CN204681561U - Interior concha auriculae formula earphone - Google Patents

Abstract

The application relates to interior concha auriculae formula earphone.Described interior concha auriculae formula earphone comprises: the shell wherein with driver, and described shell comprises driver rear wall below and the rear space between driver and rear wall, and wherein said driver converts sound to electronic audio signal; Room dividing plate in rear space, described room dividing plate limits driver back cavity volume below, and wherein said room dividing plate comprises acoustical ports and low sound hole; Draft chamber between room dividing plate and rear wall, wherein said draft chamber is coupled with back cavity volume acoustics by acoustical ports; And the bass conduit extended between low sound hole and draft chamber, wherein said draft chamber is coupled with back cavity volume acoustics by bass conduit.The problem that an embodiment of the present disclosure solves provides a kind of interior concha auriculae formula earphone with the acoustical behavior of improvement.Concha auriculae formula earphone in the acoustical behavior with improvement is there is provided according to a purposes of an embodiment of the present disclosure.

Description

Interior concha auriculae formula earphone

Technical field

Disclose the embodiment relating to headphone.More specifically, disclose the embodiment relating to a kind of interior concha auriculae formula earphone, this interior concha auriculae formula earphone has rear space (rearspace), and described rear space is divided into back cavity volume (back volume), has the bass conduit (bass duct) of acoustic mass (acoustic mass) and draft chamber.In an embodiment, draft chamber can be coupled with rear chamber sum bass conduit acoustics and can terminate to surrounding environment by single rear port (rear port).

Background technology

Interior concha auriculae formula earphone, is also referred to as earplug, is the headphone be placed in external ear.In use, interior concha auriculae formula earphone towards duct, but can not insert duct usually.Because interior concha auriculae formula earphone is generally not sealed in duct, therefore sound can leak from earphone and not arrive duct.In addition, the sound from surrounding environment can advance in duct around earphone, thus acoustical behavior of demoting further.Because acoustical leakage can depend on the anatomical structure of user's ear, therefore, the acoustical behavior of concha auriculae formula earphone can be inconsistent in all service conditions.

Utility model content

An object of an embodiment of the present disclosure is to provide a kind of interior concha auriculae formula earphone with the acoustical behavior of improvement.

According to an embodiment, provide a kind of interior concha auriculae formula earphone, it is characterized in that, described interior concha auriculae formula earphone comprises: the shell wherein with driver, described shell comprises driver rear wall below and the rear space between driver and rear wall, and wherein said driver converts sound to electronic audio signal; Room dividing plate in rear space, described room dividing plate limits driver back cavity volume below, and wherein said room dividing plate comprises acoustical ports and low sound hole; Draft chamber between room dividing plate and rear wall, wherein said draft chamber is coupled with back cavity volume acoustics by acoustical ports; And the bass conduit extended between low sound hole and draft chamber, wherein said draft chamber is coupled with back cavity volume acoustics by bass conduit.

According to another embodiment, provide a kind of interior concha auriculae formula earphone, it is characterized in that, described interior concha auriculae formula earphone comprises: have outer peripheral driver, described driver converts sound to electronic audio signal, and the shell around described outward flange, described shell seals the rear space between driver and rear wall, wherein said rear space is included in the back cavity volume in driver dead astern, draft chamber between back cavity volume and rear wall, and the bass conduit extended between the low sound hole and the catheter port at place of draft chamber at back cavity volume place, wherein said draft chamber is coupled by bass conduit with the acoustical ports that the low sound hole at back cavity volume place separates with back cavity volume acoustics, and wherein said draft chamber is coupled with surrounding environment acoustics by the vent port in rear wall.

According to another embodiment, provide a kind of interior concha auriculae formula earphone, it is characterized in that, described interior concha auriculae formula earphone comprises: have outer peripheral driver, described driver converts sound to electronic audio signal; And the shell around described outward flange, described shell has the rear wall of the rear space sealed between driver and rear wall, the bass conduit that wherein said rear space is included in driver back cavity volume below, draft chamber between back cavity volume and rear wall and extends between the low sound hole and the catheter port at place of draft chamber at back cavity volume place, and wherein said rear wall comprises the visible opening of sole external.

Disclose the embodiment of interior concha auriculae formula earphone.In an embodiment, interior concha auriculae formula earphone comprises the shell keeping driver, and described driver converts sound to electronic audio signal (electrical audiosignal).Shell can have the rear wall after driver and can limit rear space between driver and rear wall.Room dividing plate can be arranged in rear space, and rear space can be divided into several space, comprises driver back cavity volume below, draft chamber between room dividing plate and rear wall and bass conduit.Room dividing plate can also limit one or more port or hole, and such as the acoustical ports that back cavity volume is coupled with draft chamber's acoustics, and the bass conduit at back cavity volume place extends to the low sound hole of the catheter port in draft chamber from it.Rear wall can comprise vent port, and draft chamber is coupled with surrounding environment acoustics by vent port.In addition, vent port can be the only acoustics opening in housing back wall.Therefore, the Part I of the sound launched by driver can propagate through acoustical ports and the Part II of sound can propagate through bass conduit, and voice parts was met before leaving shell by vent port in draft chamber.

Room dividing plate can comprise the front surface towards driver and the rear surface towards rear wall.Front surface can limit rear room at least in part and rear surface can limit draft chamber at least in part.In addition, the conduit profile in rear surface can bass conduit between delimit chamber's dividing plate and rear wall.In an embodiment, conduit profile follow between low sound hole and bass port rear surface on curve (curvilinear) path.Bass port can across draft chamber apart from acoustical ports location, and such as port separately can be less than 1mm, makes to enter draft chamber with the sound of catheter port in roughly the same position through acoustical ports.

In an embodiment, the one or more port in earphone or hole are covered by acoustical material.Such as, acoustical ports, catheter port and/or vent port can be covered by Web materials.Capped or not capped each port can present acoustic impedance based on the geometry of port, cladding material etc.In an embodiment, acoustical ports has the acoustic impedance of the acoustic impedance higher than both catheter port and vent port.Such as, acoustical ports can have the acoustic impedance of 25 times of the acoustic impedance being at least vent port.The acoustic impedance of vent port can lower than about 10Rayl, thus not hinder sound to propagate towards surrounding environment substantially.But owing to covering port and reducing the protectiveness guard shield of possibility of exterior materials from surrounding environment invasion earphone, relative to outdoor, vent port or other port any or hole can have the acoustic impedance of non-zero.

