%/* ----------------------------------------------------------- */
%/*                                                             */
%/*                          ___                                */
%/*                       |_| | |_/   SPEECH                    */
%/*                       | | | | \   RECOGNITION               */
%/*                       =========   SOFTWARE                  */ 
%/*                                                             */
%/*                                                             */
%/* ----------------------------------------------------------- */
%/* developed at:                                               */
%/*                                                             */
%/*      Speech Vision and Robotics group                       */
%/*      Cambridge University Engineering Department            */
%/*      http://svr-www.eng.cam.ac.uk/                          */
%/*                                                             */
%/*      Entropic Cambridge Research Laboratory                 */
%/*      (now part of Microsoft)                                */
%/*                                                             */
%/* ----------------------------------------------------------- */
%/*         Copyright: Microsoft Corporation                    */
%/*          1995-2000 Redmond, Washington USA                  */
%/*                    http://www.microsoft.com                 */
%/*                                                             */
%/*          2001-2002 Cambridge University                     */
%/*                    Engineering Department                   */
%/*                                                             */
%/*   Use of this software is governed by a License Agreement   */
%/*    ** See the file License for the Conditions of Use  **    */
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%/*                                                             */
%/* ----------------------------------------------------------- */
%
% HTKBook - Dave Ollason and Steve Young 11/11/95
%
% Language modelling details added by Gareth Moore 15-16/01/02

\mychap{Configuration Variables}{confvars}

\index{configuration variables!summary}
This chapter tabulates all configuration variables used in \HTK.

\mysect{Configuration Variables used in Library Modules}{coninlib}

%\begin{table}[h]
\begin{center}
\tablecaption{Library Module Configuration Variables}
\tablehead{\hline
Module & Name & Default & Description  \\ \hline\hline}
\tabletail{\hline}
\begin{supertabular}{|p{1.8cm}|l|l|p{6.6cm}|}

% all
  & \texttt{TRACE} & \texttt{0} & Trace setting\\ \hline

% HParm HWave
\htool{HParm} & \texttt{SOURCEFORMAT} & \texttt{HTK}
  & File format of source \\ \cline{2-4}
\htool{HWave} & \texttt{TARGETFORMAT} & \texttt{HTK} & File format of target \\ \hline

% HLabel HAudio HWave HParm
\htool{HLabel} \htool{HAudio} \htool{HWave} \htool{HParm} 
  & \texttt{SOURCERATE} & \texttt{0.0} & Sample rate of source in 100ns units \\ \hline

% HParm
\htool{HParm} \htool{HWave} 
  & \texttt{TARGETRATE} & \texttt{0.0} & Sample rate of target in 100ns units \\ \hline

% HAudio
  & \texttt{LINEOUT} & \texttt{T}   & Enable audio output to machine line output \\ \cline{2-4}
  & \texttt{PHONESOUT} & \texttt{T} & Enable audio output to machine phones output \\ \cline{2-4}
\htool{HAudio}
  & \texttt{SPEAKEROUT} & \texttt{F}& Enable audio output to machine internal speaker \\ \cline{2-4}
  & \texttt{LINEIN} & \texttt{T} & Enable audio input from machine line input \\ \cline{2-4}
  & \texttt{MICIN}  & \texttt{F} & Enable audio input from machine mic input \\ \hline

% HWave
  & \texttt{NSAMPLES} &  & Num samples in alien file input via a pipe\\ \cline{2-4}
\htool{HWave} & \texttt{HEADERSIZE}  &   & Size of header in an alien file\\ \cline{2-4}
  & \texttt{BYTEORDER} &   & Define byte order \texttt{VAX} or other\\ \cline{2-4}
  & \texttt{STEREOMODE} &   & Select channel: \texttt{RIGHT} or \texttt{LEFT} \\ \hline

