Abstract: A graphical interface is provided to select parameters for fitting a hearing device. The graphical interface provides means visually representing and controlling values of these parameters using a common reference axis for multiple parameters related by a programmable constraint. The common reference multiple parameter structures convey information to a user about the interactions between parameters and the limits of the parameters. Further, parameters related by a constraint relation are displayed on graphical structures having a common path, such that movement of a slider representing a parameter can be limited within the bounds of the programmed constraints. Such limited movement is visually conveyed to the user allowing the user to make appropriate adjustment to remain within the limits of the constraint while programming a hearing device for improving performance.

Abstract: Systems, devices and methods are provided for selectively coupling hearing aids to electromagnetic fields. One aspect relates to a hearing aid device. In various embodiments, the hearing aid device includes an induction signal receiver for receiving induction signals, a microphone system for receiving acoustic signals, a hearing aid receiver, and a signal processing circuit. The signal processing circuit includes a proximity sensor for detecting an induction source. The signal processing circuit presents a first signal to the hearing aid receiver that is representative of the acoustic signals. When the induction source is detected, the signal processing circuit presents a second signal to the hearing aid receiver that is representative of the induction signals and transmits a third signal representative of the induction signals from the hearing aid device to a second hearing aid device. Other aspects are provided herein.