Scherpinski triangular acoustic diffuser and arrangement method

Abstract

The invention relates to acoustic diffusion, in particular to a Scherpinski triangular acoustic diffuser and an arrangement method. The Scherpinski triangular acoustic diffuser comprises a mounting plate, wherein two groups of centrosymmetric Scherpinski triangle units are arranged on the mounting plate, each group of units comprises three stages of right-angled isosceles triangle modules generated by iteration, the right-angled isosceles triangle modules are respectively an initial module, two stages of modules and three stages of modules, each group of units is composed of one initial module, three second stages of modules and nine stages of modules, and the height of the modules is based on a 2D-QRD diffuser sequence algorithm. According to the Scherpinski triangular acoustic diffuser, a Scherpinski triangle is used as a prototype of diffuser design, and a modularized fractal design method is combined, so that the effective frequency band of sound diffusion, namely 125 Hz-4 kHz, is widened, and the diffusion effect is superior to that of a 2D-QRD diffuser with the same volume, and is particularly remarkable in middle and high frequency bands; and according to the modular expansion method for optimizing diffusion monomers, design parameters are clear, the monomers are simple in structure, and rapid adjustment can be conducted easily according to acoustic attributes and requirements of the space.

Description

technical field [0001] The invention relates to acoustic diffusion, more specifically a Siebinski triangular acoustic diffuser and an arrangement method. Background technique [0002] The most widely used known architectural acoustics is the Schroeder diffuser, which consists of several grooves of different depths and thin plates separating the grooves. The depth of the grooves is determined by a certain sequence generated by number theory. Random distribution of acoustic impedance to achieve uniform distribution of sound field; [0003] Acoustic diffusers are one of the effective ways to improve the uniformity of the sound field, prevent sound focusing and improve semantic clarity. Among them, the Schroeder diffuser, especially the quadratic residue diffuser (QRD) has been widely used in architectural acoustics, but it constitutes The periodic structure of the lead to the distortion of the tone, and there is a problem of limited bandwidth. The periodic diffusion structure...

AI Technical Summary

Problems solved by technology

Moreover, with the continuous enrichment of architectural forms, the monotonous form adopted by Schroeder diffusers can no longer meet the aesthetic requirements of modern interface design, and new diffusers with both acoustic performance and visual appeal need to be proposed and developed urgently.

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