한국음향학회:학술대회논문집 (Proceedings of the Acoustical Society of Korea Conference)
- 한국음향학회 2000년도 학술발표대회 논문집 제19권 2호
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- Pages.197-200
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- 2000
Dyadic Wavelet Transform 방식의 Pitch 주기결정
A Stable Pitch ]Determination via Dyadic Wavelet Transform (DyWT)
- Kim Namhoon (Dept. of Electronics Engineering, Korea University) ;
- Yoon Gibum (Dept. of Electronics Engineering, Korea University) ;
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Ko Hanseok
(Dept. of Electronics Engineering, Korea University)
- 발행 : 2000.11.01
초록
This paper presents a time-based Pitch Determination Algorithm (PDA) for reliable estimation of pitch Period (PP) in speech signal. In proposed method, we use the Dyadic Wavelet Transform (DyWT), which detects the presence of Glottal Closure Instants (GCI) and uses the information to determine the pitch period. And, the proposed method also uses the periodicity property of DyWT to detect unsteady GCI. To evaluate the performance of the proposed methods, that of other PDAs based on DyWT are compared with what this paper proposed. The effectiveness of the proposed method is tested with real speech signals containing a transition between voiced and the unvoiced interval where the energy of voiced signal is unsteady. The result shows that the proposed method provides a good performance in estimating the both the unsteady GCI positions as well as the steady parts.
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