CN1771762A - Communications headset with isolating in-ear driver - Google Patents

Abstract

The present invention relates to a communications headset. The headset comprises a housing (902) that includes a speaker driver. The headset further comprises a nozzle (9049 for insertion into an ear canal. The nozzle (904) is coupled to the housing (902). The headset additionally comprises an acoustically isolating earpiece (906) coupled to the nozzle (904), the earpiece (906) and the housing (902) providing of acoustic isolation from ambient sound over the range of audible frequencies. The headset further comprises a microphone (9016).

Description

Communication headset with sound-isolating in-ear drivers

technical field

The present invention relates to a communication headset with a sound-isolating in-ear driver, in particular to a sound-isolating earphone connected with a microphone device.

Background technique

Difficulty often arises when using communication systems such as mobile phones in noisy environments. For example, in such an environment, the user may not be able to hear clearly the voice of the far-end interlocutor, ie, the speaker on the other end of the telephone. Improving the signal-to-noise ratio makes communication easier by making it easier for the person on the other end to hear and understand, improving user experience.

This signal-to-noise ratio improvement is achieved regardless of whether the background ambient noise is conversation-like or erratic, such as at a social gathering or train station, or where the background noise remains constant, such as that caused by cars, airplanes or machinery All wanted.

Some users of mobile phones prefer to make calls in a "hands-free" fashion, allowing the user to talk and receive calls without using his or her hands. Typically, a user who desires this hands-free operation uses a headset that employs a standard earphone, which typically wraps around or rests on top of the user's ear. Formal headphones, such as "earbuds", are often packaged with the mobile phone and rest on the outside of the ear. Such headsets generally include a microphone.

Such headsets do little, if anything, to block or prevent background noise from reaching the user's ears. The user of a typical headset or earphone must place one hand on his or his ear or hold the earphone closer to their ear to block out unwanted noise, thereby Hear the conversation on the other end. This practice of placing the hand near the ear is contrary to the "hands-free" function of the headset.

Additionally, typical headsets are uncomfortable to wear and do not remain on the user's head.

Some systems respond to background noise by employing an active noise cancellation system, which attempts to remove unwanted noise by adding an "anti-noise" signal to the desired signal. Such systems are very expensive because they require additional logic circuitry and are not necessarily effective in dynamic noisy environments. Active noise canceling headphones are usually larger and heavier than other headphones. This active noise cancellation process cancels selected frequencies through a complex process, but this still introduces unwanted artifacts into the synthesized sound. Furthermore, such a process is battery-driven and will add additional battery drain, which may be undesirable where battery size, weight, and drain are all important.

Therefore, there is a need in this field for an inexpensive headset for communication, which can effectively block background noise, is comfortable to wear, and can be effectively fixed to the user's head.

Contents of the invention

The disclosed communication system satisfies one or more of the needs described in the prior art.

In a first embodiment, a communication headset is provided. The headset includes a microphone, a speaker driver, a nozzle inserted into the ear canal, and a sound-isolating earphone connected to the nozzle. The earphone includes an outer sleeve connected to an inner cylindrical hard tube. The flexible sleeve is a friction fit with the ear canal and provides sound insulation. When a complete sound seal is achieved between the sleeve and the ear canal, the earphones can ideally provide 15-25dB of sound isolation. A microphone is connected to the system via a boom and a cable leading from the speaker driver. The cable provides an input signal to a speaker driver and an output signal to a microphone.

In one embodiment, the sleeve may comprise a compressible closed cell foam formed to fit the ear canal and the inner cylindrical rigid tube. The inner cylindrical tube and nozzle are friction fit to secure the earphone to the speaker driver.

In other embodiments, the sleeve may comprise an outer portion of flexible plastic or silicone that fits the ear canal and an inner portion that is a cylindrical tube. The inner cylindrical tube and nozzle friction fit to secure the earphone to the speaker driver.

The earphones can take various shapes and can provide an open passage for external noise. In this embodiment, the volume of insulation is deliberately reduced relative to a design without open passages.

