| 摘要 |
<p>A hearing aid having an Electrete microphone (1) comprises an amplifier (8) connected to the output side of the microphone via an HF-filter device having in particular a frequency range between 900 and 1600 MHz. In order to provide a hearing aid with an effective interference suppression, an HF-filter device can be used consisting of two capacitors (2, 3) which are arranged between the signal output (7) of the microphone, the ground connection (15) and the supply connection (6).</p> |
