/*************************************************************************/ /* */ /* Language Technologies Institute */ /* Carnegie Mellon University */ /* Copyright (c) 2001 */ /* All Rights Reserved. */ /* */ /* Permission is hereby granted, free of charge, to use and distribute */ /* this software and its documentation without restriction, including */ /* without limitation the rights to use, copy, modify, merge, publish, */ /* distribute, sublicense, and/or sell copies of this work, and to */ /* permit persons to whom this work is furnished to do so, subject to */ /* the following conditions: */ /* 1. The code must retain the above copyright notice, this list of */ /* conditions and the following disclaimer. */ /* 2. Any modifications must be clearly marked as such. */ /* 3. Original authors' names are not deleted. */ /* 4. The authors' names are not used to endorse or promote products */ /* derived from this software without specific prior written */ /* permission. */ /* */ /* CARNEGIE MELLON UNIVERSITY AND THE CONTRIBUTORS TO THIS WORK */ /* DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING */ /* ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT */ /* SHALL CARNEGIE MELLON UNIVERSITY NOR THE CONTRIBUTORS BE LIABLE */ /* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES */ /* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN */ /* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, */ /* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF */ /* THIS SOFTWARE. */ /* */ /*************************************************************************/ /* Author: Alan W Black (awb@cs.cmu.edu) */ /* Date: January 2001 */ /*************************************************************************/ /* */ /* CMU Lexicon definition */ /* */ /*************************************************************************/ #include "flite.h" #include "cmu_lex.h" extern const int cmu_lex_entry[]; extern const unsigned char cmu_lex_data[]; extern const int cmu_lex_num_entries; extern const int cmu_lex_num_bytes; extern const char * const cmu_lex_phone_table[54]; extern const char * const cmu_lex_phones_huff_table[]; extern const char * const cmu_lex_entries_huff_table[]; static int cmu_is_vowel(const char *p); static int cmu_is_silence(const char *p); static int cmu_has_vowel_in_list(const cst_val *v); static int cmu_has_vowel_in_syl(const cst_item *i); static int cmu_sonority(const char *p); static const char * const addenda0[] = { "p,", NULL }; static const char * const addenda1[] = { "p.", NULL }; static const char * const addenda2[] = { "p(", NULL }; static const char * const addenda3[] = { "p)", NULL }; static const char * const addenda4[] = { "p[", NULL }; static const char * const addenda5[] = { "p]", NULL }; static const char * const addenda6[] = { "p{", NULL }; static const char * const addenda7[] = { "p}", NULL }; static const char * const addenda8[] = { "p:", NULL }; static const char * const addenda9[] = { "p;", NULL }; static const char * const addenda10[] = { "p?", NULL}; static const char * const addenda11[] = { "p!", NULL }; static const char * const addenda12[] = { "n@", "ae1", "t", NULL }; static const char * const addenda13[] = { "n#", "hh", "ae1","sh", NULL }; static const char * const addenda14[] = { "n$", "d", "aa1", "l", "er", NULL }; static const char * const addenda15[] = { "n%", "p", "er", "s", "eh1", "n", "t", NULL }; static const char * const addenda16[] = { "n^", "k", "eh1", "r", "eh1", "t", NULL }; static const char * const addenda17[] = { "n&","ae1","m","p","er","s","ae1","n","d", NULL }; static const char * const addenda18[] = { "n*","ae1","s","t","er","ih1","s","k",NULL }; static const char * const addenda19[] = { "n|","b","aa1","r",NULL }; static const char * const addenda20[] = { "n\\","b","ae1","k","s","l","ae1","sh",NULL }; static const char * const addenda21[] = { "n=","iy1","k","w","ax","l","z",NULL}; static const char * const addenda22[] = { "n+","p","l","ah1","s",NULL}; static const char * const addenda23[] = { "n~","t","ih1","l","d","ax",NULL}; static const char * const addenda24[] = { "p'",NULL}; static const char * const addenda25[] = { "p`",NULL}; static const char * const addenda26[] = { "p\"",NULL}; static const char * const addenda27[] = { "p-",NULL}; static const char * const addenda28[] = { "p<",NULL}; static const char * const addenda29[] = { "p>",NULL}; static const char * const addenda30[] = { "n_","ah1","n","d","er","s","k","ao1","r",NULL}; static const char * const addenda31[] = { "s's","z",NULL}; static const char * const addenda32[] = { "nim","ay1","m",NULL}; static const char * const addenda33[] = { "vdoesnt","d","ah1","z","n","t",NULL}; static const char * const addenda34[] = { "vyoull","y","uw1","l",NULL}; static const char * const addenda35[] = { "n/","s","l","ae1","sh",NULL}; static const char * const addenda36[] = { "nin","ih","n",NULL}; static const char * const addenda37[] = { "nto","t","ax",NULL}; static const char * const addenda38[] = { "n_a","ey",NULL}; static const char * const addenda39[] = { "vhavent","hh","ae1","v","ax","n","t",NULL}; static const char * const * const addenda[] = { addenda0, addenda1, addenda2, addenda3, addenda4, addenda5, addenda6, addenda7, addenda8, addenda9, addenda10, addenda11, addenda12, addenda13, addenda14, addenda15, addenda16, addenda17, addenda18, addenda19, addenda20, addenda21, addenda22, addenda23, addenda24, addenda25, addenda26, addenda27, addenda28, addenda29, addenda30, addenda31, addenda32, addenda33, addenda34, addenda35, addenda36, addenda37, addenda38, addenda39, NULL }; static int cmu_is_silence(const char *p) { if (cst_streq(p,"pau")) return TRUE; else return FALSE; } static int cmu_has_vowel_in_list(const cst_val *v) { const cst_val *t; for (t=v; t; t=val_cdr(t)) if (cmu_is_vowel(val_string(val_car(t)))) return TRUE; return FALSE; } static int cmu_has_vowel_in_syl(const cst_item *i) { const cst_item *n; for (n=i; n; n=item_prev(n)) if (cmu_is_vowel(item_feat_string(n,"name"))) return TRUE; return FALSE; } static int cmu_is_vowel(const char *p) { /* this happens to work for US English phoneset */ if (strchr("aeiou",p[0]) == NULL) return FALSE; else return TRUE; } static int cmu_sonority(const char *p) { /* A bunch of hacks for US English phoneset */ if (cmu_is_vowel(p) || (cmu_is_silence(p))) return 5; else if (strchr("wylr",p[0]) != NULL) return 4; /* glides/liquids */ else if (strchr("nm",p[0]) != NULL) return 3; /* nasals */ else if (strchr("bdgjlmnnnrvwyz",p[0]) != NULL) return 2; /* voiced obstruents */ else return 1; } int cmu_syl_boundary(const cst_item *i,const cst_val *rest) { /* Returns TRUE if this should be a syllable boundary */ /* This is of course phone set dependent */ int p, n, nn; if (rest == NULL) return TRUE; else if (cmu_is_silence(val_string(val_car(rest)))) return TRUE; else if (!cmu_has_vowel_in_list(rest)) /* no more vowels so rest *all* coda */ return FALSE; else if (!cmu_has_vowel_in_syl(i)) /* need a vowel */ return FALSE; else if (cmu_is_vowel(val_string(val_car(rest)))) return TRUE; else if (val_cdr(rest) == NULL) return FALSE; else { /* so there is following vowel, and multiple phones left */ p = cmu_sonority(item_feat_string(i,"name")); n = cmu_sonority(val_string(val_car(rest))); nn = cmu_sonority(val_string(val_car(val_cdr(rest)))); if ((p <= n) && (n <= nn)) return TRUE; else return FALSE; } } static int