Sampled sound data
This is a fixed question bank. Later sets may repeat these questions
A classroom sound model records one amplitude value at each listed time. Negative values lie below its zero reference; keep the sign when reading a value
| Time in seconds | Recorded amplitude |
|---|---|
| 0 | -3 |
| 0.25 | 1 |
| 0.5 | 3 |
| 0.75 | -1 |