9. The speech recognition apparatus according to claim 8 comprising a cluster storing means in which a feature vector is to be classified, a membership degree calculating means for calculating a membership degree of each vector of the vector series to the each cluster and calculating a membership degree vector having a membership degree of the vector to each cluster as an element, a reference pattern storing means expressing a recognition unit to be compared similarly by a membership degree vector series and a matching means for matching an input pattern comprising the membership degree vector series provided as an output of the membership degree calculating means with the reference pattern, wherein as a result of the matching a similarity degree or a distance of the input pattern and the reference pattern is calculated.
9. The speech recognition apparatus according to claim 8 comprising a cluster storing means in which a feature vector is to be classified, a membership degree calculating means for calculating a membership degree of each vector of the vector series to the each cluster and calculating a membership degree vector having a membership degree of the vector to each cluster as an element, a reference pattern storing means expressing a recognition unit to be compared similarly by a membership degree vector series and a matching means for matching an input pattern comprising the membership degree vector series provided as an output of the membership degree calculating means with the reference pattern, wherein as a result of the matching a similarity degree or a distance of the input pattern and the reference pattern is calculated. 10. The speech recognition apparatus according to claim 9, further comprising a similarity degree calculating means for calculating the distance or the similarity degree of corresponding similarity degree vectors by linearly or nonlinearly expanding or contracting a time axis of either of the input pattern and the reference pattern or time axes of both thereby aligning the time axes of the both patterns and an accumulation simliarity degree calculating means for calculating the distance or the similarity degree along the time axis of either of the input pattern and the reference pattern or the time axes of both, wherein the accumulation value is rendered the distance or the similarity degree of the input pattern and the reference pattern.