Patent ID: 11931199
Assignee: nan
Field: Other consumer goods (Other fields)
Classification: CPC A  G | IPC A  B  F  G

Claim 2:
3. A brokenly-cascaded waveguiding sound-booster [2.A40] comprising a broken through-hole tunnel-waveguide formed by an in-line arranged brokenly-cascaded array of a multiplicity of the divergent horn sound-boosters of claim 2; the brokenly-cascaded waveguiding sound-booster has:
a broken corpus, broken by at least one open space, and
the divergent horn sound-boosters, indicated by index n enumerated from 1 to N, wherein N is defined as at least 2;, wherein each n-th divergent horn sound-booster comprises:
an open sound-inlet having a sound-inlet cross-sectional area of AIN,n;
an open sound-outlet having a sound-outlet cross-sectional area of AOU,n; a condition AOU,n>AIN,n is satisfied; and
a varying cross-sectional area, varying along the canal length thereby forming a shaped through-hole tunnel-waveguide being divergent and characterized by a cross-sectional area profile function An(x);, wherein:
a cross-sectional area profile broken function of the waveguiding sound-booster as a whole is a piecewise-broken-with-intervals piecewise-divergent cross-sectional area profile function ABROKEN(x) comprising portions An(x), n=1, 2, . . . , N, associated with the n-th divergent horn sound-boosters, correspondingly, wherein the n-th cross-sectional area profile function An(x) is expressed as:, A
     n
    
    (
    x
    )
   
   =
   
    
     
      A
      
       IN
       ,
       n
      
     
     
      
       M
       n
      
      (
      x
      )
     
    
    ⁢
    
     
      (
      
       
        2
        +
        
         
          γ
          ⁡
          (
          
           
            M
            n
           
           (
           x
           )
          
          )
         
         2
        
       
       
        2
        +
        γ
       
      
      )
     
     
      
       γ
       +
       1
      
      
       2
       ⁢
       
        (
        
         γ
         -
         1
        
        )
       
      
     
    
   
  
  ,
  

  
   
    x
    
     a
     ,
     n
    
   
   <
   x
   <
   
    x
    
     b
     ,
     n
    
   
  
  ,
  

  
   n
   =
   1
  
  ,
  2
  ,
  …
     
  ,
  N
  ,
 

where xa,n and xb,n are x-coordinates of the open sound-inlet and open sound-outlet, correspondingly, of the n-th divergent horn, and Mn(x) is an n-th monotonically-increasing gradually-smooth function of x representing an M-velocity profile of the fluid tiny portion moving within and through the n-th divergent horn; and
the N divergent horn sound-boosters are arranged sequentially one after another with intervals of open space such that a portion of the propagating sound sequentially:
enters the open sound-inlet of each n-th divergent horn sound-booster,
propagates within the n-th divergent horn sound-booster,
reaches the open sound-outlet of the n-th divergent horn sound-booster,
becomes launched from the open sound-outlet of the n-th divergent horn sound-booster,
while n<N, enters the interval of open space between the n-th and (n+1)-th divergent horn sound-boosters, and
when n=N, becomes a resulting acoustic beam launched from the open sound-outlet of the N-th divergent horn sound-booster and characterized by an increased intensity manifested as boosted sound loudness.