The headset can be supported on the user's head by the earphone alone, without the need for additional fasteners or connecting mechanisms.

The boom may be rigidly or hingedly connected to the housing. The boom can be flexible or rigid. A flexible cable and boom extending from the housing extend in the same direction, allowing the device to be worn on the left or right ear.

The details of these and other embodiments of the invention are set forth in the accompanying drawings and the description below. Other features and advantages of the invention will be more apparent from the description, drawings and claims.

Description of drawings

The invention consists of parts, steps and embodiments which are described in detail in the following description and in the accompanying drawings which form a part hereof, in which:

Fig. 1 shows a headset communication headset according to an embodiment of the present invention;

Figure 2 illustrates a communication headset with a rigid, articulating boom in accordance with an embodiment of the present invention;

Figure 3 illustrates a communication headset with a flexible articulated boom according to an embodiment of the present invention;

Figure 4 illustrates a communication headset with a flexible, hingeless boom according to an embodiment of the present invention;

Fig. 5 shows the detail of the structure of the embodiment of the present invention;

Figure 6 shows structural details of a controller and volume device that may be included in an embodiment of the present invention;

Fig. 7 shows the structural member details of the embodiment of the present invention;

Figure 8 shows the embodiment of Figure 7;

9-12 illustrate other earphone arrangements according to various embodiments of the invention;

Figures 13 and 14 show an embodiment of the invention and additional details of the connection to the user's ear;

Figure 15 shows an embodiment of the invention and additional details of the connection to the user's ear;

Figure 16 shows the fit of the parts of the embodiment of the invention and the user's ear canal;

Figure 17 shows another embodiment of the present invention;

Figure 18 shows a top view of the embodiment shown in Figure 17;

Figure 19 shows a side view of the embodiment shown in Figure 17;

Figure 20 shows an end view of the embodiment shown in Figure 17;

Figure 21 shows the embodiment shown in Figure 17 with intersecting planes;

Figure 22 is another view of the embodiment shown in Figure 21.

Detailed ways

1-4 illustrate various embodiments of a communication headset according to the present invention. FIG. 1 shows a headset 102 according to an embodiment of the invention. The handset is worn on the user's head and includes a microphone 104 attached to a boom 106 . A flexible cord 108 extends from the device to the mobile phone 110 .

Figure 2 illustrates a communications headset with a rigid, articulating boom 202 in accordance with an embodiment of the present invention. In this embodiment, the cable 204 flexibly and fixedly extends from the base 206 . In this embodiment of the invention, the nozzle 208 and boom 202 must be able to come out of the base 206 with a geometry compatible with human anatomy so that the boom 202 can place the microphone close enough to the user's mouth , and the nozzle 208 can be comfortably inserted into the user's ear canal.

Figure 3 illustrates a communication headset with a flexible articulating boom 302 according to an embodiment of the present invention. FIG. 4 illustrates a communication headset with a flexible non-articulated boom 402 according to an embodiment of the present invention.

Figure 5 shows details of one embodiment of the invention. One end of the microphone boom 502 is connected to the front microphone housing 504a and the rear microphone housing 504b. Boom 502 has a suitable length and can be adjusted to bring the end microphone closer to the user's mouth. The other end of the boom 502 is connected to the boom housing 512 .

As is well known in the art, a microphone capsule or element 506 is disposed within the microphone housing. In this configuration, directional microphone elements such as cardioid, bi-directional ("noise canceling"), or supercardioid designs are preferred because of their ability to block unwanted ambient noise. An omnidirectional microphone can also be used.

The outer shell 508 and the inner shell 510 form a housing. The housing connects the boom housing 512 to an in-ear driver 520 known in the art, such as the E2C in-ear driver manufactured by Shure Inc. of Evanston, Illinois.

In a direction parallel to boom 502 , a front exit cable 514 extends from housing 512 and housing 508 . In particular, said cable 514 protrudes from a flexible release unit 515 in an opening formed by a lip 540 of the housing 512 and a lip 542 of the housing 508 . The cord 514 is shaped to be bent into various shapes to suit the user's preference, in this illustration the cord 514 is bent upwards so as to extend around the outside of the user's left ear. Alternatively, the cord 514 may extend downwardly after exiting the housing formed by 508, 510 and the device may then extend around the user's right ear.

