Patent ID: 9065578
Filing Date: 2015-06-23
Classification: G10L,H04H,H04L

Abstract:
1. A method of delivering content to at least one mobile communication device in a computing environment comprising software for detecting audio watermark in a watermarked audio signal broadcasted by at least one local audio transmitter and if necessary triggering an event on the mobile communication device, the method comprising: the mobile communication device periodically determining a user local profile, the local profile comprising a localization of the mobile communication device; the mobile communication device periodically sending, to a remote server, a request for parameters of at least one audio watermark i, the parameters comprising N frequency bands F the mobile communications device receiving the parameters from the remote server, if necessary, the parameters having been selected by the remote server in view of the user local profile so that the event is relevant for the user; the mobile communication device storing in its memory the parameters; the mobile communication device polling its environment for acquiring an audio signal and processing the audio signal in: computing the likelihood function corresponding to each watermark to be studied; if the result of the likelihood function exceeds the likelihood threshold, triggering the corresponding event on the mobile communication device.