Abstract
The paper presents the verification of a solution to the narrow sound
frequency range problem of flat reflective panels. The analytical,
numerical and experimental studies concerned flat panels, panels with
curved edges and also semicircular elements. There were compared the
characteristics of sound reflected from the studied elements in order to
verify which panel will provide effective sound reflection and also
scattering in the required band of higher frequencies, i.e. above the
upper limit frequency. Based on the conducted analyzes, it was found that
among some presented solutions to narrow sound frequency range problem,
the array composed of panels with curved edges is the most preferred one.
Nevertheless, its reflection characteristic does not meet all of the
requirements, therefore, it is necessary to search for another solution of
canopy which is effective over a wide frequency range.
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