Unit selection: how waveform generation is achieved through selection and concatenation of waveform segments, the data required to do this, and the limitations of this approach.
The method
It seems simple: choose a suitable sequence of pre-recorded speech segments, and play them back in the right order. But how do we make that choice, and can we really just play back a sequence of waveform fragments taken from different utterances?
The database
The quality of a unit selection system depends very much on the speech database, both the quality of the recorded speech and the accuracy of the labels.
This is the new version. Still under construction.