NoiseCapture protocol

You can also click
on the following shortcut ...

...or flash the this QR Code.

Once you launched the application, you will arrive on this "home page" (see on the right). In this interface, you have:

1. dB value: real time noise level (exprimed in dB(A)),
2. GPS precision: exprimed in meter, this information show you if your smartphone is well geolocalized or not. We assume that the localization is good under 10 meters,
3. Noise representation (see "Measuring modes" below),
4. Recording button: press it to start the measure.

Once you started the recording (you clicked on the dedicated icon), you obtain this interface (on the left), with the following informations:

1. dB value: real time noise level (exprimed in dB(A)),
2. Noise statistics: min, moy and max noise dB values,
3. Measure's duration,
4. GPS precision, exprimed in meter,
5. Noise representation (see "Measuring modes" below),
6. Stop recording button: press it to stop the measure,
7. Pause recording button: press it to pause the measure.

During the recording, you have the possibility to change the representation mode. Here, by clicking on the dedicated tabs, you have the choice between:

1. Spectrum: the noise is represented thanks to frequencies bands,
2. Spectrogram: the noise is displayed as a graph with two geometric dimensions: the horizontal axis represents time, while the vertical axis is frequency; a third dimension (color) indicating the amplitude in dB(A),
3. Map : follow in real time on the map where you already made measures and where you should go.

When your measure is finished, you are invited* to describe your track through the following entries:

1. Free description: Describe your measure thanks to a free text**,
2. NoiseCapture party code: specify the code of your party (see NoiseCapture party),
3. Take a photo to illustrate your track**,
4. Pleasantness indicator: rate your measure,
5. Measure conditions: click on the appropriate tags,
6. Main noise sources: click on the appropriate tags (in this example, "Roads" and "Industrial" are selected),
7. Clear the measure,
8. Validate the description and your measure.

* If you don't want to add description, just press the "Validate" icon,
** This information is private and is not uploaded on our server.

Once you validated the description part, you can see the resulting measure informations. Here you have:

1. Noise indicators: min, LA90, LA50, LA10 and max values,
2. Mean noise level, exprimed in dB(A),
3. Noise exposure distribution: time repartition of the different dB classes,
4. Mean noise spectrum chart,
5. Share the mesure (thanks to e-mail, ...) or your Twitter account,
6. Go back to "Measure" panel,
7. If your smartphone has no internet connexion, the measure will not been uploaded to our server. Once you obtain a connexion, press this button to send us your measure,
8. Show the resulting measure in the map.

In the map panel, you have:

1. Zoom tools,
2. Background layer selector: choose between "OpenStreetMap" layer, or a satellite imagery,
3. Noise layer selector: check the layer you want to display. You choose to visualize your last measurement, all your past contributions or the community map*,
4. The map, displaying the choosen layers,
5. The legend.

* You can also access this community map with a web browser from a computer (recommended solution for better display) with the following web link: https://noise-planet.org/map_noisecapture/index.html.

In the application menu, you can access to the "History" page. Here you can:

1. See the list of all your past measures. A color indicator gives you an indication on the mean dB level of the measure. Informations concerning the duration and the date are also displayed,
2. Visualize a cloud icon that indicates if the measure has been uploaded or not on our server (blue means that it has been uploaded).