Kneser's sound absorption nomogram and other charts

[1] KNESER HO, 1940, AKUST Z, V5, P256

[2] KNOTZEL H, 1940, AKUST Z, V5, P245

[3] Absorption of sound in air, in oxygen, and in nitrogen - Effects of humidity and temperature [J]. JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1933, 5 (02) : 112 - 121

[4] The pierce acoustic interferometer as an instrument for the determination of velocity and absorption [J]. PHYSICAL REVIEW, 1929, 34 (08): : 1184 - 1203

[5] Pumper EJ, 1939, J PHYS-USSR, V1, P411

[1] KNESER HO, 1940, AKUST Z, V5, P256

[2] KNOTZEL H, 1940, AKUST Z, V5, P245

[3] Absorption of sound in air, in oxygen, and in nitrogen - Effects of humidity and temperature [J]. JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1933, 5 (02) : 112 - 121

[4] The pierce acoustic interferometer as an instrument for the determination of velocity and absorption [J]. PHYSICAL REVIEW, 1929, 34 (08): : 1184 - 1203

[5] Pumper EJ, 1939, J PHYS-USSR, V1, P411