Active Contours Model for Image Segmentation: A Review
Huimin Lu, Yujie Li, Yingying Wang, Seiichi Serikawa, Bolong Chen, Chen Chang · 2013
Speech recognition system is infiltrated widely in our daily life. However, speech recognition rate for elderly speech are lower than that for non-elderly speech. Therefore, in this paper, we analyzed elderly speech so that recognition rate for elderly people becomes higher. In previous work, we undertook to find out whether major subjective characteristics for elderly speech are “rough”, “slow speaking”, and “non-briskness”. Furthermore, each subjective characteristics have an acoustic characteristics corresponded. In those experiments, on medial phoneme, elderly speech was analyzed. However, a medial phoneme haves an influence on coarticulation. Therefore, in this paper, on initial phoneme which has only a slight influence on coarticulation, we investigate relationship between subjective characteristics and acoustic characteristics for elderly people. In the result, aging influence on initial phoneme is shown. For instance, duration of initial phonemes is getting longer at the steady-state phonemes. Power spectrum lifts in high frequency band of a voiced sound. And Cepstrum distance decreased.