Patent ID: 9234923
Filing Date: 2016-01-12
CPC Classification: G01R

Claim Text:
1. A signal processing device comprising: signal processing means that includes a processing parameter setting unit, performs a predetermined process for an input signal on the basis of a processing parameter set by the processing parameter setting unit, and outputs a graph display signal for displaying a graph in which a horizontal axis is a frequency and a vertical axis is an amplitude level; display means for receiving the graph display signal output from the signal processing means and displaying the graph on a display screen; a parameter data table that stores the processing parameter set; control means for reading at least one processing parameter from the parameter data table and outputting the processing parameter to the processing parameter setting unit; and a touch panel that is provided so as to correspond to the display screen and includes a touch sensor which outputs positional information associated with a touch operation, wherein the parameter data table stores a plurality of the processing parameters with different resolutions corresponding to each positional information item, the control means includes a processing parameter output unit that reads the processing parameters with different resolutions corresponding to the positional information from the parameter data table and outputs the processing parameters to the processing parameter setting unit, if the positional information is input from the touch panel, and the processing parameter output unit of the control means reads at least one change value as the processing parameter corresponding to the positional information from the parameter data table and outputs the change value to the processing parameter setting unit such that the change value is increased or decreased with respect to a currently set value in correspondence with a slide touch direction included in the positional information.