TW201311018A - Binaural-recording earphone - Google Patents

Abstract

A binaural recording earphone has a pair of speaker units and a pair of microphone units. The speaker units are separately inserted into the two ear canals, and the microphone units are combined to the speaker units. During a recording mode, the microphone unit can be disassembled from the speaker unit and instead of the position of the speaker unit for inserting into the ear canal to record surrounding sound. During a playing mode, the speaker unit is inserted into the ear canal again for reproducing the recording sound.

Description

Binaural earphone

The present invention relates generally to an earphone, and more particularly to a binaural recording earphone in which a microphone unit can be separated from a speaker unit and replaced with a set position in a recording mode.

Due to the difference in the structure of the earphone and the speaker, the sound field effect of the two is different when the music is replayed. At present, the earphones on the market cannot express the natural sound field. This is because the speaker is replaying the music. First, the air is transmitted to the human ear. At this time, the horn sound heard by the human ear is transmitted to the eardrum through the auricle, the outer ear and the ear canal, and is perceived by the brain nerves.

In such a process, the refraction, diffraction and diffraction of the sound waves of the human ear, ear canal, skull, shoulders, etc., will have some influence on the sound. This is commonly known as the "head-related transfer function" (Head-related). Transfer Function, HRTF) effect. The human brain can judge the position and distance of the sound according to experience, which is judged by the experience of the head related transfer function. However, the earphone is to directly fill the sound into the ears, so there is no influence of the head related transfer function. As a result, the human brain cannot accurately determine the direction and distance of the sound.

In order to solve the above problems, there is a technology that uses the dual-channel recording method of "Dummy Head" to solve this drawback. When the music recorded by the artificial head is used and then re-transmitted through the headphones, It can reproduce even more realistic full-angle sound field effects than speakers. This recording method is to place two miniature omnidirectional microphones in the ear canal of a dummy head that is almost identical to the real head (close to the human ear). The position of the tympanic membrane) simulates the whole process of hearing the human ear. The dummy head also has the auricle, ear canal, skull, hair and shoulders. Even the skin and bone can be made of the material closest to the human body. It is possible to realistically simulate the effects of all head related transfer functions that the human ear receives when hearing the sound.

The above-mentioned two-channel recording method is more common in that the professional recording person carries the dummy head to perform the recording operation, and must pass through the recording, and then the other music viewers can play through the earphone, and want to reproduce the recording by himself. The user of the sound field is very inconvenient. In view of the increasing versatility of electronic products such as mobile phones or computers, the functionality of the headphones used with them should be improved.

In view of the above problems, an object of the present invention is to provide a binaural recording earphone, wherein the speaker unit of the earphone is detachably separated from the microphone unit, and the microphone unit is located at an optimal recording position in the recording mode to provide the most realistic The head-related transfer function, and when played back in the speaker unit, can reproduce the most realistic natural sound field.

Therefore, in order to achieve the above objective, the binaural recording earphone of the present invention comprises two speaker units and two microphone units, wherein two speaker units are respectively insertable into the ear canal of the ears to play sound, and the two microphone units are The detachable method is combined with the two speaker unit. In the recording mode, the microphone unit can be detached from the speaker unit and inserted into the ear canal in place of the speaker unit to capture the external sound, and then in the play mode. The speaker unit in the ear canal is then placed back to reproduce the recorded sound.

In view of this, the binaural recording earphone of the present invention is designed to be separable by the speaker unit and the microphone unit, so that in the recording mode, the microphone unit can replace the position of the original speaker unit for recording, and the head related transmission can be ensured. The effect of the function is not affected, but the speaker unit plugged back into the ear canal can be reproduced in the playback mode for the most realistic recorded sound.

Hereinafter, a binaural recording earphone according to a preferred embodiment of the present invention will be described with reference to the related drawings.

The binaural recording earphone of the invention mainly comprises two speaker units and two microphone units, and the microphone unit is detachably coupled to the speaker unit. For the sake of simplicity and convenience of description, the following description of the present invention is illustrated by a single ear, and only a single speaker unit is combined with a single microphone unit to describe the structural composition and technical features.

Please refer to FIG. 1 , which is an exploded view of the binaural recording earphone of the present invention. The figure includes a speaker unit 10 and a microphone unit 20, wherein the speaker unit 10 is inserted into the ear canal 30, and the microphone unit 20 is coupled to one end of the speaker unit 10 toward the outside.

The speaker unit 10 includes a housing 11 and a speaker 12, and the speaker 12 is received in the housing 11. The front end of the housing 11 has a sound guiding tube 13 and an earplug 14 is disposed on the sound guiding tube 13. The rear end of the casing 11 is extended with a chamber 15.

The microphone unit 20 includes a housing 21 and a microphone 22. The microphone 22 is housed in the housing 21, and an earplug member 23 is sleeved on the housing 21.

The chamber 15 of the speaker unit 10 has a latching member 16 therein. When the microphone unit 20 is inserted into the chamber 15, the engaging portion 16 of the earplug member 23 is engaged with the engaging member 16 to The movement of the microphone unit 20 is limited. Since the housing 11 of the speaker unit 10 is mostly designed to be circular, the engaging member 16 herein can be designed to be annular, and a protrusion can be provided at the upper end and the lower end of the chamber 15.

Next, please refer to Figure 2, which is a schematic diagram of the binaural recording earphone in the recording mode in Fig. 1. As shown in the figure, when in the recording mode, the user can first detach the microphone unit 20 from the speaker unit 10, and take out the speaker unit 10 from the ear canal 30 and mount it behind the ear. The microphone unit 20 can be inserted into the position of the original speaker unit 10, that is, at the entrance of the ear canal 30, and fixed to the entrance of the ear canal 30 by the earplug member 23.

