Patent ID: 11922964
Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 12:
13. The non-transitory computer-readable medium according to claim 12,
wherein a convex cost term L relating to the frequency structure is defined by, L
   ⁡
   (
   
    u
    S
   
   )
  
  =
  
   
    μ
    ⁢
    
     
      
      
       Λ
       ⁢
       
        u
        S
       
      
      
     
     1
    
   
   +
   
    
     ρ
     2
    
    ⁢
    
     
      
      
       
        Λ
        ⁢
        
         u
         S
        
       
       -
       
        Λ
        ⁢
        
         
          φ
          ^
         
         S
        
       
      
      
     
     2
     2
    
   
  
 

where μ, ρ(∈R+) are weighting coefficients, Λ(∈RΩ×Ω) is a predetermined sparse matrix, and Ω is a count of frequency bands.