Abstract
The analysis of sound-absorbing structures is carried out taking into account their modern classification. The considered sound-absorbing structures can be used to reduce aircraft cabin and community noise levels. Depending on the spectrum of the main noise sources, the required type of sound-absorbing structure is selected, which is then adjusted to the problematic frequency range. Semiempirical and experimental methods are used to adjust sound-absorbing structures, and numerical methods are currently being actively developed.
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