Absorption of sound by tree bark

G. Reethof; L. D. Frank; O. H. McDaniel

Treesearch

Absorption of sound by tree bark

Informally Refereed

Authors:

G. Reethof, L. D. Frank, O. H. McDaniel

Year:

1976

Type:

Research Paper

Station:

Northern Research Station

Source:

Res. Pap. NE-341. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 6p.

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Download (PDF 820 KB): https://research.fs.usda.gov/download/treesearch/15541.pdf

Abstract

Laboratory tests were conducted with a standing wave tube to measure the acoustic absorption of normally incident sound by the bark of six species of trees. Twelve bark samples, 10 cm in diameter, were tested. Sound of seven frequencies between 400 and 1600 Hz was used in the measurements. Absorption was generally about 5 percent; it exceeded 10 percent for only three samples, and then only at 1250 Hz or above. No general trend was evident in the variation of absorption with frequency.

Citation

Reethof, G.; Frank, L. D.; McDaniel, O. H. 1976. Absorption of sound by tree bark. Res. Pap. NE-341. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 6p.