In Concatenative Synthesis, what factor was directly dependent on the quality of the final voice output achieved by stitching segments?
Answer
The size and quality of the recorded database of speech segments.
The success of concatenative synthesis hinged entirely on the material it was built from. Since this method worked by joining pre-recorded units—phonemes, diphones, or larger chunks—the acoustic characteristics embedded within those recorded segments directly determined the resulting voice quality. A larger database provided more options for smooth transitions and better handling of varying sound contexts. Conversely, if the database was small or contained recordings with poor acoustic quality, the resulting synthesized speech would suffer, as the system was merely assembling existing human sounds rather than generating new ones based on abstract rules or models.

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