% HParm
  & \texttt{SOURCEKIND} & \texttt{ANON} & Parameter kind of source \\ \cline{2-4}
  & \texttt{TARGETKIND} & \texttt{ANON} & Parameter kind of target \\ \cline{2-4}
  & \texttt{MATTRANFN } &  & Input transformation file  \\ \cline{2-4}
  & \texttt{SAVECOMPRESSED} & \texttt{F} & Save the output file in compressed form \\ \cline{2-4}
  & \texttt{SAVEWITHCRC} & \texttt{T} & Attach a checksum to output parameter file \\ \cline{2-4}
\htool{HParm}  
  & \texttt{ADDDITHER} & \texttt{0.0} & Level of noise added to input signal \\ \cline{2-4} 
  & \texttt{ZMEANSOURCE} & \texttt{F} & Zero mean source waveform before analysis \\ \cline{2-4}
  & \texttt{WINDOWSIZE} & \texttt{256000.0} & Analysis window size in 100ns units \\ \cline{2-4}
  & \texttt{USEHAMMING} & \texttt{T} & Use a Hamming window \\ \cline{2-4}
  & \texttt{DOUBLEFFT} & \texttt{F} & Use twice the required size for FFT \\ \cline{2-4}
  & \texttt{PREEMCOEF} & \texttt{0.97} & Set pre-emphasis coefficient \\ \cline{2-4}
  & \texttt{LPCORDER} &  \texttt{12} &  Order of lpc analysis \\ \cline{2-4}
  & \texttt{NUMCHANS} & \texttt{20} & Number of filterbank channels \\ \cline{2-4}
  & \texttt{LOFREQ} & \texttt{-1.0} & Low frequency cut-off in fbank analysis \\ \cline{2-4}
  & \texttt{HIFREQ}  & \texttt{-1.0} & High frequency cut-off in fbank analysis \\  \cline{2-4}
  & \texttt{WARPFREQ} & \texttt{1.0} & Frequency warping factor \\ \cline{2-4}
  & \texttt{WARPLCUTOFF} &  & Lower frequency threshold for non-linear warping  \\ \cline{2-4}
  & \texttt{CMEANDIR} &  & Directory to find cepstral mean vecotrs  \\ \cline{2-4}
  & \texttt{CMEANMASK} &  & Filename mask for cepstral mean vectors  \\ \cline{2-4}
  & \texttt{CMEANPATHMASK} &  & Path name mask for cepstral mean vectors, the matched string is used to extend CMEANDIR string \\ \cline{2-4}
  & \texttt{VARSCALEDIR} &  & Directory to find cepstral variance vectors  \\ \cline{2-4}
  & \texttt{VARSCALEMASK} &  & Filename mask for cepstral variance vectors  \\ \cline{2-4}
  & \texttt{VARSCALEPATHMASK} &  & Path name mask for cepstral variance vectors, the matched string is used to extend VARSCALEDIR string\\ \cline{2-4}
  & \texttt{VARSCALEFN} &  & Filename of global variance scaling vector \\ \cline{2-4}
  & \texttt{COMPRESSFACT} & 0.33 & Amplitude compression factor for PLP \\ \hline

% HLabel HParm
\htool{HLabel}  \htool{HParm} 
  & \texttt{V1COMPAT} & \texttt{F} & HTK V1 compatibility setting \\ \hline

%\end{tabular}
%\end{center}
%\caption{Library Module Configuration Variables}
%\end{table}
%\clearpage

%\begin{table}[h]
%\begin{center}
%\begin{tabular}{|p{1.4cm}|p{3.0cm}|p{1.1cm}|p{6.6cm}|} \hline
%Module & Name & Default & Description  \\ \hline\hline

% HWave HShell
\htool{HWave} 
  & \texttt{NATURALREADORDER} & \texttt{F} & Enable natural read order for binary files \\ \cline{2-4} 
\htool{HShell} 
  & \texttt{NATURALWRITEORDER} & \texttt{F} & Enable natural write order for binary files \\ \hline

