Patent ID: 11894007
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 6:
7. The method of claim 6, further comprising calculating each normalized pitch correlation according to:, R
      ⁡
      
        (
        P
        )
      
    
    =
    
      
        
          ∑
          n
        
        ⁢
        
          
            
              s
              w
            
            ⁡
            
              (
              n
              )
            
          
          ·
          
            
              s
              w
            
            ⁡
            
              (
              
                n
                -
                P
              
              )
            
          
        
      
      
        
          
            ∑
            n
          
          ⁢
          
            
              
                
                
                  
                    s
                    w
                  
                  ⁡
                  
                    (
                    n
                    )
                  
                
                
              
              2
            
            ·
            
              
                ∑
                n
              
              ⁢
              
                
                  
                  
                    
                      s
                      w
                    
                    ⁡
                    
                      (
                      
                        n
                        -
                        P
                      
                      )
                    
                  
                  
                
                2
              
            
          
        
      
    
  
  ,

wherein R(P) is the normalized pitch correlation, wherein P is a pitch, and wherein sw(n) is a weighted speech signal.