7. A system comprising: a processor; and a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising: receiving speech data; detecting a missing segment in the speech data; generating a plurality of substitute segments for the missing segment; evaluating, according to a duration model which is based on a mean and a variance of duration for individual context-dependent phoneme acoustic models associated with the plurality of hypothetical segments, the plurality of substitute segments according to a context of speech determined from the speech data and a duration of the missing segment to identify a possible segment that represents the missing segment of the speech data to yield an identified segment; and inserting the identified segment into the speech data to replace the missing segment.
7. A system comprising: a processor; and a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising: receiving speech data; detecting a missing segment in the speech data; generating a plurality of substitute segments for the missing segment; evaluating, according to a duration model which is based on a mean and a variance of duration for individual context-dependent phoneme acoustic models associated with the plurality of hypothetical segments, the plurality of substitute segments according to a context of speech determined from the speech data and a duration of the missing segment to identify a possible segment that represents the missing segment of the speech data to yield an identified segment; and inserting the identified segment into the speech data to replace the missing segment. 8. The system of claim 7 , wherein the evaluating of the plurality of substitute segments is further based on an acoustic feature of the speech data.