METHOD AND APPARATUS FOR A HEARING AID COUPLING SYSTEM

摘要

An audio coupler device (204) for communication with a T-coil (207) in a hearing aid (208) is described to fit inside the receiver section of a handset (200) as defined. The coupler device (204) is so mounted inside the receiver section as to provide strong inductive coupling with a T-coil (207) inside the hearing aid (208) to deliver audio signals from the handset (200) to the person wearing the hearing aid. The coupling device (204) has a coil (232) and a magnetic core (8) that is preferably formed of a ferromagnetic material and a capacitor (234) is placed in series with the coil (232). The coupler device in turn is connected in series with the speaker (238) so as to reduce loading of circuitry inside the handset and driving the speaker. The coupler device can be mounted in many different handset device and is preferably mounted to concentrate an audio inductive field at the T-coil in a hearing aid worn by a person using the handset device.