Research Article
Experimental Study on the Sound Absorption Properties of Finger Millet Straw, Darbha, and Ripe Bulrush Fibers
Table 2
Nomenclature of fiber combination.
| | Sample code | Fibers | Sample thickness |
| | S1 | Finger millet straw fiber (F) | 50 mm | | S2 | Darbha fiber (D) | 50 mm | | S3 | Ripe bulrush fiber (R) | 50 mm | | S4 | Finger millet straw fiber/ripe bulrush fiber (F/R) | 25 + 25 = 50 mm | | S5 | Ripe bulrush fiber/finger millet straw fiber (R/F) | 25 + 25 = 50 mm | | S6 | Finger millet straw fiber/darbha fiber (F/D) | 25 + 25 = 50 mm | | S7 | Darbha fiber/finger millet straw fiber (D/F) | 25 + 25 = 50 mm | | S8 | Darbha fiber/ripe bulrush fiber (D/R) | 25 + 25 = 50 mm | | S9 | Ripe bulrush fiber/darbha fiber (R/D) | 25 + 25 = 50 mm | | S10 | Finger millet straw fiber + darbha fiber (F + D or D + F) | 50 mm | | S11 | Finger millet straw fiber + ripe bulrush fiber (F + R or R + F)) | 50 mm | | S12 | Darbha fiber + ripe bulrush fiber (D + R or R + D) | 50 mm |
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Note. / represents the position of the fiber; + represents mixed up fibers.
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