Except providing acoustics network in earphone, the one or more rooms formed by room dividing plate can also be kept for the parts of acoustic control.Such as, microphone can be arranged in draft chamber, to sense the sound from surrounding environment.Therefore, microphone can provide can by earphone process in case realize effective noise control signal.

Concha auriculae formula earphone in the acoustical behavior with improvement is there is provided according to a technique effect of an embodiment of the present disclosure.

More than summarize the full list not comprising all aspects of the utility model.Expection the utility model comprise all can from each side of above general introduction and following embodiment the open and system and method for all appropriate combination practices especially in the claim submitted to together with the application in claimed those.This combination has the not concrete specific advantages set forth in above general introduction.

Accompanying drawing explanation

Fig. 1 is according to the utility model embodiment, the perspective view in the rear portion of shell with the earphone of multiple acoustics opening.

Fig. 2 is according to the utility model embodiment, the cross-sectional view in the rear portion of shell with the earphone of multiple acoustics opening.

Fig. 3 is according to the utility model embodiment, the schematic diagram in the rear portion of shell with the earphone of multiple acoustics opening.

Fig. 4 is according to the utility model embodiment, the perspective view in the rear portion of shell with the earphone of single acoustics opening.

Fig. 5 is according to the utility model embodiment, the decomposition view in the rear portion of shell with the earphone of single acoustics opening.

Fig. 6 is according to the utility model embodiment, the cross-sectional view in the rear portion of shell with the earphone of single acoustics opening.

Fig. 7 is the front perspective view of the room dividing plate according to the utility model embodiment.

Fig. 8 is the rear view of the room dividing plate according to the utility model embodiment.

Fig. 9 is according to the utility model embodiment, the schematic diagram in the rear portion of shell with the earphone of single acoustics opening.

Figure 10 is according to the utility model embodiment, the schematic diagram in the rear portion of shell with the earphone of single acoustics opening.

Embodiment

This application claims the U.S. Provisional Patent Application No.62/018 submitted on June 27th, 2014, the rights and interests of 435, and the application is by reference in conjunction with this temporary patent application.

Embodiment of the present utility model describes the headphone of the audio signal for playing the outside generation received from external audio source.But although some embodiments specifically describe about interior concha auriculae formula earphone, embodiment is not limited thereto, and some embodiment can also be applicable to other purposes.Such as, one or more embodiment described below can be integrated in the miscellaneous equipment in sound guiding ear or device, such as usual relative to earphone in the duct of duct sealing.

In various embodiments, be described with reference to accompanying drawing.But not have in the middle of these details one or more also can realize for some embodiment, or combine with other known method and configuring.In the following description, set forth various detail, such as concrete configuration, dimension and process, to provide the thorough understanding to embodiment.In other cases, well-known process and manufacturing technology do not describe with specific details, to avoid unnecessarily fuzzy description.Run through this specification, the reference of " a kind of embodiment ", " embodiment " etc. is referred to that described specific feature, structure, configuration or feature are included at least one embodiment.Therefore, phrase " a kind of embodiment ", " embodiment " etc. run through the appearance of this specification in each position and not necessarily refer to identical embodiment.In addition, specific feature, structure, configuration or feature can combine in any suitable manner in one or more embodiments.

On the one hand, interior concha auriculae formula earphone comprises the shell with rear space, and this rear space is divided into back cavity volume, bass conduit and the draft chamber between driver and rear wall.Draft chamber can be coupled with back cavity volume acoustics by both acoustical ports and bass conduit.In addition, draft chamber can be coupled with surrounding environment acoustics by vent port.The sound launched by driver can propagate through acoustical ports and bass conduit, to meet in draft chamber when being discharged into surrounding environment by identical vent port.Because vent port may be the unique opening in rear wall, such as, in the rear wall visible opening in single outside, so the possibility of exterior materials invasion earphone can reduce.

On the one hand, the room dividing plate in shell can limit the geometry of back cavity volume, bass conduit and draft chamber.Therefore, room dividing plate can control the acoustic mass of volume in earphone by size design and configuration.In addition, room dividing plate can limit the acoustic path that driver is coupled with surrounding environment acoustics.Acoustic path can comprise the acoustical ports between back cavity volume and draft chamber, the low sound hole between back cavity volume and bass conduit, bass port between bass conduit and draft chamber or export to the vent port of surrounding environment.Therefore, room dividing plate can control the acoustic impedance of each acoustic path by size design and configuration.The acoustical material that the acoustic impedance in earphone inner port and hole can cover port by one or more is changed, such as net.Therefore, the room dividing plate of earphone and other acoustic element can be configured to realize driver expectation resonance and the frequency response of earphone and bass response be tuned to the level expected.Because the acoustical behavior expected can utilize the acoustics real-time performance be assemblied in earphone rear space, so can be eliminated from the bass pipeline of rear space radiation, and earphone can compact package.

With reference to figure 1, show according to the utility model embodiment, the perspective view in the rear portion of shell with the earphone of multiple acoustics opening.Earphone 100 can be configured to be connected to electronic equipment, such as portable electronic device or can another equipment of audio plays, video or other media.Such as, earphone 100 can comprise other electric power connector of audio jack or electrical connection electronic equipment and cable 102.Thus the outside audio signal produced can be transferred to the driver in the shell 104 of earphone 100 by cable 102.Driver can convert sound to electronic audio signal.In an alternative embodiment, earphone 100 combining wireless interface, to receive the outside audio signal generated via the wireless connections with external amplifier.

Shell 104 can be configured to be placed in the external ear of ear by size design, and without the need to sealing the duct of ear.Thus, shell 104 can comprise be configured to towards duct antetheca 106 and be configured to the rear wall 108 of profile of approximate external ear, make earphone 100 resist movement from ear.When being placed in external ear, the driver in shell 104 can be launched sound forward by acoustics opening 110 before in antetheca 106 and be entered duct.Except launching sound by front acoustics opening 110 in direction, the sound generated by driver can also be launched in backward directions by tuned port 112 and bass port one 14.

With reference to figure 2, show according to the utility model embodiment, the cross-sectional view in the rear portion of shell with the earphone of multiple acoustics opening.Antetheca 106 can be defined as the part that shell 104 extends forward from driver 202, and rear wall 108 can be defined as the part that shell 104 extends at driver 202 below.Such as, transverse plane can with the orthogonality of center shaft process of driver 202, and antetheca 106 can axially be positioned at part before transverse plane by shell 104, and rear wall 108 axially can be positioned at transverse plane part below by shell 104.Rear room 204 can in shell 104 between driver 202 and rear wall 108.Therefore, the tuned port 112 formed by the rear wall 108 in rear room 204 can be pointed at the sound that backward directions are launched from driver 202, and point to the acoustical passage 206 entering acoustic conduit 208 from rear room 204.The sound pointing to acoustical passage 206 can propagate into bass port one 14 by acoustic conduit 208.

