CN106488350A - Earphone - Google Patents
Earphone Download PDFInfo
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- CN106488350A CN106488350A CN201510531294.5A CN201510531294A CN106488350A CN 106488350 A CN106488350 A CN 106488350A CN 201510531294 A CN201510531294 A CN 201510531294A CN 106488350 A CN106488350 A CN 106488350A
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- signal
- earphone
- electric capacity
- supercircuit
- signal end
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Abstract
The invention discloses a kind of earphone, including：First speaker and the second speaker；For exporting the first signal end, secondary signal end, the common port for exporting secondary signal of the first signal, described first signal end is grounded after being connected with described first loudspeaker in series, described secondary signal end is grounded after being connected with described second loudspeaker in series, described common end grounding；Signal cross supercircuit, described signal cross supercircuit is connected between described first signal end and described secondary signal end, described signal cross supercircuit is superimposed for realizing intersecting between described first signal and described secondary signal, so that sound field extension realized by described earphone.This earphone can not only realize sound field extension effect, and structure is simple, low cost.
Description
Technical field
The present invention relates to technical field of electronic equipment, particularly to a kind of earphone.
Background technology
Generally earphone is dual-channel headphone, either wear-type or In-Ear, due to its use the limitation of position so that
Earphone cannot overcome the crown effect of earphone audio, thus be unable to reach the sound field that digital sound can reach open listen to effect
Really.
Content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.For this reason, the purpose of the present invention
It is to propose a kind of earphone being capable of sound field extension effect.
For achieving the above object, embodiments of the invention propose a kind of earphone, including：First speaker and the second speaker；
For exporting the first signal end, secondary signal end, the common port for exporting secondary signal of the first signal, described first letter
Number end is grounded after being connected with described first loudspeaker in series, and described secondary signal end is connected with described second loudspeaker in series and is followed by
Ground, described common end grounding；Signal cross supercircuit, described signal cross supercircuit is connected to described first signal end
And described secondary signal end between, described signal cross supercircuit be used for realizing described first signal and described secondary signal it
Between the superposition that intersects so that described earphone realize sound field extension.
Earphone according to embodiments of the present invention, realizes the phase between the first signal and secondary signal by signal cross supercircuit
Mutually cross-superimposed, so that sound field extension realized by earphone, effectively overcome the crown effect of earphone audio, thus reach sound field opening
Wealthy listens to effect, provide the user more preferable audio impression and experiences.
According to one embodiment of present invention, described signal cross supercircuit includes：Adjustable resistance；Capacitance group, described electricity
Described in Rong Zuyu, adjustable resistance is connected in series.
Specifically, described capacitance group includes the first electric capacity and second electric capacity of parallel connection.
According to one embodiment of present invention, described signal cross supercircuit also includes permutator, described permutator with
Described adjustable resistance is connected in series.
Specifically, described adjustable resistance is rotary adjustable resistor, described rotary adjustable resistor and described permutator
Linkage.
According to one embodiment of present invention, described adjustable resistance is rectilinearly-moved slide type adjustable resistor.
According to one embodiment of present invention, the capacitance of described first electric capacity is more than the capacitance of described second electric capacity.
Specifically, described first electric capacity corresponds to the extension message number of the first frequency range, and described second electric capacity corresponds to the expansion of the second frequency range
Exhibition message number, wherein, the frequency of described first frequency range is less than the frequency of described second frequency range.
Further, described first frequency range is 30-500Hz, and described second frequency range is 3500-5500Hz.
In some embodiments of the invention, described first signal end corresponds to L channel, and described secondary signal end corresponds to R channel.
Brief description
Fig. 1 is the electrical block diagram of earphone according to an embodiment of the invention.
Fig. 2 is the electrical block diagram of earphone in accordance with another embodiment of the present invention.
Specific embodiment
Embodiments of the invention are described below in detail, the example of described embodiment is shown in the drawings, wherein identical from start to finish
Or the element that similar label represents same or similar element or has same or like function.Retouch below with reference to accompanying drawing
The embodiment stated is exemplary it is intended to be used for explaining the present invention, and is not considered as limiting the invention.
The earphone of proposition according to embodiments of the present invention to be described with reference to the accompanying drawings.
Fig. 1 is the electrical block diagram of earphone according to an embodiment of the invention.As shown in figure 1, this earphone includes
One speaker SPK1, the second speaker SPK2, the first signal end P1, secondary signal end P2, common port P3 and signal
Cross-superimposed circuit 10.
