HEARING DEVICE COMPRISING A VENT WITH AN ADJUSTABLE ACOUSTIC VALVE

There is provided a hearing device comprising a housing (12) configured to be at least partially inserted into an ear canal (14) of a user and comprising a vent (16), wherein the vent is configured to provide for venting between an inner region (18) of the ear canal and an ambient environment (20) outside the ear canal through the vent, an acoustic valve (22) comprising a valve member (24) configured to adjust an effective size of the vent and an actuator (26) configured to actuate the valve member for adjustment of the effective size of the vent, and an acoustic output transducer (36) acoustically coupled to the inner region of the ear canal and configured to generate a sound output according to an audio signal supplied to the acoustic transducer. The hearing device further comprise a control unit (38) operatively connected to the actuator and the acoustic output transducer and configured to control the audio signal supplied to the acoustic output transducer such that the sound output is modified during adjustment of the valve member compared to the sound output during times with no adjustment of the valve member in a manner so as to reduce or eliminate the user's perception of sound resulting from adjustment of the valve member.