Secure communication system with speaker recognition by voice biometrics for user groups such as family groups

Communication system managing the communications of a plurality of user groups and authorizing secure communications between members of the same group (GF), comprising a computer server and a plurality of user computing devices including mobile devices, said computer server and said plurality of user computing devices being connected to a wide area data communication network (IP) of the internet type allowing voice communications, said system also comprising speaker recognition means including artificial intelligence means, characterized in that said speaker recognition and access authorization means also comprise voice signal analysis means having cascaded first and second wavelet transform calculation modules producing a scalogram of a speaker voice signal by means of a discrete wavelet transform followed by a continuous wavelet transform, said scalogram being inputted to said artificial intelligence means for the recognition of the speaker.