Hand-BCG signals dataset

<strong>General description</strong> This repository contains Ballistocardiogram signals collected from multiple users while they were holding a mobile phone in hand. In consists of 2 different datasets made up of multiple recordings from a total of 217 different users. The main characteristics of these datasets are given below. +---------------+------------+-----------------+------------------------------+-----------------------+-------------------+--------------------+------------+-----------+<br> | | # users | Age range | # sessions per user | session length | Pos. of hand | Phone | Acc. Fs | Gyr. Fs |<br> +---------------+------------+-----------------+------------------------------+-----------------------+-------------------+--------------------+------------+-----------+<br> | Dataset A | 105 | 20-32 | 1 | 30s | Free hand | Google Pixel | 50 Hz | 400 Hz |<br> +---------------+------------+-----------------+------------------------------+-----------------------+-------------------+--------------------+------------+-----------+<br> | Dataset B | 112 | 20-60 | 10 | 30s / 45s | On table | Samsung S8 | 100 Hz | 500 Hz |<br> +---------------+------------+-----------------+------------------------------+-----------------------+-------------------+--------------------+------------+-----------+ <strong>Content of each dataset</strong> Each dataset is made up of multiple files, with each file corresponding to a given measurement session. The name of a given file indicates some metadata about the measurement session itselft. It is assigned based on the following template: <em>&lt;UserId&gt;-&lt;Gender&gt;-&lt;Age&gt;yrs-&lt;SignalLength&gt;_&lt;Year&gt;-&lt;Month&gt;-&lt;Day&gt;:&lt;Hour&gt;-&lt;Minute&gt;-&lt;Second&gt;.csv</em> The content of the file itself corresponds to the sensor readings collected during the measurement session. It is a collection of timestamped sensor values, reported in a comma-separated format. The first column represent the timestamp of the sensor event (in nanoseconds), the second one the type of the considered sensor and the 3 following ones the actual values along the different axis. Please refer to the official Android SensorEvent documentation for more details.