CN204014062U - There is the terminal of voice communication function - Google Patents
There is the terminal of voice communication function Download PDFInfo
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- CN204014062U CN204014062U CN201420433472.1U CN201420433472U CN204014062U CN 204014062 U CN204014062 U CN 204014062U CN 201420433472 U CN201420433472 U CN 201420433472U CN 204014062 U CN204014062 U CN 204014062U
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Abstract
The utility model provides a kind of terminal with voice communication function, comprises shell, is arranged on the circuit board of enclosure, and be arranged on the USB slot on shell; Wherein, on circuit board, be fixed with main microphone unit and noise reduction microphone unit; Have capsule components in main microphone unit outer setting, circuit board, capsule components and shell coordinate the additional cavity that forms main microphone unit; Between additional cavity and USB slot, be provided with connectivity structure, connectivity structure forms main microphone unit and enters sound passage; On shell, be provided with reserving gaps, reserving gaps forms noise reduction microphone unit and enters sound passage.Utilize the above-mentioned terminal with voice communication function can save interiors of products space, use structural member less, microphone putting position is flexible, and has good acoustical behavior.
Description
Technical field
The utility model relates to acoustic-electric switch technology field, more specifically, relates to a kind of terminal with voice communication function.
Background technology
Along with social progress and the development of technology, communication product roles in daily life and patent field such as cell phone apparatus, hand free device and helmet are more and more important.Meanwhile, along with the raising that continuous rising and the user of traffic noise and domestic noise require speech quality, the acoustical behavior of single microphone has been not enough to meet user's demand, and therefore the application of dual microphone scheme in actual product is frequent all the more.
At present, the universal communication voice band scope of China is 300Hz～3400Hz, i.e. narrowband speech communication.This frequency band range has covered the main frequency composition of voice signal.Therefore,, for call microphone, need it in this frequency range, to there is comparatively straight frequency response, so that the voice signal of rediscover; On the other hand, suitable and utilize a series of voice signal Processing Algorithm to promote to send the technology of words end voice communication quality to be widely used by increasing extra auxiliary noise reduction microphone and main microphone, i.e. dual microphone noise reduction technology.This type of technology algorithm requires main microphone, noise reduction microphone and mouth three's line physically on same straight line, and two microphones are at a distance of certain distance (2cm～8cm); Meanwhile, the frequency response of noise reduction microphone self should keep good consistency in medium and low frequency scope and main microphone.
While researching and developing this class communication product, for the consideration that microphone unit is adequately protected, traditional method be microphone unit is placed in to product casing within.The sound insulation of the additional cavity that formed thus and/or resonant structure, can cause the frequency range of microphone to narrow, resonance peak or resonance paddy in useful band increases, and causes the decline of overall acoustical behavior.
In the microphone design structure of existing product, need on product casing, perforate as the sound hole of microphone unit, cause there is obvious visible perforate in the outside of product, destroy the global consistency of product appearance.In addition, the sound hole of microphone unit and the sound hole of machine shell are just to placing.Under the airflow function of external environment (as blow, user acutely breathe or walking fast), as the object that hinders air-flow in space, can produce quite complicated flow field near microphone products complete machine.The caused pressure disturbance in this flow field acts on the vibrating diaphragm of microphone unit, can be as normal acoustic pressure disturbance by microphone record, but cannot distinguish mutually with the latter, thereby be called as " pseudo-sound (pseudo sound) ".Pseudo-sound can cause microphone to occur deviation to picking up of normal acoustical signal, and produces obvious low-frequency noise, and then makes speech quality decline even in the time that amplitude is larger, cause the damage of microphone unit itself.
In addition, if microphone unit is rigidity with being connected of product complete machine, when shell is scratched or rubs, particularly in the time that this scratch or friction betide near shell sound hole, can produce and conduct by structure the vibration noise being picked up by microphone, this can cause harmful effect to speech quality equally.
Utility model content
In view of the above problems, the purpose of this utility model is to provide a kind of terminal with voice communication function, thus with solve existing product can not effectively suppress noise, overall appearance inconsistent, use more structure and element to increase the problems such as product complexity.
