To the existing problems of the flexible segmentation algorithm proposed by Wang Yongzhong

et al.

in this paper

we make some improvements

and apply the new improved algorithm to automatic speech voiced-unvoiced segmentation.A great deal of numerical simulations and practical data processing show that this new algorithm assuredly solves several problems of the binary-based segment algorithm and the segment algorithm proposed by Wang Yongzhong

and achieves adapted effective segmentation for speech signal.The criterion of distinguishing voiced from unvoiced speech segments proposed by Wesfreid

et al.is adopted

and the new improved algorithm is also applied to automatic speech voiced-unvoiced segmentation.It not only obtains ideal segmentation result

but also there are not much more redundancy segmentations.