Wherein, the first signal end P1 is used for output the first signal, and secondary signal end P2 is used for exporting secondary signal, the first letter
Number end P1 and the first speaker SPK1 be connected in series after ground connection GND, secondary signal end P2 and the second speaker SPK2 go here and there
Connection connect after be grounded GND, common port P3 be grounded GND, signal cross supercircuit 10 be connected to the first signal end P1 and
Between the P2 of secondary signal end, signal cross supercircuit 10 is used for realizing intersecting between the first signal and secondary signal
Superposition, so that sound field extension realized by earphone.
Briefly, the first signal that the first signal end P1 is exported by signal cross supercircuit 10 is defeated with secondary signal end P2
The secondary signal going out intersects superposition to produce new signal so that the first speaker SPK1 and the second speaker SPK2 obtains
Acoustical signal be no longer simple first signal and secondary signal, but being superimposed of the first signal and secondary signal and new signal,
Thus experience sound field extension effect acoustically.
According to one embodiment of present invention, the first signal end P1 corresponds to L channel, and secondary signal end P2 corresponds to R channel.
Specifically, the first signal L of L channel enters R channel through signal cross supercircuit 10, is formed newly in R channel
Signal L ', with secondary signal R of R channel be overlapped formed R channel extension message R+L '；In the same manner, R channel
Secondary signal R enters L channel through signal cross supercircuit 10, forms new signal R ' in L channel, with L channel
First signal L is overlapped forming L channel extension message L+R '.Raise one's voice now by the first speaker SPK1 and second
The acoustical signal of device SPK2 has been no longer original R+L signal, but the superposed signal of L+ (R+L ') and R+ (L+R '), from
And reach the effect of sound field extension, efficiently solve the problems, such as that conventional earphone sound field is narrow, Sound image localization deviates, make acoustical signal
Sense of hearing sound field broader so that user has a kind of sensation on the spot in person, improve user audio impression and body
Test.
According to one embodiment of present invention, as shown in figure 1, signal cross supercircuit 10 includes adjustable resistance R and electric capacity
Group, capacitance group is connected in series with adjustable resistance R.Wherein, capacitance group includes the first electric capacity C1 and the second electric capacity C2 of parallel connection.
According to one embodiment of present invention, the capacitance of the first electric capacity C1 is more than the capacitance of the second electric capacity C2.Specifically,
The extension message number of corresponding first frequency range of one electric capacity C1, the extension message number of corresponding second frequency range of the second electric capacity C2, wherein,
The frequency of the first frequency range is less than the frequency of the second frequency range, and the first frequency range can be 30-500Hz, and the second frequency range can be
3500-5500Hz.
Specifically, adjustable resistance R is used for controlling the signal intensity being overlapped mutually between two sound channels in left and right, works as adjustable resistance
When R increases, the signal intensity being overlapped mutually reduces；Conversely, the signal intensity being overlapped mutually will increase.For example, when adjustable
When resistance R increases, the first signal L of L channel enters R channel through signal cross supercircuit 10, is formed in R channel
Signal L ' reduce so that R channel extension message R+L ' reduce, meanwhile, secondary signal R of R channel is through signal
Cross-superimposed circuit 10 enters L channel, and the signal R ' being formed in L channel reduces, so that L channel extension message number
L+R ' reduces.
In theory, only pass through the function that adjustable resistance R can achieve signal cross superposition in two sound channels in left and right, thus realizing
Earphone sound field extends effect, but, when realizing sound field extension effect only with adjustable resistance R, acoustical signal is in full frequency band
Stereophonic effect can substantially reduce, its reason is：Pure resistance does not have frequency-selecting function, the signal of all frequencies is handed over
Fork superposition is all equivalent, although sound field extension effect, the letter of two sound channels in left and right therefore can be experienced acoustically
Number separation identification reduces, thus reducing the stereophonic effect of full frequency band in the range of full frequency band.Therefore, in the present invention
Embodiment in, it is possible to use the selecting frequency characteristic of electric capacity, that is, electric capacity different capacitive reactance characteristics are presented to different frequencies, come
Ensure the Signal separator identification of two sound channels in left and right, thus ensureing stereo audio.The capacitive reactance characteristic of wherein electric capacity is for example following
Shown in formula (1)：
Wherein, xcFor the capacitive reactance of electric capacity, f is frequency, and c is the capacitance of electric capacity.
