a sound generator 17 r and a transmitter tr of hearing device 10 r are drawn hearing device 10 l comprises a receiver re although drawn as separate units the dsp 13 r and the amplifier 14 r may be integrated within the same software or electrical unit in addition also the controller or control software 15 r may be integrally formed with dsp 13 r and or amplifier 14 r the hearing device controlling software 15 l 15 r may be implemented in a separate processor but does not have to the same applies for the corresponding elements of the hearing device 10 l in fig1 it is sketched how a concurrent or practically jitter free perception by the user of an acknowledge sound e g upon a volume change in hearing device 10 r can be achieved the user manipulates the user interface 16 r in order to change the volume loudness of signals 7 8 he perceives typically the loudness in both hearing devices shall be changed this generates a control signal whereupon the sound generator 17 r is instructed by the controller 15 r to generate an appropriate sound message acknowledge signal which is referred to as first audio signals 30 the first audio signals 30 are on the one hand fed to the output transducer 12 r e g via dsp 13 r and amplifier.