Tomoki TODA


Non-Native Text-to-Speech Preserving Speaker Individuality Based on Partial Correction of Prosodic and Phonetic Characteristics
Yuji OSHIMA Shinnosuke TAKAMICHI Tomoki TODA Graham NEUBIG Sakriani SAKTI Satoshi NAKAMURA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2016/12/01
Vol. E99-D  No. 12  pp. 3132-3139
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
cross-lingual speech synthesisEnglish-Read-by-Japanesespeaker individualityHMM-based speech synthesisprosody correctionphonetic correction
 Summary | Full Text:PDF(1.2MB)

Improvements of Voice Timbre Control Based on Perceived Age in Singing Voice Conversion
Kazuhiro KOBAYASHI Tomoki TODA Tomoyasu NAKANO Masataka GOTO Satoshi NAKAMURA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2016/11/01
Vol. E99-D  No. 11  pp. 2767-2777
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
statistical singing voice conversionperceived agegender-dependent modelingdirect waveform modificationunsupervised adaptation
 Summary | Full Text:PDF(2.2MB)

A Statistical Sample-Based Approach to GMM-Based Voice Conversion Using Tied-Covariance Acoustic Models
Shinnosuke TAKAMICHI Tomoki TODA Graham NEUBIG Sakriani SAKTI Satoshi NAKAMURA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2016/10/01
Vol. E99-D  No. 10  pp. 2490-2498
Type of Manuscript:  Special Section PAPER (Special Section on Recent Advances in Machine Learning for Spoken Language Processing)
Category: Voice conversion
Keyword: 
GMM-based voice conversionsample-based speech synthesisspeech parameter conversionrich context model
 Summary | Full Text:PDF(846.3KB)

Enhancing Event-Related Potentials Based on Maximum a Posteriori Estimation with a Spatial Correlation Prior
Hayato MAKI Tomoki TODA Sakriani SAKTI Graham NEUBIG Satoshi NAKAMURA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2016/06/01
Vol. E99-D  No. 6  pp. 1437-1446
Type of Manuscript:  Special Section PAPER (Special Section on Human Cognition and Behavioral Science and Technology)
Category: 
Keyword: 
electroencephalogram (EEG)event-related potential (ERP)generative modelindependent component analysis (ICA)Wiener filternoise removalWishart distributionspatial correlation prior
 Summary | Full Text:PDF(1MB)

NOCOA+: Multimodal Computer-Based Training for Social and Communication Skills
Hiroki TANAKA Sakriani SAKTI Graham NEUBIG Tomoki TODA Satoshi NAKAMURA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2015/08/01
Vol. E98-D  No. 8  pp. 1536-1544
Type of Manuscript:  PAPER
Category: Educational Technology
Keyword: 
computer-based trainingmultimodalitynon-verbal behaviorscontext information
 Summary | Full Text:PDF(726.4KB)

A Hybrid Approach to Electrolaryngeal Speech Enhancement Based on Noise Reduction and Statistical Excitation Generation
Kou TANAKA Tomoki TODA Graham NEUBIG Sakriani SAKTI Satoshi NAKAMURA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2014/06/01
Vol. E97-D  No. 6  pp. 1429-1437
Type of Manuscript:  Special Section PAPER (Special Section on Advances in Modeling for Real-world Speech Information Processing and its Application)
Category: Voice Conversion and Speech Enhancement
Keyword: 
speaking-aidelectrolaryngeal speechspectral subtractionvoice conversionhybrid approach
 Summary | Full Text:PDF(1.3MB)

Utilizing Human-to-Human Conversation Examples for a Multi Domain Chat-Oriented Dialog System
Lasguido NIO Sakriani SAKTI Graham NEUBIG Tomoki TODA Satoshi NAKAMURA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2014/06/01
Vol. E97-D  No. 6  pp. 1497-1505
Type of Manuscript:  Special Section PAPER (Special Section on Advances in Modeling for Real-world Speech Information Processing and its Application)
Category: Dialog System
Keyword: 
dialog corporaresponse generationexample-based dialog modelingsemantic similaritycosine similaritymachine translation
 Summary | Full Text:PDF(806.8KB)

