Table 9. Peak Frequency and Acceleration for Various Energy Sourcesa.
| source | frequency (Hz) | acceleration (m·s–1) |
|---|---|---|
| human walking | 2–3 | 2–3 |
| car engine compartment | 200 | 12 |
| door closing | 125 | 3 |
| induction motor | 10–300 | 500 |
| diesel motor | 10–103 | 500 |
| industrial break | 10–100 | 0–100 |
| washing and drying machine | 121 | 3.5 |