With reference to figure 3, show according to the utility model embodiment, the schematic diagram in the rear portion of shell with the earphone of multiple acoustics opening.The first voice parts 302 pointing to tuned port 112 and the second voice parts 304 pointing to acoustical passage 206 can be comprised by driver 202 sound be transmitted in rear room 204.More particularly, the first voice parts 302 passes through the primary importance of rear wall 108, i.e. tuned port 112, output to surrounding environment, and the second voice parts 304 propagates through acoustic conduit 208, by the second place of rear wall 108, namely bass port one 14, outputs to surrounding environment.First voice parts 302 and the second voice parts 304 did not mix be released to surrounding environment after room 204 or from shell 104 after leaving before in earphone 100.Thus rear wall 108 comprises the visible opening at least two outsides corresponding to tuned port 112 and bass port one 14, and therefore exterior materials, such as dust, chip and other particle, earphone 100 can be entered in multiple position by rear wall 108.

After the structure being described in rear wall 108 earphone 100 with multiple acoustics opening and acoustic function, below describe the embodiment by concentrating on the earphone 100 with draft chamber, wherein draft chamber receives surrounding environment by the single acoustics openend in rear casing wall.But, be to be understood that, embodiment of the present utility model described herein is not mutually repel, and therefore, within scope of the present utility model, the feature in rear wall 108 with the earphone 100 of multiple acoustics opening can combine with the feature of the earphone 100 in rear casing wall with single acoustics opening.

With reference to figure 4, the perspective view of the earphone that show and describe embodiment according to this, there is single acoustics opening in the rear portion of shell.Earphone 100 can be configured to pass cable 102 and receive the outside audio signal that generates and the sound driver 202 that electronic audio signal converts in shell 104 play by acoustics opening 110 before in antetheca 106.Earphone 100 can have size design and be configured to the shell 104 that is placed in ear external ear.Thus in use, sound can be played in ear by front acoustics opening 110.

Be similar to above with reference to the embodiment described in Fig. 1 and 2, driver 202 can also launch sound in the backward directions towards rear wall 108.But in an embodiment, together with rear room 204, the acoustic mass of acoustic conduit 208 can be integrated in driver 202 rear wall 108 below.More particularly, sound can route by being axially arranged in driver 202 below and at the acoustics network of rear wall 108.The comparing to indicate of Fig. 1 and the embodiment of earphone 100 shown in 4 can allow compacter earphone 100 in conjunction with acoustics network by this way in rear wall 108.

With reference now to Fig. 4, the sound launched at rear portion by driver 202 can be released from shell 104 by the vent port 402 rear wall 108.More particularly, rear wall 108 can comprise outside visible acoustics opening, and by this opening, the sound launched at rear portion by driver 202 and surrounding environment cross.That is, multiple acoustical passage can be routed to and meet in shell 104, and multiple vent port can be ventilated from shell 104 in single visible position unification.Therefore, in an embodiment, vent port 402 provides unique acoustics opening in rear wall 108.

With reference to figure 5, show according to the utility model embodiment, the decomposition view in the rear portion of shell with the earphone of single acoustics opening.The all parts of earphone 100 can align along earphone axle 502.Earphone axle 502 can be restricted to the axle at the center through driver 202.That is, the outward flange 504 of driver 202 can be axially aligned with earphone axle 502.Such as, in an embodiment, outward flange 504 is circular, and centered by earphone axle 502.In addition, outward flange 504 can be concentric with the barrier film 506 of driver 202, makes to be propagated along earphone axle 502 at first by the sound of barrier film 506 in direction transmitting forward or backward.The antetheca 106 of shell 104 can be positioned at the front of driver 202 along earphone axle 502, and the rear wall 108 of shell 104 can be positioned at the rear of driver 202 along earphone axle 502.

In an embodiment, one or more parts can in shell 104 between driver 202 and rear wall 108, the volume in space in shell 104 is divided into multiple room or volume.Such as, room dividing plate 508 can between driver 202 and rear wall 108.Room dividing plate 508 can have the shape that meets shell 104 and/or can 104 in such a way, and several volumes or room are defined between the surface of room dividing plate 508 and the surface of driver 202 or rear wall 108.Such as, room can limit between driver 202 and the front surface of room dividing plate 508.The rear surface of room dividing plate 508 can have conduit profile 510, such as recessed section, and this section extends to form groove or passage along rear surface along a paths.Conduit profile 510 can coordinate the acoustical passage to form the acoustic mass with air with the inner surface of rear wall 108, such as bassoon.Several volumes can be put into further by various port, such as acoustical ports 512 or low sound hole 514, fluid communication with each other, i.e. acoustics coupling each other.Because several independently volume can be limited by one or more rooms dividing plate 508, so the frequency response of acoustics network and bass response can be changed by the shape changing dividing plate.In addition, because each volume can by one or more port or the coupling of hole acoustics, therefore the frequency response of acoustics network and bass response can be changed by the acoustic impedance in control port and hole.Thus mesh element can cover port to change their acoustic impedance.Such as, Acoustic web 516 can cover acoustical ports 512 and ventilated net 518 can cover vent port 402.Net can comprise the edge coordinated with the corresponding edge of port, makes the cross-sectional area of port be filled to cover port.

With reference to figure 6, show according to the utility model embodiment, the cross-sectional view in the rear portion of shell with the earphone of single acoustics opening.Rear space can comprise the whole volume between the driver 202 of earphone 100 and rear wall 108.Therefore, rear space can by the space boundary surrounded by the apparent surface of driver 202 and rear wall 108.Shell 104 can its outer edges 504 peripheral support driver 202, make the front of driver 202 towards antetheca 106 and driver 202 below towards rear space.Thus the rear wall 108 of shell 104 can seal driver 202 rear space below.Therefore, as discussed above, when the audio signal generated when outside is transported to driver 202 by cable 102 (cable can extend through rear space to be attached to driver 202), the signal of telecommunication can be converted to sound by driver 202, and sound is transmitted into forward front acoustics opening 110 backward launched in rear space.

In an embodiment, room dividing plate 508 to reside in rear space and comprises shape rear space being divided into one or more volume.In an embodiment, room dividing plate 508 and/or can be able to be the multiple rooms dividing plate 508 segmenting rear space by multiple assembling parts, but in order to easy understand, room dividing plate 508 consists essentially of single main body following being described to, and its morphology creates in space in the wings by one or more port and/or the room of hole acoustics coupling and the acoustics network of conduit.