% HParm
  & \texttt{USEPOWER}  & \texttt{F} & Use power not magnitude in fbank analysis \\ \cline{2-4}
  & \texttt{NUMCEPS}   & \texttt{12} & Number of cepstral parameters \\  \cline{2-4}
  & \texttt{CEPLIFTER} &   \texttt{22} & Cepstral liftering coefficient \\ \cline{2-4}
  & \texttt{ENORMALISE} & \texttt{T} & Normalise log energy \\  \cline{2-4}
  & \texttt{ESCALE} & \texttt{0.1} & Scale log energy \\  \cline{2-4} 
  & \texttt{SILFLOOR} & \texttt{50.0} & Energy silence floor in dBs \\  \cline{2-4} 
  & \texttt{DELTAWINDOW} & \texttt{2} & Delta window size \\ \cline{2-4} 
  & \texttt{ACCWINDOW} & \texttt{2} & Acceleration window size \\ \cline{2-4} 
  & \texttt{VQTABLE} & \texttt{NULL} & Name of VQ table \\  \cline{2-4}
  & \texttt{SIMPLEDIFFS} & \texttt{F} & Use simple differences for delta calculations \\ \cline{2-4}
  & \texttt{RAWENERGY}  & \texttt{T} & Use raw energy \\ \cline{2-4}
  & \texttt{AUDIOSIG} & \texttt{0} & Audio signal number for remote control \\ \cline{2-4}
  & \texttt{USESILDET}  & \texttt{F} & Enable speech/silence detector \\ \cline{2-4}
  & \texttt{MEASURESIL} & \texttt{T} & Measure background silence level \\ \cline{2-4}
\htool{HParm} 
  & \texttt{OUTSILWARN} & \texttt{T} & Print a warning message to {\tt stdout} before 
measuring audio levels \\ \cline{2-4}
  & \texttt{SPEECHTHRESH} & \texttt{9.0} & Threshold for speech above silence level (in dB) \\ \cline{2-4}
  & \texttt{SILENERGY}    & \texttt{0.0} & Average background noise level (in dB) - will 
normally be measured rather than supplied in configuration \\ \cline{2-4}
  & \texttt{SPCSEQCOUNT}  & \texttt{10} & Window over which speech/silence decision reached \\ \cline{2-4}
  & \texttt{SPCGLCHCOUNT} & \texttt{0} & Maximum number of frames marked as silence in window which is
  classified as speech whilst expecting start of speech \\ \cline{2-4}  
  & \texttt{SILSEQCOUNT}  & \texttt{100} & Number of frames classified as silence needed to mark end of
  utterance \\ \cline{2-4}
  & \texttt{SILGLCHCOUNT} & \texttt{2} & Maximum number of frames marked as silence in window which is
  classified as speech whilst expecting silence \\ \cline{2-4}  
  & \texttt{SILMARGIN} & \texttt{40} & Number of extra frames included before and after start and end of
  speech marks from the speech/silence detector \\ \hline

% HLabel
  & \texttt{STRIPTRIPHONES} & \texttt{F} & Enable triphone stripping \\ \cline{2-4}
  & \texttt{TRANSALT} & \texttt{0} & Filter all but specified label alternative \\ \cline{2-4}
\htool{HLabel} 
  & \texttt{TRANSLEV} & \texttt{0} & Filter all but specified label level \\ \cline{2-4}
  & \texttt{LABELSQUOTE} & \texttt{NULL} & Select method for quoting in label files \\ \cline{2-4}
  & \texttt{SOURCELABEL} & \texttt{HTK} & Source label format \\ \cline{2-4}
  & \texttt{TARGETLABEL} & \texttt{HTK} & Target label format \\ \hline

%\end{tabular}
%\end{center}
%\caption{Library Module Configuration Variables (cont)}
%\end{table}

%\begin{table}[h]
%\begin{center}
%\begin{tabular}{|p{1.4cm}|p{2.6cm}|p{1.5cm}|p{6.6cm}|} \hline
%Module & Name & Default & Description  \\ \hline\hline

% HMem
\htool{HMem} & \texttt{PROTECTSTAKS} & \texttt{F} & Enable stack protection \\ \hline


% HModel
  & \texttt{CHKHMMDEFS} & \texttt{T} & Check consistency of HMM defs \\ \cline{2-4}
  & \texttt{SAVEBINARY} & \texttt{F} & Save HMM defs in binary format \\ \cline{2-4}
  & \texttt{KEEPDISTINCT} & \texttt{F} & Keep orphan HMMs in distinct files \\ \cline{2-4}
  & \texttt{SAVEGLOBOPTS} & \texttt{T} & Save \hmmt{o} with HMM defs \\ \cline{2-4}
  & \texttt{SAVEREGTREE} & \texttt{F} & Save \hmmt{r} macros with HMM defs \\ \cline{2-4}
\htool{HModel} 
    & \texttt{SAVEBASECLASS} & \texttt{F} & Save \hmmt{b} macros with HMM defs \\ \cline{2-4}
  & \texttt{SAVEINPUTXFORM} & \texttt{T} & Save \hmmt{i} macros with HMM defs \\ \cline{2-4}
  & \texttt{ORPHANMACFILE} & \texttt{NULL} & Last resort file for new macros \\ \cline{2-4}
  & \texttt{HMMSETKIND} & \texttt{NULL} & Kind of HMM Set \\ \cline{2-4}
  & \texttt{ALLOWOTHERHMMS} & \texttt{T} & Allow MMFs to contain HMM definitions which are 
  not listed in the HMM List \\ \cline{2-4}
  & \texttt{DISCRETELZERO}  & \texttt{F} & Map DLOGZERO to LZERO in output probability 
  calculations \\ \hline

