
CLAP — same longer burst.
The full repeating unit is TAP–CLAP. It occurs three times. The next two cues would be TAP, CLAP. Pauses simply separate cues; their duration and musical timing are not assessed. This audio is an optional second representation of the same pattern in Day 177. A child can instead point to six broad TAP/CLAP word cards, feel alternating smooth/ridged broad cards, draw two distinct marks, sign the words or direct an adult to make the cues. Adult-made sound can replace the file. No listening, speaking, clapping, motor timing or online access is required.