The terminal of voice communication function that what the utility model provided have, comprises shell, is arranged on the circuit board of enclosure, and be arranged on the USB slot on shell; Wherein, on circuit board, be fixed with main microphone unit and noise reduction microphone unit; Have capsule components in main microphone unit outer setting, circuit board, capsule components and shell coordinate the additional cavity that forms main microphone unit; Between additional cavity and USB slot, be provided with connectivity structure, connectivity structure forms main microphone unit and enters sound passage, imports additional cavity so that sound enters sound passage through main microphone unit, is picked up by main microphone unit; On shell, be provided with reserving gaps, reserving gaps forms noise reduction microphone unit and enters sound passage, is picked up by noise reduction microphone unit so that sound enters sound passage through noise reduction microphone unit.
Wherein, preferred structure is that capsule components is gum cover.
Wherein, preferably structure is, shell comprises upper casing and lower casing, and gum cover is squeezed between upper casing and circuit board, the common additional cavity that forms main microphone unit of gum cover, upper casing and circuit board; Circuit board is arranged on lower casing, and lower casing supports fixing circuit board, and upper casing is connected with lower casing is adaptive.
Wherein, preferred structure is that upper casing is connected by engaging, screw or some glue bond with lower casing.Wherein, preferred structure is that connectivity structure comprises that being arranged on first on circuit board bores a hole, and is arranged on second perforation corresponding with the first perforation on USB slot.
Wherein, preferred structure is that main microphone unit and noise reduction microphone unit are all fixed on circuit board with the form of paster.
Wherein, preferred structure is that circuit board carries out non-rigid connection with shell by engaging, screw or some glue bond.
Wherein, preferred structure is, the sound hole that main microphone unit enters sound passage and main microphone unit spatially staggers, and the sound hole that noise reduction microphone unit enters sound passage and noise reduction microphone unit spatially staggers.
The terminal of voice communication function that what the utility model provided have utilized fully the gap between USB slot, circuit board and upper lower casing etc. originally with the irrelevant inherent structure of microphone cavity acoustic design, product complete machine does not have obvious visible perforate in appearance, makes product appearance one integrated mass more; In addition, microphone is fixed on circuit board by the mode of paster, and putting position is relatively flexible, connects without extra holding wire, has saved greatly inner space, and the structural member simultaneously using is less, has reduced the complexity of the aspect such as structure, electronics work.
Brief description of the drawings
By reference to the content below in conjunction with the description of the drawings and claims, and along with understanding more comprehensively of the present utility model, other object of the present utility model and result will be understood and easy to understand more.In the accompanying drawings:
Fig. 1 is the simplified model figure of microphone cavity acoustic construction;
Fig. 2 is the mechanics analog model figure of Fig. 1;
Fig. 3 is the Electrical analogy illustraton of model of Fig. 1;
Fig. 4 is according to the overall structure schematic diagram of the terminal with voice communication function of the utility model embodiment;
Fig. 5 is according to the decomposition texture schematic diagram of the terminal with voice communication function of the utility model embodiment;
Fig. 6 is according to the main microphone unit cross-section structure of the terminal with voice communication function of the utility model embodiment and enters acoustic path schematic diagram;
Fig. 7 enters acoustic path schematic diagram according to the noise reduction microphone unit of the terminal with voice communication function of the utility model embodiment;
Fig. 8 is the free field amplitude-frequency response figure according to the terminal with voice communication function of the utility model embodiment;
Fig. 9 is the pneumatic noise reducing amount curve chart according to the terminal with voice communication function of the utility model embodiment.
Reference numeral wherein comprises: upper casing 1, lower casing 2, reserving gaps 3, USB slot 4, circuit board 5, main microphone unit enter sound passage 6, capsule components 7, main microphone unit 8, noise reduction microphone unit 9, microphone monomer 10, main microphone unit curve A, noise reduction microphone unit curve B.
In institute's drawings attached, identical label is indicated similar or corresponding feature or function.
Embodiment
In the following description, for purposes of illustration, for the complete understanding to one or more embodiment is provided, many details have been set forth.But, clearly, also can in the situation that there is no these details, realize these embodiment.For for purpose of brevity, the components and parts on the circuit board of the terminal with voice communication function of the present utility model except microphone omit, and do not specifically describe.
