Influence of a voice on the quality of synthesized speech
Florian Hinterleitner, Christiana Manolaina, Sebastian Möller · 2014
In this study we focus on the influence of the voice of a speech corpus on the quality of text-to-speech (TTS) systems. Therefore, we selected a set of attribute scales which consists of items related to the 5 perceptual quality dimensions of TTS systems and of items which are used in studies concerning the likeability of voices. We selected 5 different voices of the TTS systems IVONA and ACAPELA and evaluated them in a listening test. A subsequent factor analysis revealed 4 factors. The first two factors consist of items related to the 5 perceptual quality dimensions whereas factor 3 and 4 are related to items which are used for likeability assessment. In a statistical analysis we could prove a significant effect of the voice of a speech corpus on the overall impression as well as on the factors 1, 2, and 4.