Hearing aid and method for eliminating acoustic feedback in the amplification of acoustic signals

A method for setting a frequency-dependent gain in a hearing aid, said hearing aid comprising

• a sensor element configured to be arranged at a body of a hearing-impaired user and to capture ambient sound,
• a signal processor configured to amplify said captured ambient sound with said frequency-dependent gain such that said amplified captured sound is audible to the hearing-impaired user, said signal processor being further configured for automatic re-adjusting of the frequency-dependent gain,
• a transmission element for outputting said amplified captured ambient sound,
• a data memory, and
• an energy store,
• said automatic re-adjusting of said frequency-dependent gain comprising the following steps:
• selecting a tone at a specific frequency;
• outputting the tone and, if existent, said amplified captured ambient sound the via said transmission element to produce an output sound;
• capturing an analysis sound, which comprises said ambient sound, if existent, and a reflection of said output sound, by means of the sensor element;
• extracting a reflection of the supplied tone from the captured analysis sound;
• determining a reflection component for the specific frequency of the tone;
• and
• adjusting the gain in a frequency-specific manner on the basis of the so-determined reflection component.