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FREQUENCY CHARACTERISTIC DETERMINATION DEVICE

[Category : - Music]
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PROBLEM TO BE SOLVED: To provide a frequency characteristic determination device capable of preventing generation of a frequency characteristic curve in an unnatural form.SOLUTION: A CPU 11 of a tablet terminal 1 executes a frequency characteristic decision program 21 and sets a pass point Pthrough which a frequency characteristic curve of an audio signal should pass, and a pass point Pof a frequency Xhigher than a frequency Xof the pass point P. The CPU 11 decides a direction point aof a Bezier curve Cconnecting the pass points P, Pon the basis of the pass points P, P. The CPU 11 determines whether a frequency Xof the direction point ais included within a reference range equal to or higher than the frequency Xand equal to or lower than the frequency X. When the frequency Xis out of the reference range, the CPU 11 moves the direction point ain such a manner that the frequency Xis included within the reference range. The Bezier curve Cis generated on the basis of the pass points P, Pand the direction point a. The CPU 11 changes the frequency characteristic curve in accordance with the Bezier curve C.

Patent publications:

JP 5590111

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onkyo (Japan)

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