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Statistical approach to vocal tract transfer function estimation based on factor analyzed trajectory hmm.
| Content Provider | CiteSeerX |
|---|---|
| Author | Toda, Tomoki Tokuda, Keiichi |
| Abstract | In this paper, we describe a novel statistical approach to the vocal tract transfer function (VTTF) estimation of a speech signal based on a factor analyzed trajectory hidden Markov model (HMM). Because speech is a quasi-periodic signal, there are many missing frequency components between adjacent F0 harmonics. The proposed method determines a time-varying VTTF sequence based on the maximum a posteriori (MAP) estimation considering not only harmonic components observed at each analyzed frame but also those at other frames for stochastically interpolating the missing frequency parts. Index Terms — speech analysis, vocal tract transfer function, factor analysis, trajectory HMM, MAP 1. |
| File Format | |
| Access Restriction | Open |
| Content Type | Text |