Sound insulation structure for a garment

1. A sound insulation structure for a garment, the sound insulation structure comprising:

a first layer comprising a sound absorbing material; and

a second layer attached to the first layer, the second layer configured to be at least one of sound reflecting and sound diffusing,

wherein at least one of the first layer and the second layer comprises a mesh, and

wherein the sound insulation structure forms at least a part of the garment.

2. The sound insulation structure of claim 1 , wherein the first layer and the second layer at least partially overlap.

3. The sound insulation structure of claim 1 , wherein the second layer forms an outer surface of the garment.

4. The sound insulation structure of claim 1 , further comprising a third layer configured to be sound diffusing,

wherein the second layer is configured to be sound reflecting.

5. The sound insulation structure of claim 4 , wherein the third layer forms an inner surface of the garment.

6. The sound insulation structure of claim 1 , wherein the first layer and the second layer are configured to reduce average sound loudness by 0.5 to 1 sone in the frequency range of 4,000 Hz to 8,000 Hz in portions where the first layer and the second layer overlap.

7. The sound insulation structure of claim 1 , wherein the sound insulation structure has a total thickness of less than 30 mm.

8. The sound insulation structure of claim 1 , wherein the first layer is textured on at least one surface.

9. The sound insulation structure of claim 1 , wherein the second layer is a coating.

10. The sound insulation structure of claim 1 , wherein at least one of the first layer and the second layer are removable from the sound insulation structure.

11. The sound insulation structure of claim 1 , wherein at least a portion of the sound insulation structure is configured to be part of a hood.

12. The sound insulation structure of claim 11 , wherein the hood comprises a frontal tip, and

wherein the frontal tip is configured to be disposed at a wearer's forehead.

13. The sound insulation structure of claim 11 , wherein the hood is configured to enclose at least 220° of space around a wearer's head in a horizontal plane at a center of the wearer's head.

14. The sound insulation structure of claim 11 , wherein the hood comprises a draw cord configured to tighten an opening of the hood.

15. The sound insulation structure of claim 11 , wherein the hood comprises a flap removably attached to a side of an opening of the hood, and

wherein the flap is configured to reduce an opening of the hood.

16. A garment comprising the sound insulation structure of claim 1 .

17. The garment of claim 16 , wherein the garment comprises a hood, and

wherein the sound insulation structure is disposed at the hood.

18. The garment of claim 16 , wherein the garment comprises a hat, a beanie, or a headband.

19. The garment of claim 16 , wherein the sound insulation structure is removably attached to the garment.

20. A sound insulation structure for a wearable accessory, the sound insulation structure comprising:

a first layer comprising a sound absorbing material; and

a second layer attached to the first layer, the second layer configured to be at least one of sound reflecting and sound diffusing,

wherein at least one of the first layer and the second layer are removable from the sound insulation structure, and

wherein the sound insulation structure forms at least a part of the wearable accessory.

21. A method of manufacturing a sound insulation structure for a garment, the method comprising:

providing a first layer comprising a sound absorbing material;

providing a second layer configured to be at least one of sound reflecting and sound diffusing;

molding the second layer such that the second layer is configured to diffuse sound;

joining the first layer and the second layer; and

forming at least a part of the garment with the first layer and the second layer.

22. The method of claim 21 , further comprising:

arranging the first layer and the second layer such that the first layer and the second layer at least partially overlap in the garment.

23. The method of claim 21 , further comprising:

providing a third layer configured to be sound diffusing; and

joining the third layer and the first layer,

wherein the second layer is configured to be sound reflecting.

24. The method of claim 21 , further comprising:

molding the sound absorbing material such that the sound absorbing material diffuses sound on at least one surface.

25. The method of claim 20 , wherein at least one of the first layer and the second layer comprises a mesh.

26. The method of claim 21 , wherein at least one of the first layer and the second layer comprises a mesh.