| 摘要 |
A hearing aid includes a first microphone, a second microphone and a telephone coil for alternatively providing an electrical signal representative of a received acoustic signal, a magnetic switch and a plurality of programs for configuring the output from the microphones and the telephone coil. The hearing aid can further include a magnetic switch and a manual switch for selecting between inputs and programs. Upon detecting the presence of a magnetic field, the magnetic switch can automatically switch from the microphones to the telephone coil and change the program configuring the input. When the magnetic field is no longer present, the magnetic switch can automatically switch back to the microphone from the telephone coil and change the program configuring the input back to the program used before the exposure of the magnetic switch to the magnetic field. The manual switch can switch between the plurality of programs and between the microphones and telephone coil.
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