% HNet
  & \texttt{FORCECXTEXP} & \texttt{F} & Force triphone context expansion to get 
  model names (is overridden by \texttt{ALLOWCXTEXP}) \\ \cline{2-4}
  & \texttt{FORCELEFTBI} & \texttt{F} & Force left biphone
  context expansion to get model names ie. don't try triphone names \\ \cline{2-4}
  & \texttt{FORCERIGHTBI} & \texttt{F} & Force right biphone
  context expansion to get model names ie. don't try triphone names \\ \cline{2-4}
\htool{HNet} 
  & \texttt{ALLOWCXTEXP}  & \texttt{T} & Allow context expansion to get model names \\ \cline{2-4}
  & \texttt{ALLOWXWRDEXP} & \texttt{F} & Allow context expansion across words \\ \cline{2-4}
  & \texttt{FACTORLM}     & \texttt{F} & Factor language model likelihoods throughout words rather 
  than applying all at transition into word. This can increase accuracy when pruning is tight and 
  language model likelihoods are relatively high. \\ \cline{2-4} 
  & \texttt{CFWORDBOUNDARY} & \texttt{T} & In word-internal triphone systems, context-free 
  phones will be treated as word boundaries \\ \hline

% HRec
\htool{HRec}
  & \texttt{FORCEOUT} & \texttt{F} & Forces the most likely partial hypothesis to be used as
  the recognition result even when no token reaches the end of the network by the last frame
  of the utterance \\ \hline

% HShell
  & \texttt{ABORTONERR} & \texttt{F} & Causes HError to abort rather than exit \\ \cline{2-4}
\htool{HShell} & \texttt{NONUMESCAPES} & \texttt{F} & Prevent writing in \verb+012+ format \\ \cline{2-4}
  & \texttt{MAXTRYOPEN} & \texttt{1} & Maximum number of
  attempts which will be made to open the same file \\ \cline{2-4}
  & \texttt{EXTENDFILENAMES} & \texttt{T} & Support for extended
  filenames \\ \hline


% HTrain
  & \texttt{MAXCLUSTITER} & \texttt{10} & Maximum number
  of cluster iterations \\ \cline{2-4}
\htool{HTrain} & \texttt{MINCLUSTSIZE} & \texttt{3} & Minimum number
  of elements in any one cluster \\ \cline{2-4}
  & \texttt{BINARYACCFORMAT} & \texttt{T} & Save
  accumulator files in binary format \\ \hline

% HFB
\htool{HFB} & \texttt{HSKIPSTART} & \texttt{-1} & Start of skip over region (debugging only) \\ \cline{2-4}
  & \texttt{HSKIPEND} & \texttt{-1} & End of skip over region (debugging only) \\ \hline

% HFBLat

  & \texttt{MINFORPROB} & \texttt{10.0} & Mixture prunning threshold \\ \cline{2-4}
  & \texttt{PROBSCALE} & \texttt{1.0} & Scaling factor for the state acoustic and language model probabilities \\ \cline{2-4}
  & \texttt{LANGPROBSCALE} & \texttt{1.0} & Additional scaling factor for language model probabilities \\ \cline{2-4}
  & \texttt{LATPROBSCALE} & \texttt{1.0} & Scaling factor for the lattice-arc and language model probabilities \\ \cline{2-4}
  & \texttt{PHNINSPEN} & \texttt{0.0} & Insertion penalty for each phone \\ \cline{2-4}
\htool{HFBLat}   & \texttt{NOSILENCE} & \texttt{F} & Ignore silence from reference transcription when using \emph{non-exact} MPE \\ \cline{2-4}
  & \texttt{QUINPHONE} & \texttt{F} & Support quinphone model. Only available if compiled with the \texttt{SUPPORT\_QUINPHONE} directive \\ \cline{2-4}
  & \texttt{EXACTCORRECTNESS} & \texttt{F} & Do \emph{exact} version of MPE/MWE \\ \cline{2-4}
  & \texttt{PHONEMEE} & \texttt{T} & Set to \texttt{TRUE} for MPE or MWE \\ \cline{2-4}
  & \texttt{CALCASERROR} & \texttt{F} &  \\ \cline{2-4}
  & \texttt{MWE} & \texttt{F} & Set to \texttt{TRUE} for MWE training \\ \cline{2-4}
  & \texttt{MEECONTEXT} & \texttt{F} & Use context when calculating accuracies \\ \cline{2-4}
  & \texttt{USECONTEXT} & \texttt{F} & Same as \texttt{MEECONTEXT} \\ \cline{2-4}
  & \texttt{INSCORRECTNESS} & \texttt{-1} & Correctness of an inserted phone \\ \cline{2-4}
  & \texttt{PDE} & \texttt{F} & Use partial distance elimination \\ \hline