Room dividing plate 508 can comprise the front surface 602 towards driver 202.Front surface 602 can be limited to the back cavity volume 604 of driver 202 below and between driver 202 and room dividing plate 508.Back cavity volume 604 can be the sub-volume of rear space.Back cavity volume 604 can consist essentially of the cavity of the volumentary geometry shape with the surface depending on driver 202, rear wall 108 and room dividing plate 508.That is, those surfaces can surround and therefore limit back cavity volume 604.Such as, room dividing plate 508 can have the concave anterior surface 602 of the corresponding male portion limiting back cavity volume 604.That is, the space envelope of back cavity volume 604 can be the negative space meeting front surface 602.As by surrounding, the surface of this volume limits, the size and dimension of back cavity volume 604 can be important for the overall acoustical behavior of earphone 100.More particularly, the cavity of back cavity volume 604 can the frequency response of tuning earphone 100.Especially, the resonance of earphone 100 in the frequency range of such as about 2kHz to about 3kHz can be determined in driver 202, the size of back cavity volume 604 that formed between rear wall 108 and room dividing plate 508, i.e. open ear (open ear) gain.Duct usually works and has specific resonance frequency when open and have different resonance frequencys when closing just as resonator.The acoustic response being positioned at ear drum membrane when duct is opened is called as open ear gain.Normally user is preferred for the resonance frequency of about 2kHz to 3kHz.Back cavity volume 604 can be shaped as the resonance of earphone 100 be tuned to frequency within the scope of this.More specifically, when rear wall 108 or room dividing plate 508 are shaped as reduction back cavity volume 604, the frequency of open ear gain can increase.As an example, back cavity volume 604 can be reduced by the radius reducing the rear wall 108 laterally surrounding back cavity volume 604 about earphone axle 502.As an alternative, back cavity volume 604 can by reducing to reduce along the distance of earphone axle 502 between room dividing plate 508 and driver 202.On the contrary, when rear wall 108 or room dividing plate 508 are shaped as increase back cavity volume 604, the frequency of open ear gain can reduce.As an example, back cavity volume 604 can be increased by the radius increasing the rear wall 108 laterally surrounding back cavity volume 604 about earphone axle 502.As an alternative, back cavity volume 604 can be increased by the distance increased along earphone axle 502 between room dividing plate 508 and driver 202.Thus the geometry of back cavity volume 604 can be adjusted, with the resonance of tuning earphone 100 and acoustical behavior.

Room dividing plate 508 can also limit and connect back cavity volume 604 and the one or more port or the hole that are positioned at the one or more additional volume after room dividing plate 508 from back cavity volume 604.Additional volume can be other sub-volume of rear space.Rear space in shell 104 can be subdivided into the bass conduit 606 comprising and being coupled with back cavity volume 604 acoustics by low sound hole 514.In an embodiment, low sound hole 514 can be the hole (see Fig. 5) formed by room dividing plate 508.But low sound hole 514 can also be the port (being similar to the acoustical ports 512 shown in Fig. 5) limited between the outward flange and the inner surface of rear wall 108 of room dividing plate 508.Therefore, low sound hole 514 can provide the passage connecting back cavity volume 604 and bass conduit 606.

Be similar to back cavity volume 604, bass conduit 606 can be defined as the volume in the space between the rear rear surface 608 of room dividing plate 508 and the inner surface of rear wall 108.Bass conduit 606 can be the sub-volume of rear space.That is, bass conduit 606 can consist essentially of the cavity of the volumentary geometry shape of the surface having and depend on rear wall 108 and the room dividing plate 508 surrounding bass conduit 606.Such as, room dividing plate 508 can be limited to the guide-tube structure that low sound hole 514 extends away from back cavity volume 604.Except limiting conduit, room dividing plate 508 can also limit catheter port 612 at the end of bass conduit 606.Such as, catheter port 612 can limit between rear surface 608 and rear wall 108, and they can in conjunction with to create port shape.The surface limiting the cavity of bass conduit 606 can be configured as the bass response of tune driver 202 by size design.Can be modified just as the dimension of room dividing plate 508 to control the geometry of back cavity volume 604 and the resonance controlling earphone 100 thus, the dimension of room dividing plate 508 can be modified, and also controls the bass response of earphone 100 with the geometry controlling bass conduit 606 thus.In an embodiment, by bass conduit 606 being configured as the volume of air comprising and serve as corresponding acoustic mass, bass response can be controlled to the frequency being less than 1kHz.

Rear space in shell 104 can also be subdivided into the draft chamber 610 comprised between room dividing plate 508 and rear wall 108.That is, draft chamber 610 can consist essentially of the cavity of the volumentary geometry shape with the surface depending on room dividing plate 508 and rear wall 108.Draft chamber 610 can be the sub-volume of rear space.Draft chamber 610 can be coupled with back cavity volume 604 acoustics by both acoustical ports 512 and bass conduit 606.More particularly, the back cavity volume 604 that tuning earphone 100 resonates can be received in draft chamber 610 by acoustical ports 512 end, and the bass conduit 606 of the bass response of tuning earphone 100 can be received in draft chamber 610 by catheter port 612 end.Thus the sound sent by back cavity volume 604 and bass conduit 606 can enter draft chamber 610 before releasing from shell 104, and met wherein or mix.

Alternatively, draft chamber 610 can at the axis of orientation of earphone axle 502 to being positioned at after acoustical ports 512.Similarly, draft chamber 610 can at the axis of orientation of earphone axle 502 to being positioned at after driver 202.Such as, be positioned at outward flange 504 space below and can form columniform space envelope on the direction of earphone axle 502.Draft chamber 610 can be contained by space envelope, makes whole room volume in the dead astern of driver.Therefore, draft chamber 610 can not add additional transverse dimensions to earphone 100 in the transverse dimensions formed by the outward flange 504 of driver 202.

Sound can depend on the geometry in various interconnect port and hole from back cavity volume 604 to the transmission draft chamber 610.Such as, the acoustic impedance of acoustical ports 512 can be changed by the size or length changing acoustical ports 512 between back cavity volume 604 and draft chamber 610.These dimensions can change by regulating the restriction room dividing plate 508 of acoustical ports 512 and the shape on rear wall 108 surface, to realize the acoustic impedance expected.Except revising the geometry of room dividing plate 508 and rear wall 108, acoustical material can be placed on one or more various port or hole.

