Abstract: A method is presented of evaluating a wireless connection while fitting a hearing aid. The method comprises the steps of sending a signal via the wireless connection from a computer system (103) to a portable device (102), receiving the signal in the computer system via the wireless connection from the portable device, thereby obtaining information about the wireless connection, evaluating the information in the computer system through retrieving a current value representative of the quality of the wireless communication, smoothing the current value thereby obtaining a smoothed value, and providing a quality parameter based on the smoothed value. Also a system for fitting a hearing aid, a computer program, and a computer system adapted to the use of such a method are presented.

Abstract: A system for providing a talk-over functionality from an attendant to a hearing aid user comprises a hearing aid (4), a link device (5) connected to the hearing aid (4), a computer (7) with a talk-over microphone (9), and a communications link (6) linking the computer (7) to the link device (5), the hearing aid user, the hearing aid (4), and the link device (5) being positioned in a sound-proof box (1). The computer (7) is adapted for receiving signals from the microphone (9), and for executing audio processing software for processing the microphone signals for converting them into compressed, digital audio signals and transmitting these signals via the communications link (6) to the link device (5). The link device (5) is adapted for decompressing the received signals and converting them into audio signals to be served to the hearing aid (4) in real-time. The system enables an attendant or a hearing aid fitter to talk to a hearing aid user via the communications link (6).

Abstract: A battery-powered hearing aid (1) is programmed via a programming device (2), the hearing aid (1) having a battery (11) and a line connection (3, 4) for connecting the battery (11) to the programming device (2). The programming device uses a variable voltage source (5) and an input comparator (6) with a first and a second input terminal and an output terminal to output a variable voltage to one input of the input comparator (6) and determining the voltage of the hearing aid battery (11) by using the second input of the input comparator (6) of the programming device (2). By ramping the output of the variable voltage source (5) used as a reference, the voltage of the battery (11) can be determined with great accuracy using existing hearing aid programming circuitry.