Sound detection equipment and sound detection method

The sound sensing device is a sound sensing device mounted on a mobile body, a sound detector for detecting the ambient sound of the moving body, the first frequency band that is set in advance in the detected ambient sound by the sound detection unit and the sound pressure information, based on the correlation degree between the sound pressure information of a second frequency band different first frequency band and the frequency of the detected ambient sound by the sound detection portion, of the sound source to be detected in the vicinity of the mobile present, and a determination unit for determining at least one of withdrawal from approaching, or mobile to mobile.