In an embodiment, Acoustic web 516 to be arranged on acoustical ports 512 or wherein, to revise the acoustical behavior of earphone 100.Such as, Acoustic web 516 can cover acoustical ports 512, to change the acoustic impedance of acoustical ports 512.In an embodiment, Acoustic web 516 is designed to provide set by acoustic engineering and the acoustical material of the acoustic resistors of having a mind to or filter effect is formed.Such as, Acoustic web 516 can be manufactured into the netted or foamed material filtering some acoustic pressure wave launched towards acoustical ports 512 by driver 202.As an alternative, Acoustic web 516 can be entrant sound, thus does not substantially disturb the transfer voice by acoustical ports 512.In either case, Acoustic web 516 can provide and prevent exterior materials, and such as dust, water or other particle, enter the protective barrier of back cavity volume 604 undesirably from draft chamber 610.

Alternatively, acoustical material can be positioned on catheter port 612 or low sound hole 514 or wherein, to revise the acoustical behavior of earphone 100, or to prevent exterior materials from intruding into bass conduit 606 undesirably.Such as, conduit network (not shown) can cover catheter port 612, to change the acoustic impedance of bass conduit 606.In an embodiment, conduit network is formed with the acoustical material of acoustic resistors that is that have a mind to or filter effect by being designed to provide set by acoustic engineering.Such as, conduit network can be manufactured into the netted or foamed material filtering some acoustic pressure wave launched towards catheter port 612 by bass conduit 606 by driver 202.As an alternative, conduit network can be entrant sound, thus substantially unlike the transfer voice disturbed more by catheter port 612 intrinsic in catheter port 612 geometry.In either case, conduit network can provide and prevent exterior materials, and such as dust, water or other particle, enter the protective barrier of bass conduit 606 undesirably from draft chamber 610.

In an embodiment, vent port 402 can be formed between draft chamber 610 and surrounding environment by rear wall 108.Surrounding environment can be the environment of external environment or earphone 100 outside.Such as, sound can to propagate into the space in user's external ear by vent port 402 or enter the room of user's earphone radio 100 wherein from draft chamber 610.Thus draft chamber 610 can be coupled with surrounding environment acoustics by vent port 402.As mentioned above, vent port 402 can be the unique acoustics opening in rear wall 108, and any sound backwards leaving shell 104 passes through through this opening.Similarly, vent port 402 can form unique visible opening in rear wall 108.That is, earphone 100 can comprise single opening by the rear wall 108 only after the macroscopic outward flange of user 504.

Ventilated net 518 can be positioned on vent port 402 or wherein, to revise the surf zone that sound is sent between draft chamber 610 and surrounding environment by it.Such as, ventilated net 518 can be acoustic window material, this means that it does not affect the acoustical behavior of earphone 100.As an alternative, by changing the acoustic impedance of vent port 402, Acoustic web 518 can revise the acoustical behavior of earphone 100.Such as, the material of ventilated net 518 can be designed to provide set and acoustic resistors that is that have a mind to or filter effect by acoustic engineering, such as, to filter some acoustic pressure wave launched towards vent port 402 by back cavity volume 604, bass conduit 606 and draft chamber 610 by driver 202.In either case, ventilated net 518 can provide and prevent exterior materials, and such as dust, water or other particle, enter the protective barrier of shell 104 undesirably from surrounding environment.

With reference to figure 7, show the front perspective view of the room dividing plate according to the utility model embodiment.As mentioned above, room dividing plate 508 can comprise any geometry in the rear space that is placed between driver 202 and rear wall 108, and rear space is subdivided into Acoustic web.Thus room dividing plate 508 can comprise towards driver 202 and limit the front surface 602 of back cavity volume 604 at least in part.So, front surface 602 can comprise the concave shape extending to summit 704 from the limit 702 near earphone axle 502.Such as, front surface 602 can comprise the conical surface of the base portion circumference that has around limit 702 and the track (locus) on summit 704.As an alternative, front surface 602 can comprise secondary surface, such as extends to the parabolic surface on summit 704 from limit 702.Limit 702 can seal up the inner surface of rear wall 108, such as, bonded by the adhesive between limit 702 and rear wall 108 or be press-fitted.Therefore, front surface 602 can limit a part with the back cavity volume 604 complying with nonreentrant surface.Although front surface 602 can have cone shape, it can be configured as semispherical surface, cube face, pyramid surface similarly, etc.In addition, front surface 602 needs not be recessed, and namely it can be convex or flat.Therefore, front surface 602 can have any shape limiting the back cavity volume 604 giving the acoustical behavior that earphone 100 is expected.

One or more port or hole such as can be formed from front surface 602 to rear surface 608 by room dividing plate 508.Port or hole can be opening or the path of the acoustic calibration of the acoustical behavior strengthening earphone 100.Port in earphone 100 or hole can be any shapes, comprise and tear shape, circle, ellipse, semicircle, polygon, etc.Will be appreciated that, in certain embodiments, the entrance and exit limited in the limit 702 of front surface 602 completely can be had by any opening of room dividing plate 508, shown by low sound hole 514, or the entrance or outlet that are limited by the combination on room dividing plate 508 and such as another surface of rear wall 108 can be had, shown by acoustical ports 512.Therefore, the various room in frames connecting with headphone 100 and the opening of conduit are not will be confined to the geometry shown in figure specially.

In an embodiment, acoustical ports 512 can be from limit 702 along the groove that groove edge 706 extends, to form the opening of saddle on the direction of earphone axle 502.As the above mentioned, limit 702 can seal up the inner surface of rear wall 108, thus provides the airtight opening from the draft chamber 610 of the back cavity volume 604 front side of room dividing plate 508 on the rear side arriving room dividing plate 508 for the sound launched by driver 202.

Room dividing plate 508 can also comprise from front surface 602 to rear surface 608 by the hole that the wall of room dividing plate 508 is formed.Such as, low sound hole 514 can be included in across back cavity volume 604 and/or the hole along the position that front surface 602 and acoustical ports 512 separate by room dividing plate 508.That is, acoustical ports 512 and low sound hole 514 can separate along room dividing plate 508, thus receive and send the different piece of the sound launched by driver 202.Unlike acoustical ports 512, low sound hole 514 can limit between the bore edges 708 in the complete limit 702 at front surface 602, namely low sound hole 514 can be by the opening of room dividing plate 508, hole or hole, instead of the opening limited by the combination of rear wall 108 and groove edge 706.

