CN107509134A - A kind of earphone second order passive frequency divider - Google Patents
A kind of earphone second order passive frequency divider Download PDFInfo
- Publication number
- CN107509134A CN107509134A CN201710935939.0A CN201710935939A CN107509134A CN 107509134 A CN107509134 A CN 107509134A CN 201710935939 A CN201710935939 A CN 201710935939A CN 107509134 A CN107509134 A CN 107509134A
- Authority
- CN
- China
- Prior art keywords
- circuit
- electric capacity
- frequency divider
- inductance
- resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001914 filtration Methods 0.000 claims abstract description 18
- 230000005611 electricity Effects 0.000 claims description 5
- 230000035945 sensitivity Effects 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 claims description 3
- 230000009467 reduction Effects 0.000 abstract description 2
- 210000000188 diaphragm Anatomy 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1041—Mechanical or electronic switches, or control elements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/10—Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Headphones And Earphones (AREA)
Abstract
The invention discloses a kind of earphone second order passive frequency divider, it includes signal input part, high-pass filtering circuit and low-pass filter circuit, the high-pass filtering circuit is made up of with an inductance in parallel in the main circuit for having an electric capacity again two resistant series, and the main circuit that the series circuit that low-pass filter circuit is made up of a resistance with an electric capacity is parallel to an inductance with an electric capacity again is formed.The present invention is to solve the problems, such as the frequency dividing of two unit earphones, different units is in good that band frequency work of their states, and reduction interferes with each other, the tonequality of great lifting system.
Description
Technical field
The invention belongs to frequency divider field, specifically a kind of earphone second order passive frequency divider.
Background technology
Two unit earphones are the earphones for carrying out audio broadcasting, it is generally the case that it is single that earphone only has an audio to play
Member, but in order to pursue more preferable result of broadcast, people add a broadcast unit, have two audio playing units
Earphone two unit earphones.It is usually a responsible low frequency, another medium-high frequency if Unit two.
Two current unit earphones are all that 2 different units are directly in parallel, so 2 cells overlaps frequency range due to
Distance is different, frequency response curve and has different timbres, and can form the superposition of signal, offset, phase place change, sound is very undesirable.Will
The effect reached needs to adjust the various parameters of high bass unit, and some parameters are not to be likely to be breached ideal state.
Two unit coaxial earphone loudspeaker are divided certainly as patent application 201220055348.7 discloses one kind, it is characterized in that：
Including housing, bonnet, bass vibrating diaphragm, tweeters diaphragmses, monomer both-end magnetic circuit system, built-in frequency-dividing line, external terminal.Before described
Hold tweeters diaphragmses, monomer both-end magnetic circuit system, housing, bass vibrating diaphragm and bonnet affixed successively.The tweeters diaphragmses and bass shake
Film has the exoskeletal voice coil loudspeaker voice coil being directly bonded thereto.Tweeters diaphragmses are adhered to housing forward end, and bass vibrating diaphragm is adhered to housing rear end.
Two vibrating diaphragms are adhered to the specific location set by housing and kept with the monomer both-end magnetic circuit system of housing central fovea intracavitary
Being accurately positioned axially and radially.The present invention is integrated using the built-in frequency-dividing line carried, and total, without additional
Frequency unit can realize that audio divides reduction effect in itself.However, there are still 2 cells overlaps in above-mentioned patent application
Frequency range forms the problem of superposition, counteracting, phase place change of signal, causes sound result of broadcast very undesirable, it is difficult to meets to use
The demand at family.
The content of the invention
In order to solve the above problems, primary and foremost purpose of the invention is to provide a kind of earphone second order passive frequency divider, this point
Frequency device solves the problems, such as the frequency dividing of two unit earphones, different units is in good that band frequency work of their states, avoids
Interfere with each other, the tonequality of great lifting system.
It is a further object to provide a kind of earphone second order passive frequency divider, the divider circuit forms letter
It is single, it is easy to accomplish, cost is cheap, can be not only used for large-scale ear receiver, it is also possible to PlayGear Stealth.