Owing to sending the requirement of the acoustical behavior of talking about end more and more higher to handheld device, hand free device, helmet etc. at present, the application of the design of dual microphone in actual product is more and more extensive, the terminal with voice communication function of the present utility model is not limited only on this series products of communication earphone, may be used on equally having on the communication product such as the handheld device such as mobile phone, car handsfree or hand free device of slot.
Below with reference to accompanying drawing, specific embodiment of the utility model is described in detail.
Fig. 1 shows the simplified model of microphone cavity acoustic construction; Fig. 2 shows the mechanics analog model of Fig. 1; Fig. 3 shows the Electrical analogy model of Fig. 1.
Shown in common with Fig. 3 as shown in Figure 1, Figure 2, the cavity body structure of microphone can be regarded as a Helmholtz resonator that microphone unit 10 is placed in one under long wave approximation; Sound hole serves as the effect (being analogous to the inductance in mass, the electrical model in mechanical model) of acoustic mass; Cavity volume is served as the effect (being analogous to the electric capacity in spring, the electrical model that compliance is provided in mechanical model) of acoustic capacitance or air spring.The resonance frequency f of this Helmholtz resonator self
0can be expressed as:
Wherein M
afor acoustic mass, C
afor acoustic capacitance, its numerical value is respectively by following formula,
C
a＝V
bottle/γP
0,
In formula, ρ is atmospheric density, V
neckand V
bottlebe respectively the volume of sound hole (bottleneck) and cavity (in bottle), S
neckfor the sectional area of sound hole, γ is specific heat at constant pressure and the ratio (air γ=1.4) of specific heat at constant volume, P
0for standard atmospheric pressure, the tail end correction length that Δ l is bottleneck structure, has circular cross-section,
Δl＝αd[1-1.47(d/D)+0.47(d/D)
3]，
D and D are respectively the diameter of sound hole and its expansion structure, and α is correction factor.
If represent frequency with f, the acoustic pressure at sound hole place be denoted as to p
1(f), the acoustic pressure at microphone unit place is denoted as p
2(f),, due to the existence of the additional cavity body structure of microphone, the acoustical signal that microphone picks up is only in the acoustical signal approximately equal of limited frequency range and sound hole place reality,
p
1(f)≈p
2(f),f∈(0,f
h).
Upper limiting frequency f
hrelating to parameters with additional cavity body structure and microphone unit itself, in other words, in the time that this upper limiting frequency drops in the useful band of speech communication, the acoustical signal that microphone records can not complete reaction acceptance point place true acoustical signal, will after additional cavity, there is decline in various degree setting up in its overall acoustical behavior.
Therefore,, according to above principle, for meeting the demand of dual microphone acoustical behavior and noise reduction algorithm, unavoidable ground need to arrange the sound hole (M that area is large as far as possible on product casing
a→ 0), and by residing microphone cavity volume control obtain as far as possible little (C
a→ 0).Limiting case (sound hole area infinity, cavity volume is infinitely small) is that microphone unit is completely exposed, and now cavity body structure causes the loss of its acoustical behavior to level off to zero.Destroy globality and the aesthetic property of product appearance for fear of the processing mode of perforate on shell, the terminal of voice communication function that what the utility model provided have, mode using USB slot as the gap between main microphone unit sound hole, button and shell as noise reduction microphone unit sound hole, in ensureing product complete machine good acoustic performance, make product appearance more succinct and attractive in appearance.
Particularly, Fig. 4 and Fig. 5 show respectively according to overall structure and the decomposition texture of the terminal with voice communication function of the utility model embodiment.
As shown in Fig. 4 and Fig. 5 are common, the terminal of voice communication function that what the utility model provided have comprises shell, is arranged on the circuit board 5 of enclosure and is arranged on USB (Universal SerialBus) slot 4 on shell; Wherein, be fixed with main microphone unit 8 and noise reduction microphone unit 9 on circuit board 5, have cavity body structure 7 in main microphone unit 8 outer setting, cavity body structure 7, circuit board 5 and shell coordinate the additional cavity body structure that forms main microphone unit 8; Between additional cavity and USB slot 4, be provided with connectivity structure, this connectivity structure forms main microphone unit and enters sound passage 6, imports in additional cavity, and picked up by main microphone unit 8 so that voice signal enters sound passage 6 through main microphone unit; Meanwhile, on shell, be also provided with reserving gaps 3, form noise reduction microphone unit by reserving gaps 3 and enter sound passage, picked up by noise reduction microphone unit 9 so that voice signal enters sound passage through noise reduction microphone unit.
