A hearing device, e.g. a hearing aid, is configured to be worn by a user, e.g. fully or partially on the head of the user, comprises a) an input transducer for converting a sound comprising a target sound from a target talker and possible additional sound in an environment of the user, when the user wears the hearing device, to an electric sound signal representative of said sound, b) an auxiliary input unit configured to provide an auxiliary electric signal representative of said target signal or properties thereof, c) a processor connected to said input transducer and to said auxiliary input unit, and wherein said processor is configured to apply a processing algorithm to said electric sound signal, or a signal derived therefrom, to provide an enhanced signal by attenuating components of said additional sound relative to components of said target sound in said electric sound signal, or said signal derived therefrom. The auxiliary electric signal is derived from visual information, e.g. from a camera, containing information of current vibrations of a facial or throat region of said target talker, and the processing algorithm is configured to use the auxiliary electric signal or the signal derived therefrom to provide the enhanced signal.