Knowable to above-mentioned formula (1), when capacitance c mono- timing of electric capacity, if frequency f is different, the capacitive reactance x of electric capacityc
Different；And work as frequency f mono- timing, and if capacitance c of electric capacity is different, the capacitive reactance x of electric capacitycAlso different, therefore true
After reserving the frequency range that will allow to be superimposed by signal cross, you can calculate the capacitance of electric capacity according to frequency range.
It should be noted that the sound field extension of acoustical signal such as music signal is typically big scene, the signal of Larger Dynamic,
The capacitance of electric capacity therefore can be calculated according to the frequency of the high band of acoustical signal and low-frequency range, and in acoustical signal
Frequency range (including speech frequency, the intermediate frequency component of music signal) does not do signal cross superposition, two about basic holding
Sound channel is original signal, thus ensureing stereo audio.
Knowable to above-mentioned formula (1), when needing the acoustical signal of extended high frequency section, capacitance can be selected smaller
Electric capacity；When needing the acoustical signal of expansion low-frequency section, capacitance can be selected than larger electric capacity；Simultaneously simultaneous when needing
During the acoustical signal of Gu high band and low-frequency range, can be realized by the different electric capacity of capacitance, for example, it is possible to pass through
First electric capacity C1 and the second electric capacity C2 is in parallel to be realized, and wherein, the capacitance of the first electric capacity C1 can be 10uF, corresponding
The frequency of the first frequency range can be 30-200Hz, the capacitance of the second electric capacity C2 can be 10nF, corresponding second frequency
The frequency of section can be 4500-8500Hz.That is, the acoustical signal of the only first frequency range and the second frequency range can enter
Row signal cross is superimposed, and the signal of other frequency range assumes higher capacitive reactance, will not be cross-superimposed, therefore substantially keeps
Original binaural signal, thus sound field extension effect not only can be reached, and can ensure that stereo audio.In addition,
The circuit structure of the signal cross supercircuit 10 shown in Fig. 1 is simple, and cost ratio is relatively low, and the circuit structure with player,
Control chip etc. is unrelated, and versatility is relatively good, for example, it is possible to apply carry setting of player in mobile phone, computer, flat board etc.
Standby upper.
According to one embodiment of present invention, as shown in Fig. 2 signal cross supercircuit 10 also includes permutator SW,
Permutator SW is connected in series with adjustable resistance R.Wherein, adjustable resistance R is rotary adjustable resistor, rotation
Formula adjustable resistor is linked with permutator SW.Sound is realized by the permutator SW linking with adjustable resistance R
The switching of effect function, to meet demand and the hobby of different user.
According to another embodiment of the invention, adjustable resistance R is rectilinearly-moved slide type adjustable resistor, to adapt to difference
Topology requirement.
According to a specific example of the present invention, it is first according to the circuit shown in Fig. 1 or Fig. 2 and earphone is set, so
Only a 0.7V is applied to L channel afterwards, the first frequency range is 30-500Hz, the second frequency range is the single-frequency of 3500-5500Hz
With continuous tonal signal, adjust adjustable resistance R and simultaneously detect R channel, when obtain on R channel a 0.3V about same
During frequency signal, the sound field that may be significantly extends effect；Or only R channel is applied with a 0.7V, the first frequency
Rate is 30-500Hz, and the second frequency range is the single-frequency of 3500-5500Hz and continuous tonal signal, adjusts adjustable resistance R simultaneously
Detection L channel, when on L channel obtain a 0.3V about same frequency signal when, the sound that equally may be significantly
Field extension effect.
In actual use, the earphone of the embodiment of the present invention is inserted on two-channel stereo sound source, then
Play music and adjust on one side adjustable resistance R or by permutator SW adjustment adjustable resistance R, you can obtain wanting
Sound field extends effect.In an embodiment of the present invention, earphone can for music earphone, gaming headset, mobile phone ear mark with
And bluetooth earphone etc..
Earphone according to embodiments of the present invention, realizes the phase between the first signal and secondary signal by signal cross supercircuit
Mutually cross-superimposed, so that sound field extension realized by earphone, effectively overcome the crown effect of earphone audio, thus reach sound field opening
Wealthy listens to effect, provide the user the impression of more preferable audio and experiences, and structure is simple, low cost, and with broadcast
The circuit structure putting device is unrelated, highly versatile.
