1 /* ----------------------------------------------------------------- */
2 /* The HMM-Based Speech Synthesis Engine "hts_engine API" */
3 /* developed by HTS Working Group */
4 /* http://hts-engine.sourceforge.net/ */
5 /* ----------------------------------------------------------------- */
7 /* Copyright (c) 2001-2013 Nagoya Institute of Technology */
8 /* Department of Computer Science */
10 /* 2001-2008 Tokyo Institute of Technology */
11 /* Interdisciplinary Graduate School of */
12 /* Science and Engineering */
14 /* All rights reserved. */
16 /* Redistribution and use in source and binary forms, with or */
17 /* without modification, are permitted provided that the following */
18 /* conditions are met: */
20 /* - Redistributions of source code must retain the above copyright */
21 /* notice, this list of conditions and the following disclaimer. */
22 /* - Redistributions in binary form must reproduce the above */
23 /* copyright notice, this list of conditions and the following */
24 /* disclaimer in the documentation and/or other materials provided */
25 /* with the distribution. */
26 /* - Neither the name of the HTS working group nor the names of its */
27 /* contributors may be used to endorse or promote products derived */
28 /* from this software without specific prior written permission. */
30 /* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND */
31 /* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, */
32 /* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */
33 /* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE */
34 /* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS */
35 /* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, */
36 /* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED */
37 /* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, */
38 /* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON */
39 /* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, */
40 /* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY */
41 /* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE */
42 /* POSSIBILITY OF SUCH DAMAGE. */
43 /* ----------------------------------------------------------------- */
49 #define HTS_HIDDEN_H_START extern "C" {
50 #define HTS_HIDDEN_H_END }
52 #define HTS_HIDDEN_H_START
53 #define HTS_HIDDEN_H_END
54 #endif /* __CPLUSPLUS */
58 /* hts_engine libraries */
59 #include "HTS_engine.h"
61 /* common ---------------------------------------------------------- */
63 #define HTS_MAXBUFLEN 1024
65 #if !defined(WORDS_BIGENDIAN) && !defined(WORDS_LITTLEENDIAN)
66 #define WORDS_LITTLEENDIAN
67 #endif /* !WORDS_BIGENDIAN && !WORDS_LITTLEENDIAN */
68 #if defined(WORDS_BIGENDIAN) && defined(WORDS_LITTLEENDIAN)
69 #undef WORDS_BIGENDIAN
70 #endif /* WORDS_BIGENDIAN && WORDS_LITTLEENDIAN */
72 #define MAX_F0 20000.0
74 #define MAX_LF0 9.9034875525361280454891979401956 /* log(20000.0) */
75 #define MIN_LF0 2.9957322735539909934352235761425 /* log(20.0) */
76 #define HALF_TONE 0.05776226504666210911810267678818 /* log(2.0) / 12.0 */
77 #define DB 0.11512925464970228420089957273422 /* log(10.0) / 20.0 */
79 /* misc ------------------------------------------------------------ */
81 typedef struct _HTS_File {
86 /* HTS_fopen: wrapper for fopen */
87 HTS_File *HTS_fopen_from_fn(const char *name, const char *opt);
89 /* HTS_fopen_from_fp: wrapper for fopen */
90 HTS_File *HTS_fopen_from_fp(HTS_File * fp, size_t size);
92 /* HTS_fopen_from_data: wrapper for fopen */
93 HTS_File *HTS_fopen_from_data(void *data, size_t size);
95 /* HTS_fclose: wrapper for fclose */