Wherein, shell comprises upper casing 1 and lower casing 2, and gum cover is squeezed between upper casing and circuit board, the common additional cavity that forms main microphone of gum cover, upper casing and circuit board; Circuit board is arranged on lower casing, lower casing supports fixing circuit board, upper casing 1 is connected with lower casing 2 is adaptive, and be provided with reserving gaps 3 between upper casing 1 and lower casing 2, reserving gaps 3 forms noise reduction microphone unit and enters sound passage, and voice signal can be picked up by noise reduction microphone unit 9 by reserving gaps 3.Be appreciated that in the mode of texturing of the present embodiment, reserving gaps also can be arranged on upper casing surface, or is arranged on lower casing surface.
Simultaneously, main microphone unit enters 6, sound passage and is formed by the connectivity structure being arranged between additional cavity and USB slot 4, wherein, connectivity structure comprises being arranged on the perforation of first on circuit board 5 and being arranged on second on USB slot 4 bores a hole, the first perforation and the second perforation correspondence arrange common composition connectivity structure, and meanwhile, connectivity structure forms main microphone unit and enters sound passage 6, import in additional cavity so that voice signal enters sound passage 6 through main microphone unit, and picked up by main microphone unit 8.
It should be noted that, the Interface Shape of upper casing 1 and lower casing 2 is suitable, the two is fixedly connected with, and be provided with reserving gaps 3, wherein, reserving gaps 3 is the reserved key strokes of multifunction push key (Multi-Function Button, MFB) for dual microphone, the also double sound hole that does noise reduction microphone unit 9 of while.In a preferred implementation of the present utility model, upper casing 1 is connected by nonrigid connected modes such as engaging, screw or some glue bonds with lower casing 2.
Particularly, main microphone unit 8 and the noise reduction microphone unit 9 of the terminal of voice communication function that what the utility model provided have are all arranged on circuit board 5, wherein, on circuit board 5, be provided with two first perforation, on USB slot 4, be provided with second perforation corresponding with the first perforation, the first perforation and the common formation of the second perforation connectivity structure, and enter sound passage 6 as main microphone unit; In addition, USB slot (being USB slot) 4 is arranged on the below of circuit board 5 and main microphone unit 8, in the utility model USB slot except serving as USB interface, the also sound hole of the double microphone unit 8 of deciding.In addition, circuit board 5 is arranged on the lower casing 2 of terminal, and, on lower casing 2, be provided with the breach suitable with USB slot 4, be used for being communicated with the external world.
It should be noted that, USB slot 4 is not limited to be arranged on the below of circuit board 5, also can be arranged on the top of circuit board 5, as long as guarantee to be arranged on the second punch position correspondence that first on circuit board 5 bored a hole and be arranged on USB slot 4, the main microphone unit of common formation enters sound passage 6, makes voice signal enter sound passage 6 by main microphone unit and is picked up by main microphone unit.
In addition, there is cavity body structure 7 in the outer setting of main microphone unit 8, these parts can be subject to upper casing 1 and produce certain decrement with the extruding of circuit board 5 after upper casing 1 is installed, thereby main microphone unit 8 is isolated with the external world, protected the main microphone unit that also has of isolating with the external world by cavity body structure 7 and enter sound passage 6 simultaneously, that is to say the first perforation, the second perforation is isolated from the outside together with main microphone unit 8 under the effect of cavity body structure 7, form one by circuit board 5, upper casing 1, the additional cavity of the main microphone unit 8 that cavity body structure 7 forms, only leaving main microphone unit enters sound passage 6 and is connected with extraneous.In addition, in the utility model, circuit board and lower casing are non-being rigidly connected, and can be fixed connection by modes such as engaging, screw or some glue bonds.
Particularly, capsule components 7 is the parts that can play sealing function that gum cover or other flexible material are made.Wherein, gum cover is arranged on the outside of main microphone unit 8, and be squeezed between shell and circuit board 5, gum cover, upper casing 1 and the common additional cavity that forms main microphone unit 8 of circuit board 5, thereby main microphone unit 8 is isolated with the external world, only retain main microphone unit and enter sound passage 6, can improve the acoustical behavior of the terminal with voice communication function by additional cavity is set.