To solve above-mentioned technical problem, the present invention is realized by following technical scheme：
A kind of earphone second order passive frequency divider, it includes signal input part, high-pass filtering circuit and LPF electricity
Road, wherein, high-pass filtering circuit is made up of with an inductance in parallel in the main circuit for having an electric capacity again two resistant series,
The series circuit that low-pass filter circuit is made up of a resistance and an electric capacity is parallel to inductance with an electric capacity again
Main circuit is formed.
Further, described high-pass filtering circuit, resistance R1 connect with resistance R2, one end and the electric capacity C1 of series circuit
It is connected, the other end is connected with output end, and inductance L1 one end is connected between electric capacity C1 and series circuit, other end connection
In output end.Electric capacity C is used for the resistance low frequency of voice unit, leads to high frequency, and inductance L leads to low frequency, resistance R is used to decline to ground resistance high frequency
Subtract the sensitivity of voice unit, matched with the sensitivity with low frequency cell.
Further, in described low-frequency filter circuit, resistance R3 connects with electric capacity C3, one end and the inductance L2 of series circuit
It is connected, the other end is connected with output end, and electric capacity C2 one end is connected between inductance L2 and series circuit, other end connection
In output end.Inductance L is used for the resistance high frequency of bass unit, leads to low frequency.Electric capacity C is used for the resistance low frequency of bass unit, leads to high frequency, electricity
The impedance peak for hindering R, electric capacity C composition low frequency cell suppresses, and makes the output impedance characteristic of power amplifier smooth.
Further, R2 can be removed in described high-pass filtering circuit, the impedance of high frequency may be inconsistent with low frequency；If
Sensitivity is identical can also to cancel R1.
Further, according to the characteristic and cost consideration of different units, described low-frequency filter circuit can cancel C2, protect
R3, C3 are stayed, or cancels R3, C3, retains C2；Can also C2, C3, R3 cancel, and such low pass has reformed into first-order crossover.
Because the power of earphone is smaller, above element can use surface mount elements, and the electric capacity of voice unit preferably selects
Small CBB electric capacity is lost, but volume is bigger, price is high.The inductance of bass unit need to select direct current to hinder small, more than electric current 500mA
's.C2, C3 can select pressure-resistant 50V or so common polarity free capacitor, and resistance selects 1/8W or 1/16W power.
The solution have the advantages that：The frequency divider has redesigned filter circuit, by the improvement to circuit, solves
The frequency dividing problem of two unit earphones, different units is in good that band frequency work of their states, avoid interfering with each other, pole
The tonequality of big lifting system.
And the divider circuit is formed simply, it is easy to accomplish, cost is cheap, can be not only used for large-scale ear receiver, also may be used
With with PlayGear Stealth.
Brief description of the drawings
Fig. 1 is that the present invention implements earphone second order passive frequency divider circuit theory diagrams.
Embodiment
Technical scheme is described in detail with specific embodiment below in conjunction with accompanying drawing, so that the skill of this area
Art personnel, which can understand, is fully understood by the present invention.
Described in Fig. 1, for a kind of earphone second order passive frequency divider of the invention realized, shown in figure, the frequency divider bag
Signal input part, high-pass filtering circuit and low-pass filter circuit have been included, wherein, high-pass filtering circuit and low-pass filter circuit are all
Be made up of surface mount elements electric capacity C, surface mount elements resistance R, surface mount elements inductance L, high-pass filtering circuit by two resistant series again
Formed with an inductance in parallel in the main circuit for having an electric capacity, low-pass filter circuit is made up of a resistance and an electric capacity
The main circuit that series circuit is parallel to an inductance with an electric capacity again is formed.
Specifically, high-pass filtering circuit, resistance R1 connect with resistance R2, and one end of series circuit is connected with electric capacity C1
Connect, the other end is connected with output end, and inductance L1 one end is connected between electric capacity C1 and series circuit, and the other end is connected to defeated
Go out end.
In low-frequency filter circuit, resistance R3 connects with electric capacity C3, and one end of series circuit is connected with inductance L2, the other end
It is connected with output end, electric capacity C2 one end is connected between inductance L2 and series circuit, and the other end is connected to output end.
In other implementations, R2 can be removed in described high-pass filtering circuit, the impedance of high frequency may be with low
Frequently it is inconsistent；If sensitivity is identical can also to cancel R1.