96 void HTS_fclose(HTS_File * fp);
98 /* HTS_fgetc: wrapper for fgetc */
99 int HTS_fgetc(HTS_File * fp);
101 /* HTS_feof: wrapper for feof */
102 int HTS_feof(HTS_File * fp);
104 /* HTS_fseek: wrapper for fseek */
105 int HTS_fseek(HTS_File * fp, long offset, int origin);
107 /* HTS_ftell: wrapper for ftell */
108 size_t HTS_ftell(HTS_File * fp);
110 /* HTS_fread_big_endiana: fread with byteswap */
111 size_t HTS_fread_big_endian(void *buf, size_t size, size_t n, HTS_File * fp);
113 /* HTS_fread_little_endiana: fread with byteswap */
114 size_t HTS_fread_little_endian(void *buf, size_t size, size_t n, HTS_File * fp);
116 /* HTS_fwrite_little_endian: fwrite with byteswap */
117 size_t HTS_fwrite_little_endian(const void *buf, size_t size, size_t n, FILE * fp);
119 /* HTS_get_pattern_token: get pattern token (single/double quote can be used) */
120 HTS_Boolean HTS_get_pattern_token(HTS_File * fp, char *buff);
122 /* HTS_get_token: get token from file pointer (separators are space,tab,line break) */
123 HTS_Boolean HTS_get_token_from_fp(HTS_File * fp, char *buff);
125 /* HTS_get_token: get token from file pointer with specified separator */
126 HTS_Boolean HTS_get_token_from_fp_with_separator(HTS_File * fp, char *buff, char separator);
128 /* HTS_get_token_from_string: get token from string (separator are space,tab,line break) */
129 HTS_Boolean HTS_get_token_from_string(const char *string, size_t * index, char *buff);
131 /* HTS_get_token_from_string_with_separator: get token from string with specified separator */
132 HTS_Boolean HTS_get_token_from_string_with_separator(const char *str, size_t * index, char *buff, char separator);
134 /* HTS_calloc: wrapper for calloc */
135 void *HTS_calloc(const size_t num, const size_t size);
137 /* HTS_strdup: wrapper for strdup */
138 char *HTS_strdup(const char *string);
140 /* HTS_calloc_matrix: allocate double matrix */
141 double **HTS_alloc_matrix(size_t x, size_t y);
143 /* HTS_free_matrix: free double matrix */
144 void HTS_free_matrix(double **p, size_t x);
146 /* HTS_Free: wrapper for free */
147 void HTS_free(void *p);
149 /* HTS_error: output error message */
150 void HTS_error(int error, const char *message, ...);
152 /* audio ----------------------------------------------------------- */
154 /* HTS_Audio_initialize: initialize audio */
155 void HTS_Audio_initialize(HTS_Audio * audio);
157 /* HTS_Audio_set_parameter: set parameters for audio */
158 void HTS_Audio_set_parameter(HTS_Audio * audio, size_t sampling_frequency, size_t max_buff_size);
160 /* HTS_Audio_write: send data to audio */
161 void HTS_Audio_write(HTS_Audio * audio, short data);
163 /* HTS_Audio_flush: flush remain data */
164 void HTS_Audio_flush(HTS_Audio * audio);
166 /* HTS_Audio_clear: free audio */
167 void HTS_Audio_clear(HTS_Audio * audio);
169 /* model ----------------------------------------------------------- */
171 /* HTS_ModelSet_initialize: initialize model set */
172 void HTS_ModelSet_initialize(HTS_ModelSet * ms);
174 /* HTS_ModelSet_load: load HTS voices */
175 HTS_Boolean HTS_ModelSet_load(HTS_ModelSet * ms, char **voices, size_t num_voices);
177 /* HTS_ModelSet_get_sampling_frequency: get sampling frequency of HTS voices */
178 size_t HTS_ModelSet_get_sampling_frequency(HTS_ModelSet * ms);
180 /* HTS_ModelSet_get_fperiod: get frame period of HTS voices */
181 size_t HTS_ModelSet_get_fperiod(HTS_ModelSet * ms);
183 /* HTS_ModelSet_get_fperiod: get stream option */
184 const char *HTS_ModelSet_get_option(HTS_ModelSet * ms, size_t stream_index);
