Earphone microphone

Patent metadata

Field	Value
Publication number	US-9219953-B2
Application number	US-201414335987-A
Country	US
Kind code	B2
Filing date	Jul 21, 2014
Priority date	Jul 22, 2013
Publication date	Dec 22, 2015
Grant date	Dec 22, 2015

Abstract

Provided is an earphone microphone capable of outputting sound with good quality and picking up clear sound. The earphone microphone includes a speaker, a microphone, a main body case, and a seal member. The seal member seals between the main body case and user's external acoustic meatus when the earphone microphone is inserted in the external acoustic meatus. The main body case is provided with an acoustic space in which the speaker and the microphone are disposed, and a first opening and a second opening which are communicated with the acoustic space. When the earphone microphone is inserted in the external acoustic meatus, the first opening is communicated with the external acoustic meatus while the second opening is communicated with outside of the main body case other than the external acoustic meatus.

First claim

What is claimed is:

1. An earphone microphone comprising a speaker, a microphone having first and second sound input holes, a case, a seal member for sealing between the case and an external acoustic meatus when the earphone microphone is inserted in the external acoustic meatus, wherein
the case comprises:
an acoustic space,
a first opening which faces the external acoustic meatus, and
a second opening which faces outside the casing except the external acoustic meatus,

the acoustic space is divided into a first acoustic space and a second acoustic space, the second acoustic space having a volume smaller than a volume of the first acoustic space,
the first acoustic space communicates with the first opening, and the speaker is arranged in the first acoustic space, and
the second acoustic space communicates with the first and second openings, and the microphone is arranged in the second acoustic space, and
the first and second sound input holes face the second acoustic space.

2. An earphone microphone according to claim 1 , wherein the case has a partition wall that separates the first and second acoustic spaces from each other.

3. An earphone microphone according to claim 1 , further comprising a controller configured to generate a sound signal based on an output signal of the microphone, wherein
the microphone includes a first microphone having the first sound input hole and a second microphone having the second sound input hole.

4. An earphone microphone according to claim 1 , further comprising a signal wire for transmitting an output signal of the microphone, and a sheath member for covering the signal wire extending from the case, wherein
the second opening communicates with outside the case through a gap between the sheath member and the signal wire.

5. An earphone microphone according to claim 1 , wherein the sheath member has an opening that faces outside the case and communicates with the second opening.

6. An earphone microphone according to claim 4 , wherein
the first opening comprises a plurality of first openings, and
the first acoustic space communicates with a part of the plurality of first openings, and the second acoustic space communicates with another part of the plurality of first openings.

7. An earphone microphone comprising a microphone, a case, and a seal member for sealing between the case and an external acoustic meatus when the earphone microphone is inserted into the external acoustic meatus, wherein,
the case has formed therein:
a plurality of first openings that face the external acoustic meatus,
a second opening that faces outside the casing except the external acoustic meatus,
a first acoustic space that communicates with a part of the plurality of first openings and in which the speaker is arranged, and
a second acoustic space that communicates with another part of the plurality of first openings and with the second opening and in which the microphone is arranged, and

the case has a partition wall that separates the first and second acoustic spaces from each other.

8. An earphone microphone according to claim 7 , wherein the microphone is a differential microphone having a first sound input hole and a second sound input hole.

9. An earphone microphone according to claim 7 , further comprising a controller configured to generate a sound signal based on an output signal of the microphone, wherein
the microphone includes a first microphone having a first sound input hole and a second microphone having a second sound input hole.

10. An earphone microphone according to claim 7 , further comprising a signal wire for transmitting an output signal of the microphone, and a sheath member for covering the signal wire extending from the case, wherein
the second opening communicates with outside the case through a gap between the sheath member and the signal wire.

11. An earphone microphone according to claim 10 , wherein the sheath member has an opening that faces outside the case and communicates with the second opening.

12. An earphone microphone comprising a microphone, a case, a seal member for sealing between the case and an external acoustic meatus when the earphone microphone is inserted in the external acoustic meatus, a signal wire for transmitting an output signal of the microphone, and a sheath member for covering the signal wire extending from the case, wherein,
the case has formed therein
a first opening that faces the external acoustic meatus,
a second opening that faces outside the casing except the external acoustic meatus, and
an acoustic space that communicates with the first and second openings and in which the speaker and the microphone are arranged,

the sheath member has an opening that faces outside the case and communicates with the second opening, and
the second opening communicates with outside the case through a gap between the sheath member and the signal wire.

13. An earphone microphone according to claim 12 , wherein the microphone is a differential microphone having a first sound input hole and a second sound input hole.

14. An earphone microphone according to claim 12 , further comprising a controller configured to generate a sound signal based on an output signal of the microphone, wherein
the microphone includes a first microphone having a first sound input hole and a second microphone having a second sound input hole.

Assignees

• Funai Electric Co

Inventors

• Shimizu Noriyuki

Classifications

• H04R2410/01

  Noise reduction using microphones having different directional characteristics · CPC title

• H04R1/1083

  Reduction of ambient noise (active noise reduction per se G10K11/175; protective devices for the ear, e.g. providing acoustic protection A61F11/06) · CPC title

• H04R1/222

  for microphones (H04R1/24, H04R1/26 take precedence) · CPC title

• H04R1/1075 Primary

  Mountings of transducers in earphones or headphones · CPC title

• H04R2201/107

  Monophonic and stereophonic headphones with microphone for two-way hands free communication · CPC title