Conduit profile 510 can form the cross-sectional profile of bass conduit 606 substantially.That is, conduit profile 510 can be the depression section in rear surface 608, and this section extends on the path of such as straight line path or curved path 710, to form the groove along rear surface 608 through certain distance.Therefore, when conduit profile 510 is the semi-cylindrical canyons in rear surface 608, the groove along rear surface 608 can have the semi-cylindrical volume on straight line or length of curve.In addition, bass conduit 606 can limit between this groove and the mating section of rear wall 108.Therefore, bass conduit 606 can seal the air of certain volume, such as the air of semi-cylindrical volume, and this serves as acoustic mass.

With reference to figure 8, show the rear view of the room dividing plate 508 according to the utility model embodiment.Conduit profile 510 can extend, such as, along curved path 710 along at the low starting point at sound hole 514 place and the straight line between the end point of catheter port 612 or length of curve.More particularly, when rear surface 608 is matched with apparent surface, such as rear wall 108, the acoustic mass of bass conduit 606 can become and be enclosed between rear wall 108 in shell 104 and rear surface 608.Thus bass conduit 606 can extend to from the entrance being positioned at low sound hole 514 outlet being positioned at bass port 612 place.

As mentioned above, draft chamber 610 can be positioned at by the acoustical ports 512 of room dividing plate and the catheter port 612 between room dividing plate 508 and rear wall 108.More particularly, sound can be sent in the draft chamber 610 of the earphone 100 assembled by acoustical ports 512 and catheter port 612.In an embodiment, the draft chamber 610 near same position can be entered through the sound of acoustical ports 512 and catheter port 612.Such as, the groove edge 706 partly limiting acoustical ports 512 and the conduit profile 510 partly limiting catheter port 612 across draft chamber 610, or can be separated along the rear surface 608 of room dividing plate 508 by separation gap 802.In an embodiment, separation gap 802 is less than the length of bass conduit 606.In an embodiment, separation gap 802 is less than about 10mm.Such as, separation gap 802 can be less than 1mm, such as about 0.1mm.Thus the sound be transmitted in back cavity volume 604 by driver 202 can be divided and meet in draft chamber 610 and propagated by both acoustical ports 512 and catheter port 612 before being released in surrounding environment by vent port 402.

With reference to figure 9, show according to the utility model embodiment, the schematic diagram in the rear portion of shell with the earphone of single acoustics opening.This schematic diagram contributes to the visual voice path by earphone 100.Earphone 100 can comprise driver 202, and front acoustics opening 110 is pointed in its front, makes the sound forward direction launched by driver 202 enter duct.Driver 202 can also backwards cavity volume 604 backward directions on launch sound, and in order to illustrate, sound can be described to be divided into the first voice parts 902 and the second voice parts 904.First voice parts 902 can propagate through the acoustical ports 512 in room dividing plate 508, to enter draft chamber 610.Second voice parts 904 can propagate through low sound hole 514 in room dividing plate 508 and bass conduit 606 before entering draft chamber 610 along rear surface 608.Therefore, the first voice parts 902 and the second voice parts 904 can enter draft chamber 610 after leaving back cavity volume 604 by respective port or hole, meet wherein or mix.More particularly, the first voice parts 902 and the second voice parts 904 can advance into identical draft chamber 610 what be discharged into surrounding environment.Thus the first voice parts 902 and the second voice parts 904 can be propagated from driver 202 on independent direction, the same position mixing then in draft chamber 610, to be combined into the output sound 906 of being released from earphone 100 by vent port 402.

With reference to Figure 10, show according to the utility model embodiment, the schematic diagram in the rear portion of shell with the earphone of single acoustics opening.Schematic diagram contributes to a kind of mode that visual first voice parts 902 or the second voice parts 904 can follow the zigzag path between back cavity volume 604 and draft chamber 610.But the sound propagated by earphone 100 can follow the zigzag path of any fragment along acoustics network, such as, even from draft chamber 610 to surrounding environment.As mentioned above, the first voice parts 902 can be transmitted in draft chamber 610 by acoustical ports 512 by driver 202.Similarly, the second voice parts 904 can be launched towards low sound hole 514 by driver 202.Second voice parts 904 can be propagated towards catheter port 612 from low sound hole 514 by bass conduit 606, to enter draft chamber 610.In an embodiment, bass conduit 606 is limited by conduit profile 510, and this profile follows the curved path 710 along rear surface 608.Such as, curved path 710 can be have multiple zigzag path turned round, and wherein turning round can be 90 degree or more.Zigzag path can also be included in single that whole path extends and turn round or curve, and wherein total path is at least three times of the linear range between low sound hole 514 and catheter port 612.Such as, bass conduit 606 can along rear surface 608 around earphone axle 502 from low sound hole 514 to adjacent catheter port 612 spiral winding.That is, spiral can along path 710.First voice parts 902 and the second voice parts 904 can be met and be combined into the output sound 906 being discharged into surrounding environment subsequently by vent port 402 in draft chamber 610.

As mentioned above, acoustical ports, hole and conduit dimension can be designed to the acoustical behavior of tuning earphone 100.In addition, additional parts, are such as placed on the net on port and hole, can be used to tuning acoustical behavior.Those skilled in the art can introduce additional parts, to change the acoustic response of acoustics network further, such as by realizing baffle plate or other acoustical material along surface, or hang up in conduit or room.This optional feature can also pass through the propagation of earphone 100 by change sound further.Therefore, in order to compatible with given specification or design parameter, at least one sample to manufacture batch, in the meaning of their tested or assessments, the port in earphone 100, hole, conduit and room are calibrated.In other words, the acoustics network of earphone 100 is not made up of random aperture or groove, but is formed the acoustical behavior revising earphone 100 in the mode of the resonance of tuning earphone 100, frequency response and bass response wittingly.Acoustically tuned parameter can be come tuning by the change of above-mentioned various structure.Now by point out in these parameters some, but should be appreciated that the following discussion to certain acoustic feature can be changed and is not therefore to limit the utility model in the scope of this description.

In an embodiment, each hole of earphone 100 and port can comprise specific acoustic impedance.Acoustic impedance affects sound and how to propagate through acoustic medium, such as air, and therefore, is useful for the tuner parameters as the resonance frequency affecting such as earphone 100.Acoustic impedance can be determined based on the geometry in port or hole and material and by the geometry of another parts (such as Acoustic web 516 or ventilated net 518) of a masking aperture port part and material.Thus the acoustic impedance of hole or port can be tuning according to expectation.

