Research Article
Research on Sound Source Material Recognition Technology in Indoor Geotechnical Inspection
Table 2
Soil sample hammering schedule.
| Soil sample | Plan hammering force (N) | Measured hammering force (N) | Number of hammers | Acoustic signal sample number | Sampling frequency (Hz) |
| T1 | 35, 45, 55, 65, 75, and 85 A total of six levels | 32~58 | 40-50 times per soil sample | 1~56 | 51200 | T2 | 19~64 | 57~104 | T3 | 23~78 | 105~153 | T4 | 38~84 | 154~204 | T5 | 48~90 | 205~247 | T6 | 35~94 | 248~295 | T7 | 30~128 | 296~338 | T8 | 41~153 | 339~377 | T9 | 55~196 | 378~434 |
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