Method for processing sound insulation of earmuffs and manufacturing method of earmuffs

Abstract

The invention discloses a method for processing sound insulation of earmuffs and a manufacturing method of earmuffs, belonging to the field of noise control applications. A method for processing sound insulation of earmuffs according to the present invention includes selecting earmuff parameters and sound leakage path parameters; then calculating the frequency domain transfer function according to the earmuff parameters and sound leakage path parameters; and then calculating the earmuffs according to the frequency domain transfer function Sound insulation. In the manufacturing method of the earmuffs of the present invention, the limit value R of the earmuff sound insulation is set, and when the sound insulation calculated according to the selected earmuff parameters and the sound leakage path parameters is less than or equal to R, the parameters are reselected to calculate the sound insulation; When the sound insulation corresponding to the parameters is greater than R, make earmuffs according to the selected parameters. The present invention overcomes the deficiency in the prior art that it is impossible to obtain the sound insulation under the sound leakage of the earmuff before making the earmuff, and the present invention can obtain the sound insulation under the sound leakage of the earmuff before making the earmuff; Earmuffs with high sound isolation in case of sound leakage.

Description

technical field [0001] The invention belongs to the application field of noise control, and more particularly relates to a method for processing the sound insulation of earmuffs and a method for manufacturing the earmuffs. Background technique [0002] The research on the performance of noise-cancelling earmuffs is an important topic in the field of noise control, and the study of high-performance and easy-to-design earmuffs is an important demand in the industry and daily use. The sound insulation of earmuffs is the most important performance indicator of earmuffs. However, researchers have mainly studied the sound insulation of earmuffs without sound leakage, and the existing domestic and foreign standards only focus on the sound insulation without sound leakage. However, in actual wearing and use, due to the interference of glasses, earrings, etc., the earmuff pads often cannot be completely attached to the skin, resulting in the existence of sound leakage, but there are ...

AI Technical Summary

Problems solved by technology

[0006] The present invention overcomes the deficiency in the prior art that it is impossible to obtain the sound insulation of earmuffs under the condition of sound leakage before making earmuffs. The present invention provides a processing method for the sound insulation of earmuffs, which can obtain The sound insulation under the case of cover sound leakage; further, the manufacturing method of earmuffs of the present invention is based on the processing method of earmuff sound insulation, and the parameters of the earmuff sound leakage lumped parameter model can be corrected to make earmuffs that meet the design requirements of sound insulation , so that earmuffs with higher sound insulation can be manufactured in the case of sound leakage

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