ISSN:0001-4966    

DOI:10.1121/1.1916194

出版商:Acoustical Society of America    

年代:1942

数据来源: AIP

ISSN:0001-4966    

DOI:10.1121/1.1916195

出版商:Acoustical Society of America    

年代:1942

数据来源: AIP

摘要:

The translational dispersion of sound in gases is discussed from the standpoint of kinetic theory. An explicit relation is derived for the variation of sound velocity with frequency in monatomic gases; this relation is:V = V0(1 – 5.4l2/λ2), wherelis the mean free path, and λ the wave‐length. The possibility of experimental observation of translational dispersion is briefly discussed.

ISSN:0001-4966    

DOI:10.1121/1.1916196

出版商:Acoustical Society of America    

年代:1942

数据来源: AIP

摘要:

A device for producing a known pressure at designated points in a progressive plane sound wave is described. The method of using this “absolute pressure generator” to effect the free‐field calibration of a velocity microphone over a limited frequency range is outlined, and the results compared with a Rayleigh‐disk calibration. Suggestions are given for extending the range over which the generator can be used as a microphone calibrating agency.

ISSN:0001-4966    

DOI:10.1121/1.1916197

出版商:Acoustical Society of America    

年代:1942

数据来源: AIP

摘要:

A graphical presentation of the streaming of acoustical energy near vibrating radiators and reflecting surfaces has been developed. The sound power density field from a simple source, a doublet source, a single point source before a totally reflecting plane (free as well as rigid), and a piston vibrating in an infinite fixed wall is considered analytically. The starting point of all computations is taken as the velocity potential resulting from the particular radiating source. Formulae are worked out to allow the computation of percent of total radiation flowing through a certain area. By interpolation of the graphs from these equations, the streaming or flow of energy for the several radiation fields is shown.

ISSN:0001-4966    

DOI:10.1121/1.1916198

出版商:Acoustical Society of America    

年代:1942

数据来源: AIP

ISSN:0001-4966    

DOI:10.1121/1.1916199

出版商:Acoustical Society of America    

年代:1942

数据来源: AIP

ISSN:0001-4966    

DOI:10.1121/1.1916200

出版商:Acoustical Society of America    

年代:1942

数据来源: AIP

ISSN:0001-4966    

DOI:10.1121/1.1916201

出版商:Acoustical Society of America    

年代:1942

数据来源: AIP

ISSN:0001-4966    

DOI:10.1121/1.1916202

出版商:Acoustical Society of America    

年代:1942

数据来源: AIP

ISSN:0001-4966    

DOI:10.1121/1.1916203

出版商:Acoustical Society of America    

年代:1942

数据来源: AIP