Average deviation Explane app only 2 decibels

Just before the summer holidays we organized a calibration day with a large number of volunteers to find out to what extent the measurements with the free Explane app correspond to the real noise level. On average, Explane appears to deviate only 2 dB from a calibrated dB meter.

Photo by Aaron Barnaby via Unsplash

Explane.org and SchipholWatch are very happy with these results, especially since the measurements with Explane now appear to be more reliable than the calculations by the Dutch Ministry of Infrastructure & Water Management and those of Amsterdam Schiphol Airport.

‘6 dB is within expected margins’
As a reminder: the measurements of a test flight mid-last year (‘experience flight’) were sometimes as much as 6 dB higher than the previously calculated values. The minister, Cora van Nieuwenhuizen, called this deviation “well within the expected margins”. Read more >

Problem with Google Maps

Since a few weeks our app shows an error warning from Google Maps. We will soon repair this. The warning does NOT affect the functionality of the app, so you can keep sending us your noise registrations.

The warning is actually very positive news. It tells us that our period of free use of Google Maps is over. We now have to pay for the use. This is a direct result of the wide and intensive use of the app. When we started it, we did not expect so many users and so many registrations in such a short period.

We now already have 70,000 registrations of aviation noise in our database. A technical university in The Netherlands will research the data, and we are invited to insert the Explane-data in a ‘civic science’ project of the Dutch health research institute. Read more >

Please sign our petition

Yesterday evening we have started a petition to stop growth at Amsterdam Airport Schiphol. Do you also want a cap on further growth? Please sign our petition!

You can find the petition (in Dutch) at https://petities.nl/petitions/nee-tegen-groei-van-schiphol.

Within 24 hours it has been signed by (almost) a thousand people, most of them residents of communities that are terrorised by aviation noise and pollution.

Please sign the petition and share this message by visiting https://cms.explane.org.

‘No airplane captured’

At this moment our app Explane reports more often than normal that there is no plane to be found in the noise that you tried to capture.

The reason for this is that work is being done on the database that supplies the aircraft data to Explane. The Open Sky Network – supplier of this information – is working on improvements to its systems.

The network reported this a few days ago via Twitter:

Unfortunately we do not know how long this maintenance will take. We do hope to be able to inform you as soon as possible if the systems are running as usual (or better)!

We hope for some consideration from your site. Unfortunately the cause is beyond our control. Read more >