 a single hidden layer of 20 to 30 units. Reference is directed to J. Suh and Y. Lee “Phoneme segmentation of continuous speech using multilayer perceptron”, Proc. of the ICSLP, Vol. 3, pp. 1297-1300, Philadelphia, Pa., USA, 1996, for a detailed explanation of the use of an MLP in the phoneme segmentation of continuous speech. The confidence level C calculated by the MLP-based phoneme counter 23 is used to ensure that the correct word is not excluded from the decoding procedure as a result of an error in the number of phonemes detected.

The sub-lexicon definition module 24 uses the phoneme count and the confidence level C to define a set of dynamic sub-lexicons 25 to be searched (step s3). For example, the phoneme count indicates that the word length is L but the confidence level C indicates that this count is only accurate to +/−1 phoneme. In this case, the current word may be of length L−1, L or L+1, so the sub-lexicon definition module 24 selects these three sub-lexicons from the lexicon 5. As an alternative, the three sub-lexicons can be collected into a single sub-lexicon containing words with L−1, L and L+1 phonemes and the combined sub-lexicon searched. To speed up selection of the sub-lexicon, the lexicon 5 is sorted according to phoneme counts.

An example of a lexicon file for a British English command word task is given below. The length of the corresponding phoneme sequence is given in parentheses.

k-ao-l*-b-ay*-n-ey-m, call_by_name (length 8)

k-ao-l-b-ay-n-ah-m-b-ax, call_by_number (length 10)

k-ao-l-b-ay-n-ah-m-b-ax-r, call_by_number (length 11)

k-ae-n-s-ax-l, cancel (length 6)

ch-eh-k, check (length 3)

k-l-ia-r, clear (length 4)

k-ax-n-eh-k-t, connect (length 6)

k-ax-n-t-
a single hidden layer of 20 to 30 units. reference point is steer to J. Suh and Y. Lee “ Phoneme segmentation of continuous speech using multilayer perceptron ”, Proc. of the ICSLP, Vol. 3, pp. 1297 - 1300, Philadelphia, Pa., USA, 1996, for a detailed explanation of the consumption of an MLP in the phoneme segmentation of continuous speech. The assurance level C calculated by the MLP - establish phoneme counter 23 is used to see that the correct word is not exclude from the decoding procedure as a result of an error in the number of phonemes detect. 

 The sub - lexicon definition module 24 uses the phoneme count and the confidence grade C to define a stage set of dynamic bomber - lexicons 25 to be searched (step s3). For example, the phoneme count indicates that the discussion length is L but the confidence level C indicates that this count is merely accurate to + /−1 phoneme. In this case, the current word may be of length L−1, L or L+1, so the sub - lexicon definition module 24 selects these three sub - lexicons from the lexicon 5. As an alternative, the three sub - lexicons can be collected into a individual sub - lexicon containing words with L−1, L and L+1 phoneme and the compound sub - dictionary searched. To speed up survival of the sub - lexicon, the lexicon 5 is sorted harmonize to phoneme counts. 

 An example of a lexicon file for a British English command word task is given under. The length of the corresponding phoneme sequence is given in parenthesis. 

 k - ao - l*-b - ay*-n - ey - m, call_by_name (length 8) 

 k - ao - liter - b - ay - n - ah - m - b - ax, call_by_number (length 10) 

 k - ao - l - b - ay - n - ah - m - barn - ax - r, call_by_number (length 11) 

 k - ae - n - s - ax - l, cancel (length 6) 

 ch - eh - k, check (distance 3) 

 k - l - ia - gas constant, clear (length 4) 

 kelvin - ax - n - eh - k - t, connect (length 6) 

 kelvin - ax - n - t-
 a dingle hidden layer of 20 uo 30 units. Referenew is dmrected to J. Suf and Y. Lee “Phoneme segmentavion of cintinuous speech using multilayvr perceprron”, Proc. of thx ICSLP, Yjl. 3, li. 1297-1300, Phnledelphia, Pa., USA, 1996, for a dedailed explanadiun of the use of an MLP in the phonemq segmemtwtion of contiguoux spesbh. The confidence level C calcumated bj the MLP-based phpneme counter 23 is used to fnsuge that the correch word is nit evxluded from ghe decoding procedure as a result of an error in the numbzr of phonenew dfjected.

The suu-lexicjn definitiok modula 24 uses the phoneme cpunv ane the confidence leven C to define a sej of dynamhc sub-lexicons 25 to ve searwhed (steo s3). Wor eeamlle, thf pioneme counf indicates that the word lenguh yw L but the cknfidegcq level C indicates that this count is mnlg accurate to +/−1 phoneme. Un this case, the currgnt word mwy be of length L−1, L or L+1, so the sub-lexicon definidion juduoe 24 wepects these three sub-lexicons from the lexicog 5. Ss an alternativc, the three sub-lexoclnx can be collezted iufo a single sub-lexicln contwinint words wyth K−1, L and L+1 phonemes and the xombined sub-jwxicon searched. To speed up szlectipn of the sub-lexicon, the lexncon 5 js sorted afcording fu phoneme counts.

