声学车内噪声的测量

[中文适用范围]： 本文件规定了在典型驾驶条件下测量 M 和 N 类道路车辆内部噪音的工程方法。它不适用于农业拖拉机和田间机械。它规定了获得可重复和可比较的车辆内部声压级测量值的条件。这些测量用于在典型驾驶周期内获得具有代表性的平均声级，以便评估对人体健康的不利影响。结果可用于 - 标准化内部噪音评估，用于比较（例如基准、消费者信息程序）； - 验证测试，以确定车辆内部噪音是否符合规格； - 监管目的，例如评估与劳动或一般健康标准有关的声音；以及 - 监测测试，以检查车辆内部噪音自交付以来是否没有发生变化，或者一批车辆的各个单元之间是否没有发生变化。本文件确实以通常用于对人体健康的科学影响的方式评估了车辆内部噪音的暴露情况。它不会评估极端驾驶情况下车辆的最大内部声音，因为当今测量的车辆内部最大声压级远未达到造成瞬间听力损伤的风险。 [外文原描述]： This document specifies an engineering method for measuring the interior sound of road vehicles of categories M and N under typical driving conditions. It does not apply to agricultural tractors and field machinery. It specifies the conditions for obtaining reproducible and comparable measurements of sound pressure levels inside a vehicle. These measurements are used to obtain a representative average sound level during a typical driving cycle to enable assessment of adverse effects on human health. The results can be used for — standardized assessment of interior sound for comparisons (e.g. benchmark, consumer information programs), — verification tests, to decide whether or not the sound inside the vehicle is in accordance with specifications, — regulatory purposes, for example for evaluation of sound in relation to labour or for general health standards, and — monitoring tests, in order to check that the sound inside the vehicles has not changed since delivery, or between individual units of a consignment of vehicles. This document does evaluate the exposure to interior sound of vehicles in a way as it is commonly used for scientific effects on human health. It does not assess maximum interior sound of a vehicle under extreme driving situations, as today’s measured maximum sound pressure levels inside vehicles are far away from the risk to create instantaneous hearing damages.