FIELD: information technology.
SUBSTANCE: external acoustic signals are periodically measured using a microphone built into the mobile device. The external acoustic signals are recorded into a file which, at the end of recording, is converted to a numerical array of values of the level of external acoustic signals. The numerical array of defined length is broken. The level of acoustic signals is calculated for each section. A series of given length consisting of a subseries of running values of the calculated levels of acoustic signals is selected. For the selected series, the minimum value of the level of acoustic signals is selected, which is then compared with a given threshold and a decision is made on the state of the user mobile device based on the comparison results.
EFFECT: broader functional capabilities owing to determining whether the mobile device is inside or outdoors.
3 cl, 6 dwg
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