% HAdapt
  & \texttt{USEBIAS} & \texttt{F} & Specify a bias with linear transforms \\ \cline{2-4}
  & \texttt{SPLITTHRESH} & \texttt{1000.0} & Minimum occupancy to generate a transform \\ \cline{2-4}
  & \texttt{TRANSKIND} & \texttt{{\tt MLLRMEAN}} & Transformation kind \\ \cline{2-4}
  & \texttt{ADAPTKIND} & \texttt{{\tt BASE}} & Use regression tree or base classes \\ \cline{2-4}
  & \texttt{BLOCKSIZE} & \texttt{full} & Block structure of transform\\ \cline{2-4}
  & \texttt{BASECLASS} & \texttt{global} & Macroname of baseclass\\ \cline{2-4}
  & \texttt{REGTREE} & \texttt{} & Macroname of regression tree\\ \cline{2-4}
 \htool{HAdapt}  & \texttt{MAXXFORMITER} & \texttt{10} & Maximum iterations for iteratively estimated transforms \\ \cline{2-4}
  & \texttt{MLLRDIAGCOV} & \texttt{F} & Generate a diagonal variance transform with MLLR mean transform \\ \cline{2-4}
  & \texttt{SAVESPKRMODELS} & \texttt{F} & Store the adapted model set in addition to the transforms \\ \cline{2-4}
  & \texttt{KEEPXFORMDISTINCT} & \texttt{T} & Save transforms separate files rather than a TMF \\ \cline{2-4}
  & \texttt{MAXSEMITIEDITER} & \texttt{10} & Maximum iterations of model/transform updates for semitied systems \\ \cline{2-4}
  & \texttt{SEMITIEDMACRO} & \texttt{SEMITIED} & Macroname for the semitied transform\\ \cline{2-4}
  & \texttt{INITNUISANCEFR} & \texttt{T} & Initiliase nuisance dimensions using Fisher ratios\\ \cline{2-4}
  & \texttt{NUMNUISANCEDIM} & 0 & Number of dimensions to remove using HLDA\\ \hline



% HMap
  & \texttt{MAPTAU} & \texttt{10} & $\tau$ for use with MAP estimation \\ \cline{2-4}
  & \texttt{MINEGS} & \texttt{0} & Minimum observations to update state \\ \cline{2-4}
 \htool{HMap} & \texttt{MINVAR} & 0 & minimum variance floor value \\ \cline{2-4}
  & \texttt{MIXWEIGHTFLOOR} & 0 & MINMIX times this value is the prior floor \\ \hline

 & \texttt{HWAVEFILTER}    & & Filter for waveform file input\\ \cline{2-4}
 & \texttt{HPARMFILTER}    & & Filter for parameter file input\\ \cline{2-4}
 & \texttt{HLANGMODFILTER} & & Filter for language model file input\\ \cline{2-4}
 & \texttt{HMMLISTFILTER}  & & Filter for HMM list file input\\ \cline{2-4}
 & \texttt{HMMDEFFILTER}   & & Filter for HMM definition file input\\ \cline{2-4}
 & \texttt{HLABELFILTER}   & & Filter for Label file input\\ \cline{2-4}
 & \texttt{HNETFILTER}     & & Filter for Network file input\\ \cline{2-4}
 & \texttt{HDICTFILTER}    & & Filter for Dictionary file input \\  \cline{2-4}
 & \texttt{LGRAMFILTER}    & & Filter for gram file input\\ \cline{2-4}
 & \texttt{LWMAPFILTER}    & & Filter for word map file input\\ \cline{2-4}
\htool{HShell} & \texttt{LCMAPFILTER}    & &  Filter for class map file input\\ \cline{2-4}
 & \texttt{LMTEXTFILTER}   & & Filter for text file input\\ \cline{2-4}
 & \texttt{HWAVEOFILTER}   & & Filter for waveform file output\\ \cline{2-4}
 & \texttt{HPARMOFILTER}   & & Filter for parameter file output\\ \cline{2-4}
 & \texttt{HLANGMODOFILTER}& & Filter for language model file output\\ \cline{2-4}
 & \texttt{HMMLISTOFILTER} & & Filter for HMM list file output\\ \cline{2-4}
 & \texttt{HMMDEFOFILTER}  & & Filter for HMM definition file output\\ \cline{2-4}
 & \texttt{HLABELOFILTER}  & & Filter for Label file output\\ \cline{2-4}
 & \texttt{HNETOFILTER}    & & Filter for Network file output\\ \cline{2-4}
 & \texttt{HDICTOFILTER}   & & Filter for Dictionary file output \\  \cline{2-4}
 & \texttt{LGRAMOFILTER}   & & Filter for gram file output\\ \cline{2-4}
 & \texttt{LWMAPOFILTER}   & & Filter for word map file output\\ \cline{2-4}
 & \texttt{LCMAPOFILTER}   & & Filter for class map file
output\\
\hline
\htool{LModel} & \texttt{RAWMITFORMAT}& \texttt{F}  & Disable \HTK\ escaping for LM tools\\ \cline{2-4}
               & \texttt{USEINTID}  & \texttt{F}    & Use 4 byte ID fields to save binary models \\
\hline

