Hearing aid

A hearing aid for amplifying an acoustic signals comprising:

• a controller for determining in real time a frequency band at the highest level of the acoustic signals through frequency analysis of the acoustic signals that vary over time, and for generating a control signal to raise a gain for signals of a higher frequency range than the frequency band at the highest level;
• and
• a first amplifier, in which the control signal from said controller is inputted so that the frequency characteristics are varied, for amplifying the acoustic signals by increasing the gain for signals of the higher frequency range than the frequency band at the highest level, and
• wherein the first amplifier, comprises an amplification apparatus in which a plurality of sub-amplifiers with different frequency characteristics, each capable of gain control, are connected in parallel, and the outputs of the plurality of sub-amplifiers are added together.

A hearing aid for amplifying an acoustic signals comprising:

• a controller for determining in real time a frequency band at the highest level of the acoustic signals through frequency analysis of the acoustic signals that vary over time, and for generating a control signal to raise a gain for signals of a higher frequency range than the frequency band at the highest level;
• and
• a first amplifier, in which the control signal from said controller is inputted so that the frequency characteristics are varied, for amplifying the acoustic signals by increasing the gain for signals of the higher frequency range than the frequency band at the highest level, and
• wherein said controller comprises a band-pass filter group, a diode matrix, and a comparator group.

A hearing aid for amplifying an acoustic signals comprising:

• a controller for determining in real time a frequency band at the highest level of the acoustic signals through frequency analysis of the acoustic signals that vary over time, and for generating a control signal to raise a gain for signals of a higher frequency range than the frequency band at the highest level;
• and
• a first amplifier, in which the control signal from said controller is inputted so that the frequency characteristics are varied, for amplifying the acoustic signals by increasing the gain for signals of the higher frequency range than the frequency band at the highest level, and
• wherein said first amplifier comprises a parametric equalizer.