Structured Adaptive Regularization of Weight Vectors for a Robust Grapheme-to-Phoneme Conversion Model
Keigo KUBO Sakriani SAKTI Graham NEUBIG Tomoki TODA Satoshi NAKAMURA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2014/06/01
Vol. E97-D  No. 6  pp. 1468-1476
Type of Manuscript:  Special Section PAPER (Special Section on Advances in Modeling for Real-world Speech Information Processing and its Application)
Category: Speech Synthesis and Related Topics
Keyword: 
g2p conversionout-of-vocabulary wordonline discriminative trainingstructured learningAROW
 Summary | Full Text:PDF(420.4KB)

Voice Timbre Control Based on Perceived Age in Singing Voice Conversion
Kazuhiro KOBAYASHI Tomoki TODA Hironori DOI Tomoyasu NAKANO Masataka GOTO Graham NEUBIG Sakriani SAKTI Satoshi NAKAMURA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2014/06/01
Vol. E97-D  No. 6  pp. 1419-1428
Type of Manuscript:  Special Section PAPER (Special Section on Advances in Modeling for Real-world Speech Information Processing and its Application)
Category: Voice Conversion and Speech Enhancement
Keyword: 
singing voicevoice conversionperceived agespectral and prosodic featuressubjective evaluations
 Summary | Full Text:PDF(1MB)

Esophageal Speech Enhancement Based on Statistical Voice Conversion with Gaussian Mixture Models
Hironori DOI Keigo NAKAMURA Tomoki TODA Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2010/09/01
Vol. E93-D  No. 9  pp. 2472-2482
Type of Manuscript:  Special Section PAPER (Special Section on Processing Natural Speech Variability for Improved Verbal Human-Computer Interaction)
Category: Voice Conversion
Keyword: 
laryngectomeesesophageal speechspeech enhancementvoice conversioneigenvoice conversion
 Summary | Full Text:PDF(848KB)

Improvements of the One-to-Many Eigenvoice Conversion System
Yamato OHTANI Tomoki TODA Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2010/09/01
Vol. E93-D  No. 9  pp. 2491-2499
Type of Manuscript:  Special Section PAPER (Special Section on Processing Natural Speech Variability for Improved Verbal Human-Computer Interaction)
Category: Voice Conversion
Keyword: 
speech synthesiseigenvoice conversionSTRAIGHT mixed excitationglobal varianceadaptive training
 Summary | Full Text:PDF(1.1MB)

Evaluation of Extremely Small Sound Source Signals Used in Speaking-Aid System with Statistical Voice Conversion
Keigo NAKAMURA Tomoki TODA Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2010/07/01
Vol. E93-D  No. 7  pp. 1909-1917
Type of Manuscript:  PAPER
Category: Rehabilitation Engineering and Assistive Technology
Keyword: 
laryngectomeespeaking aidelectrolarynxvoice conversionNAMenhancing auditory feedback
 Summary | Full Text:PDF(536.9KB)

Adaptive Training for Voice Conversion Based on Eigenvoices
Yamato OHTANI Tomoki TODA Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2010/06/01
Vol. E93-D  No. 6  pp. 1589-1598
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
speech synthesisvoice conversionGaussian mixture modeleigenvoiceadaptive training
 Summary | Full Text:PDF(437.3KB)

The Nitech-NAIST HMM-Based Speech Synthesis System for the Blizzard Challenge 2006
Heiga ZEN Tomoki TODA Keiichi TOKUDA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2008/06/01
Vol. E91-D  No. 6  pp. 1764-1773
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
statistical parametric speech synthesisBlizzard Challenge 2006MGC-LSPMLLTfull covariance GV pdf
 Summary | Full Text:PDF(1.4MB)