               & \texttt{INWMAPRAW}  & \texttt{F}   & Disable \HTK\ escaping for input word lists and maps \\ \cline{2-4}
\htool{LWMap}  & \texttt{OUTWMAPRAW} & \texttt{F}   & Disable \HTK\ escaping for output word lists and maps \\ \cline{2-4}
               & \texttt{STARTWORD}  & {\tt <s>}    & Set sentence start symbol\\ \cline{2-4}
               & \texttt{ENDWORD}    & {\tt </s>}   & Set sentence end symbol\\
\hline

               & \texttt{INCMAPRAW}  & \texttt{F}   & Disable \HTK\ escaping for input class lists and maps \\ \cline{2-4}
\htool{LCMap}  & \texttt{OUTCMAPRAW} & \texttt{F}   & Disable \HTK\ escaping for output class lists and maps \\ \cline{2-4}
               & \texttt{UNKNOWNNAME}& {\tt !!UNK}  & Set OOV class symbol\\ \cline{2-4}
               & \texttt{UNKNOWNID}  & \texttt{1}   & Set unknown symbol class ID \\
\hline

               & \texttt{UNIFLOOR}   & {\tt 1}      & Unigram floor count \\ \cline{2-4}
\htool{LPCalc}  & \texttt{KRANGE}     & {\tt 7}      & Good-Turing discounting range \\ \cline{2-4}
               & \texttt{\textit{n}G\_CUTOFF} & {\tt 1} & \textit{n}-gram cutoff
               (eg. \texttt{2G\_CUTOFF})\\ \cline{2-4}
               & \texttt{DCTYPE}     & \texttt{TG}  & Discounting type
                (\texttt{TG} for Turing-Good or \texttt{ABS} for Absolute\\ 
% or  \texttt{LIN} for Linear)  - this seems not to have been fully implemented (!) \\
\hline
\htool{LGBase} & \texttt{CHECKORDER} & \texttt{F}   & Check N-gram ordering in files \\

\htool{HLVLM} & \texttt{RAWMITFORMAT}& \texttt{F}  & Disable \HTK\ escaping for LM tools\\ \hline
\htool{HLVRec} & \texttt{MAXLMLA} & off & Maximum jump in LM lookahead per model \\\cline{2-4}
  & \texttt{BUILDLATSENTEND} & F & Build lattice from single token in the SENTEND node \\\cline{2-4}
  & \texttt{FORCELATOUT} & T & Always output lattice, even when no token survived \\\cline{2-4}
  & \texttt{GCFREQ} & 100 & Garbage collection period, unit is frame. \\\hline

\end{supertabular}
\end{center}
%\caption{Library Module Configuration Variables (cont)}
%\end{table}
\clearpage

\newpage
\mysect{Configuration Variables used in Tools}{conintools}

\begin{center}
\tablecaption{Tool Specific Configuration Variables}
\tablehead{\hline
Module & Name & Default & Description  \\ \hline\hline}
\tabletail{\hline}
\begin{supertabular}{|p{1.8cm}|l|l|p{6.6cm}|}

% HCompV
  & \texttt{UPDATEMEANS} & \texttt{F} & Update means \\ \cline{2-4}
\htool{HCompV} & \texttt{SAVEBINARY} & \texttt{F} & Load/Save in binary format \\ \cline{2-4}
  & \texttt{MINVARFLOOR} & \texttt{0.0} & Minimum variance floor \\ \hline

% HCopy
  & \texttt{NSTREAMS} & \texttt{1} & Number of streams \\ \cline{2-4}
  & \texttt{SAVEASVQ} & \texttt{F} & Save only the VQ indices \\ \cline{2-4}
\htool{HCopy} & \texttt{SOURCEFORMAT} & \texttt{HTK} & File format of source \\ \cline{2-4}
  & \texttt{TARGETFORMAT} & \texttt{HTK} & File format of target \\ \cline{2-4}
  & \texttt{SOURCEKIND} & \texttt{ANON} & Parameter kind of source \\ \cline{2-4}
  & \texttt{TARGETKIND} & \texttt{ANON} & Parameter kind of target \\ \hline

