A device for a vehicle, in particular an autonomous vehicle, for providing bidirectional communication between the vehicle and at least one passer-by, comprising: a sensory device for detecting passers-by in an environment of the vehicle an array arranged on the vehicle and comprising a plurality of loudspeakers and a plurality of microphones for providing acoustic beamforming focused in a predetermined area around the position of a detected passer-by for transmitting acoustic signals to the passer-by and for receiving acoustic signals from the passer-by; and a computer-based recognition device for recognizing and interpreting passer-by gestures and/or acoustic signals of the passer-by, wherein: the interpretation comprises an association of the recognized gestures and/or the recognized acoustic signals of the passer-by with a specific action of the vehicle; the computer-based detection device is coupled with the sensory device and the array; the computer-based recognition device is also designed to execute an action of the vehicle on the basis of a recognized passer-by gesture and/or a recognized acoustic signal of the passer-by and its interpretation, the action of the vehicle comprises at least a reproduction of an acoustic signal to the passer-by and/or a reception of a visual and/or acoustic signal from the passer-by, characterized in that the device is configured to adapt the acoustic beamforming as a function of a speed of the vehicle and a speed of movement of the passer-by. a sensory device for detecting passers-by in an environment of the vehicle an array arranged on the vehicle and comprising a plurality of loudspeakers and a plurality of microphones for providing acoustic beamforming focused in a predetermined area around the position of a detected passer-by for transmitting acoustic signals to the passer-by and for receiving acoustic signals from the passer-by; and a computer-based recognition device for recognizing and interpreting passer-by gestures and/or acoustic signals of the passer-by, wherein: the interpretation comprises an association of the recognized gestures and/or the recognized acoustic signals of the passer-by with a specific action of the vehicle; the computer-based detection device is coupled with the sensory device and the array; the computer-based recognition device is also designed to execute an action of the vehicle on the basis of a recognized passer-by gesture and/or a recognized acoustic signal of the passer-by and its interpretation, the action of the vehicle comprises at least a reproduction of an acoustic signal to the passer-by and/or a reception of a visual and/or acoustic signal from the passer-by, characterized in that the device is configured to adapt the acoustic beamforming as a function of a speed of the vehicle and a speed of movement of the passer-by. the interpretation comprises an association of the recognized gestures and/or the recognized acoustic signals of the passer-by with a specific action of the vehicle; the computer-based detection device is coupled with the sensory device and the array; the computer-based recognition device is also designed to execute an action of the vehicle on the basis of a recognized passer-by gesture and/or a recognized acoustic signal of the passer-by and its interpretation, the action of the vehicle comprises at least a reproduction of an acoustic signal to the passer-by and/or a reception of a visual and/or acoustic signal from the passer-by, characterized in that the device is configured to adapt the acoustic beamforming as a function of a speed of the vehicle and a speed of movement of the passer-by.