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ggrecow / SQAT

SQAT is an open-source repository of MATLAB codes containing the implementation of key metrics for quantitative sound quality analysis.
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Error in noys table #9

Closed mlotinga closed 3 months ago

mlotinga commented 3 months ago

There seems to be an error in the noys table used for PNL calculations. Row 22

22 6300 inf 31 31 10 17 0.02996 0 0.06816 0.037349

should be

22 6300 inf 31 31 10 17 0.02996 0.02996 0.06816 0.037349

according to table A2-3 of Appendix 2 of the ICAO 2017 Annex 16 Volume 1 (amd 2021)

Made a pull request to address it https://github.com/ggrecow/SQAT/pull/8

mlotinga commented 3 months ago

Strange. There is a discrepancy between the ICAO published Annex 16 Vol 1 Appendix 2 Table A2-3 (amd 2021) and the FAA published Title 14 Part 36 Appendix A Table A36-3 (amd 2024)

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Which one is correct?!

mlotinga commented 3 months ago

The FAA one is correct, as M(c) depends on SPL(a), so is not used when SPL(a) = inf. Therefore the value of M(c) at SPL(a) in row 22 is irrelevant.