In an embodiment, the acoustic impedance of the Acoustic web 516 on acoustical ports 512 and/or acoustical ports 512 is tuned to the acoustic impedance of the ventilated net 518 on higher than vent port 402 and/or vent port 402.Such as, acoustical ports 512 can have less diameter than vent port 402, such as, or Acoustic web 516 can have higher net surface than vent port 402 and amass the ratio with port cross-sectional area, higher bulk density (packing density).Thus, can more be subject to larger resistance than the sound transmission by vent port 402 by the sound transmission of back cavity volume 604, make the sound entering draft chamber 610 freely be discharged into surrounding environment.In an embodiment, the acoustic impedance of acoustical ports 512 and/or Acoustic web 516 can than at least many 25 times of the acoustic impedance of vent port 402 and/or ventilated net 518.Such as, the acoustic impedance of acoustical ports 512 and/or Acoustic web 516 can be 50 to 100 times of the acoustic impedance of vent port 402 and/or ventilated net 518.

In earphone 100, the acoustic impedance in other port and hole can be tuning similarly.Such as, conduit network on catheter port 612 and/or catheter port 612 also can have acoustic impedance, and in an embodiment, the acoustic impedance of catheter port 612 and/or conduit network can be tuned to the acoustic impedance higher than vent port 402 and/or ventilated net 518.On the contrary, the acoustic impedance of catheter port 612 and/or conduit network can be tuned to the acoustic impedance lower than acoustical ports 512 and/or Acoustic web 516.

Each room in earphone 100 or volume also can comprise acoustic impedance.Such as, bass conduit 606 can have based on the acoustic mass of bass conduit 606 and acoustics loss (such as sound through bass conduit 606 time the viscosity that occurs and thermal losses) acoustic impedance.As mentioned above, bass conduit 606 can contain the air of the certain volume serving as acoustic mass.Acoustic mass can be conceptualized as the quality of the barrier film 506 adding driver 202 to.Therefore, acoustic mass can based on the geometry determination size of bass conduit 606, to affect resonance and the bass response of driver 202.Such as, the acoustic mass of bass conduit 606 is higher, and the resonance of earphone 100 is lower and bass is more.And therefore but the size of the acoustic mass of bass conduit 606 can be limited, because driver 202 must even as big as driving acoustic mass, cost and package dimension are considered to select force actual restriction to driver.Once select suitable acoustic mass, to create expectation resonance for actual actuator 202 and bass response, the geometry of bass conduit 606 just can be optimised, to be applicable to being placed in available rear space.Such as, in order to the value that acoustic mass nail is being expected, when the length of bass conduit 606 be shortened be applicable to being placed on room dividing plate 508 below time, the area of conduit profile 510 must reduce.But the reduction of bass conduit 606 size becomes and limited by viscosity and thermal losses, this increases pro rata with the inverse square of conduit profile 510 area roughly, increases the acoustic impedance of bass conduit 606 thus.Therefore, conduit size and compromise between the acoustical behavior of earphone size and bass conduit 606 thus can exist.In an embodiment, bass conduit 606 can be dimensioned to the twice making to be approximately the acoustics loss by vent port 402 by the acoustics loss of bass conduit 606.This can provide the compact earphone of the bass response with expectation.Thus the acoustic impedance of bass conduit 606 can be greater than the acoustic impedance of the ventilated net 518 of vent port 402 and/or covering vent port 402.In an embodiment, the acoustic impedance that bass conduit 606, vent port 402 and/or ventilated net 518 are respective can be minimised as and be approximately zero as closely as possible, to maintain the acoustic impedance being less than acoustical ports 512 or Acoustic web 516.

Even if when the acoustic impedance of port, hole or volume is minimized wherein, acoustic impedance also still can be greater than zero, to realize attractive in appearance or other functional purpose.Such as, net can cover port, to provide the visual differentiation to port for aesthetic reasons, and therefore, even if use has little net surface amass the net with port cross-sectional surface area ratio, be such as less than about 75%, the acoustic impedance of port also can be greater than zero.The similar covering (shrouding) of port may be used for reducing exterior materials and will enter the functional purpose of the possibility of earphone rear space.Such as, as mentioned above, vent port 402 and/or ventilated net 518 can be entrant sounds substantially.Such as, the acoustic impedance of vent port 402 and/or ventilated net 518 can be about 10Rayl, or less magnitude.More particularly, the ventilated net 518 on vent port 402 can have it and be designed and sized to opposing dust, chip, sand or other particle and enter but sound provided to multiple openings of minimum resistance.Multiple opening can have about 300 microns or less effective diameter.Such as, multiple opening can have the effective diameter of about 200 microns, thus makes them be small enough to resist most of grains of sand to enter, but has the acoustic impedance being approximately zero relative to the acoustic impedance of ambient atmosphere.In an embodiment, vent port 402 can be uncovered and particle enters back cavity volume 604 and bass conduit 606 can be resisted by the Acoustic web 516 on acoustical ports 512 and/or the conduit network on catheter port 612.In another kind of embodiment, bass conduit 606 can not comprise conduit network, but can be tortuous, makes the particle being entered catheter port 612 by draft chamber 610 can not arrive back cavity volume 604 by low sound hole 514 1 tunnel.Therefore, vent port 402 and bass port 612 can be the passages opened be uncovered.Thus will be appreciated that, the port of earphone 100 and hole can be capped or be uncovered, to create the acoustic impedance of expectation and to reduce the possibility that particle enters back cavity volume 604.

Still with reference to Figure 10, in an embodiment, earphone can include source noise control element, such as microphone, analog circuit or digital signal processing section part, to reduce undesired ambient noise.More particularly, environment or reference microphone 1002 can be arranged in draft chamber 610, towards vent port 402 and/or surrounding environment.Can receive external voice from surrounding environment with reference to microphone 1002 and sound be converted to the signal of telecommunication being supplied to signal processing circuitry, this signal processing circuitry can in the inside of earphone 100 or outside.Signal processing circuitry can use adaptive algorithm to analyze external sound waveform and or phase shift or inversion waveforms, to create offseting signal.Then, offseting signal can be supplied to driver 202, or is supplied to the extension speaker being arranged in earphone 100, makes sound when advancing towards duct, produces the counteracting sound of a destructive interference external sound.The volume of perceptible outside noise can correspondingly reduce.In addition, error microphone 1004 can be included in earphone 100, such as, in inside or the outside of antetheca 106, and can point to the ear of user.Error microphone 1004 can sense sound and return feedback signal to signal processing circuitry, the judgement that signal processing circuitry can be cancelled how good based on outside noise or the adjustment added noise cancellation signal in view of other sound quality feature determined from feedback signal.

