| 摘要 |
It is an object of the present invention to provide a peak suppressing device and a peak suppressing method which optimally suppress peaks without causing insufficient suppression or excessive suppression even when input signals exceeding a threshold continue for a long period of time. A peak suppressing device (10) according to the present invention includes: a subtracting unit (11) that subtracts a predetermined threshold from an amplitude value of an input signal and generates a first peak signal; a multiplying unit (12) that multiplies the first peak signal by a weight coefficient and generates a second peak signal; a band limiting filter (13) that limits a band of the second peak signal by using a filter including a plurality of tap coefficients, and generates a third peak signal; a subtracting unit (14) that subtracts the third peak signal from the input signal; and a weight coefficient generating unit (15) that generates the weight coefficient based on a value, the value being an amplitude value of the first peak signal divided by an amplitude value of a fourth peak signal generated when a convolution arithmetic operation is performed on by using at least a tap coefficient used in a center tap of the band limiting filter (13) and tap coefficients used as taps before and after the center tap. |
