How do I know the sound on my computer is set right to correctly assess the noise clips?

The definitive source of noise data for consideration with this proposal is presented in Appendix J.

The noise clips are provided to illustrate what these noise levels may mean, and to illustrate what aircraft at a given altitude look like.

There is generally some ambient noise in the clips (eg bird song and/or talking) which may be used to approximately calibrate the volume control. However, these clips are for illustrative purposes only; the noise Tables in Appendix J should be considered by stakeholders wishing to understand the potential noise effects in detail.

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