According to the characteristic and cost consideration of different units, described low-frequency filter circuit can cancel C2, retain R3, C3,
Or cancel R3, C3, retain C2；Can also C2, C3, R3 cancel, and such low pass has reformed into first-order crossover.
Because the power of earphone is smaller, above element can use surface mount elements, and the electric capacity of voice unit preferably selects
Small CBB electric capacity is lost, but volume is bigger, price is high.The inductance of bass unit need to select direct current to hinder small, more than electric current 500mA
's.C2, C3 can select pressure-resistant 50V or so common polarity free capacitor, and resistance selects 1/8W or 1/16W power.
For earplug and headphone, this frequency divider can be placed on inside volume controller, and such sound control device can be than passing
The sound control of system is big.Will at least be increased by leading to the line of earphone by 2, and preferably the line of left and right is independent, high-pass filtering circuit and low frequency filter
The line of wave circuit is independent.
For headphone, this frequency divider can be individually positioned in the auricular concha of left and right.Wire rod, can as common headphones
To be 3 lines, the line of preferably left and right is independent, with 4 lines.
Therefore, what the present invention was reached has the technical effect that：The frequency divider has redesigned filter circuit, by circuit
Improve, solve the problems, such as the frequency dividing of two unit earphones, different units is in good that band frequency work of their states, avoid
Interfere with each other, the tonequality of great lifting system.
And the divider circuit is formed simply, it is easy to accomplish, cost is cheap, can be not only used for large-scale ear receiver, also may be used
With with PlayGear Stealth.
On presently preferred embodiments of the present invention is described in detail, but the present invention creations be not only limited in described in reality
Apply example, those skilled in the art can also be made on the premise of without prejudice to spirit of the invention many equal deformations or
Replace, these equal deformations or replacement are included in this application claims in limited range.
Claims (8)
1. a kind of earphone second order passive frequency divider, it is characterised in that the frequency divider includes signal input part, high-pass filtering
Circuit and low-pass filter circuit, wherein, high-pass filtering circuit is by two resistant series again with an inductance in parallel in there is an electricity
The main circuit of appearance is formed, and low-pass filter circuit is in parallel with an electric capacity again by a resistance and the series circuit that an electric capacity forms
Formed in the main circuit for having an inductance.
2. earphone according to claim 1 second order passive frequency divider, it is characterised in that high-pass filtering circuit and low pass filtered
Wave circuit is made up of surface mount elements electric capacity C, surface mount elements resistance R, surface mount elements inductance L.
3. earphone according to claim 2 second order passive frequency divider, it is characterised in that in the high-pass filtering circuit, electricity
Resistance R1 connects with resistance R2, and one end of series circuit is connected with electric capacity C1, and the other end is connected with output end, and the one of inductance L1
End is connected between electric capacity C1 and series circuit, and the other end is connected to output end.
4. earphone according to claim 2 second order passive frequency divider, it is characterised in that：Described low-frequency filter circuit
In, resistance R3 connects with electric capacity C3, and one end of series circuit is connected with inductance L2, and the other end is connected with output end, electric capacity
C2 one end is connected between inductance L2 and series circuit, and the other end is connected to output end.
5. earphone according to claim 3 second order passive frequency divider, it is characterised in that：Described high-pass filtering circuit can
To remove R2, if sensitivity is identical can also to cancel R1.
6. earphone according to claim 4 second order passive frequency divider, it is characterised in that：Described low-frequency filter circuit can
To cancel C2, retain R3, C3, or cancel R3, C3, retain C2；Can also C2, C3, R3 cancel, and such low pass reforms into
First-order crossover.
7. earphone according to claim 3 second order passive frequency divider, it is characterised in that：Described high-pass filtering circuit
Electric capacity, which preferably selects, is lost small CBB electric capacity.
