The Influence of the Shape Space on the Scattering of the Sound Energy

Abstract:

The sound level adjacent to the sound sources is mainly characterized by the straight sound. The dispersion sound ratio is increasing with distance increasing and within the limited range round the sound source, the sound level is higher, in the area with dispersion bodies even higher than in an empty area. The laws of sound propagation in empty areas are derived on classical geometric base. The laws of sound propagation in large areas with dispersion objects are also derived from these laws complemented with the Kuttruff ́s equation of reverberation process in media with dispersion bodies. Simultaneously the sound energy is according to the purpose divided into the straight sound and the reverberation. The straight sound is the energetic ratio of sound, that is during the way to destination not dispersed and the propagation laws are equal to empty areas propagation laws are equal to empty areas propagation laws. The dispersed sound is the ratio of sound energy that reaches the destination after one or more reflections. The energy result is then the sum of densities of dispersion and straight sound.

• Periodical: Advanced Materials Research (Volume 855)
• Pages: 237-240
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.855.237
• Online since: December 2013
• Authors: Alena Pernišová, Dušan Dlhý*
• Keywords: Noise, Scattering, Shape Space, Sound

References

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