Sixth International Conference on Spoken Language Processing
October 16-20, 2000
A New Tone Conversion Method for Mandarin by an Adaptive Linear Prediction Analysis
Congxiu Wang, Qihu Li, Guoying Zhao, Li Yin, Shuai Hao, Da Meng
Institute of Acoustics, Academia Sinica, Beijing, China
Conventional frame-based linear prediction
coding(LPC) does not always de-convovle the
speech signal into the vocal tract response and the
voice source excitation signal exactly. In order to get
better results, an adaptive linear prediction coding
analysis(ALPC) method is proposed in this paper.
The vocal tract responses obtained from ALPC
analysis are used to synthesize a vowel syllable that
has a different tone. During the synthesizing
procedure, the voice source excitations are
superseded by the improved LF-4 model, and the
pitch-synchronized synthesizing method is used.
The hearing experiments indicate that the
synthesized speech by ALPC analysis, which has a
different tone from the original one, has a high
intelligibility and a better voice quality than that by
the traditional LPC analysis method.
Wang, Congxiu / Li, Qihu / Zhao, Guoying / Yin, Li / Hao, Shuai / Meng, Da (2000):
"A new tone conversion method for Mandarin by an adaptive linear prediction analysis",
In ICSLP-2000, vol.2, 1088-1091.