dtn_question_0.cc

这是处理语音信号的程序

// file: dtn_question_0.cc
//

// system include files
//
#include <string.h>

// isip include files
//
#include "dt_node.h"
#include "dt_node_constants.h"

// method: ask_question_cc
//
// arguments:
//   Question* question : (input) question to ask
//   int_4 staet_index  : (input) global state index
//   Hash_table* answer : (input) Hash_table with all the answer
//   int_4** l_context  : (input) left context list
//   int_4** r_context  : (input) right context list

// return: a logical_1 inidicating if the answer is yes or no
//
// this method asks a question for a state
//
logical_1 Dt_node::ask_question_cc(Question* question_a, int_4 state_index_a,
				   Hash_table* answer_a, int_4** l_context_a,
				   int_4** r_context_a) {

  // local variables
  //
  char_1* key_string = new char_1[ISIP_MAX_STRING_LENGTH];
  logical_1 tag_left;
  int_4 num;
  char_1* attribute;
  int_4 phn;
  char_1* dire= new char_1[2];
  
  num = question_a->get_num_cc();
  attribute = question_a->get_attribute_cc();
  tag_left = question_a->get_direction_cc();  
  
  if(tag_left==ISIP_TRUE) {
    phn = l_context_a[state_index_a][num];
    strcpy((char*)dire, "L");  
  }
  
  else{
    phn = r_context_a[state_index_a][num];
    strcpy((char*)dire, "R");  
  }

  // create the key string
  // 
  sprintf((char*)key_string, "%ld", phn);
  strcat((char*)key_string, " ");
  strcat((char*)key_string, (char*)dire);
  strcat((char*)key_string, " ");
  strcat((char*)key_string, (char*)attribute);
  
  // loop up the answer
  //
  if((answer_a->hash_lookup_cc(key_string))==(Hash_cell*)NULL) {
    
    // free memory
    //
    delete [] key_string;
    delete [] dire;
    
    // exit gracefully with the answer no
    //
    return ISIP_FALSE;
    
  }
  
  // free memory
  //
  delete [] key_string;
  delete [] dire;

  // exit gracefully with the answer yes
  //
  return ISIP_TRUE;
}