Abstract: A method and a device for characterizing a user, in particular a user of a device and/or a service in the field of computer security. The characterization method includes: a comparison of first data associated with a first sound object spatialized at a first location by a user interface of a communication terminal and second data received following the reproduction of the first spatialized sound object, the second data being based on a second spatialized sound object perceived at a second location. The comparison triggers, in the event of a positive result, a characterization of the source of interaction as being a suitable user. Thus, errors in characterizing a user as a suitable user, in particular a human user, are reduced because existing sound and speech recognition systems are not able to select a sound in a spatialized sound environment, i.e. a 3D audio scene.

Abstract: Systems and methods are disclosed for modelling of individual acoustic transfer functions relative to the audition of an individual in three-dimensional space. A method is provided for modelling sets of acoustic transfer functions specific to an individual according to a multiplicity of directions in space, where a set of acoustic transfer functions specific to the individual in a given direction is determined depending on the result of a statistical analysis of a plurality of distinct stimuli emitted in the direction of the individual. A stimulus can be dependent on at least one set of predetermined acoustic transfer functions that are associated with the given direction, and on responses received from the individual to each emitted stimulus.

Abstract: Systems and methods are disclosed for modelling of individual acoustic transfer functions relative to the audition of an individual in three-dimensional space. A method is provided for modelling sets of acoustic transfer functions specific to an individual according to a multiplicity of directions in space, where a set of acoustic transfer functions specific to the individual in a given direction is determined depending on the result of a statistical analysis of a plurality of distinct stimuli emitted in the direction of the individual. A stimulus can be dependent on at least one set of predetermined acoustic transfer functions that are associated with the given direction, and on responses received from the individual to each emitted stimulus.