Open Access
Table 1
Comparison of acoustic monitoring array design methods for fan blades.
| Method category | Theoretical basis | Sound field modeling accuracy | Array optimization capability | Computational cost |
|---|---|---|---|---|
| Regular geometric array [6] | Array signal processing | Low (free-field assumption) | None | Very low |
| Free-field sparse optimization [13] | Heuristic search | Low (spherical wave propagation) | Moderate | Moderate |
| High-fidelity sound field simulation [8] | Computational aeroacoustics | High | None | Extremely high |
| DL voiceprint recognition [16] | Data-driven feature learning | None | None | Moderate |
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