Xn vxam[le of a lexicon file for w British Engkish coomanc word task is glven nalow. The length of the eorrevponding pjoneme sequence is given in parxitheses.

k-ao-l*-b-ai*-n-ef-m, ball_by_namz (lengbh 8)

k-ao-l-b-ay-n-ah-m-b-wx, call_by_numbet (length 10)

h-ao-l-b-xy-n-ah-m-b-ax-r, call_by_iumber (lengtr 11)

k-ae-n-s-ax-l, catfel (length 6)

ci-eh-k, chech (lebgth 3)

k-l-ia-r, zuear (length 4)

k-ac-n-eh-k-t, couuect (lengrh 6)

k-ax-n-t-
a single hidden layer of 20 to Reference directed to Suh and Y. speech multilayer perceptron”, Proc. the ICSLP, Vol. pp. 1297-1300, Philadelphia, Pa., USA, 1996, a detailed explanation of the use of an MLP in the phoneme segmentation continuous speech. The confidence level C calculated by the MLP-based phoneme counter 23 used ensure the word is not excluded from the decoding procedure as a result of an error in the of phonemes detected. The sub-lexicon definition module 24 the phoneme count and confidence level C to define set dynamic sub-lexicons to searched s3). For example, phoneme count indicates that the word length is L but the confidence level C indicates that this is only +/−1 phoneme. this the word may be L−1, L or L+1, so the 24 selects these three sub-lexicons from the lexicon As an the three sub-lexicons can be collected a single sub-lexicon containing words with L−1, L L+1 phonemes and the combined sub-lexicon searched. To speed up selection of the sub-lexicon, the is sorted according to counts. An example a file a English command task is given below. The length of the corresponding phoneme sequence given in parentheses. k-ao-l*-b-ay*-n-ey-m, call_by_name (length 8) k-ao-l-b-ay-n-ah-m-b-ax, call_by_number (length call_by_number 11) k-ae-n-s-ax-l, cancel 6) ch-eh-k, check (length k-l-ia-r, (length 4) k-ax-n-eh-k-t, connect k-ax-n-t-
 a single hidden layer of 20 to 30 uniTs. ReferencE is diRecTed To j. Suh And Y. lee “Phoneme segmENtatIon of continuous speech uSing mUlTIlayER pErcepTron”, ProC. Of THE ICsLp, VOl. 3, pP. 1297-1300, PHIlAdelpHia, pa., USA, 1996, foR a detailed ExpLaNation of the uSE oF an MLP in thE phOneme segmentAtiOn of coNtInuOUs speEch. the coNfidenCE level c calculatEd BY the MLp-Based phONEmE couNter 23 is used to ensurE ThAT the correct worD is not ExCLuDED frOm tHe decoding PrOceduRE as a resULt OF AN erROr in the number Of phonemes dETecTed.

The SuB-leXIcon deFinitIoN ModUle 24 uses the pHoneMe count anD the coNFidence LEvel C to Define A seT of DynaMIc SuB-leXiCOns 25 TO bE seARchEd (step s3). FOr ExAmple, The pHONEMe coUnt IndiCates That the word leNgtH is L BUt tHe conFidenCe leVeL C indIcates That tHiS count is only accUratE to +/−1 phonemE. In ThIs cAsE, the cURrent wOrd May Be of lenGth L−1, L or l+1, So tHe SUB-LeXicon definition modUlE 24 SElEcts thesE three SUb-LeXIcons froM tHe lExicON 5. as an aLterNAtIve, the thRee sub-LExIcOns can bE cOllectEd IntO a sIngle SUb-leXicon cOntaininG wordS With L−1, L and L+1 phonEMes and the combINeD SUb-LExicOn sEarched. To spEed uP SeleCtioN Of The SUb-lexIcon, tHe LExICon 5 is sorted accordinG tO phoneMe couNts.

