Parameter Selection Method, Parameter Selection Apparatus, and Non-Transitory Computer-Readable Storage Medium

A parameter selection apparatus comprising:

• a processor;
• and
• a memory storing instructions that, when executed by the processor, cause the processor to:
• receive a first sound signal having a first frequency characteristic;
• apply a filter to the first sound signal to generate a second sound signal having a modified frequency characteristic;
• calculate first acoustic feature quantities of the first sound signal;
• calculate second acoustic feature quantities of the second sound signal;
• and
• determine parameters of the filter such that a difference, in a specific acoustic feature quantity associated with auditory sensation, between the first and second acoustic feature quantities is equal to or less than a prescribed threshold.

A non-transitory computer-readable storage medium storing a parameter selection program executable by at least one processor of an information processing device to cause the at least one processor to execute a method comprising:

• selecting parameters of a filter configured to take a first sound signal having a frequency characteristic to output a second sound signal having a transformed version of the frequency characteristic, the selecting comprising:
• calculating first acoustic feature quantities for the first sound signal;
• calculating second acoustic feature quantities for the second sound signal;
• and
• determining the parameters of the filter such that a difference in a given acoustic feature quantity related to an auditory sensation between the first acoustic feature quantities and the second acoustic feature quantities is no more than a predetermined value.