Electronic device including a directional microphone
An electronic device may include a housing and a directional microphone. The housing may include a front surface, a rear surface positioned opposite the front surface, and a hollow cavity positioned between the front surface and the rear surface. The hollow cavity may include a front opening defined in the front surface and a rear opening defined in the rear surface. The directional microphone may include a front port and a rear port. The directional microphone may be mounted in the hollow cavity of the housing with the front port oriented toward the front opening and with the rear port oriented toward the rear opening.
1. An electronic device comprising:
a housing including a front surface, a rear surface positioned opposite the front surface, and a hollow cavity positioned between the front surface and the rear surface, the hollow cavity including a front opening defined in the front surface, a rear opening defined in the rear surface, and a cavity surface that extends between the front opening and the rear opening and defines a body of the hollow cavity; and
a directional microphone including a front port, a rear port, and an outer surface that extends between the front port and the rear port and defining a maximum diameter in a first plane that includes opposite sides of the outer surface and that is perpendicular to a second plane that includes the front port and the rear port, wherein
the directional microphone is suspended in the hollow cavity of the housing using at least two spokes to attach the directional microphone to the cavity surface of the hollow cavity with the front port oriented toward the front opening and with the rear port oriented toward the rear opening, and
lengths of each of the at least two spokes are larger than the maximum diameter of the directional microphone and cause an open gap between the outer surface of the directional microphone and the cavity surface such that a minimum distance of the open gap between any point on the outer surface of the directional microphone and any point on the cavity surface is greater than the maximum diameter of the directional microphone.
2. The electronic device of claim 1 , wherein the electronic device is a telephone base that further includes a speaker that is at least partially mounted in the housing.
3. The electronic device of claim 2 , wherein the speaker is at least partially mounted in the housing in a null of the directional microphone.
4. The electronic device of claim 2 , wherein the speaker includes an acoustic radiation direction and the hollow cavity is oriented in a direction that is offset by an angle from the acoustic radiation direction of the speaker, wherein the angle is between 10 degrees and 50 degrees.
5. The electronic device of claim 1 , wherein the electronic device is a remote microphone configured to connect to a communication device or a telephone handset that further includes a speaker at least partially mounted in the housing.
6. The electronic device of claim 1 , wherein the cavity surface has a substantially straight cylindrical shape.
7. The electronic device of claim 1 , wherein the directional microphone is contained completely within the hollow cavity such that no portion of the directional microphone extends out of the hollow cavity, and a diameter of the front opening of the hollow cavity is larger than the diameter of the directional microphone and a diameter of the rear opening of the hollow cavity is larger than the diameter of the directional microphone.
8. An electronic device comprising:
a housing including a front surface, a rear surface positioned opposite the front surface, and a hollow cavity positioned between the front surface and the rear surface, the hollow cavity including a front opening defined in the front surface and a rear opening defined in the rear surface; and
a directional microphone including a front port and a rear port and defining a diameter in a first plane perpendicular to a second plane that includes the front port and the rear port, the directional microphone mounted in the hollow cavity of the housing with the front port oriented toward the front opening and with the rear port oriented toward the rear opening, the directional microphone being contained completely within the hollow cavity such that no portion of the directional microphone extends out of the hollow cavity, a diameter of the front opening of the hollow cavity is larger than the diameter of the directional microphone, and a diameter of the rear opening of the hollow cavity is larger than the diameter of the directional microphone.
9. The electronic device of claim 8 , wherein the directional microphone is mounted in the hollow cavity using one or more spokes that attach to one or more walls of the hollow cavity such that the directional microphone is suspended in the hollow cavity of the housing by the one or more spokes.
10. The electronic device of claim 8 , wherein the front opening and the rear opening of the hollow cavity are substantially aligned such that a straight line passes through the front opening and the rear opening.
11. The electronic device of claim 8 , wherein the hollow cavity has a shape that is cylindrical, rectangular, oval, pentagonal, or hexagonal.
12. The electronic device of claim 8 , further comprising a speaker that is at least partially mounted in the housing.
13. The electronic device of claim 12 , wherein the speaker is at least partially mounted in the housing in a null of the directional microphone.
14. The electronic device of claim 12 , wherein the speaker includes an acoustic radiation direction and the hollow cavity is oriented in a direction that is offset by an angle from the acoustic radiation direction of the speaker, wherein the angle is between 10 degrees and 50 degrees.
15. The electronic device of claim 8 , wherein the electronic device includes a telephone base that further comprises a speaker at least partially mounted in the housing.
16. A device comprising:
a housing including a front surface, a rear surface positioned opposite the front surface, and a hollow cavity positioned between the front surface and the rear surface, the hollow cavity including a front opening defined in the front surface and a rear opening defined in the rear surface; and
a directional microphone including a front port and a rear port and defining a diameter in a first plane perpendicular to a second plane that includes the front port and the rear port, the directional microphone mounted in the hollow cavity of the housing using one or more spokes to attach the directional microphone to one or more walls of the hollow cavity with the front port oriented toward the front opening and with the rear port oriented toward the rear opening, and a diameter of the front opening of the hollow cavity is larger than the diameter of the directional microphone and a diameter of the rear opening of the hollow cavity is larger than the diameter of the directional microphone.
17. The device of claim 16 , wherein the front opening and the rear opening of the hollow cavity are substantially aligned such that a straight line passes through the front opening and the rear opening.
18. The device of claim 16 , further comprising a speaker mounted in the housing, wherein the speaker is at least partially mounted in the housing in a null of the directional microphone.
19. The device of claim 18 , wherein the speaker includes an acoustic radiation direction and the hollow cavity is oriented in a direction so that a straight line passing through the front opening and the rear opening is offset by an angle from the acoustic radiation direction of the speaker, wherein the angle is between 10 degrees and 50 degrees.
20. The device of claim 16 , wherein the directional microphone is contained completely within the hollow cavity such that no portion of the directional microphone extends out of the hollow cavity.