End piece 521 includes nozzle 522 and is connected to housings 508 , 510 . Nozzle 522 extends into earphone 530 which frictionally fits in the user's ear canal. The earpiece 530 includes a rigid plastic cylinder 532 and a foam sleeve 534 forming an opening. Alternatively, the earphone 530 is made of a plastic or silicone material and has the functional properties of a sleeve 534 to frictionally engage the ear canal and the functional properties of a cylinder 532 to frictionally engage the nozzle 522. Cooperate. A plug 550 is also provided in the cylinder body 532 .

The sleeve 534 is compressible and shaped to fit and friction fit the user's ear canal. The sleeve is sufficiently rigid that the entire headset assembly can be supported by the fit between the earphone and the user's ear canal without the need for additional joints, fittings or other structures that engage the user's outer ear.

It is not necessary for the cord 514 to fit the user's ear in order to support the device within the ear. The cable shown in Figure 5 can be engaged with the user's left ear to assist in supporting the device. The cord 514 may also extend from the housing 510 straight down, without engaging the outer ear of the user. In this case, a friction fit of the earpiece 530 within the user's ear canal is sufficient to support the device.

Thus, the in-ear design is sufficient to comfortably support a lightweight headset boom without the need for additional ear fittings.

In another embodiment, the microphone is connected to the cable 514 at a distal point along the length of the cable. As is well known, this "neck" setup is similar to the "ear" pendant microphone headset of existing mobile phones.

Figure 6 shows further details of the structural components of the controller and volume device included in an embodiment of the present invention. The upper cover 602 and the lower cover 604 are fixed together. These covers house the headset's controls, which can perform different tasks, such as a volume control 610 and a mute control 612 . Controller 610 is a potentiometer, while controller 612 is a slide switch. The potentiometer rotates around a thumb wheel 614 . Flexible releases 616 and 618 lead out from openings formed by top cover 602 and bottom cover 604 .

Figures 7A, 7B, 7C, 7D and 8 show details of other embodiments of the invention. The rotating microphone boom 702 includes a microphone housing formed from a front microphone housing 704a and a rear microphone housing 704b. A well-known capsule 706 is disposed within the microphone housing.

As shown in FIG. 7A , the microphone leads 708 , 710 extend within the body of the boom 702 . The microphone boom housing includes an outer boom housing 714 and an inner boom housing 716 . The inner and outer boom housings 716 , 714 house a bearing for rotating a nylon washer 720 , stainless steel Belville washers 722 and Phillips button head screws 724 . Lead out the front exit cable 730 from the device and cable exit grommet 732 .

The in-ear drivers 740 are connected to the outer boom housing 716 . Wires (not shown) enter the driver 740 from an opening 742 in a bottom 744 of the driver, which also includes a top 746 . Ends 748 and 750 form a cylinder or nozzle that extends into the opening of silicone earplug 760 .

The boom 702 and the boom housing formed by the boom housings 714, 716 are hingedly engaged with the driver 740 such that the boom 702 can rotate relative to the driver 740 over 60 degrees. The joint 770 acts as a stop that controls the rotation of the boom 702 .

Details of the silicone earplug 760 are shown in Figure 7c. The silicone earplug 760 can be cut to different lengths to fit a particular user. In one embodiment, the earplug 760 is 20mm in length and can be cut to lengths of 16.5mm, 13mm, 9.5mm and 6mm for different fits.

Driver 740 includes internal components 764 that are well known in the art, such as the E2C driver manufactured by Shure, Inc. of Evanston, Illinois.

9-12 illustrate various geometries of earphones used in the present invention. Various vented and partially sound-isolating headphones allow some background noise to leak into the user's ear canal. This leakage enables adjustment to the surrounding environment preferences of different users and allows the system to be used in environments where complete soundproofing is not desired. As shown in these figures, possible designs include small ventilation holes and open channels around the outside of the sleeve. Various embodiments of the invention include star, propeller, "C", kidney, and "starburst" shapes.

