Statistical parametric speech synthesis

H Zen, K Tokuda, AW Black - speech communication, 2009 - Elsevier
This review gives a general overview of techniques used in statistical parametric speech
synthesis. One instance of these techniques, called hidden Markov model (HMM)-based …

Cellulolytic systems in insects

H Watanabe, G Tokuda - Annual review of entomology, 2010 - annualreviews.org
Despite the presence of many carbohydrolytic activities in insects, their cellulolytic
mechanisms are poorly understood. Whereas cellulase genes are absent from the genomes of …

Ionicity in ionic liquids: correlation with ionic structure and physicochemical properties

K Ueno, H Tokuda, M Watanabe - Physical Chemistry Chemical …, 2010 - pubs.rsc.org
Ionic liquids (ILs) are ambient temperature molten salts that have attracted considerable
attention because of their negligible volatility, thermal stability, nonflammability, and high ionic …

Physicochemical properties and structures of room temperature ionic liquids. 2. Variation of alkyl chain length in imidazolium cation

H Tokuda, K Hayamizu, K Ishii… - The Journal of …, 2005 - ACS Publications
The alkyl chain length of 1-alkyl-3-methylimidazolium bis(trifluoromethane sulfonyl)imide ([Rmim][(CF
3 SO 2 ) 2 N], R = methyl (m), ethyl (e), butyl (b), hexyl (C 6 ), and octyl (C 8 )) was …

Physicochemical properties and structures of room temperature ionic liquids. 1. Variation of anionic species

H Tokuda, K Hayamizu, K Ishii… - The Journal of …, 2004 - ACS Publications
Room-temperature ionic liquids (RTILs) based on 1-butyl-3-methylimidazolium ([bmim]) with
a variety of fluorinated anions were prepared, and the thermal behavior, density, viscosity, …

Speech parameter generation algorithms for HMM-based speech synthesis

K Tokuda, T Yoshimura, T Masuko… - … on acoustics, speech …, 2000 - ieeexplore.ieee.org
This paper derives a speech parameter generation algorithm for HMM-based speech synthesis,
in which the speech parameter sequence is generated from HMMs whose observation …

How ionic are room-temperature ionic liquids? An indicator of the physicochemical properties

H Tokuda, S Tsuzuki, MABH Susan… - The Journal of …, 2006 - ACS Publications
Room-temperature ionic liquids (RTILs) are liquids consisting entirely of ions, and their important
properties, eg, negligible vapor pressure, are considered to result from the ionic nature. …

Voice conversion based on maximum-likelihood estimation of spectral parameter trajectory

T Toda, AW Black, K Tokuda - IEEE Transactions on Audio …, 2007 - ieeexplore.ieee.org
In this paper, we describe a novel spectral conversion method for voice conversion (VC). A
Gaussian mixture model (GMM) of the joint probability density of source and target features is …

[PDF][PDF] Simultaneous modeling of spectrum, pitch and duration in HMM-based speech synthesis

T Yoshimura, K Tokuda, T Masuko… - … conference on speech …, 1999 - sp.nitech.ac.jp
In this paper, we describe an HMM-based speech synthesis system in which spectrum, pitch
and state duration are modeled simultaneously in a unified framework of HMM. In the system…

Coherent two-dimensional lasing action in surface-emitting laser with triangular-lattice photonic crystal structure

M Imada, S Noda, A Chutinan, T Tokuda… - Applied physics …, 1999 - pubs.aip.org
Lasing action of a surface-emitting laser with a two-dimensional photonic crystal structure is
investigated. The photonic crystal has a triangular-lattice structure composed of InP and air …