Method for operating a hearing aid system having a hearing instrument, hearing aid system and hearing instrument

A hearing aid system, comprising:

• a hearing instrument containing:
• at least one electro-acoustic input transducer for generating an input signal from an acoustic signal of an environment;
• a signal processor for generating an output signal from the input signal;
• an electro-acoustic output transducer for generating an output acoustic signal from the output signal;
• an artificial neural network being implemented in said hearing instrument and configured to perform at least one sub-process of signal processing implemented in said signal processor for generating the output signal from the input signal;
• and
• the hearing aid system configured to define a topology of said artificial neural network and/or to select weights between individual neurons of said artificial neural network according to an operation to be performed in the sub-process and/or according to an ambient situation and/or according to a user input by a user of the hearing aid system.

A hearing instrument, comprising:

• at least one electro-acoustic input transducer for generating an input signal from an acoustic signal of an environment;
• a signal processor for generating an output signal from the input signal;
• an electro-acoustic output transducer for generating an output acoustic signal from the output signal;
• an artificial neural network which is configured to carry out at least one sub-process of a signal processing implemented in said signal processor for generating the output signal from the input signal;
• and
• the hearing instrument configured to define a topology of said artificial neural network and/or to select weights between individual neurons of said artificial neural network according to an operation to be performed in the at least one sub-process and/or according to an ambient situation.