| タイトル | Location of noise sources using a phase-slope method |
| 本文（外部サイト） | http://hdl.handle.net/2060/19860006571 |
| 著者（英） | Deloach, R.; Preisser, J. S. |
| 著者所属（英） | NASA Langley Research Center |
| 発行日 | 1985-11-01 |
| 言語 | eng |
| 内容記述 | Two three-element microphone arrays have been used to predict the position of both pure-tone and broadband noise sources in an anechoic chamber under different ground impedance conditions. Source positions are predicted using the slope of phase-frequency plots between array elements. A phase-slope method for quantitatively assessing both the accuracy and precision of estimates of noise source location is introduced and illustrated. When the phase-slope method is used, there is higher accuracy and more precision in estimates of source location with a small ground impedance than with a large ground impedance. As would be expected, ground impedance effects are larger for low elevation angles than for high elevation angles. |
| NASA分類 | ACOUSTICS |
| レポートNO | 86N16041
NASA-TP-2505
L-15793
NAS 1.60:2505 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/155005 |
