Atmospheric Absorption of Low Frequency Sound at High Pressures.
Abstract
Results of a limited experimental study of atmospheric absorption in moist air at low frequencies are reported. The measurements were carried out in a resonance absorption tube at ratios of frequency to pressure of 4.6 to 403 Hz/atm. This extends the f/P range of laboratory measurements of absorption in air well below limits of previously published data in air of about 140 Hz/atm. The experimental apparatus was calibrated, using argon, over the same f/P range. The measured and predicted absorption in air and in argon generally agreed with existing theoretical models, although substantial deviations remain to be explained. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1976
- Accession Number
- ADA031058
Entities
People
- L. C. Sutherland
- Min‐Cheol Lee