Mobile device acoustic divider

Patent metadata

Field	Value
Publication number	US-9762997-B2
Application number	US-201514975171-A
Country	US
Kind code	B2
Filing date	Dec 18, 2015
Priority date	Sep 8, 2015
Publication date	Sep 12, 2017
Grant date	Sep 12, 2017

Abstract

A mobile communication device having an acoustic divider for minimizing acoustic coupling is disclosed. The mobile communication device includes a housing having an outer surface and internal sidewalls. The outer surface and internal sidewalls define a void disposed at and below the outer surface of the housing. The mobile communication device includes a receiver disposed within the housing and below a first portion of the void, and a microphone disposed within the housing and below a second portion of the void. An acoustic divider is disposed within the void and laterally disposed between the receiver and the microphone. The acoustic divider acoustically isolates the first and second portions of the void, thereby minimizing acoustic coupling between the receiver and the microphone.

First claim

What is claimed is:

1. A mobile communication device comprising:
a housing having an outer surface and internal sidewalls, wherein the outer surface and internal sidewalls define a void disposed at and below the outer surface of the housing;
a receiver disposed within the housing and below a first portion of the void, the receiver configured to emit sound into the void;
a microphone disposed within the housing and below a second portion of the void, the microphone configured to detect sound present in the void; and
an acoustic divider disposed within the void and laterally disposed between the receiver and the microphone, the acoustic divider acoustically isolating the first and second portions of the void.

2. The mobile communication device of claim 1 , wherein the acoustic divider is in a shape of a triangular prism.

3. The mobile communication device of claim 1 , wherein the acoustic divider comprises a sound-reflective material.

4. The mobile communication device of claim 3 , wherein the acoustic divider comprises silicone.

5. The mobile communication device of claim 1 , wherein the acoustic divider is a portion of the housing.

6. The mobile communication device of claim 1 , wherein the acoustic divider is coupled to the housing.

7. The mobile communication device of claim 6 , wherein the acoustic divider is coupled to the housing with an adhesive or a mechanical fastener.

8. The mobile communication device of claim 1 , further comprising a mesh disposed near the outer surface of the housing, wherein the mesh encloses the void.

9. The mobile communication device of claim 8 , wherein the mesh comprises a plurality of apertures configured to prevent debris from entering the void while permitting sound to exit and enter the void.

10. The mobile communication device of claim 8 , wherein the acoustic divider has a peak that is disposed proximate to the mesh.

11. The mobile communication device of claim 10 , wherein a height of the acoustic divider is substantially the same as a height of the void.

12. The mobile communication device of claim 1 , wherein the housing comprises comprising an acoustic channel disposed between the receiver and the void, the acoustic channel configured to guide sound emitted by the receiver into the void.

13. The mobile communication device of claim 12 , wherein the housing further comprises an acoustic sealing boot disposed around the acoustic channel.

14. The mobile communication device of claim 13 , wherein the acoustic sealing boot comprises the acoustic divider.

15. A mobile communication device comprising:
a housing having an outer surface and internal sidewalls, wherein the outer surface and internal sidewalls define a void disposed at and below the outer surface of the housing;
a receiver disposed within the housing and below a first portion of the void, the receiver configured to emit sound into the void;
a microphone disposed within the housing and below a second portion of the void, the microphone configured to detect sound present in the void; and
an acoustic divider comprising:
a first sound channel configured to isolate sound emitted from the receiver; and
a second sound channel configured to isolate sound received by the microphone, wherein the first and second sound channels are acoustically isolated from one another.

16. The mobile communication device of claim 15 , wherein heights of both first and second sound channels are equal to the height of the void.

17. A method of preventing acoustic coupling in a mobile communication device comprising:
emitting, by a receiver, sound into a first portion of a void disposed in a housing of the mobile communication device;
reflecting, by an acoustic divider, the emitted sound, the reflecting causing the emitted sound to travel through the first portion and out of the void; and
detecting, by a microphone, at least a portion of the emitted sound, the detected sound traveling to the microphone from outside of the void through a second portion of the void, wherein the second portion of the void is acoustically isolated from the first portion of the void by the acoustic divider.

18. The method of claim 17 , wherein the emitted sound is reflected away from the receiver by a slanted surface of the acoustic divider.

19. The method of claim 17 , wherein the reflecting enables substantially all of the emitted sound in the first portion of the void to travel out of the void.

20. The method of claim 17 , wherein the at least a portion of the emitted sound detected by the microphone comprises emitted sound reflected off of a user's ear.

Assignees

• Apple Inc

Inventors

• Wah Melissa A
• Hristov Stoyan P
• Tamchina Phillip

Classifications

• G10K2210/3219

  Geometry of the configuration · CPC title

• H04R2430/01

  Aspects of volume control, not necessarily automatic, in sound systems · CPC title

• G10K2210/3226

  Sensor details, e.g. for producing a reference or error signal · CPC title

• G10K11/1788

  Physics · mapped topic

• H04M1/20

  Arrangements for preventing acoustic feed-back (H04M1/62 takes precedence) · CPC title