Scales for sound measurements used in machinery noise reduction

[1] CHURCHER BG, 1934, J I E E LONDON, P401

[2] Loudness, its definition, measurement and calculation [J]. JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1933, 5 (02) : 82 - 108

[3] GEIGER PH, 1933, J ACOUST SOC AM, V5, P25

[4] HAM LB, 1932, J ACOUST SOC AM, V4, pA551

[5] PARKIN JS, 1931, J ACOUST SOC AM, V3, P7

[6] Use of pressure gradient microphones for acoustical measurements [J]. JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1933, 4 (03) : 217 - 234

[7] 1933, J ANOUS SOC AM, V5, P109

[8] 1931, J ACOUS SOC AM, V2, P311

[1] CHURCHER BG, 1934, J I E E LONDON, P401

[2] Loudness, its definition, measurement and calculation [J]. JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1933, 5 (02) : 82 - 108

[3] GEIGER PH, 1933, J ACOUST SOC AM, V5, P25

[4] HAM LB, 1932, J ACOUST SOC AM, V4, pA551

[5] PARKIN JS, 1931, J ACOUST SOC AM, V3, P7

[6] Use of pressure gradient microphones for acoustical measurements [J]. JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1933, 4 (03) : 217 - 234

[7] 1933, J ANOUS SOC AM, V5, P109

[8] 1931, J ACOUS SOC AM, V2, P311