Since the microphone unit 20 is used for recording an external sound field, the sound receiving surface of the microphone 21 is directed toward the outside of the ear, and as shown in FIG. 1, when the microphone unit 20 is assembled on the speaker unit 10, the microphone 21 is The binaural recording earphone of the present invention can also receive an ambient sound source signal from the microphone unit 20 in a noise canceling mode, and then generate a reverse ambient sound source with the same frequency and opposite phase according to the ambient sound source signal. The signal is input to the speaker unit 10 to eliminate the ambient sound source.

The speaker unit 10 and the microphone unit 20 are electrically connected to an external electronic device, such as a mobile phone or a computer, by a transmission line 40, and a digital signal processor is disposed in the electronic device for each mode. The signal processing can be performed directly on the electronic device, or a control box can be additionally disposed on the transmission line 40 to perform the operation.

Next, please refer to FIG. 3 and FIG. 4 , which are exploded views of the second embodiment of the binaural recording earphone of the present invention and its schematic diagram in the recording mode. As shown in the figure, the difference between the present embodiment and the first embodiment is that the earplug member 23 of the microphone unit 20 is disposed at one end of the housing 21, and the outer periphery of the exposed portion of the other end of the housing 21 is as shown in the embodiment. The engaging portion 24 is recessed, so that the microphone unit 20 can be engaged with the engaging member 16 of the speaker unit 10 by the engaging portion 24 to restrict the movement of the microphone unit 20. Here, the engaging portion 24 can be designed corresponding to the engaging member 16, so that it can be designed to surround the recess of the housing 21, or a recess can be provided only at the upper end and the lower end of the housing 21.

Furthermore, when the binaural recording earphone of this embodiment is in the assembled state, the sound receiving surface of the microphone 22 faces the ear canal 30. In the recording mode, the microphone unit 20 is directly inserted into the ear canal 30, and the earplug is inserted. The piece 23 is fixed to the entrance of the ear canal 30.

Finally, it must be noted that in addition to the in-ear earphone type disclosed above, the concept of the present invention can also be applied to an earphone, and the combination between the speaker unit 10 and the microphone unit 20 is not limited by the foregoing. In addition to the manner in which the engaging member 16 and the engaging portion 24 are engaged, the engaging portion 16 may be magnetically coupled.

In summary, the binaural recording earphone of the present invention is detachably combined with the speaker unit by the microphone unit, so that when in the recording mode, the microphone unit replaces the speaker unit originally located at the entrance of the ear canal, and borrows By closing the entrance to the ear canal, the recorded external sound does not destroy the effect of the head related transfer function (HRTF). When the speaker unit is placed back into the ear canal entrance to reproduce the recorded external sound, it can provide the most realistic. Sound field effect.

The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the invention are intended to be included in the scope of the appended claims.

10. . . Speaker unit

11. . . case

12. . . speaker

13. . . Sound tube

14. . . Earplugs

15. . . Chamber

16. . . Joint piece

20. . . Microphone unit

twenty one. . . case

twenty two. . . microphone

twenty three. . . Earplugs

twenty four. . . Clamping department

30. . . Ear canal

40. . . Transmission line

1 is an exploded view of a first embodiment of a binaural recording earphone of the present invention;

Figure 2 is a schematic diagram of the binaural recording earphone in the recording mode in Fig. 1;

3 is an exploded view of a second embodiment of the binaural recording earphone of the present invention;

Figure 4 is a schematic diagram of the binaural recording earphone in the recording mode in Fig. 3.

10. . . Speaker unit

11. . . case

12. . . speaker

13. . . Sound tube

14. . . Earplugs

15. . . Chamber

16. . . Clip

20. . . Microphone unit

twenty one. . . case

twenty two. . . microphone

twenty three. . . Earplugs

twenty four. . . Clamping department

30. . . Ear canal

40. . . Transmission line

Claims (12)

A binaural recording earphone comprising: a two-speaker unit for respectively inserting sound signals into the ear canal of the two ears; and two microphone units detachably coupled to the two speaker units; wherein, when The two-ear recording unit is detached from the two-speaker unit in a recording mode, and the two-speaker unit is inserted into the binaural ear canal, and the two microphone units are facing out of the ear. . The binaural recording earphone according to claim 1, wherein the two microphone units are disposed at an entrance of the binaural ear canal when the recording mode is in the recording mode. The binaural recording earphone of claim 1, wherein the two speaker units each include a housing to accommodate a speaker. The binaural recording earphone according to claim 3, wherein a front end of the casing extends a sound guiding tube, and an earplug member is sleeved on the sound guiding tube. The binaural recording earphone of claim 3, wherein a rear end of the casing extends a chamber for assembling the microphone unit. The binaural recording earphone of claim 5, wherein the periphery of the chamber is provided with a snap member for the microphone unit to be engaged. The binaural recording earphone according to claim 1, wherein the two microphone units each include a casing for accommodating a microphone, and the casing is provided with an earplug member. The binaural recording earphone of claim 7, wherein the earplug member forms a seal in the ear canal. The binaural recording earphone of claim 7, wherein the earplug member is disposed at one end of the housing, and the other end of the housing is provided with a latching portion for the microphone unit to be engaged with the microphone unit Speaker unit. The binaural recording earphone of claim 7, wherein the earplug member has a latching portion for the microphone unit to be engaged with the speaker unit. The binaural recording earphone of claim 1, wherein the microphone unit is magnetically attracted to the speaker unit. The binaural recording earphone according to claim 1, wherein in a noise canceling mode, the two microphone units are assembled on the two speaker units, and the two microphone units receive an ambient sound source signal. And thus a reverse ambient sound source signal is provided to the speaker.