View source for AMBIsense/en

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== Data formats ==

Within the AMBIsense solution, measurements of the 1/3-octave band spectrum are performed. The results of these measurements can be exported in multiple formats:

* as a self-explanatory CSV table;
* as one of the following very simple, yet efficient proprietary binary formats:
** a phen1 file: a very restrictive format that keeps small datasets as small as possible, while maintaining random access on row level;
** an [[ASAsense Binary Table (ABT) format/en|ABT]] file: a binary table format with fast and efficient random access (both on row and column level).

== Instant measurements ==

The AMBIsense sensors can be configured to send instant measurements to a dedicated MQTT broker. These have the following structure:

* audio measurements (8 messages / s):
** topic: <code>/instant/<deviceName>/measurements</code>
** payload, in msgpack:
*** timestamp: float
*** dBA: float (sound level)
* classifications (frequency depends on the model):
** topic: <code>/instant/<deviceName>/classification/<modelId>/<modelVersion></code>
** payload, in msgpack:
*** timestamp: float
*** confidences: float[] for each class