Open AccessCALCULATION OF IMPULSE NOISE WITH MIRROR-DIFUSE REFLECTION OF SOUND FROM FENCES
Author(s) -
A. A. Antonov,
Irina Matveeva,
Igor Shubin,
Ilya Tsukernikov
Publication year - 2019
Publication title -
akustika
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.162
H-Index - 7
eISSN - 2570-8775
pISSN - 1801-9064
DOI - 10.36336/akustika20193488
Subject(s) - sound energy , acoustics , noise (video) , impulse (physics) , energy (signal processing) , reflection (computer programming) , pulse (music) , impulse response , computer science , impulse noise , noise control , sound (geography) , physics , optics , noise reduction , mathematics , detector , computer vision , pixel , quantum mechanics , image (mathematics) , programming language , mathematical analysis
The choice and acoustic efficiency of construction and acoustic means of noise control is determined on the basis of calculations of changes in the spatio-temporal characteristics of the pulses of sound energy emitted by the sound source. The paper proposes a combined computational model for estimating the energy characteristics of pulse noise and their spatiotemporal changes. The model describes the formation and distribution of the reflected sound energy of pulses in the mirror-scattered reflection of sound from the fences. The principles of construction of the computational model and the computer program implementing it are stated. Evaluation of the computational model is performed by comparative analysis of experimental and computational data obtained by the action of a pulsed noise source in complex geometrically shaped rooms. It is found that the calculated graphs of the decay of the reflected pulse energy in time coincide with the experimentally determined declines.