Patent ID: 11862180
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 10:
11. The method of claim 1 wherein frame energy of each of the first frame energy and the second frame energy is determined in accordance with, E_w
      oold
    
    =
    
      E_w
      old
    
  

  
    
      E_w
      old
    
    =
    
      
        ∑
        
          n
          =
          0
        
        
          
            L
            prot
          
          -
          1
        
      
      ⁢
      
        
          (
          
            
              
                w
                whr
              
              ⁡
              
                (
                n
                )
              
            
            ·
            
              
                x
                prev
              
              ⁡
              
                (
                n
                )
              
            
          
          )
        
        2, where E_woold is a previous frame energy, E_wold is the frame energy of the first frame being calculated or the second frame being calculated, wwhr is a long FFT spectral analysis window, xprev is a time domain prototype signal used to create a substitution for a potentially upcoming lost frame, and Lprot is a number of samples in the xprev signal.