None<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 9<\/td>\n | 1 Scope 2 Normative references <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 3 Reference atmospheric conditions 3.1 Composition 3.2 Atmospheric pressure and temperature 4 Attenuation coefficients owing to atmospheric absorption for pure-tone sounds 4.1 Basic expression for attenuation 4.2 Attenuation of sound pressure levels <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 5 Calculation procedure for pure-tone attenuation coefficients 5.1 The variables 5.2 The formulae <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 5.3 Computation of attenuation coefficients 5.4 Tabular values of attenuation coefficients 6 Accuracy of calculated pure-tone attenuation coefficients for various ranges of the variables 6.1 Accuracy of \u00b15 percent <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 6.2 Accuracy of \u00b110 percent 6.3 Accuracy of \u00b120 percent 6.4 Accuracy of \u00b150 percent <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | 7 Calculation of attenuation by atmospheric absorption for wideband sounds analyzed by \n fractional-octave-band filters 7.1 Description of the general problem and calculation methods <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | 7.2 Pure-tone method to approximate band-level attenuation <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | 7.3 Combined wideband and pure-tone sounds 8 Application to room acoustics <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | Annex A (informative) Physical mechanisms for atmospheric absorption A.1 Absorption mechanisms and frequency dependence <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | A.2 Pressure dependence <\/td>\n<\/tr>\n | ||||||
| 37<\/td>\n | Annex B (informative) Conversion of humidity data to molar concentration of water vapor B.1 Introduction B.2 Relative humidity B.3 Saturation vapor pressure <\/td>\n<\/tr>\n | ||||||
| 38<\/td>\n | B.4 Dewpoint <\/td>\n<\/tr>\n | ||||||
| 39<\/td>\n | ii \u00a9 2014 Acoustical Society of America\u2013 All rights reserved \n Annex C (informative) Effect of inhomogeneous, real atmospheres C.1 Introduction C.2 Variation with altitude <\/td>\n<\/tr>\n | ||||||
| 40<\/td>\n | C.3 Local variation <\/td>\n<\/tr>\n | ||||||
| 43<\/td>\n | Annex D (informative) General spectrum-integration method for calculating the attenuation by \n atmospheric absorption of wideband sounds analyzed by fractional-octave-band filters D.1 Introduction D.2 Case 1: Band sound pressure levels known at the source <\/td>\n<\/tr>\n | ||||||
| 46<\/td>\n | D.3 Case 2: Band sound pressure levels known at a receiver location <\/td>\n<\/tr>\n | ||||||
| 47<\/td>\n | D.4 Case 3: Adjusting measured sound pressure levels at a receiver location for differences in \n attenuation by atmospheric absorption resulting from different meteorological conditions \n along a sound-propagation path <\/td>\n<\/tr>\n | ||||||
| 48<\/td>\n | Annex E (informative) Approximate method for calculating the attenuation by atmospheric \n absorption of wideband sounds analyzed by fractional-octave-band filters E.1 Introduction E.2 General approach <\/td>\n<\/tr>\n | ||||||
| 49<\/td>\n | E.3 The variables E.4 The formula <\/td>\n<\/tr>\n | ||||||
| 50<\/td>\n | E.5 General calculation procedure E.6 Application to stratified atmosphere <\/td>\n<\/tr>\n | ||||||
| 51<\/td>\n | E.7 Application to room acoustics <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" ANSI\/ASA S1.26-2014 American National Standard Methods for Calculation of the Absorption of Sound by the Atmosphere<\/b><\/p>\n |