Method for directional signal processing for a hearing aid and hearing system

A method for directional signal processing for a hearing aid, the method comprising:

• generating a first input signal from a sound signal of the surroundings by using a first input transducer of the hearing aid;
• generating a second input signal from the sound signal of the surroundings by using a second input transducer of the hearing aid;
• forming each of a first directional signal and a second directional signal based on the first input signal and the second input signal;
• providing the second directional signal with a relative attenuation in a direction of a first useful signal source;
• providing the first directional signal with a relative attenuation in a direction of a second useful signal source;
• ascertaining a first amplification parameter for an amplification of a first useful signal of the first useful signal source and a second amplification parameter for an amplification of a second useful signal of the second useful signal source;
• defining a reference directional characteristic for a reference directional signal;
• based on at least one of the first amplification parameter or the second amplification parameter as a function of the reference directional characteristic, ascertaining a corrected first amplification parameter and a corrected second amplification parameter, causing an output directional signal, formed as a sum of the first directional signal weighted by using the first corrected first amplification parameter and the second directional signal weighted by using the corrected second amplification parameter, to merge into a linearly scaled reference directional signal upon the first amplification parameter being equal to the second amplification parameter;
• and
• at least one of the corrected first or second amplification parameters being different from the corresponding underlying amplification parameter.