Approaching vehicle detection using linear microphone array
Kenji Kodera, Akitoshi Itai, Hiroshi Yasukawa · 2008
Due to recent trends in society, enhanced car safety is strongly required. To prevent traffic accidents, it is necessary to detect the direction of approaching vehicles in T-intersection accurately and rapidly. This paper describes a scheme that uses a linear microphone array with four microphones to estimate the approaching vehicles. We employ a cross-correlation method to realize sound source localization and propose a direction estimation scheme based on the weighted sum of interpolated cross-correlation. Trials show that the proposed scheme offers good performance.