%HERest
\htool{HERest} 
  & \texttt{SAVEBINARY} & \texttt{F} & Load/Save in binary format \\ \cline{2-4}
  & \texttt{BINARYACFORMAT} & \texttt{T} & Load/Save accumulators in binary format \\ \cline{2-4}
  & \texttt{ALIGNMODELMMF} & & MMF file for alignment (2-model reest)  \\ \cline{2-4}
  & \texttt{ALIGNHMMLIST}  & & Model list for alignment (2-model reest) \\ \cline{2-4}
  & \texttt{ALIGNMODELDIR} & & Dir containing HMMs for alignment (2-model reest).  \\ \cline{2-4}
  & \texttt{ALIGNXFORMDIR} & & Ext to be used with above Dir (2model-reest) \\  \cline{2-4}
  & \texttt{ALIGNXFORMEXT} & & Input transform ext to be used with 2model-reest \\  \cline{2-4}
  & \texttt{ALIGNXFORMDIR} & & Input transform dir to be used with 2model-reest \\  \cline{2-4}
  & \texttt{INXFORMMASK} & & Input transform mask (default output transform mask) \\  \cline{2-4}
  & \texttt{PAXFORMMASK} & & Parent transform mask (default output parent mask) \\  \cline{2-4}
  & \texttt{UPDATEMODE} & & with \texttt{-p 0} choose mode:
  \texttt{UDATE} update models (default), \texttt{DUMP} dump sum of
  accumulators, \texttt{BOTH} do both\\  \cline{2-4} 
\hline

% HHEd
\htool{HHEd} & \texttt{TREEMERGE} & \texttt{T} & After tree splitting, merge leaves \\ \cline{2-4}
  & \texttt{TIEDMIXNAME} & \texttt{TM} & Tied mixture base name \\ \cline{2-4}
  & \texttt{APPLYVFLOOR} & \texttt{T} & Apply variance floor to model set \\  \cline{2-4}
  & \texttt{USELEAFSTATS} & \texttt{T} & Use stats to obtain tied state pdf's \\ \cline{2-4}
  & \texttt{MMFIDMASK} & * & Used with RC \htool{HHEd} command \\
 \hline

% HMMIRest
& \texttt{VARFLOORPERCENTILE} & \texttt{0} & Maximum number of Gaussian components (as the percentage of the total Gaussian components in the system) to undergo variance floor \\ \cline{2-4}
& \texttt{C} & \texttt{1.0} & C value for both component weights and transition probabilities update \\ \cline{2-4}
& \texttt{CW} & \texttt{1.0} & C value for component weights update\\ \cline{2-4}
& \texttt{CT} & \texttt{1.0} & C value for transition probabilities update\\ \cline{2-4}
& \texttt{MINOCC} & \texttt{10} & Minimum occupancy counts for Gaussian means and variances \\ \cline{2-4}
& \texttt{MINOCCTRANS} & \texttt{10} & Minimum occupancy counts for transition probabilities \\ \cline{2-4}
& \texttt{MINOCCWEIGHTS} & \texttt{10} & Minimum occupancy counts for component weights \\ \cline{2-4}
& \texttt{SAVEBINARY} & \texttt{F} & Save HMM models in binary format \\ \cline{2-4}
& \texttt{E} & \texttt{2.0} & Scaling factor for the denominator counts to determine D-smoothing constant value \\ \cline{2-4}
\htool{HMMIRest} 
& \texttt{DFACTOROCC} & \texttt{2.0} & Scaling factor for the D-smoothing constant value required to yield positive variances \\ \cline{2-4}
& \texttt{HCRIT} & \texttt{1.0} & Scaling factor for the denominator statistics \\ \cline{2-4}
& \texttt{MPE} & \texttt{F} & Use MPE criterion \\ \cline{2-4}
& \texttt{MWE} & \texttt{F} & Use MWE criterion \\ \cline{2-4}
& \texttt{MEE} & \texttt{F} & Use MWE criterion if MWE is set to \texttt{TRUE} for \htool{HFBLat}. Otherwise, use MPE criterion \\ \cline{2-4}
& \texttt{MLE} & \texttt{F} & Use MLE criterion \\ \cline{2-4}
& \texttt{MMIPRIOR} & \texttt{F} & Use dynamic MMI prior \\ \cline{2-4}
& \texttt{MMITAUI} & \texttt{0.0} & I-smoothing constant value for MMI prior \\ \cline{2-4}
& \texttt{ISMOOTHTAU} & \texttt{0.0} & I-smoothing constant value for Gaussian means and variances \\ \cline{2-4}
& \texttt{ICRITOCC} & \texttt{0.0} & Same as \texttt{ISMOOTHTAU} \\ \cline{2-4}
& \texttt{ISMOOTHTAUT} & \texttt{0.0} & I-smoothing constant value for transition probabilities \\ \cline{2-4}
& \texttt{ISMOOTHTAUW} & \texttt{0.0} & I-smoothing constant value for component weights \\ \cline{2-4}
& \texttt{PRIORTAU} & \texttt{0.0} & Prior smoothing constant value for Gaussian means and variances \\ \cline{2-4}
& \texttt{PRIORTAUW} & \texttt{0.0} & Prior smoothing constant value for component weights \\ \cline{2-4}
& \texttt{PRIORTAUT} & \texttt{0.0} & Prior smoothing constant value for transition probabilities \\ \cline{2-4}
& \texttt{PRIORK} & \texttt{0.0} & Weights (between 0 and 1) on the prior. \\ \cline{2-4}
& \texttt{MIXWEIGHTFLOOR} & \texttt{2.0} & Component weights floor (as the number of times of \texttt{MINMIX}) \\ \cline{2-4}
& \texttt{LATFILEMASK} & \texttt{NULL} & Mask for lattice filename \\ \cline{2-4}
& \texttt{LATMASKNUM} & \texttt{NULL} & Mask for numerator lattice directory \\ \cline{2-4}
& \texttt{LATMASKDEN} & \texttt{NULL} & Mask for denominator lattice directory \\ \cline{2-4}
& \texttt{INXFORMMASK} & \texttt{NULL} & Speaker mask for loading input adaptation transforms \\ \cline{2-4}
& \texttt{PAXFORMMASK} & \texttt{NULL} & Speaker mask for loading parent adaptation transforms \\ \cline{2-4}
& \texttt{USELLF} & \texttt{F} & Load lattices in LLF format \\ \cline{2-4}
& \texttt{UPDATEMODE} & \texttt{UPMODE\_UPDATE} & Update mode. Possible values are \texttt{UPMODE\_UPDATE}, \texttt{UPMODE\_DUMP} or \texttt{UPMODE\_BOTH}\\ \hline

