Patent ID: 8199946

Claim:
A hearing aid, comprising: a sound receiver that receives a sound wave and generates a microphone signal representing the sound wave; a sound generator that generates a sound depending on a power signal; a transmission unit connected between the sound receiver and the sound generator that: generates the power signal depending on the microphone signal, and modifies a transmission characteristic of the transmission unit as a function of a tag signal; and an RFID receiver connected to the transmission unit that generates the tag signal based on a radio frequency tag presented and electromagnetically detected in a detection zone, wherein the RFID receiver is configured to generate the tag signal based on one of a plurality of radio frequency tags attached to different telephones, wherein the transmission unit is configured to generate the power signal based on a transfer function and a frequency or an amplitude of the microphone signal, wherein the transfer function is selected from at least two transfer functions based on the tag signal, wherein a first transfer function is assigned to a predefined class of tag data items in the radio frequency tags, wherein a second transfer function is assigned to an individual item of tag data in the radio frequency tags, and wherein the hearing aid is configured to switch between the first transfer function for all the telephones and the second transfer function for an individual adaption to a particular type of telephone.