| 摘要 |
PROBLEM TO BE SOLVED: To provide a device capable of correcting audibility objectively with good reproducibility.SOLUTION: An audibility correction device includes: a sound source 18 which outputs reference voice signals of a plurality of frequencies in order; an amplifier 14 which amplifies the reference voice signals; a loudspeaker 16 which outputs the reference voice signals amplified by the amplifier 14; an information input device 24 through which a user can input a timing of change from a state in which a reference voice cannot be heard to a state in which the signal changes can be heard or from the state in which the reference voice signal can be heard to the state in which the reference voice signal cannot be heard for each of the plurality of frequencies; and a CPU 22 which stores the gain of the amplifier 14 in the timing input through the information input device 24 for each of the plurality of frequencies, and corrects predetermined ideal frequency characteristics on the basis of the stored gain. A programmable equalizer 12 is so adjusted as to obtain the corrected ideal frequency characteristics. |
