Abstract:
A method and device is described and includes: obtaining an input audio signal associated with the voice input, obtaining a transcript resulting from the processing of the input audio signal, converting the transcript into a synthesized audio signal; extracting an acoustic feature of a same type from the input audio signal and synthesized audio signal, delivering a first sequence of features vectors associated with the input audio signal and a second sequence of features vectors associated with the synthesized audio signal converting the acoustic features to corresponding acoustic features associated with a target reference voice, delivering a first sequence and a second sequence of converted features vectors computing a dynamic time warping distance between the first sequence and second sequence of converted features vectors, and delivering data representative of a detection of an audio adversarial attack, as a result of a comparison between the dynamic time warping distance and a predetermined threshold.
Abstract:
A system and method are provided for detecting a behavior patterns of a user. In one embodiment, the method comprises receiving information about activities of a user and calculating duration of each activity. Each activity that exceeds a threshold duration is categorized and labelled accordingly. Activities with similar labels are grouped and labelled activities are analyzing. Alerts are then generated for certain behavioral patterns such as those exhibiting anomalies.
Abstract:
A method for downloading multimedia contents is disclosed. The multimedia contents exists in at least two versions. Each of the versions corresponds to a different required transmission bit rate and each of the versions is temporally divided into chunks corresponding to a determined duration, one chunk being identified by an item of information representative of a temporal position i and by an item of information representative of a version j. A content receiver implementing this method is also described.
Abstract:
The invention relates to a storage device management method allowing to manage the storage space, on a storage device, by proposing to an end user to store a new content he was going to consume if its storage determined size is lower than an already stored content size.
Abstract:
A method and device for detecting an audio adversarial attack with respect to a voice command processed by an automatic speech recognition system is described. The method is implemented by a detection device connected to the automatic speech recognition system and includes obtaining an audio signal associated with the voice command, performing a phonetic transcription of the audio signal, according to a phonetic transcription scheme, delivering a first character string; obtaining a transcript resulting from the processing, by the automatic speech recognition system, of the audio signal, performing a phonetic transcription of the transcript, according to the phonetic transcription scheme, delivering a second character string, computing a similarity score between the first character string and the second character string, and delivering a piece of data representative of a detection of an audio adversarial attack, as a function of a result of a comparison between the similarity score and a predetermined threshold.
Abstract:
The disclosure relates to a method for recognizing at least one naturally emitted sound produced by a real-life sound source in an environment comprising at least one artificial sound source. The method is implemented by an audio recognition device, and it includes simultaneously obtaining a first audio signal from a first microphone located in the environment and a second audio signal from an audio acquisition device associated with the at least one artificial sound source; analyzing the first audio signal, delivering a first list of sound classes corresponding to sounds recognized in the first audio signal; analyzing the second audio signal, delivering a second list of sound classes corresponding to sounds recognized in the second audio signal; and delivering a third list of sound classes, comprising only sound classes included in the first list of sound classes which are not included in the second list of sound classes.
Abstract:
Method and system of access of a mobile terminal to information in an area The present disclosure relates to the field of information retrieval and provides a system and method allowing a mobile terminal (10) to access information in an area. It relies on a dynamic and reconfigurable association between a mobile terminal and a collection of relevant information stored in the database of the area. To this end, the mobile terminal obtains an authorization (13) to access the area, which also enables the mobile terminal to access information relating to objects located in the vicinity of the mobile terminal at the time it enters the area. Such information is stored in a database relative to the area.