| Speech interaction brings great convenience to our life,but there are some problems in speech synthesis,such as dull voice,lack of emotion,and a certain gap with human pronunciation,which lead to the voice interaction experience need to be improved.Interesting voice interaction can reduce the user's boredom in the process of communication,improving interactive experience is an important link in the development of voice interaction technology.This paper proposes a method to enhance the interesting and interactive experience of voice from the perspective of fundamental frequency of voice,and applies and verifies the proposed method.The article first describes the phenomenon of using statement label designator in daily life,the widely used statement label designators "ba","ma","a" and "ha" are selected as the research objects,the role of these statement label designators in the end of sentences is discussed.Then,the subjectivity of statement label designators is analyzed.It is believed that the statement label designators at the end of sentences have the function of influencing the speaker's emotional expression,and the role of special pronunciation in these statement label designators is studied.Taking the phenomenon of special pronunciation in daily life as an example,the fundamental frequency characteristics of special pronunciation are extracted and studied,the relationship between the fundamental frequency of special pronunciation and time is analyzed.A method for synthesizing special pronunciation sentences is proposed: based on the high and level tone pronunciation of the statement label designators at the end of the sentence,the fundamental frequency of high and level tone pronunciation is modified and applied to the sentence to generate the speech with special pronunciation by using the basic frequency characteristics of the special pronunciation as the template.The special pronunciation was applied to the synthetic speech conversation process,compared with the EEG analysis results of the experiment without special pronunciation dialogue,it was found that the difference of alpha-band power between the left and right frontal lobes of the brain in special pronunciation conversation was increased,the power of the left hemisphere was lower than that of the right hemisphere,the subjective measurement result is consistent with the EEG result,it is believed that special pronunciation make users have happy emotions and acquire a good conversational experience.In order to explore the listener's subjective understanding of the emotional expression of the special pronounced statement label designator,based on the real person's pronunciation,emotional sentences containing the special pronunciation statement label designator are synthesized,the results of the comparative experiments of emotional recognition show that the special pronunciation can weaken the speaker's four basic emotional expression effects,among which the degree of the weakening of happy emotion is lower,and in the non-happy emotional sentences,it can strengthen the expression of happy emotion.The special pronunciation in the effect of listening makes the listener produce a kind of cognitive contrast and pleasant emotion.The article finally verified the previous experimental results through actual cases.The research results provide a reference for improving the fun of speech interaction.This article hopes to design speech from a fundamental frequency perspective and develop a voice interactive product with a better user experience. |