% HParse
\htool{HParse} & \texttt{V1COMPAT} & \texttt{F} & Enable compatibility with HTK V1.X \\ \hline

% HResults
  & \texttt{REFLEVEL} & \texttt{0} & Label level to be used as reference \\ \cline{2-4}
  & \texttt{TESTLEVEL} & \texttt{0} & Label level to be scored \\ \cline{2-4}
  & \texttt{STRIPCONTEXT} & \texttt{F} & Strip triphone contexts \\ \cline{2-4}
\htool{HResults} & \texttt{IGNORECASE} & \texttt{F} & If enabled,
  converts labels to uppercase \\ \cline{2-4}
  & \texttt{NISTSCORE} & \texttt{F} & Use NIST fomatting \\ \cline{2-4}
  & \texttt{PHRASELABEL} & \texttt{SENT} & Label for phrase level statistics \\ \cline{2-4}
  & \texttt{PHONELABEL} & \texttt{WORD} & Label for word level statistics \\ \cline{2-4}
  & \texttt{SPEAKERMASK} & \texttt{NULL} & If set then report on a per
  speaker basis \\ \hline 

% HVite
  & \texttt{RECOUTPREFIX} & \texttt{NULL} & Prefix for direct
  audio output name \\ \cline{2-4}
\htool{HVite} & \texttt{RECOUTSUFFIX} & \texttt{NULL} & Suffix for direct audio output name\\ \cline{2-4}
  & \texttt{SAVEBINARY} & \texttt{F} & Save transforms as binary \\ \hline

% HLStats
\htool{HLStats} & \texttt{DISCOUNT} & \texttt{0.5} & Discount constant
  for backoff bigrams\\ \hline

% HList
\htool{HList} 
  & \texttt{AUDIOSIG} & \texttt{0} & Audio signal numberfor remote control 
  \\ \cline{2-4}
  & \texttt{SOURCERATE} & \texttt{0.0} & Sample rate of source in 100ns units 
  \\ \hline

% all
  & \texttt{TRACE} & \texttt{0} & Trace setting\\ \hline

\htool{HDecode}
& \texttt{USEHMODEL} & F & Use adaptation data structure and likelihood calulation routine of 
\htool{HModel} \\\cline{2-4}
 & \texttt{STARTWORD} & $<$s$>$ & Word used as the start of network \\\cline{2-4}
 & \texttt{ENDWORD} & $<$/s$>$ & Word used as the end of network \\\cline{2-4}
 & \texttt{FASTLMLABEAM} & off & Fast language model look ahead beam \\\hline

\end{supertabular}
\end{center}
%\caption{Tool Specific Configuration Variables}
%\end{table}
\clearpage


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