Acoustic apparatus with side port

Patent metadata

Field	Value
Publication number	US-9800971-B2
Application number	US-201615064277-A
Country	US
Kind code	B2
Filing date	Mar 8, 2016
Priority date	Mar 17, 2015
Publication date	Oct 24, 2017
Grant date	Oct 24, 2017

Abstract

An apparatus includes a microphone and a gasket. The microphone includes a base having an inner surface and an outer surface. The inner surface is generally parallel with the outer surface. The base has a port extending from the outer surface to the inner surface. The microphone includes a micro electro mechanical system (MEMS) transducer coupled to the inner surface of the base over the port. The microphone has a cover coupled to the base and the cover encloses the MEMS transducer. The gasket is coupled to the outer surface of the base and forms a channel. The channel has a first end and a second end. The first end communicates with the port of the microphone, and the second end of the channel is generally aligned with an edge of the base.

First claim

What is claimed is:

1. An apparatus, comprising:
a microphone, the microphone including a base, the base having an inner surface and an outer surface, the inner surface being generally parallel with the outer surface, the base having a port extending from the outer surface to the inner surface, the microphone including a micro electro mechanical system (MEMS) transducer coupled to the inner surface of the base over the port, the microphone having a cover coupled to the base and enclosing the MEMS transducer; and
a gasket coupled to the outer surface of the base, the gasket forming a channel along the outer surface of the base, the channel having a first end and a second end, the first end communicating with the port of the microphone, and the second end of the channel being generally aligned with an edge of the base.

2. The apparatus of claim 1 , wherein the channel extends completely through a thickness of the gasket.

3. The apparatus of claim 1 , further comprising a plate, the plate being coupled to the gasket and covering at least some portions of the channel.

4. The apparatus of claim 3 , wherein acoustic energy enters the channel at the second end, moves through the channel along the outer surface of the base of the microphone to the first end of the channel, and then passes through the port in a second direction perpendicular to a first direction.

5. The apparatus of claim 1 , wherein the outer surface of the base has a first dimension and a second dimension, the first dimension is less than the second dimension and the channel extends along the first dimension.

6. The apparatus of claim 1 , wherein the outer surface of the base has a first dimension and a second dimension, the first dimension is less than the second dimension and the channel extends along the second dimension.

7. The apparatus of claim 1 , wherein the microphone includes an integrated circuit.

8. The apparatus of claim 1 , wherein the gasket is constructed of a flexible material.

9. An apparatus, comprising:
a microphone, the microphone including a base, the base having an inner surface and an outer surface, the inner surface being generally parallel with the outer surface, the base having a port extending from the outer surface to the inner surface, the microphone including a micro electro mechanical system (MEMS) transducer coupled to the inner surface of the base over the port, the microphone having a cover coupled to the base and enclosing the MEMS transducer;
a gasket coupled to the outer surface of the base, the gasket forming a channel, the channel having a first end and a second end, the first end communicating with the port of the microphone, and the second end of the channel being generally aligned with an edge of the base, the channel extending completely through a thickness of the gasket, the channel being generally straight; and
a plate, the plate being coupled to the gasket and covering at least some portions of the channel;
such that acoustic energy enters the channel at the second end, moves through the channel along the outer surface of the base of the microphone to the first end of the channel, and then passes through the port in a second direction perpendicular to a first direction.

10. The apparatus of claim 9 , wherein the outer surface of the base has a first dimension and a second dimension, the first dimension is less than the second dimension and the channel extends along the first dimension.

11. The apparatus of claim 9 , wherein the outer surface of the base has a first dimension and a second dimension, the first dimension is less than the second dimension and the channel extends along the second dimension.

12. The apparatus of claim 9 , wherein the microphone includes an integrated circuit.

13. The apparatus of claim 9 , wherein the gasket is constructed of a flexible material.

14. An electronics device, comprising:
a microphone, the microphone including a base, the base having an inner surface and an outer surface, the inner surface being generally parallel with the outer surface, the base having a port extending from the outer surface to the inner surface, the microphone including a micro electro mechanical system (MEMS) transducer coupled to the inner surface of the base over the port, the microphone having a cover coupled to the base and enclosing the MEMS transducer;
a gasket coupled to the outer surface of the base, the gasket forming a channel having an axis that intersects an axis of the port, the channel having a first end and a second end, the first end communicating with the port of the microphone, and the second end of the channel being generally aligned with an edge of the base; and
a second port that communicates via a passageway with the second end of the channel.

15. The electronics device of claim 14 , wherein the channel extends completely through a thickness of the gasket.

16. The electronics device of claim 15 , further comprising a plate, the plate being coupled to the gasket and covering at least some portions of the channel.

17. The electronics device of claim 16 , wherein acoustic energy enters the second port, enters the second end of the channel, moves through the channel along the surface of the base of the microphone to the first end of the channel, and then passes through the port in a second direction perpendicular to a first direction.

18. The electronics device of claim 14 , wherein the outer surface of the base has a first dimension and a second dimension, the first dimension is less than the second dimension and the channel extends along the first dimension.

19. The electronics device of claim 14 , wherein the outer surface of the base has a first dimension and a second dimension, the first dimension is less than the second dimension and the channel extends along the second dimension.

20. The electronics device of claim 14 , wherein the microphone includes an integrated circuit.

Assignees

• Knowles Electronics Llc

Inventors

• Manley Matthew
• Rodack John

Classifications

• H04R19/04

  Microphones (H04R19/01 takes precedence) · CPC title

• H04R19/005

  using semiconductor materials · CPC title

• H04R1/342 Primary

  for microphones · CPC title

• H04R2499/11

  Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's · CPC title

• H04R1/04

  Structural association of microphone with electric circuitry therefor (in electric hearing aids H04R25/00) · CPC title