Abstract
In previous studies, it has been considered that the pitch frequency included in vocal cord characteristics, the duration and the amplitude contribute to emotion which is conveyed to listeners. But it is reported that the hearing test of synthetic voice which is generated by changing these parameters is conducted and that, as the results, emotion of “joy” could not be sufficiently expressed. Accordingly, vocal tract characteristics in “joy” and that in “surprise” were derived to investigate parameters which contribute the judgement of emotion of “joy”. As the result, the first and the second formants in “joy” were larger than those in “surprise” and the third formant in “joy” was smaller than that in “surprise”. Synthetic voice was, then, generated by changing these parameters, and hearing experiment was conducted. As the result, it was found that these parameters were used in judgement of emotion of “joy”.
