GB/T 17248.1-2022Acoustics - Noise emitted by machinery and equipment - Guidelines for the use of basic standards for the determination of emission sound pressure levels at a work station and at other specified positions (English PDF)

1 Scope

This document describes ISO 11201, ISO 11202, ISO 11203, ISO 11201, ISO 11202, ISO 11203,

A framework for foundational standards such as ISO 11204 and ISO 11205 to guide the following.

--- Help write noise test specifications;

--- Provide a physical explanation for the amount of noise emission compared with other noise amounts (see 4.1~4.3);

--- Compare the different measurement methods given in the ISO 11201~ISO 11205 group of standards (see Table 1);

--- help in the selection of the most appropriate method in typical practical situations (see Chapter 6).

This document is mainly based on flow charts and tables, with example analysis given.

This document applies only to airborne sound, generally used for noise testing, especially for the preparation of noise testing specifications.

The purpose of developing a standard noise test specification is to select the most suitable

Standards for testing machinery and equipment, and give detailed requirements for installation conditions and working conditions for specific types of machinery and equipment, as well as the working conditions specified in these standards.

location and other specified locations.

The data obtained by the above method can be used for the marking and verification of the emission sound pressure level specified in ISO 4871 [3].

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

ISO 3741 Acoustic sound pressure method for determination of sound power level and sound energy level of noise source reverberation chamber precision method (Acoustics-Determi-

Note. GB/T 6881.1-2002 Acoustic Sound Pressure Method Determination of Noise Source Sound Power Level Reverberation Chamber Precision Method (ISO 3741.1999, IDT)

ISO 3743-1 Acoustic Sound Pressure Method for Determination of Sound Power Level and Sound Energy Level of Noise Sources - Engineering Method for Small Movable Sound Sources in Reverberation Fields

Note. GB/T 6881.2-2017 Acoustic sound pressure method for determination of sound power level and sound energy level of small movable sound sources in reverberation field of noise source engineering method

Wall test chamber comparison method (ISO 3743-1.2010, IDT)

ISO 3743-2 Acoustic sound pressure method Determination of noise source sound power level in reverberation field Small and medium movable sound source engineering method Part 2.

Note. GB/T 6881.3-2002 Acoustic sound pressure method for determination of sound power level of noise source in reverberation field of small and medium-sized movable sound source engineering method Part 2.Special

Reverberation test chamber method (ISO 3743-2.1994, IDT)

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