186 /* HTS_ModelSet_get_gv_flag: get GV flag */
187 HTS_Boolean HTS_ModelSet_get_gv_flag(HTS_ModelSet * ms, const char *string);
189 /* HTS_ModelSet_get_nstate: get number of state */
190 size_t HTS_ModelSet_get_nstate(HTS_ModelSet * ms);
192 /* HTS_ModelSet_get_nstream: get number of stream */
193 size_t HTS_ModelSet_get_nstream(HTS_ModelSet * ms);
195 /* HTS_ModelSet_get_nvoices: get number of HTS voices */
196 size_t HTS_ModelSet_get_nvoices(HTS_ModelSet * ms);
198 /* HTS_ModelSet_get_vector_length: get vector length */
199 size_t HTS_ModelSet_get_vector_length(HTS_ModelSet * ms, size_t stream_index);
201 /* HTS_ModelSet_is_msd: get MSD flag */
202 HTS_Boolean HTS_ModelSet_is_msd(HTS_ModelSet * ms, size_t stream_index);
204 /* HTS_ModelSet_get_window_size: get dynamic window size */
205 size_t HTS_ModelSet_get_window_size(HTS_ModelSet * ms, size_t stream_index);
207 /* HTS_ModelSet_get_window_left_width: get left width of dynamic window */
208 int HTS_ModelSet_get_window_left_width(HTS_ModelSet * ms, size_t stream_index, size_t window_index);
210 /* HTS_ModelSet_get_window_right_width: get right width of dynamic window */
211 int HTS_ModelSet_get_window_right_width(HTS_ModelSet * ms, size_t stream_index, size_t window_index);
213 /* HTS_ModelSet_get_window_coefficient: get coefficient of dynamic window */
214 double HTS_ModelSet_get_window_coefficient(HTS_ModelSet * ms, size_t stream_index, size_t window_index, size_t coefficient_index);
216 /* HTS_ModelSet_get_window_max_width: get max width of dynamic window */
217 size_t HTS_ModelSet_get_window_max_width(HTS_ModelSet * ms, size_t stream_index);
219 /* HTS_ModelSet_use_gv: get GV flag */
220 HTS_Boolean HTS_ModelSet_use_gv(HTS_ModelSet * ms, size_t stream_index);
222 /* HTS_ModelSet_get_duration_index: get index of duration tree and PDF */
223 void HTS_ModelSet_get_duration_index(HTS_ModelSet * ms, size_t voice_index, const char *string, size_t * tree_index, size_t * pdf_index);
225 /* HTS_ModelSet_get_duration: get duration using interpolation weight */
226 void HTS_ModelSet_get_duration(HTS_ModelSet * ms, const char *string, const double *iw, double *mean, double *vari);
228 /* HTS_ModelSet_get_parameter_index: get index of parameter tree and PDF */
229 void HTS_ModelSet_get_parameter_index(HTS_ModelSet * ms, size_t voice_index, size_t stream_index, size_t state_index, const char *string, size_t * tree_index, size_t * pdf_index);
231 /* HTS_ModelSet_get_parameter: get parameter using interpolation weight */
232 void HTS_ModelSet_get_parameter(HTS_ModelSet * ms, size_t stream_index, size_t state_index, const char *string, const double *iw, double *mean, double *vari, double *msd);
234 void HTS_ModelSet_get_gv_index(HTS_ModelSet * ms, size_t voice_index, size_t stream_index, const char *string, size_t * tree_index, size_t * pdf_index);
236 /* HTS_ModelSet_get_gv: get GV using interpolation weight */
237 void HTS_ModelSet_get_gv(HTS_ModelSet * ms, size_t stream_index, const char *string, const double *iw, double *mean, double *vari);
239 /* HTS_ModelSet_clear: free model set */
240 void HTS_ModelSet_clear(HTS_ModelSet * ms);
242 /* label ----------------------------------------------------------- */
244 /* HTS_Label_initialize: initialize label */
245 void HTS_Label_initialize(HTS_Label * label);
247 /* HTS_Label_load_from_fn: load label from file name */
248 void HTS_Label_load_from_fn(HTS_Label * label, size_t sampling_rate, size_t fperiod, const char *fn);
250 /* HTS_Label_load_from_strings: load label list from string list */
