GB/T 17248.5-2018 Acoustics—Noise emitted by machinery and equipment—Determination of emission sound pressure levels at a work station and at other specified positions applying accurate environmental corrections

Scope

This part of GB/T 17248 specifies a method for measuring the sound pressure level emitted by machines and equipment in an environment that meets certain requirements, at the working position and other specified locations nearby (see Appendix D for the method principle). The working position is the location where the operator is located, which can be in an open space, a workshop where the measured sound source is operating, an operating room that is fixedly connected to the measured sound source, or a closed space far from the sound source. Other specified locations can be located near the working position, or near machines that are either attended or unattended, and these locations are sometimes referred to as bystander positions.
The emitted sound pressure level can be measured using A-weighting, and if necessary, it can also be measured using frequency-band sound pressure levels and C-weighted peak sound pressure levels in accordance with this part.

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