Processing an input signal in a hearing aid

1. A method for processing a plurality of input signals in a hearing aid, the plurality of input signals including a first input signal and a second input, the method comprising:

filtering the first input signal with a first coefficient for creation of a first intermediate signal;

filtering the first input signal with a second coefficient for creation of a second intermediate signal;

filtering the second input signal with a third coefficient for creation of a third intermediate signal;

filtering the second input signal with a fourth coefficient for creation of a fourth intermediate signal;

adding the first intermediate signal and the third intermediate signal to form a first output signal adding the second intermediate signal and the fourth intermediate signal to form a second output signal;

assigning the first input signal and the second input signal to a defined signal situation;

changing at least one of the coefficients as a function of the assigned defined signal situation; and

determining a correlation of the first output signal and of the second output signal; and

changing at least one of the coefficients as a function of the correlation,

wherein a maximum correlation is defined as a function of the assigned defined signal situation, and

wherein the changing at least one of the coefficients being changed as a function of the correlation occurs until the correlation corresponds to the maximum correlation.

2. The method as claimed in claim 1 , wherein the maximum correlation is smaller than 0.5.

3. The method as claimed in claim 1 , wherein the first and second output signals are mixed to create an output signal for an acoustic output which is amplified.

4. The method as claimed in claim 1 , wherein the assignment to the defined signal situation is as a function of at least one of the classification variables selected from the group consisting of number of individual signals, level of an individual signal, a distribution of a level of the individual signals, a power spectrum of an individual signal, and a level of the input signal.

5. The method as claimed in claim 1 ,

wherein the defined signal situation is predetermined, and

wherein the coefficients are multi-dimensional.