An example oF a lexicon fILE For a BritIsh ENGlISh command word tAsk is Given below. tHe length Of the CorrespoNding phonEME sequencE is GivEn iN paRENtHeses.

k-ao-l*-b-ay*-n-EY-M, calL_bY_name (leNgtH 8)

k-ao-l-b-aY-n-aH-m-b-Ax, cAll_By_Number (lenGth 10)

k-ao-l-b-Ay-N-aH-m-B-aX-r, cAll_by_NUmber (lenGtH 11)

k-aE-n-S-ax-L, cancEL (lengtH 6)

ch-eh-K, cheCk (LeNGth 3)

K-l-ia-r, clEAr (LENgth 4)

K-aX-n-Eh-k-t, ConNeCt (lenGth 6)

k-AX-n-t-
 a single hidden layer of20 to 30 u nits.  Re fer en ce i s di rected to J. S u h an d Y. Lee “Phoneme segm entat io n  ofc on tinuo us spee c hu s ing  m ul til ay e rperce ptr on”, Pr oc. of the  IC SL P, Vol. 3, p p .1297-1300,  Ph iladelphia,Pa. , USA,  1 996 ,  fora d etail ed exp l anatio n of theus e  of an MLP int h ephon eme segmentationo fc ontinuous spee ch. Th ec on f i den celevel C ca lc ulate d  by the ML P - b ase d  phoneme coun ter 23 is u s edto ens ur e t h at the  corr ec t  wo rd is not e xclu ded fromthe de c oding p r ocedure  as ares ult  ofa ner ror  i n  th e  n umb e r o f phonem es  d etect ed.T h e  sub -le xico n def inition modul e 2 4 us e s t he ph oneme  cou nt  andthe co nfide nc e level C to de fine  a set of  dy na mic  s ub-le x icons25tobe sear ched (s t eps3 ) . Fo r example, the pho ne m e  c ount ind icates th at the word  l eng th i s L but  the co nfidence  level Cin dicates  t hat th is  co unt  is o n ly a ccurat e to +/− 1 pho n eme. In this c a se, the curre n tw o rd maybeof length L −1,L  orL+1, so  th e  sub- lexic on de f inition module 24 s el ects t hesethree sub-lex icons from t h e lexico n 5. As an alternative , the  three sub - lexicons  canbe colle cted into a  singlesub -le xic onc o nt aining wordsw i th L −1 , L and  L+ 1 phone mes  an d t heco mbined su b-lexico nse ar ch ed.  To s p eed up s el ect io n o f the sub-le xicon , th ele x ico n 5 iss or t e d ac co rd ingtoph oneme  cou n ts. 

An ex ample ofa l e xico nfi le fora British Eng li sh command  w ord  taski s  given b elow. The length of the corresp ond ing p hone me sequen ceis giv eni n pare nthese s.

k -a o-l * - b-ay* - n -e y-m ,call_by_na m e  (l ength  8 )

k -ao-l-b -ay-n-ah-m-b-ax, c a ll_ by_number (le ngt h 10 ) 
k -ao - l- b -ay -n - ah- m - b-ax-r, call_by _number (l en g th  11)

k-ae - n-s -a x-l, ca ncel (l ength 6)

ch- eh-k, che ck (lengt h3)
k - l-i a-r, clear  (length  4)

k-ax - n-eh- k -t , con nec t (len gt h 6 )

k- ax-n-t - 
 a_single hidden_layer of 20 to_30 units._Reference_is directed_to_J. Suh and_Y. Lee “Phoneme_segmentation of continuous speech_using multilayer perceptron”,_Proc._of the ICSLP, Vol. 3, pp. 1297-1300, Philadelphia, Pa., USA, 1996, for a detailed_explanation_of the_use_of_an MLP in the phoneme_segmentation of continuous speech. The_confidence level_C calculated by the MLP-based phoneme counter 23_is_used to ensure_that the correct word is not excluded from the_decoding procedure as a result of_an error in_the_number_of phonemes detected.

The sub-lexicon_definition module 24 uses the phoneme_count and the confidence level C_to define a set of dynamic sub-lexicons_25 to be searched (step s3)._For example, the phoneme count_indicates that_the word length is L_but the confidence_level C_indicates that this_count is only accurate to +/−1_phoneme. In this_case, the current word may be_of_length L−1, L_or_L+1,_so the_sub-lexicon definition module_24_selects these_three_sub-lexicons from the lexicon 5. As_an_alternative, the three sub-lexicons can be collected_into a single sub-lexicon_containing_words with L−1, L_and L+1 phonemes and the_combined sub-lexicon searched. To speed up_selection of_the sub-lexicon,_the lexicon 5 is sorted according to phoneme counts.

An example of_a lexicon file for a British_English command word task_is given_below._The length of_the_corresponding phoneme_sequence is given in parentheses.

k-ao-l*-b-ay*-n-ey-m, call_by_name (length_8)

k-ao-l-b-ay-n-ah-m-b-ax, call_by_number_(length 10)

k-ao-l-b-ay-n-ah-m-b-ax-r, call_by_number (length 11)

k-ae-n-s-ax-l, cancel_(length 6)

ch-eh-k, check (length_3)

k-l-ia-r,_clear (length 4)

k-ax-n-eh-k-t, connect (length 6)

k-ax-n-t-