Skip to main content
padlock icon - secure page this page is secure

Procedure for Calculating the Loudness of Sonic Bangs

Buy Article:

$30.00 + tax (Refund Policy)

In a previous paper the subjective magnitude of sonic bangs was shown to be calculable from waveforms recorded during field experiments, using an adaptation of established loudness calculation procedures. The method used previously is now applied to model waveforms based on likely values of overpressure, duration and rise time with allowance for interaction between incident and ground reflected shock waves.

The determination of the energy spectrum by Fourier analysis of the waveform is described first; the way in which the standard loudness calculation for continuous sounds is adapted to the case of brief transients, such as sonic bangs with high levels of very low frequency energy, is then given in detail and summarized in an appendix.

The results of applying the procedure to waveforms broadly within the range anticipated from first generation supersonic transports, are quoted in graphical form; for a given nominal peak overpressure, loudness level is found to vary by as much as 25 phons for rise times and delays between 0 to 16 ms. Finally, it is shown that loudness levels may be considerably intensified by focussing such as may be produced by manoeuvring aircraft.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Document Type: Research Article

Publication date: January 1, 1969

More about this publication?
  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
  • Editorial Board
  • Information for Authors
  • Submit a Paper
  • Subscribe to this Title
  • Information for Advertisers
  • Online User License
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more