Patent ID: 9154894
Filing Date: 2015-10-06
Classification: H04R

Abstract:
1. A frequency characteristics determination device comprising: a setting section for setting a first pass point through which a frequency response curve of an audio signal should pass, and a second pass point whose frequency is higher than a frequency of the first pass point; a determination section for determining one or more direction points of a Bezier curve connecting the set first and second pass points based on the set first and second pass points; a range determination section for determining whether frequencies of the one or more direction points determined by the determination section are within a range between not less than the frequency of the first pass point and not more than the frequency of the second pass point; a moving section for moving the one or more direction points so that frequencies of the direction points are within the range when the determination is made that the frequencies of the direction points are out of the range; a generation section for generating a Bezier curve based on the one or more direction points and the first and second pass points; and a changing section for changing the frequency response curve of the audio signal according to the Bezier curve generated by the generation section.