The purpose of this study is to make software of equipment that detects siren sound of ambulance and to program it on a microcontroller in the equipment. By using two times FFT (Fast Fourier Transform) on detecting, the characteristics of the siren sound could be converted into numerical values. Siren sound was detected properly even under the Doppler effect. The proposed method could detect the siren sound in which S/N ratio is approximately 0 dB.

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Co-activation of visual and emotional information by mental imagery Hiroki MOTOYAMA, Takuya MIYAZAKI, and Shinsuke HISHITANI (Hokkaido University)Is emotional information co-activated with visual information when generating mental images? An a#ective priming paradigm was used to experimentally investigate this question. An a#ective priming e#ect was observed in a lexical-decision task that was conducted after image generation for the prime noun in a picture-imagery condition, where the participants visualized the prime noun referent, although attention was only directed to the visual aspects of imagery processes. However, the e#ect was not observed in a letter-imagery condition where the participants visualized the spelling of the prime noun. These findings suggest that the generation of picture images usually involves the activation of both emotional information and visual information, and that the emotional information evoked by picture images is di#erent from that evoked in word recognition.