Cost Reduction of Acoustic Modeling for Real-Environment Applications Using Unsupervised and Selective Training
Tobias CINCAREK Tomoki TODA Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2008/03/01
Vol. E91-D  No. 3  pp. 499-507
Type of Manuscript:  Special Section PAPER (Special Section on Robust Speech Processing in Realistic Environments)
Category: Acoustic Modeling
Keyword: 
ASR applicationreal-environmenttask-dependencyunsupervised trainingselective training
 Summary | Full Text:PDF(795.2KB)

Building an Effective Speech Corpus by Utilizing Statistical Multidimensional Scaling Method
Goshu NAGINO Makoto SHOZAKAI Tomoki TODA Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2008/03/01
Vol. E91-D  No. 3  pp. 607-614
Type of Manuscript:  Special Section PAPER (Special Section on Robust Speech Processing in Realistic Environments)
Category: Corpus
Keyword: 
speech corpuscost effectivespeaker selectionacoustic modelstatistical MDS method
 Summary | Full Text:PDF(377.9KB)

A Speech Parameter Generation Algorithm Considering Global Variance for HMM-Based Speech Synthesis
Tomoki TODA Keiichi TOKUDA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2007/05/01
Vol. E90-D  No. 5  pp. 816-824
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
HMM-based speech synthesisspeech parameter generationmaximum likelihood criterionover-smoothing effectglobal variance
 Summary | Full Text:PDF(1.2MB)

Reducing Computation Time of the Rapid Unsupervised Speaker Adaptation Based on HMM-Sufficient Statistics
Randy GOMEZ Tomoki TODA Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2007/02/01
Vol. E90-D  No. 2  pp. 554-561
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
HMM-sufficient statisticsunsupervisedrapid adaptationspeech recognition
 Summary | Full Text:PDF(1.5MB)

Details of the Nitech HMM-Based Speech Synthesis System for the Blizzard Challenge 2005
Heiga ZEN Tomoki TODA Masaru NAKAMURA Keiichi TOKUDA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2007/01/01
Vol. E90-D  No. 1  pp. 325-333
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
HMM-based speech synthesisBlizzard Challenge 2005STRAIGHTHSMMGV
 Summary | Full Text:PDF(700KB)

Improving Rapid Unsupervised Speaker Adaptation Based on HMM-Sufficient Statistics in Noisy Environments Using Multi-Template Models
Randy GOMEZ Akinobu LEE Tomoki TODA Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2006/03/01
Vol. E89-D  No. 3  pp. 998-1005
Type of Manuscript:  Special Section PAPER (Special Section on Statistical Modeling for Speech Processing)
Category: Speech Recognition
Keyword: 
HMM-Sufficient Statisticsunsupervisedspeaker adaptationnoisy environments
 Summary | Full Text:PDF(940.5KB)

Utterance-Based Selective Training for the Automatic Creation of Task-Dependent Acoustic Models
Tobias CINCAREK Tomoki TODA Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2006/03/01
Vol. E89-D  No. 3  pp. 962-969
Type of Manuscript:  Special Section PAPER (Special Section on Statistical Modeling for Speech Processing)
Category: Speech Recognition
Keyword: 
acoustic modelingtask-dependencydevelopment costsselective trainingsufficient statistics
 Summary | Full Text:PDF(623.9KB)

Designing Target Cost Function Based on Prosody of Speech Database
Kazuki ADACHI Tomoki TODA Hiromichi KAWANAMI Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2005/03/01
Vol. E88-D  No. 3  pp. 519-524
Type of Manuscript:  Special Section PAPER (Special Section on Corpus-Based Speech Technologies)
Category: Speech Synthesis and Prosody
Keyword: 
unit selection speech synthesisspeech databaseprosody modificationSTRAIGHTperceptual evaluation
 Summary | Full Text:PDF(614.1KB)