3M SE, DL user manual Weighting A, C, Z, F, Figure B-5All frequency weightings plotted together

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Appendix B

Weighting (A, C, Z, F)

SPL measurements are commonly weighted (scaled) in relation to their frequency components in order to provide a consistent basis for comparison to other measurements of the same type. In addition to the standardized A, C and Z weighting curves, you can select F- weighting (flat) which provides no weighting at all. The four SoundPro SE/DL weighting curves are plotted together in Figure B-5, where the F-weighting curve has been shifted up by 5 dB for graphical clarity. The tolerance limits for F frequency weighting are the same as A, C, and Z frequency weighting.

Figure B-5:All frequency weightings plotted together

Windscreen

A covering for a microphone that reduces disturbances caused by wind and direct contact with other surfaces.

Models SE and DL