cmulex_dist_to_vowel(const cst_val *rest) { if (rest == 0) return 0; /* shouldn't get here */ else if (cmu_is_vowel(val_string(val_car(rest)))) return 0; else return 1+cmulex_dist_to_vowel(val_cdr(rest)); } static const char * const cmulex_onset_trigrams[] = { "str", "spy", "spr", "spl", "sky", "skw", "skr", "skl", NULL }; static const char * const cmulex_onset_bigrams[] = { "zw", "zl", "vy", "vr", "vl", "thw", "thr", "ty", "tw", "tr", /* "ts", */ "shw", "shr", "shn", "shm", "shl", "sw", "sv", "st", "sr", "sp", "sn", "sm", "sl", "sk", "sf", "py", "pw", "pr", "pl", "ny", "my", "mr", "ly", "ky", "kw", "kr", "kl", "hhy", "hhw", "hhr", "hhl", "gy", "gw", "gr", "gl", "fy", "fr", "fl", "dy", "dw", "dr", "by", "bw", "br", "bl", NULL }; static int cmulex_onset_bigram(const cst_val *rest) { char x[10]; int i; cst_sprintf(x,"%s%s",val_string(val_car(rest)), val_string(val_car(val_cdr(rest)))); for (i=0; cmulex_onset_bigrams[i]; i++) if (cst_streq(x,cmulex_onset_bigrams[i])) return TRUE; return FALSE; } static int cmulex_onset_trigram(const cst_val *rest) { char x[15]; int i; cst_sprintf(x,"%s%s%s",val_string(val_car(rest)), val_string(val_car(val_cdr(rest))), val_string(val_car(val_cdr(val_cdr(rest))))); for (i=0; cmulex_onset_trigrams[i]; i++) if (cst_streq(x,cmulex_onset_trigrams[i])) return TRUE; return FALSE; } int cmu_syl_boundary_mo(const cst_item *i,const cst_val *rest) { /* syl boundary maximal onset */ int d2v; if (rest == NULL) return TRUE; else if (cmu_is_silence(val_string(val_car(rest)))) return TRUE; else if (!cmu_has_vowel_in_list(rest)) /* no more vowels so rest *all* coda */ return FALSE; else if (!cmu_has_vowel_in_syl(i)) /* need a vowel */ /* no vowel yet in syl so keep copying */ return FALSE; else if (cmu_is_vowel(val_string(val_car(rest)))) /* next is a vowel, syl has vowel, so this is a break */ return TRUE; else if (cst_streq("ng",val_string(val_car(rest)))) /* next is "ng" which can't start a word internal syl */ return FALSE; else { /* want to know if from rest to the next vowel is a valid onset */ d2v = cmulex_dist_to_vowel(rest); if (d2v < 2) return TRUE; else if (d2v > 3) return FALSE; else if (d2v == 2) return cmulex_onset_bigram(rest); else /* if (d2v == 3) */ return cmulex_onset_trigram(rest); return TRUE; } } cst_lexicon cmu_lex; cst_lts_rules cmu_lts_rules; extern const char * const cmu_lts_phone_table[]; extern const char * const cmu_lts_letter_table[]; extern const cst_lts_addr cmu_lts_letter_index[]; extern const cst_lts_model cmu_lts_model[]; cst_lexicon *cmu_lex_init() { /* I'd like to do this as a const but it needs everything in this */ /* file and already the bits are too big for some compilers */ if (cmu_lts_rules.name) return &cmu_lex; /* Already initialized */ cmu_lts_rules.name = "cmu"; cmu_lts_rules.letter_index = cmu_lts_letter_index; #ifdef CST_NO_STATIC_LTS_MODEL /* cmu_lts_rules.models will be set elsewhere */ #else cmu_lts_rules.models = cmu_lts_model; #endif cmu_lts_rules.phone_table = cmu_lts_phone_table; cmu_lts_rules.context_window_size = 4; cmu_lts_rules.context_extra_feats = 1; cmu_lts_rules.letter_table = 0 /* cmu_lts_letter_table */; cmu_lex.name = "cmu"; cmu_lex.num_entries = cmu_lex_num_entries; #ifdef CST_NO_STATIC_LEX /* cmu_lex.data will be set elsewhere */ #else cmu_lex.data = cmu_lex_data; #endif cmu_lex.num_bytes = cmu_lex_num_bytes; cmu_lex.phone_table = (char **) cmu_lex_phone_table; cmu_lex.syl_boundary = cmu_syl_boundary_mo; cmu_lex.addenda = (char ***) addenda; cmu_lex.lts_rule_set = (cst_lts_rules *) &cmu_lts_rules; cmu_lex.phone_hufftable = cmu_lex_phones_huff_table; cmu_lex.entry_hufftable = cmu_lex_entries_huff_table; cmu_lex.postlex = cmu_postlex; return &cmu_lex; }