Method for operating an apparatus for tinnitus characterization and corresponding apparatus

An apparatus for tinnitus characterization, comprising:

• a signal generator;
• a controller having a memory and a random number generator, said controller programmed to:
• perform a first step which comprises the substeps of:
• generate, via said signal generator, a broadband test signal having a plurality of narrowband signal frequencies disposed adjacent to each other;
• output the broadband test signal to a user for masking a tinnitus noise;
• compare the broadband test signal with the tinnitus noise to determine a masking effect the broadband test signal has on the tinnitus noise;
• store the broadband test signal with an associated comparison result in said memory of said controller;
• and
• determine a probability correlation for determining the tinnitus noise based on stored broadband test signals and associated comparison results, wherein in a case of a positive comparison result where the tinnitus noise is masked by the broadband test signal, the probability correlation for determining the tinnitus noise based on a correlation among commonalities of all positive comparison results being determined from the stored broadband test signals and the associated comparison results;
• perform a second step which varies amplitudes of individual ones of the signal frequencies of the broadband test signal via said random number generator, wherein the first threshold value corresponding to a minimum number of the positive comparison results having a minimum probability that the broadband test signal derived from the probability correlation masks the tinnitus noise;
• repeatedly perform the first and second steps until the probability correlation reaches or exceeds a first threshold value;
• perform a third step which varies the amplitudes of individual ones of the signal frequencies of the broadband test signal with reference to the probability correlation resulting in a modified broadband test signal;
• and
• repeating the first and third steps with the modified broadband test signal having the signal frequencies with varied amplitudes based on the probability correlation until the probability correlation reaches or exceeds a second threshold value and storing the modified broadband test signal in the memory.