Patent ID: 11869520
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 9:
10. The computer program product of claim 7, wherein the LPC parameter is an LPC coefficient from encoding using an LPC technology, and wherein a z-domain transfer function of the pole-zero filter is based on the following formula:, H
     s
    
    (
    z
    )
   
   =
   
    
     1
     -
     
      
       a
       1
      
      ⁢
      β
      ⁢
      
       z
       
        -
        1
       
      
     
     -
     
      
       a
       2
      
      ⁢
      
       β
       2
      
      ⁢
      
       z
       
        -
        2
       
      
     
     -
     …
     -
     
      
       a
       M
      
      ⁢
      
       β
       M
      
      ⁢
      
       z
       
        -
        M
       
      
     
    
    
     1
     -
     
      
       a
       1
      
      ⁢
      γ
      ⁢
      
       z
       
        -
        1
       
      
     
     -
     
      
       a
       2
      
      ⁢
      
       γ
       2
      
      ⁢
      
       z
       
        -
        2
       
      
     
     -
     …
     -
     
      
       a
       M
      
      ⁢
      
       γ
       M
      
      ⁢
      
       z
       
        -
        M
       
      
     
    
   
  
  ,
 

wherein a1, a2, . . . aM is the LPC coefficient,
wherein M represents a quantity of the LPC coefficient, and
wherein β and γ satisfy a condition 0<β<γ<1.