In an embodiment, can use in phone application with reference to one or two in the middle of microphone 1002 or error microphone 1004.More particularly, earphone 100 can comprise can be positioned at the inner or outside microphone of shell 104 (such as with reference to microphone 1002), to serve as the voice pickup receiving user speech.In phone service condition, the sound received can be converted to the signal of telecommunication by microphone, for further process.

In specification above, with reference to its concrete exemplary embodiment, the utility model is described.Obviously, when do not deviate from the utility model of setting forth as following claim more broad spirit and scope, various amendment can be carried out to it.Thus specification and accompanying drawing should be considered to be in illustrative meaning instead of binding meaning.

Claims (20)

1. in, a concha auriculae formula earphone, is characterized in that, described interior concha auriculae formula earphone comprises:

Wherein have the shell of driver, described shell comprises driver rear wall below and the rear space between driver and rear wall, and wherein said driver converts sound to electronic audio signal;

Room dividing plate in rear space, described room dividing plate limits driver back cavity volume below, and wherein said room dividing plate comprises acoustical ports and low sound hole;

Draft chamber between room dividing plate and rear wall, wherein said draft chamber is coupled with back cavity volume acoustics by acoustical ports; And

The bass conduit extended between low sound hole and draft chamber, wherein said draft chamber is coupled with back cavity volume acoustics by bass conduit.

2. interior concha auriculae formula earphone as claimed in claim 1, it is characterized in that, described rear wall comprises vent port, and wherein said draft chamber is coupled with surrounding environment acoustics by described vent port.

3. interior concha auriculae formula earphone as claimed in claim 2, it is characterized in that, the Part I of the sound launched by driver propagates through acoustical ports and the Part II of described sound propagates through bass conduit, and wherein Part I and Part II met before leaving shell by vent port in draft chamber.

4. interior concha auriculae formula earphone as claimed in claim 3, it is characterized in that, described vent port is the unique acoustics opening in rear wall.

5. interior concha auriculae formula earphone as claimed in claim 3, it is characterized in that, described interior concha auriculae formula earphone also comprises the catheter port in the dividing plate of described room, and wherein said bass conduit extends between the low sound hole and the catheter port at place of draft chamber at back cavity volume place.

6. interior concha auriculae formula earphone as claimed in claim 5, it is characterized in that, described room dividing plate is included in the rear surface between low sound hole and catheter port with conduit profile, the bass conduit of described conduit contour limit in the rear between surface and described rear wall.

7. interior concha auriculae formula earphone as claimed in claim 6, it is characterized in that, described conduit profile follows the curved path on rear surface.

8. interior concha auriculae formula earphone as claimed in claim 7, it is characterized in that, catheter port and acoustical ports separate along described draft chamber and are less than 1mm.

9. interior concha auriculae formula earphone as claimed in claim 3, it is characterized in that, described interior concha auriculae formula earphone also comprises the Acoustic web covering acoustical ports, wherein said Acoustic web has the first acoustic impedance, wherein said bass conduit has the second acoustic impedance, and wherein the second acoustic impedance is less than the first acoustic impedance.

10. interior concha auriculae formula earphone as claimed in claim 9, it is characterized in that, described interior concha auriculae formula earphone also comprises the ventilated net covering vent port, and wherein said ventilated net has the 3rd acoustic impedance, and wherein the 3rd acoustic impedance is less than the second acoustic impedance.

11. interior concha auriculae formula earphones as claimed in claim 10, it is characterized in that, the first acoustic impedance is at least 25 times of the 3rd acoustic impedance.

12. interior concha auriculae formula earphones as claimed in claim 11, it is characterized in that, the 3rd acoustic impedance is less than 10Rayl, and wherein said ventilated net comprises multiple net openings with the respective diameter being less than 300 microns.

13. interior concha auriculae formula earphones as claimed in claim 12, it is characterized in that, described interior concha auriculae formula earphone also comprises the microphone being arranged in draft chamber.

In 14. 1 kinds, concha auriculae formula earphone, is characterized in that, described interior concha auriculae formula earphone comprises:

Have outer peripheral driver, described driver converts sound to electronic audio signal; And

Shell around described outward flange, described shell seals the rear space between driver and rear wall, the bass conduit that wherein said rear space is included in the back cavity volume in driver dead astern, the draft chamber between back cavity volume and rear wall and extends between the low sound hole and the catheter port at place of draft chamber at back cavity volume place, wherein said draft chamber is coupled by bass conduit with the acoustical ports that the low sound hole at back cavity volume place separates with back cavity volume acoustics, and wherein said draft chamber is coupled with surrounding environment acoustics by the vent port in rear wall.

15. interior concha auriculae formula earphones as claimed in claim 14, it is characterized in that, the Part I of the sound launched by driver propagates through acoustical ports and the Part II of described sound propagates through bass conduit, and wherein Part I and Part II met before leaving shell by vent port in draft chamber.

16. interior concha auriculae formula earphones as claimed in claim 15, it is characterized in that, described vent port is the unique acoustics opening in rear wall.

17. interior concha auriculae formula earphones as claimed in claim 16, it is characterized in that, described interior concha auriculae formula earphone also comprises the Acoustic web covering acoustical ports, wherein said Acoustic web has the first acoustic impedance, wherein said bass conduit has the second acoustic impedance, and wherein the second acoustic impedance is less than the first acoustic impedance.

In 18. 1 kinds, concha auriculae formula earphone, is characterized in that, described interior concha auriculae formula earphone comprises:

Have outer peripheral driver, described driver converts sound to electronic audio signal; And

Shell around described outward flange, described shell has the rear wall of the rear space sealed between driver and rear wall, the bass conduit that wherein said rear space is included in driver back cavity volume below, draft chamber between back cavity volume and rear wall and extends between the low sound hole and the catheter port at place of draft chamber at back cavity volume place, and wherein said rear wall comprises the visible opening of sole external.

19. interior concha auriculae formula earphones as claimed in claim 18, it is characterized in that, the Part I of the sound launched by driver propagates through acoustical ports and the Part II of described sound propagates through bass conduit, and wherein Part I and Part II met before leaving shell by the visible opening of described sole external in draft chamber.

20. interior concha auriculae formula earphones as claimed in claim 19, it is characterized in that, described interior concha auriculae formula earphone also comprises the Acoustic web covering acoustical ports, wherein said Acoustic web has the first acoustic impedance, wherein said bass conduit has the second acoustic impedance, and wherein the second acoustic impedance is less than the first acoustic impedance.