8. earphone according to claim 1 second order passive frequency divider, it is characterised in that described low-pass filter circuit
Inductance direct current need to be selected to hinder small, more than electric current 500mA, C2, C3 can select pressure-resistant 50V or so common polarity free capacitor, electricity
1/8W or 1/16W power are selected in resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710935939.0A CN107509134A (en) | 2017-10-10 | 2017-10-10 | A kind of earphone second order passive frequency divider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710935939.0A CN107509134A (en) | 2017-10-10 | 2017-10-10 | A kind of earphone second order passive frequency divider |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107509134A true CN107509134A (en) | 2017-12-22 |
Family
ID=60701127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710935939.0A Pending CN107509134A (en) | 2017-10-10 | 2017-10-10 | A kind of earphone second order passive frequency divider |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107509134A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108447665A (en) * | 2018-01-24 | 2018-08-24 | 北京金科华业测控技术有限公司 | A kind of controllable impedance device assembly and speaker |
| CN108447658A (en) * | 2018-01-24 | 2018-08-24 | 北京金科华业测控技术有限公司 | A kind of inductor, frequency divider and speaker |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2664333Y (en) * | 2003-11-10 | 2004-12-15 | 贺东 | Loudspeaker audio-frequency output two-order three-frequency dividing coupling circuit |
| CN203301718U (en) * | 2013-07-05 | 2013-11-20 | 惠州超声音响有限公司 | Frequency divider with switchable frequency division points and frequency division orders |
| CN205142494U (en) * | 2015-08-13 | 2016-04-06 | 深圳市冠旭电子有限公司 | Dual track frequency division output circuit and stereo headphone |
-
2017
- 2017-10-10 CN CN201710935939.0A patent/CN107509134A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2664333Y (en) * | 2003-11-10 | 2004-12-15 | 贺东 | Loudspeaker audio-frequency output two-order three-frequency dividing coupling circuit |
| CN203301718U (en) * | 2013-07-05 | 2013-11-20 | 惠州超声音响有限公司 | Frequency divider with switchable frequency division points and frequency division orders |
| CN205142494U (en) * | 2015-08-13 | 2016-04-06 | 深圳市冠旭电子有限公司 | Dual track frequency division output circuit and stereo headphone |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108447665A (en) * | 2018-01-24 | 2018-08-24 | 北京金科华业测控技术有限公司 | A kind of controllable impedance device assembly and speaker |
| CN108447658A (en) * | 2018-01-24 | 2018-08-24 | 北京金科华业测控技术有限公司 | A kind of inductor, frequency divider and speaker |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8073181B2 (en) | Passive headphone equalizing | |
| EP1617704B1 (en) | Receiver with multiple drive coils | |
| KR101514363B1 (en) | Miniature loudspeaker module, method for enhancing frequency response thereof, and electronic device | |
| EP2822259B1 (en) | Mobile device able to switch beween private mode and hands-free mode | |
| EP2952013A2 (en) | Phase-unified loudspeakers: parallel crossovers | |
| US20110293112A1 (en) | Dual high frequency driver canalphone system | |
| CN103096211B (en) | The filter circuit of microphone | |
| CN115804112A (en) | Electrostatic headphones with integrated amplifier | |
| CN105228055A (en) | Audio bass bucking-out system and compensation method thereof | |
| US7251333B2 (en) | Method and apparatus for creating a virtual third channel in a two-channel amplifier | |
| US20130028437A1 (en) | Earphone device with impedance correction unit | |
| CN107509134A (en) | A kind of earphone second order passive frequency divider | |
| CN104301837A (en) | Rotatable all-dimensional combined type loudspeaker box | |
| CA2216385A1 (en) | Audio bass speaker driver circuit | |
| EP2360941B1 (en) | Speaker system and speaker driving circuit | |
| KR101858559B1 (en) | Speaker device | |
| CN205622807U (en) | Dual -purpose earphone | |
| JP2009111836A (en) | Regular polyhedron wide directional characteristic loudspeaker apparatus | |
| CN210958769U (en) | Electronic equipment | |
| CN106131731B (en) | Processing circuit with monitoring and active noise reduction functions and earphone | |
| CN205510354U (en) | Head -mounted bone conduction earphone | |
| CN106028195A (en) | Double-moving coil unit high-fidelity earphone | |
| JP2015056705A (en) | Amplifier for headphone and headphone reproduction device | |
| CN102932706A (en) | Headset with two built-in loudspeakers and signal processing method of headset | |
| CN208015977U (en) | A kind of high response audio frequency dividers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171222 |