Hearing assistance suitability determining device and hearing assistance suitability determining method

A hearing assistance suitability determining device comprising:

• a processor;
• and
• a non-transitory memory storing thereon a program which is executed by the processor the program causes the processor to:
• receive hearing ability information indicating hearing levels of a subject for respective frequencies;
• determine at least one of hearing ability types that corresponds to the hearing ability information, based on a tendency in a change of the hearing levels with respect to the frequencies derived from the received hearing ability information and first predetermined correspondence relationship between each of frequency tendencies and each of the hearing ability types;
• determine a suitability of the subject for dichotic hearing assistance based on the determined hearing ability type and corresponding second predetermined correspondence relationship, the second predetermined correspondence relationship indicating, for each of the hearing ability types, amounts of clarity improvement each indicating a degree by which a clarity of each of the speech sounds perceived by the subject is improved by the dichotic hearing assistance, the speech sounds including vowels, consonants and a combination of the vowels and the consonants;
• and
• present the determined suitability,
• wherein the suitability is determined based on the amounts of clarity improvement corresponding to the determined hearing ability type.