Patent ID: 6556686
Filing Date: 2003-04-29
Classification: H04L,H04R,H04W

Abstract:
A programmable hearing aid device adapted to be worn by a user, comprising:an acoustoelectric input transducer arrangement which receives incoming audio signals and which emits an electrical input signal corresponding thereto; an adjustable signal processing circuit connected to said input transducer arrangement, and supplied with said electrical input signal, for processing said electrical input signal dependent on an adjustment status of said signal processing circuit, and which emits a processed signal; an electroacoustic output transducer connected to said signal processing circuit and supplied with said processed signal, and emitting an output audio signal corresponding to said processed signal; said acoustoelectric input transducer arrangement and said signal processing circuit forming a combination having a number of properties selected from the group consisting of functions, performance features and programmable adjustments of said signal processing circuit; and at least one installed key software that is incapable of actuation by said user, which generates a key signal supplied to said signal processing circuit for performing a key function which alters the number of said properties available to said user so that at least one of said properties is not available to and is incapable of being selected by said user.