Audio device with a stiffening structure

1. An apparatus, comprising:

a first portion on which one or more components of the apparatus may be located, the first portion comprising two opposing long side edges and two opposing short side edges, and having at least one first wall, at least one second wall, and at least one, third wall protruding from the first portion;

a piezoelectric actuator located on the first portion adjacent to the at least one first wall and adjacent to the at least one second wall; and

a movable section configured to be actuated by the piezoelectric actuator;

wherein at least the first portion and the movable section define a speaker;

wherein the at least one first wall extends perpendicularly to the two opposing long side edges from a first point between opposing ends of a first of the two opposing long side edges across the first portion to a second point between opposing ends of a second of the two opposing long side edges, wherein the at least one second wall extends substantially perpendicularly to the two opposing short side edges from a first point between opposing ends of a first of the two opposing short sides across the first portion to the first wall, wherein the at least one third wall extends substantially perpendicularly to the two opposing short side edges from a first point between opposing ends of a second of the two opposing short sides across the first portion to the first wall, and wherein the at least one second wall and the at least one third wall are not aligned;

wherein the at least one first wall is configured to at least one of

facilitate one or more of enhancing a low frequency response of sound output from the movable section and smoothing a high frequency response of sound output from the movable section and

inhibit a variation in at least one of the low frequency response and the high frequency response by user contact on at least the two opposing long side edges; and

wherein the at least one second wall and the at least one third wall are configured to inhibit resonance in the first portion and attenuate vibrations in the movable section.

2. The apparatus of claim 1 , further comprising a front window over the movable section and through which a user can interact with the apparatus.

3. The apparatus of claim 1 , wherein the movable section comprises an organic light emitting diode display.

4. The apparatus of claim 1 , further comprising a flexible suspension between at least a portion of a peripheral edge of the movable section and a second portion of the apparatus.

5. The apparatus of claim 1 , further comprising an echo cancellation tape between the movable section and the first portion.

6. The apparatus of claim 1 , further comprising a shield plate mounted within the first portion and integral with the at least one first wall.

7. The apparatus of claim 1 , wherein the first portion is fabricated from one or more of aluminum, aluminum alloy, stainless steel, magnesium, magnesium alloy, titanium, titanium alloy, carbon fiber composite, and ceramic.

8. The apparatus of claim 1 , wherein the piezoelectric actuator is configured to generate a force of 0.2 N to 1 N directed to the movable section.

9. The apparatus of claim 1 , wherein the piezoelectric actuator is centrally located in an upper half of the first portion.

10. The apparatus of claim 1 , wherein the at least one first wall is configured to direct audio signals within the first portion.

11. The apparatus of claim 10 , wherein the configuration to direct audio signals within the first portion contributes to flattening of a frequency response.

12. The apparatus of claim 1 , wherein a space is defined between a top surface of the at least one first wall and a back cover located on a back of the first portion.

13. The apparatus of claim 1 , wherein a height of the at least one wall is variable over a length of the at least one first wall.

14. The apparatus of claim 1 , wherein the at least one first wall is configured to improve a low frequency response of an audio output, and wherein the at least one second wall is configured to improve a high frequency response of the audio output.

15. A method, comprising:

inputting data into a movable section of a mobile device;

causing the operation of a controller having a memory and a processor;

communicating with a means for receiving a downlink audio signal; and

providing the downlink audio signal through a first portion of the mobile device on which one or more components may be located, the first portion comprising two opposing long side edges and two opposing short side edges and having at least one first wall, at least one second wall, and at least one third wall;

wherein the at least one first wall extends perpendicularly to the two opposing long side edges from a first point between opposing ends of a first of the two opposing long side edges across the first portion to a second point between opposing ends of a second of the two opposing long side edges, wherein the at least one second wall extends substantially perpendicularly to the two opposing short side edges from a first point between opposing ends of a first of the two opposing short sides across the first portion to the first wall, wherein the at least one third wall extends substantially perpendicularly to the two opposing short side edges from a first point between opposing ends of a second of the two opposing short sides across the first portion to the first wall, and wherein the at least one second wall and the at least one third wall are not aligned;

wherein the at least one first wall is configured to at least one of

facilitate one or more of enhancing a low frequency response of sound output from the movable section and smoothing a high frequency response of sound output from the movable section; and

inhibit a variation in at least one of the low frequency response and the high frequency response by user contact on at least the two opposing long side edges; and

wherein the at least one second wall and the at least one third wall are configured to inhibit resonance in the first portion and attenuate vibrations in the movable section.

16. The method of claim 15 , further comprising processing the downlink audio signal prior to providing the downlink audio signal through the at least one first wall to the movable section.

17. The method of claim 16 , wherein the movable section of the mobile device may define a portion of a panel speaker.