In describing the invention it is to be understood that term " " center ", " longitudinal ", " horizontal ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ",
The orientation of instruction such as " clockwise ", " counterclockwise ", " axial ", " radially ", " circumferential " or position relationship are based on shown in the drawings
Orientation or position relationship, be for only for ease of description the present invention and simplify description, rather than instruction or hint indication device or
Element must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.
Additionally, term " first ", " second " be only used for describe purpose, and it is not intended that instruction or hint relative importance or
The implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or hidden
Include at least one this feature containing ground.In describing the invention, " multiple " are meant that at least two, such as two, three
Individual etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the art such as term " installation ", " being connected ", " connection ", " fixation "
Language should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be machinery
Connect or electrically connect；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, can be two units
Connection within part or the interaction relationship of two elements, limit unless otherwise clear and definite.Ordinary skill for this area
For personnel, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be
First and second feature directly contacts, or the first and second features are by intermediary mediate contact.And, first is special
Levy second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only
Only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below "
Can be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height and be less than second
Feature.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specific example ",
Or the description of " some examples " etc. means specific features with reference to this embodiment or example description, structure, material or feature bag
It is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term necessarily
It is directed to identical embodiment or example.And, the specific features of description, structure, material or feature can be arbitrary
Combine in an appropriate manner in individual or multiple embodiment or example.Additionally, in the case of not conflicting, the skill of this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be combined by art personnel
And combination.
Although embodiments of the invention have been shown and described above it is to be understood that above-described embodiment is exemplary,
It is not considered as limiting the invention, those of ordinary skill in the art within the scope of the invention can be to above-described embodiment
It is changed, changes, replacing and modification.
Claims (10)
1. a kind of earphone is it is characterised in that include：
First speaker and the second speaker；
For exporting the first signal end of the first signal, for exporting secondary signal end, the common port of secondary signal, described the
One signal end is grounded after being connected with described first loudspeaker in series, and described secondary signal end is connected with described second loudspeaker in series
After be grounded, described common end grounding；
Signal cross supercircuit, described signal cross supercircuit is connected to described first signal end and described secondary signal end
Between, described signal cross supercircuit is superimposed for realizing intersecting between described first signal and described secondary signal,
So that sound field extension realized by described earphone.
2. earphone according to claim 1 is it is characterised in that described signal cross supercircuit includes：
Adjustable resistance；
Capacitance group, described capacitance group is connected in series with described adjustable resistance.
3. earphone according to claim 2 is it is characterised in that described capacitance group includes first electric capacity and second of parallel connection
Electric capacity.
4. the earphone according to Claims 2 or 3 is it is characterised in that described signal cross supercircuit also includes changing
Switch, described permutator is connected in series with described adjustable resistance.
5. earphone according to claim 4 it is characterised in that described adjustable resistance be rotary adjustable resistor, institute
State rotary adjustable resistor and described permutator linkage.
6. earphone according to claim 2 is it is characterised in that described adjustable resistance is rectilinearly-moved slide type adjustable resistor.
7. earphone according to claim 3 is it is characterised in that the capacitance of described first electric capacity is more than described second electric capacity
Capacitance.
8. earphone according to claim 7 is it is characterised in that described first electric capacity corresponds to the extension message of the first frequency range
Number, described second electric capacity corresponds to the extension message number of the second frequency range, and wherein, the frequency of described first frequency range is less than described second
The frequency of frequency range.
9., it is characterised in that described first frequency range is 30-500Hz, described second frequently for earphone according to claim 8
Section is 3500-5500Hz.
10. the earphone according to any one of claim 1-3,5-9 is it is characterised in that described first signal end corresponds to
L channel, described secondary signal end corresponds to R channel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510531294.5A CN106488350B (en) | 2015-08-27 | 2015-08-27 | Earphone |
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| CN201510531294.5A CN106488350B (en) | 2015-08-27 | 2015-08-27 | Earphone |
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| CN106488350A true CN106488350A (en) | 2017-03-08 |
| CN106488350B CN106488350B (en) | 2019-11-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110858935A (en) * | 2018-08-23 | 2020-03-03 | Ｔｔｒ株式会社 | Electroacoustic transducer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110858935A (en) * | 2018-08-23 | 2020-03-03 | Ｔｔｒ株式会社 | Electroacoustic transducer |
| CN110858935B (en) * | 2018-08-23 | 2021-05-28 | Ｔｔｒ株式会社 | Electroacoustic transducer |
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| Publication number | Publication date |
|---|---|
| CN106488350B (en) | 2019-11-22 |
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