| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a signal process device that enables a simple operation to detect a signal level exceeding over a threshold value.SOLUTION: In a signal process device 1, a touch sensor 32 detects a touch position in an image display screen of an image display part 31 by a user, an information acquisition part 41 acquires a fundamental frequency and a threshold value of a signal level, a first search part 42 searches for whether the signal level exceeds over the threshold from the fundamental frequency to an upper limit frequency, and a second search part 43 searches for whether the signal level exceeds over the threshold from a lower limit frequency to the fundamental frequency. During searching for the signal level, a frequency change-over display part 44 displays a graph image of the signal level on an image display part 31 with a frequency upon searching as a center frequency, and a first search stoppage part 45 stops searching for the signal level when the signal level exceeding over the threshold value is detected between the fundamental frequency and the upper limit frequency or between the lower limit frequency and the fundamental frequency.</p> |
