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* History [#af7558b8] #contents ** 2015 [#j9bcc490] > ''December 25, 2015'' >> HTS version 2.3 was released.~ Its new features are - HERest: -- Add VBLR adaptation. - HMGenS: -- Add DAEM-based parameter generation. -- Support DP search to determine state duration when the model alignments are given. - HInit, HRest, HRest: -- Support parallel mode. - HHEd: -- Speed up context-clustering by calculating differences between answers to current and previous questions. -- Add untying weights function in HHEd. - Demo scripts: -- Add modulation spectrum-based postfilter. -- Support text files instead of utt files for general English database. -- Turn off spectrum normalization in STRAIGHT. -- Add LSP postfilter. -- Support mel-cepstrum based aperiodic measure generated by STRAIGHT. -- Support new HTS voice format for hts engine API. -- Integrate normal demo and STRAIGHT demo. ** 2014 [#w71b4b73] > ''December 25, 2014'' >> HTS version 2.3 beta was released to the hts-users ML members. ** 2013 [#sca5a2a6] > ''May 1, 2013'' >> A tutorial about HMM-based speech synthesis was published on Proceedings of the IEEE: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6495700 ** 2012 [#k2361095] > ''December 25, 2012'' >> HTS version 2.3 alpha was released to the hts-users ML members. ** 2011 [#j9420e9d] > ''July 7, 2011'' >> HTS version 2.2 was released.~ Its new features are - HERest: -- Support DAEM algorithm in parameter estimation step. - HHEd: -- Support KLD-based state-mapping and cross-lingual speaker adaptation. -- Context-clustering can be started in the middle of the tree building. - HMgeTool: -- Add ECD-based MGE traning command, HMgeTool. - HSMMAlign: -- Add stand-alone HSMM based forced-alignment command, HSMMAlign. - Demo scripts: -- Change sampling frequency from 16kHz to 48kHz. -- Support bark critical-band based aperiodic measure. -- Change speaker and singer of Brazilian Portuguese and Japanese song demo, respectively. - Slides: -- Release slides as a tutorial of HMM-based speech synthesis. > ''March 3, 2011'' >> HTS version 2.2 beta was released to the hts-users ML members. ** 2010 [#tde9d64b] > ''December 25, 2010'' >> HTS version 2.2 alpha was released to the hts-users ML members. > ''May 14, 2010'' >> HTS version 2.1.1 was was released.~ Its new features are - Based on HTK-3.4.1 - Many bug fixes - HFst: -- WFST converter for forced-alignment of HSMM - HMGenS: -- Initial GV weight for parameter generation -- Model-level alignments given from label of singing voice to determine note-level durations - HHEd: -- Memory reduction options for context-clustering - Demo scripts -- Context-dependent GV without silent and pause phoneme -- Demo using the Nitech Japanese database for singing voice synthesis ** 2009 [#f3d6c52f] > ''December 25, 2009'' >> HTS version 2.1.1 beta was released to the hts-users ML members. > ''August 27, 2009'' >> The first HTS meeting in [[Interspeech 2009:http://www.interspeech2009.org/conference/]]. > ''May 22, 2009'' >> HTS-Demo for Brazilian Portuguese is released. > ''March 16, 2009'' >> Prof. Keiichi Tokuda & Dr. Heiga Zen have a [[tutorial about HMM-based speech synthesis>Tutorial]] at [[Interspeech 2009:http://www.interspeech2009.org/conference/]]. ** 2008 [#qd958615] > ''July 31, 2008'' >> hts_engine website moved to http://hts-engine.sourceforge.net/~ hts_engine API version 1.01 and Flite+hts_engine version 0.90 were released. > ''July 14, 2008'' >> [[Keiichiro Oura:http://www.sp.nitech.ac.jp/~uratec/]] took over the maintainer of HTS from [[Heiga Zen:http://www.sp.nitech.ac.jp/~zen/]]. > ''June 27, 2008'' >> HTS version 2.1 and hts_engine API version 1.0 were released.~ Their new features are - HTS-2.1 -- Many bug fixes -- Released under the New and Simplified BSD license -- Simple documentation -- 64-bit compile support -- MAXSTRLEN (max length of strings), SMAX (max # of streams), and PAT_LEN (max length of patterns) can be set through configure script like ./configure MAXSTRLEN=1024 SMAX=20 -- HFB: --- HSMM training and adaptation -- HAdapt: --- SMAPLR/CSMAPLR adaptation -- HGen: --- Speech parameter generation algorithm considering GV --- Random generation of state transitions, state durations, and mixture components (by configuration variable RNDFLAGS) -- HMGenS: --- Speech parameter generation from HSMMs -- HHEd: --- Add DM command to delete existing macros --- Add IT command to impose pre-built trees in clustering --- Add JM command to merge difference models on state or stream levels --- MU command supports '*2' style mixing up --- MU command supports mixture-level occcupancy threshhold in mixing up (by configuration variable MINMIXOCC) - hts_engine API-1.0: -- Released under the New and Simplified BSD license -- Support LSP-type parameters including LSP, mel-LSP, and MGC-LSP -- Speech parameter generation algorithm considering GV > ''June 13, 2008'' >> HTS version 2.1RC2 and hts_engine API version 0.99 were released to the hts-users ML members. > ''May 27, 2008'' >> HTS voice building tools for the MARY platform was released with [[DFKI MARY 3.6.0:http://mary.dfki.de/Download/mary-3-6-0-released]]. > ''March 24, 2008'' >> HTS version 2.1RC1 and hts_engine API version 0.96 were released to the hts-users ML members. > ''January 15, 2008'' >> HTS version 2.1beta and hts_engine_API version 0.95 were released to the hts-users ML members. ** 2007 [#afa4796d] > ''December 7, 2007'' >> hts_engine was ported to Java and included in [[DFKI MARY 3.5:http://mary.dfki.de/Download/mary-3-5-0-released]]. > ''November 1, 2007'' >> HTS version 2.1alpha was released to the hts-users ML members > ''October 1, 2007'' >> HTS version 2.0.1 and hts_engine_API version 0.9 were released.