In addition, various types of foam or plastic can be used for the sleeve portion of the earphone, such as open-cell low acoustic impedance foam, closed-cell high acoustic impedance foam, PVC, plastic or silicone. In a preferred embodiment, the foam used is a closed cell high acoustic impedance foam. This foam has a sound insulation effect of 15-25dB. In a second preferred embodiment, the sleeve portion of the earphone is flexible PVC plastic. This PVC casing also has a sound insulation effect of 15-25dB. In other embodiments, the sound insulation can be reduced to a desired level, down to 12 dB, using combinations of the materials described.

By selecting from these earphone categories, the user can personalize the fit of the IEM to fit his or her particular ear and also determine the degree of sound isolation desired. The sleeve is adapted to the unique shape of the user's ear. In addition, the custom in-ear fit eliminates the painful pressure points of typical over-ear headsets, enabling users to wear the headset for longer periods of time.

FIG. 16 shows the friction fit of the earpiece 886 within the ear canal 888 of the ear 884 . A portion of the housing 880 rests on a portion of the ear, referred to by those skilled in the art as the ear bowl, the underside of which is indicated by arrow 882 . In FIG. 16, earphone 886 is not fully inserted into the user's ear canal.

17-22 illustrate other embodiments of the invention. As shown in FIG. 17 , the present invention includes a housing 902 and a nozzle 904 drawn from the housing 902 . Earpiece 906 is attached to the housing and blocks most of the view of nozzle 904 shown in FIG. 17 , which is similar to nozzle 522 shown in FIG. 5 . The housing 902 and the earphone 906 together can provide at least 15 dB of sound insulation against ambient sound in the audible frequency range. In a preferred embodiment, the housing 902 and earphone 906 are capable of providing 15-25 dB of sound isolation together.

A cable 908 exits the housing 902 and ultimately connects to a cellular phone or other audio device. The cable 908 includes a strain relief 910 . The housing 902 may also be connected to a boom guide 912 . The boom guide 912 may be made of a hard rigid material. A flexible boom 914 leads from the boom guide 912 . The microphone assembly 916 is attached to the end of the boom 914 . The present invention also includes a flexible ear support 918 that can support the headset on the user's ear. The ear supports 918 are preferably made of a flexible rubber material.

As shown in FIG. 18 , boom guide 918 defines a boom axis shown by dotted line 930 along its longitudinal direction. The nozzle 904 forms a nozzle axis indicated by a dotted line 932 along its longitudinal direction. In the plane of paper shown in FIG. 18 , the boom axis and nozzle axis are coplanar and intersect at an angle indicated at 936 . In Figures 19 and 20, the dotted line 950 also shows this plane. In FIGS. 21 and 22, the dotted rectangle also indicates this plane.

Referring to FIG. 18, the angle 936 is in the range of about 77 degrees to 97 degrees, preferably about 87 degrees.

Still referring to FIG. 18 , the headset rests on the user along a plane extending orthogonally from the plane defined by the page of FIG. 18 as indicated by dotted line 940 . The plane defined by dash-dotted line 940 is further illustrated by dashed rectangle 962 in FIG. 21 . In particular, the housing 902 rests on the portion of the user's ear referred to by those skilled in the art as the pinna. As shown in FIG. 16 , housing 880 rests along the pinna of the user, with its underside indicated by arrow 882 , all of which are part of ear 884 of the user. In FIG. 16, earphone 886 is not fully inserted into the pinna of the user.

Referring to FIG. 18 , in the first plane, a second plane defined by dashed-dotted line 940 , which is normal to the first plane, forms an angle 938 with the axis of the nozzle shown by dashed-dotted line 932 . The angle 938 is in the range of about 23 degrees to 43 degrees, preferably about 33 degrees.