251 void HTS_Label_load_from_strings(HTS_Label * label, size_t sampling_rate, size_t fperiod, char **lines, size_t num_lines);
253 /* HTS_Label_get_size: get number of label string */
254 size_t HTS_Label_get_size(HTS_Label * label);
256 /* HTS_Label_get_string: get label string */
257 const char *HTS_Label_get_string(HTS_Label * label, size_t index);
259 /* HTS_Label_get_start_frame: get start frame */
260 double HTS_Label_get_start_frame(HTS_Label * label, size_t index);
262 /* HTS_Label_get_end_frame: get end frame */
263 double HTS_Label_get_end_frame(HTS_Label * label, size_t index);
265 /* HTS_Label_clear: free label */
266 void HTS_Label_clear(HTS_Label * label);
268 /* sstream --------------------------------------------------------- */
270 /* HTS_SStreamSet_initialize: initialize state stream set */
271 void HTS_SStreamSet_initialize(HTS_SStreamSet * sss);
273 /* HTS_SStreamSet_create: parse label and determine state duration */
274 HTS_Boolean HTS_SStreamSet_create(HTS_SStreamSet * sss, HTS_ModelSet * ms, HTS_Label * label, HTS_Boolean phoneme_alignment_flag, double speed, double *duration_iw, double **parameter_iw, double **gv_iw);
276 /* HTS_SStreamSet_get_nstream: get number of stream */
277 size_t HTS_SStreamSet_get_nstream(HTS_SStreamSet * sss);
279 /* HTS_SStreamSet_get_vector_length: get vector length */
280 size_t HTS_SStreamSet_get_vector_length(HTS_SStreamSet * sss, size_t stream_index);
282 /* HTS_SStreamSet_is_msd: get MSD flag */
283 HTS_Boolean HTS_SStreamSet_is_msd(HTS_SStreamSet * sss, size_t stream_index);
285 /* HTS_SStreamSet_get_total_state: get total number of state */
286 size_t HTS_SStreamSet_get_total_state(HTS_SStreamSet * sss);
288 /* HTS_SStreamSet_get_total_frame: get total number of frame */
289 size_t HTS_SStreamSet_get_total_frame(HTS_SStreamSet * sss);
291 /* HTS_SStreamSet_get_msd: get msd parameter */
292 double HTS_SStreamSet_get_msd(HTS_SStreamSet * sss, size_t stream_index, size_t state_index);
294 /* HTS_SStreamSet_window_size: get dynamic window size */
295 size_t HTS_SStreamSet_get_window_size(HTS_SStreamSet * sss, size_t stream_index);
297 /* HTS_SStreamSet_get_window_left_width: get left width of dynamic window */
298 int HTS_SStreamSet_get_window_left_width(HTS_SStreamSet * sss, size_t stream_index, size_t window_index);
300 /* HTS_SStreamSet_get_window_right_width: get right width of dynamic window */
301 int HTS_SStreamSet_get_window_right_width(HTS_SStreamSet * sss, size_t stream_index, size_t window_index);
303 /* HTS_SStreamSet_get_window_coefficient: get coefficient of dynamic window */
304 double HTS_SStreamSet_get_window_coefficient(HTS_SStreamSet * sss, size_t stream_index, size_t window_index, int coefficient_index);
306 /* HTS_SStreamSet_get_window_max_width: get max width of dynamic window */
307 size_t HTS_SStreamSet_get_window_max_width(HTS_SStreamSet * sss, size_t stream_index);
309 /* HTS_SStreamSet_use_gv: get GV flag */
310 HTS_Boolean HTS_SStreamSet_use_gv(HTS_SStreamSet * sss, size_t stream_index);
312 /* HTS_SStreamSet_get_duration: get state duration */
313 size_t HTS_SStreamSet_get_duration(HTS_SStreamSet * sss, size_t state_index);
315 /* HTS_SStreamSet_get_mean: get mean parameter */
316 double HTS_SStreamSet_get_mean(HTS_SStreamSet * sss, size_t stream_index, size_t state_index, size_t vector_index);
318 /* HTS_SStreamSet_set_mean: set mean parameter */
319 void HTS_SStreamSet_set_mean(HTS_SStreamSet * sss, size_t stream_index, size_t state_index, size_t vector_index, double f);
321 /* HTS_SStreamSet_get_vari: get variance parameter */
