Method for the environment-dependent operation of a hearing system and hearing system

A method for an environment-dependent operation of a hearing system (1), which comprises the steps of:

• performing a training phase, which comprises the substeps of:
• determining values for a first plurality of environmental data of a first user of the hearing system each time for a plurality of survey times;
• using the values of the environmental data for each of the survey times to form respectively a feature vector in an at least four-dimensional feature space;
• mapping each of the feature vectors respectively onto a corresponding representative vector in a maximum three-dimensional representation space;
• using a spatial distribution of a subgroup of representative vectors to define a first region in the maximum three-dimensional representation space for a first environmental situation of the hearing system;
• specifying at least one value of a setting for a signal processing of the hearing system for the first environmental situation;
• performing an application phase, which comprises the substeps of:
• determining at an application time values for the first plurality of environmental data of the first user or of a second user of the hearing system in the application phase;
• using the values of the environmental data to form a corresponding feature vector for the application time;
• using the first region of the maximum three-dimensional representation space and the feature vector for the application time to identify a presence of the first environmental situation, and the at least one value of the signal processing of the hearing system is set according to its specification for the first environmental situation;
• and
• operating the hearing system with the at least one value set in this way.