The longitudinal direction of housing 902 is the housing axis shown by dotted line 944 . When the axis defined by dot-dash line 944 is coplanar with the boom axis defined by line 930 and the nozzle axis defined by line 932, the boom axis and nozzle axis are angled away from the housing axis. The cable 908 is led out of the housing 902 along a direction parallel to the axis of the housing indicated by the dotted line 944 . In some embodiments, the housing may be shaped without a longitudinal direction.

Certain features of the geometry of the headset enhance its suitability for use in the left or right ear of the user. In particular, the nozzle 904, the boom arrangement 912, and the cable 908 extend in a coplanar manner within the plane indicated by the dotted line 950 in FIGS. 19 and 20 and the dashed rectangle 960 in FIGS. 21 and 22 . In addition, the plane shown by the line 960 in FIG. 21 is orthogonal to the plane shown by the dashed line 962 in FIG. 21 . These features allow the user to interchange Put the headset on your left or right ear smoothly. As shown in FIG. 17, the ear support 918 includes an opening 954 so that the ear support 918 can be slid over the housing 902 and flipped over for left or right ear operation as desired by the user.

In some figures, such as FIGS. 21 and 22, the strain relief 910 of the cable is shown, but the remainder of the cable 908 is not shown. Referring to FIG. 19, the cables 908 may extend down below the plane defined by the wires 950, as shown at 908a, or the cables 908 may extend upwardly from the plane defined by the wires 950, as shown at 908b, depending on the use. preferences.

As previously stated, it is clear that the sealed sound path of the present invention can silence the output of the mobile phone's headset or the far-end talker when the volume of the mobile phone is turned up to maximum. This makes it possible to reduce the volume loudness required to hear the talker speaking at normal loudness. Additionally, the ear canal connection improves low- and low-mid frequency response compared to most headphones, which is important for voice communication. The device requires less power to amplify, making the design more efficient and drawing less power from the portable power source, ie less battery drain.

The acoustic design also provides inherent noise attenuation by the sleeve so that only low volume is required in loud environments. This minimizes hearing fatigue and permanent or semi-permanent hearing damage since the user does not need to increase the volume to compensate for "leakage" sound. It also means that the signal will have less distortion, which increases with amplitude.

The invention is also suitable for communication applications where external background sound attenuated by the earphone in one ear needs to be heard clearly in the other ear. In applications such as online gambling, the user uses a headset to carry on a conversation while using open, unplugged ears to hear the sounds of the surrounding game. The invention allows the user to be able to hear game sounds and also improves communication. By attenuating game sounds in one ear, the headset makes far-end talkers more audible, and by using a directional microphone element to block out game sounds, the microphone makes near-end talkers more audible.

Other embodiments of the invention include tunable environments for electron injection. This embodiment uses a small built-in microphone and allows the user to select the desired amount of ambient noise by adding an adjustable level of sound to the localized ambient sound delivered by the earphones to the user's ear / Leakage.

The present invention can also include two headset options for use in communication applications where complete sound isolation is desired. In this embodiment, the earphones are inserted into both ear canals. Such an application is needed to maintain the sound in a high-noise environment or when you want to use a multimedia device to listen to stereo sound.

In the dual-earphone structure, the present invention realizes the presented sound by utilizing the level difference between the left and right ear signals, signal phase difference (~180 degrees) or time delay (interaural time difference, ITD, less than 100ms). Localization (making the user feel that the sound is coming from one direction and not the other). This positioning can be applied in communication applications to create a sense that the far end talker's signal is coming more from the right or more from the left and still use both earphones. This also increases the perceived loudness of the signal by a factor of 1.4-2 anywhere, without actually using the higher signal level in either ear.

Since the speaker is sound-isolated from the microphone via the position of the speaker in the ear canal, the present invention can reduce the echo between the microphone and the earphone.

Alternatively, the in-ear driver technology can be used with an active noise cancellation system to achieve the best of both worlds in very demanding conditions.

The system can also be used in various wireless applications. For example, the headset may communicate wirelessly with a telephone headset, or the electronics for telephone communications may be housed within the housing. In such an application, a microphone cable such as cable 908 shown in Figures 17 or 18 would not be required.

