The Research Of Speech Synthesis Naturalness Based On Computer

Along with society's unceasing progress, the people in have already obtained the very many research results about the pronunciation processing aspect research, the speech synthesis understandability already has met the quite high requirements in particular, but still had certain disparity in the pronunciation nature aspect with people's anticipated request, this will be serious affects the speech synthesis technology the further development.The this article main research in the speech synthesis foundation, the improvement method which proposed in view of the present speech synthesis nature not high question, this article take the self-transcribing pronunciation storehouse speech synthesis as the example, and carries on the subjective and objective using the profile splicing method to the pronunciation nature enhancement the contrast improvement. The primary coverage is as follows:1)Embarks from the phonetics basic essential factor, the analysis speech synthesis basic essential factor, studies some influence speech synthesis nature related question, and analyzes the speech synthesis and the speech recognition and so on the relations.2)for the unit manufacture speech corpora syllables, and through the silent period of speech, eliminate the influence of speech signal connection problem, and a long pause out synthesized speech unnecessary parts, when using the stitching algorithm waveform and FD-PSOLA, TD-PSOLA method for voice - the duration and frequency adjustment, which is more close to the rhythm control in pronunciation, and use natural voice and image sound prosodic parameter comparison to see speech synthesis and the gap between the sound and the nature, and then analyzes the voice of degree of improvement of natural.3)Finally this article has carried on the simulation experiment to the speech synthesis nature system, had certain enhancement after the system simulation in the pronunciation nature, and carried on the evaluation using the subjective and objective method to the synthesis result, the effect has been extremely ideal. This article research has provided the very good foundation and the plan for the speech synthesis nature further research.