1. An automatic speech segmentation and verification method comprising: a retrieving step, for retrieving a recorded speech corpus, the recorded speech corpus corresponding to a known text script, the known text script defining phonetic information with N phonetic units; a segmenting step, for segmenting the recorded speech corpus into N test speech unit segments referring to the phonetic information of the N phonetic units in the known text script; a segment-confidence-measure verifying step, for verifying segment confidence measures of N cutting points of the test speech unit segments to determine if the N cutting points of the test speech unit segments are correct; a phonetic-confidence-measure verifying step, for verifying phonetic confidence measures of the test speech unit segments to determine if the test speech unit segments correspond to the known text script; and a determining step, for determining acceptance of the phonetic unit by comparing a combination of segment reliability and the phonetic confidence measures of the test speech unit segments to a predetermined threshold value; wherein if the combined confidence measure is greater than the predetermined threshold value, the phonetic is accepted.