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Please use our app outdoors. Measuring inside your home will ‘pollute’ our database with values that are at least 15 dB lower than the actual aviation noise level.Beware of the wind. The microphone of your smartphone can be sensitive for strong winds. Please measure aviation noise preferably out of the wind.Point your device’s microphone at the airplane during the sound measurement. If you do so you will register the most reliable noise level.If you want to share our news articles that are shown in the app: please visit our weblog at https://cms.explane.org.