A simple arrangement for measuring sound absorption at low frequencies
โ Scribed by D. H. Bekkering; C. W. Kosten
- Publisher
- Springer-Verlag
- Year
- 1950
- Weight
- 267 KB
- Volume
- 1
- Category
- Article
- ISSN
- 0365-7140
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๐ SIMILAR VOLUMES
The system consists of an enclosed waveguide operating in the fundamental mode, with an array of microphones and data processing electronics for determining the complex reflection coefficient of a surface two meters square.
In the application of the statistical energy analysis theory to the calculation of sound insulation it has been determined that there is a great discrepancy between the measured and theoretical values at low frequencies. This is one of the disadvantages of statistical energy analysis. Therefore, it
would need to be trapped in order to bring the viscosity results back to the correct value. A clue to this can be found from observations of the specific heat 4 and adsorption characteristics 5 of He 3-tte 4 mixture films, from which it was inferred that the He 3 component of such films resides main