It should be noted that, in the terminal with voice communication function providing at the utility model, additional cavity also can be set, in this case, the cavity that will form main microphone unit between shell and circuit board, the structure of whole terminal is simpler, is easier to realize.
In a preferred implementation of the present utility model, also can be at noise reduction microphone unit outer setting gum cover, circuit board, gum cover and shell coordinate the additional cavity that forms noise reduction microphone unit, perforation is set simultaneously on circuit board, what coordinate that reserving gaps between upper and lower shell forms noise reduction microphone jointly enters sound passage, improves microphone entirety acoustical behavior.In a preferred implementation of the present utility model, main microphone unit 8 is fixed on circuit board 5 with the form of paster, with upper casing 1, cavity body structure 7, main microphone unit enters sound passage 6 and the main microphone unit cavity body structure of USB slot 4 common composition, near the flow resistance of main microphone unit 8 is increased, in addition, main microphone unit enters sound passage 6 and spatially staggers with the sound hole of main microphone unit 8, and, the sound hole that noise reduction microphone unit enters sound passage and noise reduction microphone unit 9 spatially staggers, for example, main microphone unit enter sound passage 6 axially and axially the paralleling of the sound hole of main microphone unit 8, noise reduction microphone unit enter sound passage axially and axially the paralleling of the sound hole of noise reduction microphone unit 9, the disturbance that air-flow is produced can not act directly on the vibrating diaphragm of main microphone unit 8 and noise reduction microphone unit 9, reduce the low-frequency noise forming thus, also can reduce the possibility that main microphone unit damages simultaneously.
Particularly, Fig. 6 shows according to the main microphone unit cross-section structure of the terminal with voice communication function of the utility model embodiment and enters acoustic path.
As shown in Figure 6, wherein, wave represents sound wave, arrow is depicted as the acoustic path of entering of main microphone unit 8, main microphone unit 8 is fixed on circuit board with the form of paster, and at installation cavity body structure 7 and independently cavity body structure of the rear formation of upper casing 1, only the main microphone unit on stick holding circuit plate enters sound passage 6, is in communication with the outside by USB slot 4.Wherein, USB slot is in communication with the outside by the breach of lower casing 2, when Acoustic Wave Propagation is to USB slot 4 places, successively, by USB slot 4, the second perforation and the first perforation, within entering the additional cavity of main microphone unit, is finally picked up by main microphone unit 8.
In another preferred implementation of the present utility model, noise reduction microphone unit is with exposed being fixed on circuit board of form of paster, and reserving gaps is set on shell as sound hole.Further, Fig. 7 shows according to the noise reduction microphone unit of the terminal with voice communication function of the utility model embodiment and enters acoustic path.
As shown in Figure 7, wherein, wave represents sound wave, and arrow is depicted as the acoustic path of entering of noise reduction microphone unit 9, noise reduction microphone unit 9 is similar to main microphone unit and is also fixed on circuit board with the form of paster, between upper casing 1 and lower casing 2, does not set up separately cavity for noise reduction microphone unit 9.As shown by arrows, sound wave is by entering in shell for the reserved reserving gaps 3 of multifunction push key, by being picked up noise reduction microphone unit 9.And the sound wave entering by USB slot 4 only can be picked up by main microphone unit, under the effect of cavity body structure 7, sound wave can not enter enclosure by USB slot 4 and be picked up by noise reduction microphone unit 9.In addition, also can be at noise reduction microphone unit outer setting gum cover, circuit board, gum cover and shell coordinate the additional cavity that forms noise reduction microphone unit, perforation is set simultaneously on circuit board, what coordinate that reserving gaps between upper and lower shell forms noise reduction microphone jointly enters sound passage, improves microphone entirety acoustical behavior.
In the utility model, the sound hole of microphone and microphone enter sound passage and spatially stagger, non-just to arranging, realize the complications design of main microphone unit being entered to acoustic path, increase flow resistance, made the vibrating diaphragm of microphone and airflow direction stagger simultaneously, avoided air-flow to act directly on the vibrating diaphragm of microphone, form noise or cause the damage of microphone unit, and the acoustical behavior of words end is sent in impact.Particularly, Fig. 8 shows according to the free field amplitude-frequency response of the terminal with voice communication function of the utility model embodiment.
