Sound insulator and formation method thereof

Abstract

The invention discloses a formation method of a sound insulator. The formation method comprises the following steps: firstly acquiring a resonance quantitative relation for a wave-guide duct; and then, in accordance with the resonance quantitative relation, making the sound insulator in a corresponding shape in accordance with the shape of the wave-guide duct. The invention also aims at providing the sound insulator; when the wave-guide duct is of a rectangular structure, the longitudinal section of a shell of the sound insulator is represented as an inverted concave form which is provided with a cavity therein; and a throat structure is arranged on the lower surface of the middle of the shell. The sound insulator disclosed by the invention can achieve a same sound insulation effect in the prior art with a relatively small space, and the sound insulator, in comparison with the prior art, is thinner in size in an acoustic wave propagation direction. According to the sound insulator provided by the invention, the shape of the cavity of the shell can be designed in accordance with the specific shape of the wave-guide duct, so that components are more compact and a relatively higher space utilization rate is guaranteed.

Description

technical field [0001] The invention relates to an acoustic device, in particular to a sound insulator and a forming method thereof. Background technique [0002] Sound insulation is an important research field in acoustics. Through certain technical means, sound energy is blocked in the propagation path and cannot pass directly. An important technology in sound insulation research is the reflection and absorption of sound waves through the Helmholtz resonator, which has the advantage of allowing air flow while sound insulation, so it has important application prospects, such as sound insulation windows and howling suppression in tunnels. However, traditional acoustic resonant devices usually only focus on the acoustic performance of the device, and are often bulky, which does not adapt to the trend of device integration and miniaturization, thus affecting the prospect of its application. Contents of the invention [0003] The object of the present invention is to provid...

AI Technical Summary

Problems solved by technology

However, traditional acoustic resonant devices usually only focus on the acoustic performance of the device, which are often bulky and do not adapt to the trend of integration and miniaturization of devices, thus affecting their application prospects

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