Patent Publication Number: US-2007116313-A1

Title: Electro-acoustic Sound Diffuser

Description:
FIELD OF THE INVENTION  
      1. This invention relates to musical instrument electro-acoustic transducers, their enclosures and related elements.  
     BACKGROUND OF THE INVENTION AND RELATED ART  
      1. The *Electro-acoustic Sound Diffuser relates to a physical method of modifying, altering, coloring, a nominally normal audio signal propelled by audible energy generated by at least one electro-acoustic transducer receiving an input signal.  
      The Electro-acoustic Sound Diffuser produces a unique sound unlike any other. It is also a visual experience to an onlooker.  
      The Baffle ( 4 ) fitted with Perforations ( 5 ) is driven directly by an electric motor ( 6 ) which is hidden between the baffle ( 4 ) and loudspeaker driver ( 2 ) said motor ( 6 ) fixed to the enclosure ( 10 ) by means of a frame ( 8 ) and connecting apparatus, is capable of rotating the baffle ( 4 ). The speed of the electric motor ( 6 ) is controlled by an electric motor speed control ( 12 ) fixed to the Enclosure ( 10 ) and connected by internal wiring ( 24 ) or remotely connected by means of a removable cable ( 22 ).  
      A signal from instrument or apparatus to amplifier, input to the * sound diffuser at the required impedance and voltage to the loudspeaker driver propels airborne sound waves towards the baffle ( 4 ).  
      When the baffle ( 4 ) is in a fixed position the *Sound Diffuser functions as an altered close field omnipresent loudspeaker. Sound energy is diffused into the air and baffle ( 4 ) which resonates producing harmonics and the altered sound also makes its way through arranged perforations ( 5 ). When the baffle ( 4 ) is set into rotation mode the sound waves are sliced by protected edges beared by perforations in the Baffle ( 4 ). The baffle ( 4 ) adds harmonics and chorusing effect which are proliferated by rotation. Frequencies from approximately 65 Hz to 20 khz are experienced.  
      4. Model (A3) Baffle is a modified wheel cover ( 5 ).  
      References Cited: 
      CA1120972 Marshall, Claude J., Jr. Mar. 28, 1979 
 
 We have modified the wheel cover from its original state as claimed in  6 . model A3. The baffle has been tuned and balanced with extra baffle elements within to achieve a required sound. 
   

      The Electro-acoustic Sound Diffuser is designed mainly for use as an alternative musical instrument loudspeaker and may also be used for microphone or other compatible input device with a view of intent to color the original sound.  
      Disclosed variations of this invention do not limit the boundries of undisclosed variations for the future life of this file.  
    
    
     LIST OF DRAWINGS  
       FIG. 1 . Representative perspective drawing.  
       FIG. 2 . Front View.  
       FIG. 3 . Section Drawing.  
       FIG. 4 . Front View model A2.  
     LIST OF PHOTOGRAPHS  
       FIG. 5 . Photo of working prototype of model A3.  
       FIG. 6 . Front View Model A1 (Photo)  
       FIG. 7 . Model A1 Perspective (Photo) Baffle Housing and Grill Removed  
       FIG. 8 . (Model A1) Baffle and Baffle Housing Inside Detail (Photo)  
       FIG. 9 . Model A1 (Photo) Side View Perspective  
       FIG. 10 . Back View (Photo) 
    
    
     ELEMENTS AND CORRESPONDING NUMBER  
       2 . Loudspeaker driver  
       3 . Soldiers  
       4 . Baffle  
       5 . Perforations  
       6 . Electric Motor  
       7 . Axle  
       8 . Frame  
       9 . Model A Loudspeaker Baffle  
       10 . Enclosure  
       11 . Model A1 Baffle Housing  
       12 . Speed Control  
       13 . Baffle to Motor Mount  
       14 . Speaker Signal Supply Wire  
       15 . Motor axle Mount Bracket  
       16 . Folded bass reflex horn  
       17 . Grill  
       18 . Input Jack  
       19 . Baffle Assembly to Baffle Housing Mount  
       20 . Handle  
       21 . Balance Weight  
       22 . Cable for Electric Motor remote control  
       24 . Motor Power Supply Wire  
       25 . Speed Control Cover