As shown in Figure 8, transverse axis represents the frequency (unit: hertz) of free field, and the longitudinal axis represents amplitude sound pressure level (unit: decibel), and solid line A represents that main microphone unit curve, dotted line B represent noise reduction microphone unit curve.As can be seen from the figure, main microphone unit has comparatively straight frequency response in narrowband speech communication band (300Hz～3400Hz), and its excursion is less than 3dB; And noise reduction microphone unit has good consistency with main microphone unit in the low-frequency range that is less than 1.5KHz, the difference between the two is less than 3dB, can meet the demand of two Mike's noise reduction algorithms.
Except having good frequency response, the terminal of voice communication function that what the utility model provided have also has good inhibitory action to pneumatic noise and structural vibration noise.Particularly, Fig. 9 shows according to the pneumatic noise reducing amount curve of the hidden diamylose wind of the utility model embodiment.
As shown in Figure 9, transverse axis represents frequency (unit: hertz), and the longitudinal axis represents insertion loss (unit: decibel), and solid line A represents that main microphone unit curve, dotted line B represent noise reduction microphone unit curve.Under the protection of cavity body structure of the present utility model; all there is significant decline in the pneumatic noise of main microphone unit and noise reduction microphone unit; particularly within the scope of medium and low frequency; more than the reducing amount of the pneumatic noise of main microphone unit can reach 11dB, more than the reducing amount of the pneumatic noise of noise reduction microphone unit reaches 16dB.Avoid pseudo-acoustic conductance to cause microphone deviation has been appearred in picking up of normal signal, and produce obvious low-frequency noise, and then make speech quality decline even in the time that amplitude is larger, cause the phenomenon of microphone infringement itself to occur, effectively suppress the interference of noise to microphone, improved the overall acoustical behavior of microphone.
In addition, it should be noted that, terminal and the earphone entirety of voice communication function that what the utility model provided have are non-being rigidly connected, and circuit board and shell are non-being rigidly connected on the one hand, and circuit board is placed on lower casing, engages with lower casing; Main microphone unit is connected with upper casing by gum cover on the other hand.In addition, the sound hole on shell, i.e. USB slot, is positioned at the concealed location of the less touching of user, makes because the structural vibration noise scratching or friction causes is difficult for being picked up by microphone, thereby reduces the impact of this noise like on speech quality.
It should be noted that, the sound hole that main microphone unit enters sound passage and main microphone unit spatially staggers, the sound hole that noise reduction microphone unit enters sound passage and noise reduction microphone unit spatially staggers, and the disturbance of avoiding air-flow to produce acts directly on the vibrating diaphragm of main microphone unit and noise reduction microphone unit and affects the acoustical behavior of terminal.Simultaneously, the sound hole of main microphone unit and noise reduction microphone unit is all arranged on the less concealed location of touching of user, make because the caused structural vibration noise that scratches/rub is not easy to be picked up by main microphone unit and noise reduction microphone unit, thereby reduce the impact of noise on speech quality, improve the acoustical behavior of terminal.
According to the terminal with voice communication function of the utility model embodiment, by with USB (Universal Serial Bus, USB) slot as the gap between main microphone unit sound hole, button and shell the mode as noise reduction microphone unit sound hole, in ensureing that product complete machine send words end acoustical behavior good, make the sound hole of shell more hidden, product appearance is more succinct and attractive in appearance, and more easily realizes on structural design and circuit board wiring.The microphone of tortuous design enters acoustic path and has avoided air-flow to act directly on the vibrating diaphragm of microphone, forms noise or causes the damage of microphone.In addition, between microphone and shell nonrigid be connected effectively to have reduced scratch or the caused structural vibration noise that rubs.
The terminal that has voice communication function according to of the present utility model is described in the mode of example above with reference to accompanying drawing.But, it will be appreciated by those skilled in the art that the terminal with voice communication function proposing for above-mentioned the utility model, can also on the basis that does not depart from the utility model content, make various improvement.Therefore, protection range of the present utility model should be determined by the content of appending claims.
