| 主权项 |
1. A signal processing device comprising:
a frequency analyzer configured to convert a sensor signal which is outputted from a sensor for receiving a wireless signal reflected by an object and depends on motion of the object, into a frequency domain signal, and extract, by use of a group of individual filter banks with different frequency bands, signals of the individual filter banks from the frequency domain signal; a recognizer configured to perform a recognition process of detecting the object based on at least one of a frequency distribution based on the signals of the individual filter banks and a component ratio of signal intensities based on the signals of the individual filter banks; a level setter configured to set a sensitivity level indicative of a degree of detection sensitivity of the object for the recognition process; a parameter adjuster configured to change a parameter for adjusting the detection sensitivity of the object for the recognition process, the parameter adjuster being configured to set the parameter to increase the detection sensitivity of the object when the sensitivity level set by the level setter is a high level, and being configured to set the parameter to decrease the detection sensitivity of the object when the sensitivity level set by the level setter is a low level. |
