frame4pcm.m

该代码实现了am

   if  (XX40(1,1)>=0) & (XX40(1,1)<=5000)      
                                     audio(1,222)=0;                          % 1
                                     audio(1,223)=0;
                                     audio(1,224)=0;
                                     
                      elseif    (XX40(1,1)>=5001) & (XX40(1,1)<=10000)  
                                     audio(1,222)=1;                          % 2
                                     audio(1,223)=0;
                                     audio(1,224)=0;
                                     
                       elseif     (XX40(1,1)>=10001) & (XX40(1,1)<=15000) 
                                     audio(1,222)=0;                          % 3
                                     audio(1,223)=1;
                                     audio(1,224)=0;
                                     
                      elseif    (XX40(1,1)>=15001) & (XX40(1,1)<=20000)
                                     audio(1,222)=1;                          % 4
                                     audio(1,223)=1;
                                     audio(1,224)=0;
                                     
                      elseif    (XX40(1,1)>=20001) & (XX40(1,1)<=25000)
                                     audio(1,222)=0;                          % 5
                                     audio(1,223)=0;
                                     audio(1,224)=1;
                                     
                     elseif   (XX40(1,1)>=25001) & (XX40(1,1)<=30000)    
                                     audio(1,222)=1;                          % 6
                                     audio(1,223)=0;
                                     audio(1,224)=1;
                                     
                    elseif      (XX40(1,1)>=30000) & (XX40(1,1)<=35000)   
                                     audio(1,222)=0;                          % 7
                                     audio(1,223)=1;
                                     audio(1,224)=1;
                                     
                      elseif    (XX40(1,1)>=35000) & (XX40(1,1)<=40000)   
                                     audio(1,222)=1;                          % 8
                                     audio(1,223)=1;
                                     audio(1,224)=1;
                      
                         end                                               %  222到224 bits 第四帧脉冲1
                         
                         
                           if  (XX40(1,2)>=0) & (XX40(1,2)<=5000)      
                                     audio(1,225)=0;                          % 1
                                     audio(1,226)=0;
                                     audio(1,227)=0;
                                     
                      elseif    (XX40(1,2)>=5001) & (XX40(1,2)<=10000)  
                                     audio(1,225)=1;                          % 2
                                     audio(1,226)=0;
                                     audio(1,227)=0;
                                     
                       elseif     (XX40(1,2)>=10001) & (XX40(1,2)<=15000) 
                                     audio(1,225)=0;                          % 3
                                     audio(1,226)=1;
                                     audio(1,227)=0;
                                     
                      elseif    (XX40(1,2)>=15001) & (XX40(1,2)<=20000)
                                     audio(1,225)=1;                          % 4
                                     audio(1,226)=1;
                                     audio(1,227)=0;
                                     
                      elseif    (XX40(1,1)>=20001) & (XX40(1,1)<=25000)
                                     audio(1,225)=0;                          % 5
                                     audio(1,226)=0;
                                     audio(1,227)=1;
                                     
                     elseif   (XX40(1,2)>=25001) & (XX40(1,2)<=30000)    
                                     audio(1,225)=1;                          % 6
                                     audio(1,226)=0;
                                     audio(1,227)=1;
                                     
                    elseif      (XX40(1,2)>=30000) & (XX40(1,2)<=35000)   
                                     audio(1,225)=0;                          % 7
                                     audio(1,226)=1;
                                     audio(1,227)=1;
                                     
                      elseif    (XX40(1,2)>=35000) & (XX40(1,2)<=40000)   
                                     audio(1,225)=1;                          % 8
                                     audio(1,226)=1;
                                     audio(1,227)=1;
                      
