The invention relates to a method controlling a transmission system composed of at least one transmitter ($1 . . . Sn) and at least one receiver (1), a signal (S.sub.in) which is modulated in amplitude, frequency and/or phase being transmitted through an information channel (120). In the invention, configuration parameters are transmitted through a control channel (110 . . . 113) to the receiver (1), said transmission through said control channel (110 . . . 113) being independent of any transmission implemented through the information channel (120). On the basis of the transmitted configuration parameters, adjustments are implemented in the receiver (1), in particular relating to demodulating the signal (S.sub.in) transmitted through the information channel. The invention furthermore relates to method applications, to a transmission system, to a receiver and to a hearing aid.