322 double HTS_SStreamSet_get_vari(HTS_SStreamSet * sss, size_t stream_index, size_t state_index, size_t vector_index);
324 /* HTS_SStreamSet_set_vari: set variance parameter */
325 void HTS_SStreamSet_set_vari(HTS_SStreamSet * sss, size_t stream_index, size_t state_index, size_t vector_index, double f);
327 /* HTS_SStreamSet_get_gv_mean: get GV mean parameter */
328 double HTS_SStreamSet_get_gv_mean(HTS_SStreamSet * sss, size_t stream_index, size_t vector_index);
330 /* HTS_SStreamSet_get_gv_mean: get GV variance parameter */
331 double HTS_SStreamSet_get_gv_vari(HTS_SStreamSet * sss, size_t stream_index, size_t vector_index);
333 /* HTS_SStreamSet_set_gv_switch: set GV switch */
334 void HTS_SStreamSet_set_gv_switch(HTS_SStreamSet * sss, size_t stream_index, size_t state_index, HTS_Boolean i);
336 /* HTS_SStreamSet_get_gv_switch: get GV switch */
337 HTS_Boolean HTS_SStreamSet_get_gv_switch(HTS_SStreamSet * sss, size_t stream_index, size_t state_index);
339 /* HTS_SStreamSet_clear: free state stream set */
340 void HTS_SStreamSet_clear(HTS_SStreamSet * sss);
342 /* pstream --------------------------------------------------------- */
344 /* check variance in finv() */
345 #define INFTY ((double) 1.0e+38)
346 #define INFTY2 ((double) 1.0e+19)
347 #define INVINF ((double) 1.0e-38)
348 #define INVINF2 ((double) 1.0e-19)
356 #define GV_MAX_ITERATION 5
358 /* HTS_PStreamSet_initialize: initialize parameter stream set */
359 void HTS_PStreamSet_initialize(HTS_PStreamSet * pss);
361 /* HTS_PStreamSet_create: parameter generation using GV weight */
362 HTS_Boolean HTS_PStreamSet_create(HTS_PStreamSet * pss, HTS_SStreamSet * sss, double *msd_threshold, double *gv_weight);
364 /* HTS_PStreamSet_get_nstream: get number of stream */
365 size_t HTS_PStreamSet_get_nstream(HTS_PStreamSet * pss);
367 /* HTS_PStreamSet_get_static_length: get features length */
368 size_t HTS_PStreamSet_get_vector_length(HTS_PStreamSet * pss, size_t stream_index);
370 /* HTS_PStreamSet_get_total_frame: get total number of frame */
371 size_t HTS_PStreamSet_get_total_frame(HTS_PStreamSet * pss);
373 /* HTS_PStreamSet_get_parameter: get parameter */
374 double HTS_PStreamSet_get_parameter(HTS_PStreamSet * pss, size_t stream_index, size_t frame_index, size_t vector_index);
376 /* HTS_PStreamSet_get_parameter_vector: get parameter vector */
377 double *HTS_PStreamSet_get_parameter_vector(HTS_PStreamSet * pss, size_t stream_index, size_t frame_index);
379 /* HTS_PStreamSet_get_msd_flag: get generated MSD flag per frame */
380 HTS_Boolean HTS_PStreamSet_get_msd_flag(HTS_PStreamSet * pss, size_t stream_index, size_t frame_index);
382 /* HTS_PStreamSet_is_msd: get MSD flag */
383 HTS_Boolean HTS_PStreamSet_is_msd(HTS_PStreamSet * pss, size_t stream_index);
385 /* HTS_PStreamSet_clear: free parameter stream set */
386 void HTS_PStreamSet_clear(HTS_PStreamSet * pss);
388 /* gstream --------------------------------------------------------- */
390 /* HTS_GStreamSet_initialize: initialize generated parameter stream set */
391 void HTS_GStreamSet_initialize(HTS_GStreamSet * gss);
393 /* HTS_GStreamSet_create: generate speech */
394 HTS_Boolean HTS_GStreamSet_create(HTS_GStreamSet * gss, HTS_PStreamSet * pss, size_t stage, HTS_Boolean use_log_gain, size_t sampling_rate, size_t fperiod, double alpha, double beta, HTS_Boolean * stop, double volume, HTS_Audio * audio);
396 /* HTS_GStreamSet_get_total_nsamples: get total number of sample */
397 size_t HTS_GStreamSet_get_total_nsamples(HTS_GStreamSet * gss);
399 /* HTS_GStreamSet_get_total_frame: get total number of frame */
400 size_t HTS_GStreamSet_get_total_frame(HTS_GStreamSet * gss);
