Method for reducing distortion in a receiver
View Patent ↗A receiver, such as for use in a hearing aid, is disclosed. The receiver comprises a housing and a diaphragm assembly disposed within the housing. The diaphragm assembly acoustically divides the housing into a front volume and a back volume. The diaphragm assembly comprises a paddle having a perimeter, a flexible annulus connected to the paddle, and a diaphragm support, wherein the diaphragm support secures the perimeter of the annulus to the housing. The receiver further comprises a plurality of apertures in the diaphragm assembly, wherein the plurality of apertures provides an acoustic distortion of no greater than 2% THD.
1. A receiver comprising:
a housing;
a diaphragm assembly disposed within the housing, the diaphragm assembly acoustically dividing the housing into a front volume and a back volume, the diaphragm assembly comprising:
a paddle having a perimeter;
a flexible annulus connected to the paddle; and,
a diaphragm support, wherein the diaphragm support secures the perimeter of the annulus to the housing; and,
a plurality of apertures in the diaphragm assembly, wherein the plurality of apertures provides an acoustic distortion of no greater than 2% THD.
2. The receiver of claim 1 , wherein the plurality of apertures in the diaphragm comprises at least 35 apertures.
3. The receiver of claim 1 , wherein each of the plurality of apertures has a predetermined diameter between 0.001 inches and 0.0007 inches.
4. The receiver of claim 1 , wherein the plurality of apertures are disposed in the flexible annulus.
5. The receiver of claim 1 , wherein the plurality of apertures are disposed in the diaphragm support.
6. The receiver of claim 1 , wherein the paddle includes a through-hole and wherein the plurality of apertures are disposed within the through-hole.
7. A receiver comprising:
a housing;
a diaphragm assembly disposed within the housing, the diaphragm assembly acoustically dividing the housing into a front volume and a back volume, the diaphragm assembly comprising:
a paddle having a perimeter;
a flexible annulus connected to the paddle; and,
a diaphragm support, wherein the diaphragm support secures the perimeter of the annulus to the housing; and,
a plurality of apertures in the diaphragm assembly, wherein each of the plurality of apertures has a predetermined diameter and wherein the apertures are sufficiently large in quantity and sufficiently small in diameter to provide an acoustic distortion of no greater than 2% THD.
8. The receiver of claim 7 , wherein the plurality of apertures in the diaphragm comprises at least 35 apertures.
9. The receiver of claim 8 , wherein the diameter of each of the plurality of apertures is no greater than 0.0007 inches.
10. The receiver of claim 8 , wherein the diameter of each of the plurality of apertures is between 0.001 inches and 0.0007 inches.
11. The receiver of claim 7 , wherein the plurality of apertures are disposed in the flexible annulus.
12. The receiver of claim 7 , wherein the plurality of apertures are disposed in the diaphragm support.
13. The receiver of claim 7 , wherein the paddle includes a through-hole and wherein the plurality of apertures are disposed within the through-hole.
14. A receiver comprising:
a housing;
a diaphragm assembly disposed within the housing, the diaphragm assembly acoustically dividing the housing into a front volume and a back volume, the diaphragm assembly comprising:
a paddle having a perimeter;
a flexible annulus connected to the paddle; and,
a diaphragm support, wherein the diaphragm support secures the perimeter of the annulus to the housing; and,
a plurality of apertures in the diaphragm assembly, wherein the plurality of apertures provides an acoustic distortion of no greater than 2% THD and each of the plurality of apertures has a predetermined diameter of no greater than 0.0007 inches.
15. The receiver of claim 14 , wherein the plurality of apertures in the diaphragm comprises at least 35 apertures.
16. The receiver of claim 14 , wherein the plurality of apertures are disposed in the flexible annulus.
17. The receiver of claim 14 , wherein the plurality of apertures are disposed in the diaphragm support.
18. The receiver of claim 14 , wherein the paddle includes a through-hole and wherein the plurality of apertures are disposed within the through-hole.
19. A receiver comprising:
a housing;
a diaphragm assembly disposed within the housing, the diaphragm assembly acoustically dividing the housing into a front volume and a back volume, the diaphragm assembly comprising:
a paddle having a perimeter;
a flexible annulus connected to the paddle; and,
a diaphragm support, wherein the diaphragm support secures the perimeter of the annulus to the housing; and
a plurality of apertures in the diaphragm assembly, wherein each of the plurality of apertures has a diameter less than 0.001 inches whereby the plurality of apertures provides a decrease in acoustic distortion.
20. The receiver of claim 19 , wherein each aperture of the plurality of apertures has a diameter of at least 0.0007 inches.
21. The receiver of claim 19 , wherein each aperture of the plurality of apertures has a diameter of at most 0.0007 inches.
22. The receiver of claim 19 , wherein each aperture of the plurality of apertures has a diameter of at most 0.00075 inches.
23. The receiver of claim 19 , wherein the plurality of apertures in the diaphragm comprises at least 35 apertures.
24. A receiver comprising:
a housing;
a diaphragm assembly disposed within the housing, the diaphragm assembly acoustically dividing the housing into a front volume and a back volume, the diaphragm assembly comprising:
a paddle having a perimeter;
a flexible annulus connected to the paddle; and
a diaphragm support, wherein the diaphragm support secures the perimeter of the annulus to the housing; and,
at least 35 apertures in the diaphragm assembly, whereby the at least 35 apertures provide a decrease in acoustic distortion.
25. The receiver of claim 24 , wherein each aperture of the at least 35 apertures has a diameter less than 0.001 inches.
26. The receiver of claim 25 , wherein each aperture of the at least 35 apertures has a diameter of at least 0.0007 inches.
27. The receiver of claim 25 , wherein each aperture of the at least 35 apertures has a diameter of at most 0.0007 inches.
28. The receiver of claim 25 , wherein each aperture of the at least 35 apertures has a diameter of at most 0.00075 inches.