Patent ID: 11902742
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Measurement (Instruments)
Classification: CPC H  G | IPC G  H

Claim 11:
12. The microphone chip according to claim 1, wherein the microphone chip comprises two optical emitters including the optical emitter, and wavelengths of light emitted by the two optical emitters are respectively λ1 and λ2, wherein λ satisfies λ=, λ
   =
   
    
     
      λ
      1
     
     ×
     
      λ
      2
     
    
    
     
      ❘
      "\[LeftBracketingBar]"
     
     
      
       λ
       1
      
      -
      
       λ
       2
      
     
     
      ❘
      "\[RightBracketingBar]"
     
    
   
  
  .