CN207744107U - Earphone frequency dividing circuit - Google Patents
Earphone frequency dividing circuit Download PDFInfo
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- CN207744107U CN207744107U CN201721687121.3U CN201721687121U CN207744107U CN 207744107 U CN207744107 U CN 207744107U CN 201721687121 U CN201721687121 U CN 201721687121U CN 207744107 U CN207744107 U CN 207744107U
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- sound
- frequency
- dynamic iron
- frequency division
- division module
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Abstract
The utility model is related to a kind of earphone frequency dividing circuits, including：At least four sound frequency division modules in parallel, each sound frequency division module is connect with signal input module respectively, each sound frequency division module respectively includes dynamic iron unit, filtering unit corresponding with filtering frequency range, the (PCC) power for adjusting power, for making each sound frequency division module export the voice signal of different frequency range.Above-mentioned earphone frequency dividing circuit, pass through each module different filtering unit and (PCC) power, voice signal is carried out to be divided into multiple and different frequency ranges, the voice signal of the respective frequency range of each resume module, so that the interference between modules frequency range reduces, the sound effect of earphone is promoted, and keeps sound purer.
Description
Technical field
The utility model is related to head circuit fields, more particularly to a kind of earphone frequency dividing circuit.
Background technology
More dynamic iron unit earphones are usually used in stage monitoring headpone and high-end HIFI music earphones, and common at this stage is mostly dynamic
Iron earphone is mostly Unit three, Unit four, two frequency dividings of Unit six or three frequency division earphone.
Multiple handset modules are divided in different frequency fields and worked by two frequency dividings and three frequency division earphone, but in this way
It height or high, normal, basic three frequency ranges, such frequency dividing can only be divided into can make sound is rough there is certain superposition between module
And interference, sound will appear it is impure, the problem of phase perturbations.
Utility model content
Based on this, it is necessary to lead to sound superposition interference for two frequency ranges or three frequency ranges, impure, phase perturbations are asked
Topic, provides a kind of earphone frequency dividing circuit.
A kind of earphone frequency dividing circuit, including：At least four sound frequency division modules in parallel；
Each sound frequency division module is connect with signal input module respectively；
Each sound frequency division module respectively includes sequentially connected dynamic iron unit, filtering unit corresponding with filtering frequency range, tune
The (PCC) power of whole power, the voice signal of each sound frequency division module output different frequency range.
In one embodiment, the sound frequency division module is four, including the first sound frequency division module, rising tone cent
Frequency module, third sound frequency division module and falling tone cent frequency module；The filtering unit includes filter capacitor and/or damping
Device；The (PCC) power includes resistance and/or attenuator.
In one embodiment, the filtering unit of the first sound frequency division module includes the first sound damper, and described the
One sound damper is used to filter the voice signal of the first frequency range；
The (PCC) power of the first sound frequency division module includes the first attenuator；The first attenuator input terminal connection
The signal input module, output end connection the first dynamic iron unit and the second dynamic iron unit in parallel, first dynamic iron unit
It is connected by the first sound guide tube with second dynamic iron unit, first sound damper is embedded in first sound guide tube.
In one embodiment, the filtering unit of the second sound frequency division module includes the first capacitance and the second acoustic damping
Device, the damping of second sound damper are less than the damping of first sound damper, first capacitance and the rising tone
Damper is used to filter the voice signal of the second frequency range；
The (PCC) power of the second sound frequency division module includes the second attenuator；
Signal input module described in first capacitance connection, the second attenuator input terminal connection first electricity
Hold, output end connection third dynamic iron unit and the 4th dynamic iron unit in parallel, the third dynamic iron unit and the 4th dynamic iron
Unit is connected by the second sound guide tube, and second sound damper is embedded in second sound guide tube.