402 /* HTS_GStreamSet_get_static_length: get features length */
403 size_t HTS_GStreamSet_get_vector_length(HTS_GStreamSet * gss, size_t stream_index);
405 /* HTS_GStreamSet_get_speech: get synthesized speech parameter */
406 double HTS_GStreamSet_get_speech(HTS_GStreamSet * gss, size_t sample_index);
408 /* HTS_GStreamSet_get_parameter: get generated parameter */
409 double HTS_GStreamSet_get_parameter(HTS_GStreamSet * gss, size_t stream_index, size_t frame_index, size_t vector_index);
411 /* HTS_GStreamSet_clear: free generated parameter stream set */
412 void HTS_GStreamSet_clear(HTS_GStreamSet * gss);
414 /* vocoder --------------------------------------------------------- */
417 #define LZERO (-1.0e+10) /* ~log(0) */
421 #define ZERO (1.0e-10) /* ~(0) */
425 #define PI 3.14159265358979323846
429 #define PI2 6.28318530717958647692
432 #define RANDMAX 32767
435 #define B0 0x00000001
436 #define B28 0x10000000
437 #define B31 0x80000000
438 #define B31_ 0x7fffffff
443 #define PADEORDER 4 /* pade order (for MLSA filter) */
444 #define IRLENG 384 /* length of impulse response */
449 #endif /* HTS_EMBEDDED */
451 #define CHECK_LSP_STABILITY_MIN 0.25
452 #define CHECK_LSP_STABILITY_NUM 4
454 /* for MGLSA filter */
455 #define NORMFLG1 TRUE
456 #define NORMFLG2 FALSE
457 #define MULGFLG1 TRUE
458 #define MULGFLG2 FALSE
461 /* HTS_Vocoder: structure for setting of vocoder */
462 typedef struct _HTS_Vocoder {
463 HTS_Boolean is_first;
464 size_t stage; /* Gamma=-1/stage: if stage=0 then Gamma=0 */
465 double gamma; /* Gamma */
466 HTS_Boolean use_log_gain; /* log gain flag (for LSP) */
467 size_t fprd; /* frame shift */
468 unsigned long next; /* temporary variable for random generator */
469 HTS_Boolean gauss; /* flag to use Gaussian noise */
470 double rate; /* sampling rate */
471 double pitch_of_curr_point; /* used in excitation generation */
472 double pitch_counter; /* used in excitation generation */
473 double pitch_inc_per_point; /* used in excitation generation */
474 double *excite_ring_buff; /* used in excitation generation */
475 size_t excite_buff_size; /* used in excitation generation */
476 size_t excite_buff_index; /* used in excitation generation */
477 unsigned char sw; /* switch used in random generator */
478 int x; /* excitation signal */
479 double *freqt_buff; /* used in freqt */
480 size_t freqt_size; /* buffer size for freqt */
481 double *spectrum2en_buff; /* used in spectrum2en */
482 size_t spectrum2en_size; /* buffer size for spectrum2en */
483 double r1, r2, s; /* used in random generator */
484 double *postfilter_buff; /* used in postfiltering */
485 size_t postfilter_size; /* buffer size for postfiltering */
486 double *c, *cc, *cinc, *d1; /* used in the MLSA/MGLSA filter */
487 double *lsp2lpc_buff; /* used in lsp2lpc */
488 size_t lsp2lpc_size; /* buffer size of lsp2lpc */
489 double *gc2gc_buff; /* used in gc2gc */
490 size_t gc2gc_size; /* buffer size for gc2gc */
493 /* HTS_Vocoder_initialize: initialize vocoder */
494 void HTS_Vocoder_initialize(HTS_Vocoder * v, size_t m, size_t stage, HTS_Boolean use_log_gain, size_t rate, size_t fperiod);
496 /* HTS_Vocoder_synthesize: pulse/noise excitation and MLSA/MGLSA filster based waveform synthesis */
497 void HTS_Vocoder_synthesize(HTS_Vocoder * v, size_t m, double lf0, double *spectrum, size_t nlpf, double *lpf, double alpha, double beta, double volume, double *rawdata, HTS_Audio * audio);
499 /* HTS_Vocoder_clear: clear vocoder */
500 void HTS_Vocoder_clear(HTS_Vocoder * v);
504 #endif /* !HTS_HIDDEN_H */