                         end                                               %  225到227 bits 第四帧脉冲2
                         
                         
                           if  (XX40(1,3)>=0) & (XX40(1,3)<=5000)      
                                     audio(1,228)=0;                          % 1
                                     audio(1,229)=0;
                                     audio(1,230)=0;
                                     
                      elseif    (XX40(1,3)>=5001) & (XX40(1,3)<=10000)  
                                     audio(1,228)=1;                          % 2
                                     audio(1,229)=0;
                                     audio(1,230)=0;
                                     
                       elseif     (XX40(1,3)>=10001) & (XX40(1,3)<=15000) 
                                     audio(1,228)=0;                          % 3
                                     audio(1,229)=1;
                                     audio(1,230)=0;
                                     
                      elseif    (XX40(1,3)>=15001) & (XX40(1,3)<=20000)
                                     audio(1,228)=1;                          % 4
                                     audio(1,229)=1;
                                     audio(1,230)=0;
                                     
                      elseif    (XX40(1,3)>=20001) & (XX40(1,3)<=25000)
                                     audio(1,228)=0;                          % 5
                                     audio(1,229)=0;
                                     audio(1,230)=1;
                                     
                     elseif   (XX40(1,3)>=25001) & (XX40(1,3)<=30000)    
                                     audio(1,228)=1;                          % 6
                                     audio(1,229)=0;
                                     audio(1,230)=1;
                                     
                    elseif      (XX40(1,3)>=30000) & (XX40(1,3)<=35000)   
                                     audio(1,228)=0;                          % 7
                                     audio(1,229)=1;
                                     audio(1,230)=1;
                                     
                      elseif    (XX40(1,3)>=35000) & (XX40(1,3)<=40000)   
                                     audio(1,228)=1;                          % 8
                                     audio(1,229)=1;
                                     audio(1,230)=1;
                      
                         end                                               %  228到230 bits 第四帧脉冲3
                         
                         
                          if  (XX40(1,4)>=0) & (XX40(1,4)<=5000)      
                                     audio(1,231)=0;                          % 1
                                     audio(1,232)=0;
                                     audio(1,233)=0;
                                     
                      elseif    (XX40(1,4)>=5001) & (XX40(1,4)<=10000)  
                                     audio(1,231)=1;                          % 2
                                     audio(1,232)=0;
                                     audio(1,233)=0;
                                     
                       elseif     (XX40(1,4)>=10001) & (XX40(1,4)<=15000) 
                                     audio(1,231)=0;                          % 3
                                     audio(1,232)=1;
                                     audio(1,233)=0;
                                     
                      elseif    (XX40(1,4)>=15001) & (XX40(1,4)<=20000)
                                     audio(1,231)=1;                          % 4
                                     audio(1,232)=1;
                                     audio(1,233)=0;
                                     
                      elseif    (XX40(1,4)>=20001) & (XX40(1,4)<=25000)
                                     audio(1,231)=0;                          % 5
                                     audio(1,232)=0;
                                     audio(1,233)=1;
                                     
                     elseif   (XX40(1,4)>=25001) & (XX40(1,4)<=30000)    
                                     audio(1,231)=1;                          % 6
                                     audio(1,232)=0;
                                     audio(1,233)=1;
                                     
                    elseif      (XX40(1,4)>=30000) & (XX40(1,4)<=35000)   
                                     audio(1,231)=0;                          % 7
                                     audio(1,232)=1;
                                     audio(1,233)=1;
                                     
                      elseif    (XX40(1,4)>=35000) & (XX40(1,4)<=40000)   
                                     audio(1,231)=1;                          % 8
                                     audio(1,232)=1;
                                     audio(1,233)=1;
                      
                         end                                               %  231到233 bits 第四帧脉冲4
                          
                         
                          if  (XX40(1,5)>=0) & (XX40(1,5)<=5000)      
                                     audio(1,234)=0;                          % 1
                                     audio(1,235)=0;
                                     audio(1,236)=0;
                                     
                      elseif    (XX40(1,5)>=5001) & (XX40(1,5)<=10000)  
                                     audio(1,234)=1;                          % 2
                                     audio(1,235)=0;
                                     audio(1,236)=0;
                                     
                       elseif     (XX40(1,5)>=10001) & (XX40(1,5)<=15000) 
                                     audio(1,234)=0;                          % 3
                                     audio(1,235)=1;