In summary, a communication headset is described herein. Accordingly, the invention is encompassed in the forms shown in the various drawings. Many variations are possible within the scope of the invention. These variations form a part of the present invention.

Claims (52)

1, a kind of communications headset comprises:

The housing that comprises loudspeaker drive;

Be inserted into the nozzle in the duct, described nozzle links to each other with described housing;

The sound insulation earphone that links to each other with described nozzle, described earphone can relative ambient sound provide the soundproof effect of 15dB at least with described housing in audio range; And

Microphone.

2, communications headset as claimed in claim 1 is characterized in that, described earphone in audio range relatively ambient sound the soundproof effect of 15-25dB is provided.

3, communications headset as claimed in claim 1 is characterized in that, described earphone comprises opening and is suitable for flexible material with ear canal.

4, communications headset as claimed in claim 3 is characterized in that, described opening comprises columniform hard tube, and described flexible material comprises the compressible foam around described pipe.

5, communications headset as claimed in claim 3 is characterized in that, described flexible material is plastics.

6, communications headset as claimed in claim 3 is characterized in that, described flexible material is a silicones.

7, communications headset as claimed in claim 3 further comprises the trolley pole assembly that extends from described housing, it is characterized in that microphone links to each other with described trolley pole assembly.

8, communications headset as claimed in claim 7 is characterized in that, described trolley pole assembly comprises rigid hanger guide and flexible suspension rod.

9, communications headset as claimed in claim 7, it is characterized in that vertical formation first axle of described trolley pole assembly, vertical formation second axis of described nozzle, the wherein first axle and second axes intersect, and in first planar shaped at an angle.

10, communications headset as claimed in claim 9 is characterized in that, described first angle about 77 and about 97 the degree between.

11, communications headset as claimed in claim 9 is characterized in that, described first angle is approximately 87 degree.

12, communications headset as claimed in claim 9 is characterized in that, with second plane of first planar quadrature in, described housing and user's ear matches.

13, communications headset as claimed in claim 12 is characterized in that, described headset can the symmetrical left ear or the auris dextra that are used for the user.

14, communications headset as claimed in claim 12 is characterized in that, described second plane and second axis form one in about 23 second angles of spending between about 43 degree.

15, communications headset as claimed in claim 14 is characterized in that, described second angle approximately is 33 degree.

16, communications headset as claimed in claim 9 further comprises the cable that extends and form the 3rd axis from housing, it is characterized in that first axle, second axis and the 3rd axis coplane.

17, communications headset as claimed in claim 1 further comprises flexible ear support.

18, communications headset as claimed in claim 3 is characterized in that, the described earphone electrophone of will communicating by letter separately is bearing on the user.

19, communications headset as claimed in claim 1 further comprises a cable of drawing from housing, and described cable provides input signal for loudspeaker drive, and provides output signal for microphone.

20, communications headset as claimed in claim 19 is characterized in that, described microphone links to each other with described cable.

21, communications headset as claimed in claim 19 is characterized in that, described cable and described earphone cooperation are to be bearing in the described electrophone of communicating by letter on the user.

22, communications headset as claimed in claim 1 is characterized in that, described microphone is directed.

23, communications headset as claimed in claim 22, wherein, described microphone can be selected from organize down: heart-shaped microphone, bi-directional microphones and super heart-shaped microphone.

24, communications headset as claimed in claim 1 is characterized in that, the sound around at least some is passed described driver by fax.

25, communications headset as claimed in claim 1 is characterized in that, described microphone can described relatively driver signal sound insulation, thereby reduces the echo to the far-end speaker.

26, communications headset as claimed in claim 3 is characterized in that, described flexible material may be molded to following shape: star, kidney bean shape, triangle, T_Starburst, propeller shape and letter C shape.

27, communications headset as claimed in claim 1 is characterized in that, described earphone comprises a plurality of openings and is suitable for flexible material with ear canal.