In one embodiment, the filtering unit of the third sound frequency division module includes the second capacitance and third acoustic damping
Device, the damping of the third sound damper are less than the damping of second sound damper, second capacitance and the third sound
Damper is used to filter the voice signal of third frequency range；
The (PCC) power of the second sound frequency division module includes first resistor；
Signal input module described in second capacitance connection, described first resistor one end connect second capacitance, separately
One end connection the 5th dynamic iron unit and the 6th dynamic iron unit in parallel, the 5th dynamic iron unit and the 6th dynamic iron unit are logical
The connection of third sound guide tube is crossed, the third sound damper rabbets the third sound guide tube.
In one embodiment, the filtering unit of the falling tone cent frequency module includes third capacitance, the third electricity
Hold the voice signal for filtering the 4th frequency range；
The (PCC) power of the falling tone cent frequency module includes second resistance；
Signal input module described in the third capacitance connection, described second resistance one end connect the third capacitance, separately
One end connection the 7th dynamic iron unit and the 8th dynamic iron unit in parallel, the 7th dynamic iron unit and the 8th dynamic iron unit are logical
Cross the connection of the 4th sound guide tube.
In one embodiment, the voice signal that the first sound frequency division module output frequency range is 20Hz to 180Hz, institute
The frequency for stating the first frequency range is 180Hz or more.
In one embodiment, the voice signal that the second sound frequency division module output frequency range is 180Hz to 2000Hz,
The frequency of second frequency range is 180Hz or less and 2000Hz or more.
In one embodiment, the sound that the third sound frequency division module output frequency range is 2000Hz to 8000Hz is believed
Number, the frequency of the third frequency range is 2000Hz or less and 8000Hz or more.In one embodiment, the falling tone cent frequency
Module exports the voice signal that frequency range is 8000Hz to 20000Hz, and the frequency of the 4th frequency range is 20000Hz or more.
Above-mentioned earphone frequency dividing circuit, including multiple sound frequency division modules pass through each module different filtering unit and work(
Voice signal be divided into multiple and different frequency ranges by rate component, the voice signal of the respective frequency range of each resume module so that each
Interference between a module frequency range reduces, and promotes the sound effect of earphone, and keep sound purer.
Description of the drawings
Fig. 1 is the module map of earphone frequency dividing circuit；
Fig. 2 is the module map of the earphone frequency dividing circuit of an embodiment；
Fig. 3 is the circuit diagram of the earphone frequency dividing circuit of another embodiment.
Specific implementation mode
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used to explain this reality
With novel, it is not used to limit the utility model.
Fig. 1 is the module map of earphone frequency dividing circuit.As shown in Figure 1, the utility model provides a kind of earphone frequency dividing circuit, packet
It includes：At least four sound frequency division modules 10 in parallel, each sound frequency division module handle the voice signal of respective frequency range, correspond to not
Same scene, can according to demand carry out voice signal different scaling down processings, each sound frequency division module corresponds to respective
Frequency range.
Each sound frequency division module is connect with signal input module respectively, and each sound frequency division module is in parallel, signal input module
For input audio signal to each sound frequency division module.
Each sound frequency division module respectively includes sequentially connected dynamic iron unit 101, filtering unit corresponding with filtering frequency range
102, the (PCC) power 103 of power, the voice signal of each sound frequency division module output different frequency range are adjusted.
Dynamic iron unit 101 is applied to moving-iron type earphone, and moving-iron type earphone is the pitman conduction by a precise structure
To the central point of a miniature vibrating diaphragm, to generate the earphone of vibration and sounding.Moving-iron type earphone since unit volume is much smaller,
So duct can be easily put into.
Filtering unit 102 is for filtering, and since each sound module divides voice signal, filtering unit is ear
Important component in electromechanical road sets different filtering devices according to different frequency ranges, to reach preset filter effect.
(PCC) power 103 is for adjusting power, due to there is different demands for earphone, so in different application scenarios
In so that head circuit is obtained the better frequency response curve under each application scenarios by adjusting power, reach better sound effect
Fruit.