Claims (9)
1. there is a terminal for voice communication function, comprise shell, be arranged on the circuit board of enclosure, and be arranged on the USB slot on shell; It is characterized in that,
On described circuit board, be fixed with main microphone unit and noise reduction microphone unit;
Have capsule components in described main microphone unit outer setting, described circuit board, capsule components and shell coordinate the additional cavity that forms described main microphone unit;
Between described additional cavity and described USB slot, be provided with connectivity structure, described connectivity structure forms main microphone unit and enters sound passage, import described additional cavity so that sound enters sound passage through described main microphone unit, picked up by described main microphone unit;
On described shell, be provided with reserving gaps, described reserving gaps forms noise reduction microphone unit and enters sound passage, is picked up by described noise reduction microphone unit so that sound enters sound passage through described noise reduction microphone unit.
2. the terminal with voice communication function as claimed in claim 1, is characterized in that,
Described capsule components is gum cover.
3. the terminal with voice communication function as claimed in claim 2, is characterized in that,
Described shell comprises upper casing and lower casing, and described gum cover is squeezed between described upper casing and described circuit board, the common additional cavity that forms described main microphone unit of described gum cover, upper casing and circuit board;
Described circuit board is arranged on described lower casing, and described lower casing supports fixing described circuit board, and described upper casing is connected with lower casing is adaptive.
4. the terminal with voice communication function as claimed in claim 3, is characterized in that,
Described upper casing is connected by engaging, screw or some glue bond with lower casing.
5. the terminal with voice communication function as claimed in claim 1, is characterized in that,
In described noise reduction microphone unit, outer setting has gum cover, and described circuit board, gum cover and shell coordinate the additional cavity that forms described noise reduction microphone unit.
6. the terminal with voice communication function as claimed in claim 1, is characterized in that,
Described connectivity structure comprises that being arranged on first on described circuit board bores a hole, and is arranged on second perforation corresponding with described the first perforation on described USB slot.
7. the terminal with voice communication function as claimed in claim 1, is characterized in that,
Described main microphone unit and noise reduction microphone unit are all fixed on described circuit board with the form of paster.
8. the terminal with voice communication function as claimed in claim 1, is characterized in that,
Described circuit board carries out non-rigid connection with described shell by engaging, screw or some glue bond.
9. the terminal with voice communication function as claimed in claim 1, is characterized in that,
The sound hole that described main microphone unit enters sound passage and described main microphone unit spatially staggers; And,
The sound hole that described noise reduction microphone unit enters sound passage and described noise reduction microphone unit spatially staggers.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420433472.1U CN204014062U (en) | 2014-08-01 | 2014-08-01 | There is the terminal of voice communication function |
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|---|---|---|---|
| CN201420433472.1U CN204014062U (en) | 2014-08-01 | 2014-08-01 | There is the terminal of voice communication function |
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| CN204014062U true CN204014062U (en) | 2014-12-10 |
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ID=52053997
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104105019A (en) * | 2014-08-01 | 2014-10-15 | 歌尔声学股份有限公司 | Terminal having audio communication function and method for picking up sound signal thereof |
| CN104320734A (en) * | 2014-10-16 | 2015-01-28 | 小米科技有限责任公司 | Earphone jack with built-in microphone |
| CN106131721A (en) * | 2016-08-05 | 2016-11-16 | 上海与德通讯技术有限公司 | Terminal unit |
| CN109493876A (en) * | 2018-10-17 | 2019-03-19 | 北京车和家信息技术有限公司 | A kind of microphone array control method, device and vehicle |
-
2014
- 2014-08-01 CN CN201420433472.1U patent/CN204014062U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104105019A (en) * | 2014-08-01 | 2014-10-15 | 歌尔声学股份有限公司 | Terminal having audio communication function and method for picking up sound signal thereof |
| CN104105019B (en) * | 2014-08-01 | 2017-12-26 | 歌尔股份有限公司 | The method of terminal and its pickup voice signal with voice communication function |
| CN104320734A (en) * | 2014-10-16 | 2015-01-28 | 小米科技有限责任公司 | Earphone jack with built-in microphone |
| CN106131721A (en) * | 2016-08-05 | 2016-11-16 | 上海与德通讯技术有限公司 | Terminal unit |
| CN109493876A (en) * | 2018-10-17 | 2019-03-19 | 北京车和家信息技术有限公司 | A kind of microphone array control method, device and vehicle |
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Address after: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee after: Goertek Inc. Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee before: Goertek Inc. |