Calculation method and system for hearing threshold shift after sonic weapon attack

A sonic weapon and sonic technology are applied in the field of calculation method and system of hearing threshold shift after sonic weapon strike, which can solve the problem of inability to accurately evaluate the effect of sonic weapon, and achieve the effect of automatic calculation.

Active Publication Date: 2022-05-27
NANJING UNIV OF SCI & TECH
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Problems solved by technology

However, there is still no complete calculation process to calculate the impact of the three main factors of sound wave intensity, sound wave frequency, and sound wave duration on the target's damage to the hearing threshold shift, so it is impossible to accurately evaluate the effect of sound wave weapons

Method used

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  • Calculation method and system for hearing threshold shift after sonic weapon attack
  • Calculation method and system for hearing threshold shift after sonic weapon attack
  • Calculation method and system for hearing threshold shift after sonic weapon attack

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Embodiment Construction

[0030] The present invention will be further introduced below with reference to the accompanying drawings and specific embodiments.

[0031] combine Figure 1-Figure 6 , a calculation method for evaluating the transfer of hearing thresholds after a sonic weapon strikes an embodiment of the present invention, aims to evaluate the impact of the sound intensity, frequency, and duration of the sonic weapon on the transfer of human hearing thresholds, calculate the size of the transfer of hearing thresholds under a certain parameter, The problem is transformed into a mathematical model of the effect of three continuous variables on a single dependent variable. Set the intensity (dB), frequency (Hz), and duration (s) of the sonic weapon as variables SPL, freq, t, respectively, and set the dependent variable hearing threshold shift as F (dB). Use existing data: (SPL i ,freq j ,t k ) (where i,j,k=1,2,3,4, SPL i+1 >SPL i , freq j+1 >freq j , t k+1 >t k ) and the corresponding...

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Abstract

The present invention proposes a calculation method for evaluating the shift of hearing threshold after a sonic weapon strikes, by calculating the three main factors of damage caused by noise weapons to the target, the sound wave intensity, sound wave frequency, and sound wave duration, and calculating the magnitude of the hearing threshold shift value so as to reasonably evaluate the sound wave The hearing threshold shift caused by the blow. The method comprises: transforming the influence of the three variables of sound wave intensity, sound wave frequency and sound wave duration on the dependent variable of hearing threshold shift size into a mathematical model of the influence of three continuous variables on a single dependent variable, and then performing a fitting diagram. Through the graphic method of the present invention, it is not only possible to calculate the hearing threshold transfer value F corresponding to a point whose arbitrary parameter is (SPL', freq', t'), but also to observe the value range of the hearing threshold transfer value F very intuitively, And the parameter value range corresponding to a certain hearing threshold transfer value F, so as to make a reasonable evaluation of the hearing threshold transfer after the sonic weapon strikes.

Description

technical field [0001] The invention belongs to the field of sound wave weapon evaluation, in particular to a calculation method and system for hearing threshold transfer after a sound wave weapon strikes. Background technique [0002] The impact of sonic weapons on human hearing is very obvious, and the long-term damage is mainly manifested as permanent loss of human hearing threshold. As a non-lethal weapon, sonic weapons must be used to control the damage within a reasonable range. Evaluating the degree of damage caused by sonic weapons is a key issue to prevent excessive damage to human hearing caused by sonic weapons. [0003] The main influencing factors of hearing damage caused by noise weapons include: sound wave intensity, sound wave frequency, and sound wave duration. The degree of impact on hearing loss varies. The assessment of hearing loss caused by noise weapons is mainly based on the calculation of human exposure to different levels of hearing loss. The size ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F41H13/00G06T11/20G06T17/00
CPCF41H13/0081G06T11/203G06T11/206G06T17/00
Inventor 周克栋缪桓举张俊斌赫雷罗建华陆野王希阔黄雪鹰
Owner NANJING UNIV OF SCI & TECH
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