Research Article
Study on Sound Absorption Properties of Polyvinyl Chloride (PVC) Film Multicavity Structure Materials
Table 5
Comparison of resonance frequency theory and experimental results of the FPB structure.
| | Structure | Sample thickness D (m) | Experimental results (Hz) | Before revision | After revision | | Calculation results (Hz) | Error absolute value (Hz) | Calculation results (Hz) | Error absolute value (Hz) |
| | FPB | 0.01 | >1600 | 1655 | — | 1322 | — | | 0.015 | >1600 | 1351 | — | 1067 | — | | 0.02 | 908 | 1170 | 262 | 915 | 7 | | 0.025 | 782 | 1046 | 264 | 809 | 27 | | 0.03 | 754 | 956 | 202 | 731 | 23 |
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