28, a kind of communications headset comprises:

Vertically form the boom guide of first axle along it;

Be inserted into the nozzle in the duct, described nozzle vertically forms second axis along it and also and from described first axle extends angledly;

The housing that comprises loudspeaker drive, described nozzle links to each other with described housing, and described housing vertically forms the 3rd axis along it, and the first axle and second axis extend from described the 3rd axis angledly;

The sound insulation earphone that links to each other with described nozzle;

Suspension rod from described boom guide extension; And

The shotgun microphone that links to each other with described suspension rod.

29, communications headset as claimed in claim 28 further comprises, the cable that extends along the 3rd axis direction from housing, and described cable provides input signal for loudspeaker drive, and provides output signal for microphone.

30, communications headset as claimed in claim 28 is characterized in that, described suspension rod is a rigidity.

31, communications headset as claimed in claim 30 is characterized in that, the described suspension rod of part is a rigidity, and part described suspension rod is flexible.

32, communications headset as claimed in claim 28 is characterized in that, described first axle and described second axis form first plane, and described first axle and described second axes intersect also form first angle in described first plane.

33, communications headset as claimed in claim 32 is characterized in that, described first angle is spent about 97 degree from about 77.

34, communications headset as claimed in claim 32 is characterized in that, described first angle is approximately 87 degree.

35, communications headset as claimed in claim 32 is characterized in that, with second plane of described first planar quadrature in, described housing and user's ear matches.

36, communications headset as claimed in claim 35 is characterized in that, described headset is applied symmetrically to user's left ear or auris dextra.

37, communications headset as claimed in claim 35 is characterized in that, described second plane and described second axis form one in about 23 second angles of spending between about 43 degree.

38, communications headset as claimed in claim 37 is characterized in that, about 33 degree of described second angle.

39, communications headset as claimed in claim 28 further comprises the cable that extends and form the 3rd axis from described housing, it is characterized in that first axle, second axis and the 3rd axis coplane.

40, communications headset as claimed in claim 28 is characterized in that, described earphone comprises opening and is suitable for flexible material with ear canal.

41, communications headset as claimed in claim 40 is characterized in that, described flexible material is plastics.

42, communications headset as claimed in claim 40 is characterized in that, described flexible material is a silicones.

43, communications headset as claimed in claim 40 is characterized in that, described opening comprises columniform hard tube, and described flexible material comprises the compressible foam around described pipe.

43, communications headset as claimed in claim 28 is characterized in that, described earphone can relative ambient sound provide the soundproof effect of 15dB at least with described housing in audio range.

44, communications headset as claimed in claim 43 is characterized in that, described earphone in audio range relatively ambient sound provide 15 to the soundproof effect of 25dB.

45, communications headset as claimed in claim 28 further comprises flexible ear support.

46, communications headset as claimed in claim 28 is characterized in that, the described earphone electrophone of will communicating by letter separately is bearing on the user.

47, communications headset as claimed in claim 28 is characterized in that, the sound around at least some is passed described driver by fax.

48, communications headset as claimed in claim 28 is characterized in that, described microphone can described relatively driver signal sound insulation, thereby reduces the echo to the far-end speaker.

49, a kind of communications headset comprises:

First housing that is used for first ear, described first housing comprises first loudspeaker drive;

Second housing that is used for second ear, described second housing comprises second loudspeaker drive;

Be inserted into first nozzle in described first duct, described first nozzle links to each other with described first housing;

Be inserted into second nozzle in described second duct, described second nozzle links to each other with described second housing;

The first sound insulation earphone that links to each other with described first nozzle, described first earphone can relative ambient sound provide the soundproof effect of 15dB at least with described housing in audio range;

The second sound insulation earphone that links to each other with described second nozzle, described second earphone can relative ambient sound provide the soundproof effect of 15dB at least with described second housing in audio range; And

Microphone.

50, communications headset as claimed in claim 49, further comprise positioner, the secondary signal that arrives first signal of described first loudspeaker drive and arrive described second loudspeaker drive in order to operation to be to produce a kind of sensation, and promptly sound is from many from another direction recently of a direction.

51, communications headset as claimed in claim 50 is characterized in that, described positioner comprises one of the following step at least: processing horizontal difference, processing differs, and handles interaural difference.

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