~ The new features are - Many bug fixes. - Band structure for linear transforms. - Stream-dependent variance flooring scales. - State duration model mmf structure is changed. In the previous versions we used a multi-variate Gaussian PDF to represent state duration PDFs of an HMM. However, from this version we use multi-stream structure. This is very important for the future HSMM support. - Demo scripts support LSP-type parameters for spectral representation in addition to cepstral ones. - API-style implementation of hts_engine. Old stand-alone hts_engine will be thrown away. > ''September 20, 2007'' >> HTS version 2.0.1RC1 was released to the hts-users ML members. > ''September 18, 2007'' >> HTS version 2.0.1RC1 was released to the internal working group members. > ''March 20, 2007'' >> Mail address of hts-users ML changed to hts-users@sp.nitech.ac.jp > ''March 7, 2007'' >> HTS website moved to http://hts.sp.nitech.ac.jp/ ** 2006 [#z5d7dda6] >''December 29, 2006'' >> HTS version 2.0 was '''finally''' released :-)~ The new features are - Based on [[HTK-3.4>http://htk.eng.cam.ac.uk/download.shtml]]. - Compilation without [[SPTK>http://www.sp.nitech.ac.jp/~tokuda/SPTK/index.html]]. - The [[license of HTS>License]] was slightly modified. - Support gcc4. - Thousands of fixed bugs. - HRest can generate state duration densities (-g option). - Model boundaries can be given to HERest (-e option).~ We may specify a part of model boundaries (e.g, pause positions). - Reduced-memory implementation of context clustering in HHEd (-r option). - Each decision tree can have a name with regular expression (-p option).~ TB 000 {(*-a+*, *-i+*, *-u+*).state[2]} TB 000 {(*-sil+*, *-pau+*).state[3]} As a result, different two trees can be constructed for consonants and vowels, respectively. - The interface of HMGenS has been switched from ''HHEd-style'' to ''HERest-style''. - Flexible model structures in HMGenS (in the previous version, the first stream is assumed as mcep, and the others are assumed as log F0). Non-left-to-right models and full covariance matrices for state output pdfs can also be used. - EM-based parameter generation algorithm (-c option), i.e, mixture of Gaussians can be used. -- -c 0: Cholesky decomposition -- -c 1: EM (with fixed state sequence) -- -c 2: EM (phone boundaries can be given with -e option) - Random generation algorithm is also supported (set config. variable RNDPG = TRUE). - Speaker adaptation, adaptive training, and semi-tied covariance transforms are supported for multi-stream HMMs/MSD-HMMs. -- MLLRMEAN, MLLRCOV, and CMLLR-based adaptation. -- CMLLR-based adaptive training. -- Decision trees for context clustering can be used to define regression classes for adaptation. -- HMGenS can read MLLRMEAN, MLLRCOV, CMLLR, and SEMIT transforms for adaptation. - MAP adaptation is also supported. - Performance improvements in hts_engine. - Miscellaneous changes. >''December 4, 2006'' >> HTS version 2.0RC3 was released to members of Mailing List. >''July 1, 2006'' >> HTS version 2.0RC2 was released to members of Mailing List. >''March 3, 2006'' >> HTS version 2.0RC1 was released to members of Mailing List. >''February 15, 2006'' >> HTS version 2.0RC0 was released to the internal working group. ** 2003 [#ld26312a] >''December 26, 2003'' >> HTS version 1.1.1 was released. The new features were - Based on HTK-3.2.1 - Demo script for ARCTIC database - Demo script for an original database (Japanese) - Variance flooring in demo script - Postfiltering in hts-engine - Many fixed bugs >''Oct. 14, 2003'' >> New HTS voices trained by ARCTIC databases were released. >''June 11, 2003'' >> HTS version 1.1b was released. >''May 9, 2003'' >> HTS version 1.1 was released. The new features were - A small synthesis engine (to be called from Festival). - HMM file format converter for the engine. - Many fixed bugs (Thanks for reporting them). - Accompanied by HTS voices for Festival. >''January 21, 2003'' >> Minor revision was made to HTS version 1.0. ** 2002 [#s0e2a8a8] >''December 25, 2002'' >> HTS version 1.0 was released. //>''September:'' //>> The first paper about eigenvoice for HMM-based speech synthesis was //appeared in ICSLP'02. // //** 1999 [#v67c04e5] //> ''September:'' //>> The first paper about the current HTS framework was appeared in //Eurospeech'99. //> ''March:'' //>> The first paper about MSD-HMM was appeared in ICASSP'99. // //** 1998 [#v760e959] //> ''November:'' //>> The first paper about speaker adaptation for the HMM-based speech synthesis //using MLLR was appeared in ESCA/COCOSDA workshop on speech synthesis. // //** 1997 [#v95967aa] //> ''September:'' //>> The first paper about speaker interpolation for the HMM-based speech //synthesis was appeared in Eurospeech'97. // ** 1995 [#v5285cba] > ''May 9, 1995'' >> The first paper about the speech parameter generation algorithm was appeared in ICASSP'95.
