基于MMSE準(zhǔn)則的基頻模型
Study on Fundamental Frequency Model Based on MMSE Principle
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摘要: 在聲調(diào)與語調(diào)相互作用理論的基礎(chǔ)上，該文利用最小均方誤差準(zhǔn)則有效地提取了連續(xù)語流基頻曲線的高音線及低音線，從量化的角度證實(shí)了高音線及低音線對連續(xù)語流基頻曲線的作用及其區(qū)別。該文還對聲調(diào)與語調(diào)相互作用的數(shù)學(xué)模型做了初步探討，建立了基頻曲線的雙線調(diào)節(jié)及調(diào)中值模型，為合成系統(tǒng)基頻靈活有效地調(diào)整提供了新的手段，提高了語音合成系統(tǒng)的自然度。
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關(guān)鍵詞:
- 語音信號處理; 基頻模型; 高音線; 低音線; 最小均方誤差準(zhǔn)則
Abstract: Based on the interaction of tone and intonation, a new method is proposed to get the top line and the bottom line for continuous speech of mandarin, using the Minimum Mean Square Error (MMSE) principle. The research results demonstrate that the top line and the bottom line have different function to the intonation of continuous speech on the part of quantum. The paper also proposes a primary mathematical model to figure the interaction between the tone and intonation. On the basis of the extraction of two lines and the primary model, the two-lines model and the median fundamental frequency model are established separately, which provides a flexible and effective method to modify the intonation and improves the naturalness of speech synthesis system of mandarin greatly. -
Kochansaki Greg, Shih Chilin. Prosody modeling with soft templates[J].Speech Communication.2003, 39(3-4):311-352[2]Fujisaki Hiroya. The fundamental frequency contour of speech－Its modeling, underlying mechanisms, and application to multilingual speech synthesis. In Proceedings of ICSP99，Seoul Korea，1999：19-26.[3]趙元任. 漢語的字調(diào)跟語調(diào). 趙元任語言學(xué)論文集, 上海: 商[4]務(wù)印書館，2002：734-749.[5]沈炯. 北京話聲調(diào)的音域和語調(diào). 北京語音實(shí)驗(yàn)錄, 北京: 北京大學(xué)出版社，1985：73-130.[6]Xu Y, Wang Q E. What can tone studies tell us about intonation? In A. Botinis, et al. (Eds.) Intonation: Theory, Models and Applications, In Proceedings of an ESCA Workshop, European Speech Communication Association, Athens, Greece, 1997：337-340.[7]王安紅, 陳明, 呂士楠. 基于言語數(shù)據(jù)庫的漢語音高下傾現(xiàn)象研究. 聲學(xué)學(xué)報，2004，29(4)：353-358.[8]王蓓，呂士楠，楊玉芳. 漢語語句中重讀音節(jié)音高變化模式研究. 聲學(xué)學(xué)報，2002，27(3)：234-240.[9]楊順安. 濁聲源動態(tài)特性對合成音質(zhì)的影響. 中國語文，1986, 3：173-181. -
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