Fabric speakers
An electronic device may include a speaker having fabric portions. The fabric-based speaker may have one or more fabric support layers on which other speaker components are disposed. In particular, the fabric-based speaker may include one or more conductive patterns and one or more magnetic structures. The one or more conductive patterns may be coupled to one or more fabric support layers and may receive electric signals that actuate the one or more fabric support layers in the presence of magnetic field created by the one or more magnetic structures to produce sounds waves.
1. A speaker comprising:
a first fabric layer;
a second fabric layer overlapping the first fabric layer;
a magnetic structure supported by the second fabric layer; and
a conductive pattern that is on the first fabric layer and that overlaps the magnetic structure, wherein the conductive pattern is configured to receive electrical signals and wherein the first fabric layer is configured to move based on the electrical signals.
2. The speaker defined in claim 1 , wherein the conductive pattern comprises a conductive coil having first and second voltage terminals configured to receive the electrical signals, wherein the conductive coil is formed from one or more strands of conductive material within the first fabric layer, and wherein the magnetic structure comprises magnetic material formed within the second fabric layer.
3. The speaker defined in claim 1 , wherein the magnetic structure is disposed between the first fabric layer and the second fabric layer.
4. The speaker defined in claim 3 , wherein the conductive pattern comprises a pattern selected from the group consisting of a coil pattern, a serpentine pattern, and a pattern of parallel lines.
5. The speaker defined in claim 1 further comprising:
a third fabric layer, wherein the conductive pattern is disposed between the first fabric layer and the third fabric layer, wherein the first fabric layer overlaps the second fabric layer, and wherein the second fabric layer overlaps the third fabric layer.
6. The speaker defined in claim 1 further comprising:
a third fabric layer; and
an additional conductive pattern on the third fabric layer, wherein the second fabric layer is between the first fabric layer and the third fabric layer.
7. The speaker defined in claim 6 further comprising:
additional magnetic structures, the magnetic structure and the additional magnetic structures forming an array of magnetic structures that overlaps the conductive pattern and the additional conductive pattern.
8. The speaker defined in claim 1 , wherein the conductive pattern and the magnetic structure form a speaker unit and wherein the speaker comprises a plurality of additional speaker units each including an additional conductive pattern on the first fabric layer and an additional magnetic structure on the second fabric layer.
9. The speaker defined in claim 8 , wherein the speaker unit has a boundary with an adjacent speaker unit in the plurality of additional speaker units and wherein the first fabric layer is attached to the second fabric layer along the boundary.
10. The speaker defined in claim 1 , wherein at least one of the first and second fabric layers comprises a fabric layer formed from suede, a woven fabric portion, or a knit fabric portion.
11. A speaker comprising:
a fabric layer;
magnetic structures disposed within the fabric layer; and
conductive structures disposed within the fabric layer and configured to receive electrical signals, wherein a portion of the fabric layer in which the conductive structures are disposed is configured to move based on the electrical signals.
12. The speaker defined in claim 11 , wherein the magnetic structures comprise first and second magnets, and the conductive structures are disposed between the first and second magnets.
13. The speaker defined in claim 12 , wherein the first magnet has a first side facing the second magnet, wherein the first side of the first magnet has a first polarity, wherein the second magnet has a second side facing the first magnet, and wherein the second side of the second magnet has a second polarity opposite the first polarity.
14. The speaker defined in claim 13 , wherein the conductive structures are disposed in a first region of the fabric layer, wherein the first and second magnetic structures are disposed in second regions of the fabric layer, and wherein the first region is configured to buckle in response to audio signals received at the conductive structures.
15. The speaker defined in claim 14 , wherein the first region is a rectangular region that is flanked on opposing sides by the second regions.
16. The speaker defined in claim 14 , wherein the first region is a circular region that is surrounded by the second regions.
17. The speaker defined in claim 11 , wherein the conductive structures surround the magnetic structures.
18. A fabric-based item comprising:
a fabric support structure;
a conductive pattern on the fabric support structure having first and second terminals configured to receive electrical signals; and
a magnetic structure, wherein the conductive pattern and the fabric support structure both surround the magnetic structure and wherein the fabric support structure is configured to move based on the electrical signals.
19. The fabric-based item defined in claim 18 , wherein the fabric support structure has a tubular shape with a lateral area and an interior opening, wherein the conductive pattern extends across the lateral area, and wherein the magnetic structure is disposed within the interior opening.
20. The fabric-based item defined in claim 18 , wherein the fabric support structure comprises a plurality of fabric layers having an inner opening, wherein the magnetic structure is disposed within the inner opening, and wherein the conductive pattern comprises one or more strands of conductive material that extend through each fabric layer in the plurality of fabric layers.