Active Acoustic Meta Material Loudspeaker System and the Process to Make the Same
First Claim
1. A speaker comprising:
- a diaphragm directing sound transverse to a plane of said diaphragm;
a torus of material surrounding said transverse direction of said sound;
said torus of material further comprising;
at least one layer of a micro-perforated sheet;
at least one layer of insulation;
a plurality of spaced apart transducers on an external side of said torus outputting pressure waves through said at least one micro-perforated sheet.
1 Assignment
0 Petitions
Accused Products
Abstract
An active acoustic meta material system with micro-perforated sheets embedded between porous layers and air gaps, around the output region in front of a speaker, perpendicular to the direction of wave propagation of the sound is disclosed. Sound input is split into two frequency ranges by an active controller, such that a higher frequency range is sent to a traditional speaker which outputs sound via a diaphragm which vibrates in response to electromagnetic signals generated based on the sound input. The sound waves in the lower frequency range are sent to piezoelectric or other type of motion-creating transducers which are mounted to an outer housing or casing containing a plurality of meta material sheets with insulative layers between each meta materiel sheet. The combination of meta material sheets and insulation layers are calibrated to focus and amplify the vibrational waves which are outputted by the transducers.
18 Citations
17 Claims
-
1. A speaker comprising:
-
a diaphragm directing sound transverse to a plane of said diaphragm; a torus of material surrounding said transverse direction of said sound; said torus of material further comprising; at least one layer of a micro-perforated sheet; at least one layer of insulation; a plurality of spaced apart transducers on an external side of said torus outputting pressure waves through said at least one micro-perforated sheet. - View Dependent Claims (5, 6, 7, 8)
-
-
2. The speaker of claim 2, wherein higher frequency sound is outputted through said diaphragm and lower frequency sound, compared to said higher frequency sound, is directed to said transducers.
-
3. The speaker of claim 3, wherein said lower frequency sound is pushed transverse to said plane of said diaphragm by said higher frequency sound.
-
4. The speaker of claim 4, wherein lower frequency sound and said higher frequency sound join to create waves with higher amplification across an entire frequency spectrum of output of said speaker.
-
9. A sound output system, comprising:
-
a frequency divider which sends higher frequencies to a speaker with diaphragm and comparatively lower frequencies to transducers which generate pressure waves; alternating micro-perforated sheets and insulation material situated in front of said transducers; wherein said micro-perforated sheets and insulation in combination have an impedance matched with said pressure waves and an ambient medium generated by said transducers causing amplification thereof. - View Dependent Claims (10, 11, 12, 13)
-
-
14. A speaker arrangement comprising:
-
a speaker oriented such that sound is directed substantially in a first cardinal direction; micro-perforated sheets oriented with individual sheets transverse to said first cardinal direction; a portal surrounded by said micro-perforated sheets open to said speaker such that a majority of said sound passes through said portal when said speaker emits sound. - View Dependent Claims (15, 16, 17)
-
Specification