Fig. 2 is the module map of the earphone frequency dividing circuit of an embodiment.As shown in Fig. 2, in one embodiment, sound frequency dividing
Module is four, including the first sound frequency division module 100, second sound frequency division module 200,300 and of third sound frequency division module
Falling tone cent frequency module 400；Filtering unit includes filter capacitor and/or damper；(PCC) power includes resistance and/or decaying
Device, it is recognised that above-mentioned device is not limited to for the selection of filtering unit and (PCC) power, it is all that identical function may be implemented
Device should all be in protection domain.
In the present embodiment, the signal output frequency range for corresponding to alternative sounds frequency division module, using different dynamic iron
Unit filters out the voice signal except each sound frequency division module predeterminated frequency range by filtering unit, by not in unison
Different size of capacitance and/or damper are added in cent frequency module, realizes the output of the voice signal of four different frequency ranges, are led to
The filtering frequency range to each filtering unit is crossed, four different outputs is realized, voice signal is finally divided into four different frequency ranges
Output, makes the interference between each sound frequency range reduce, improves sound effect.
By adding different (PCC) powers in alternative sounds frequency division module, as in the present embodiment resistance and/or decline
Subtract device, so that earphone is obtained better frequency response curve, obtain better sound effect.
Fig. 3 is the circuit diagram of the earphone frequency dividing circuit of an embodiment.As shown in figure 3, in one embodiment, the first sound
The filtering unit of frequency division module 100 includes the first sound damper 180, and the first sound damper 180 is used to filter the sound of the first frequency range
Sound signal.
Make the various frictions and the referred to as damping of other inhibitions that free vibration decays, damper is exactly to provide movement
Resistance, the device of depletion kinergety, sound damper correspond to voice signal, can be used for the part in filtering sound signal
Frequency range.
The (PCC) power of first sound frequency division module 100 includes the first attenuator 120；First attenuator, 120 input terminal connects
Connect signal input module 500, output end connection the first dynamic iron unit 140 and the second dynamic iron unit 160 in parallel, the first dynamic iron list
Member 140 is connected with the second dynamic iron unit 160 by the first sound guide tube L1, and the first sound damper 180 is embedded in the first sound guide tube L1
It is interior.
Attenuator is in specified frequency range, and a kind of to introduce the circuit of predetermined decaying, the work of attenuator is frequently
Band refers to that attenuator, attenuator is used to can be only achieved index value within the scope of given frequency, and attenuation describes power and passes through decaying
The degree that becomes smaller of power after device, in the present embodiment, the first attenuator is formed in parallel by two resistance R1 and R2.
In the present embodiment, compound low frequency dynamic iron unit, i.e. the first dynamic iron unit and the second dynamic iron list can be used in dynamic iron unit
Member corresponds to the frequency range of the first sound frequency division module, and the first sound damper 180 is for filtering 180Hz sounds with frequencies above
Signal, the i.e. frequency of the first frequency range are 180Hz or more.Therefore, the first sound frequency division module 100 output frequency range be 20Hz extremely
The voice signal of 180Hz.
Please continue to refer to Fig. 3.In one embodiment, the filtering unit of second sound frequency division module 200 includes the first electricity
Appearance 210 and the second sound damper 280, the damping of the second sound damper 280 is less than the damping of the first sound damper 180, the first electricity
Appearance 210 and the second sound damper 280 are used to filter the voice signal of the second frequency range, and in the present embodiment, the first attenuator passes through
Two resistance R3 and R4 are formed in parallel.The (PCC) power of second sound frequency division module 200 includes the second attenuator 220.
First capacitance, 210 connection signal input module 500,220 input terminal of the second attenuator connects the first capacitance 210, defeated
Outlet connection third dynamic iron unit 240 and the 4th dynamic iron unit 260 in parallel, third dynamic iron unit 240 and the 4th dynamic iron unit
260 are embedded in by the second sound guide tube L2 connections, the second sound damper 280 in the second sound guide tube L2.
In the present embodiment, compound middle low frequency dynamic iron unit, i.e. third dynamic iron unit and the 4th dynamic iron can be used in dynamic iron unit
Unit corresponds to the frequency range of second sound frequency division module, and the first capacitance 210 is used to filter out 180Hz voice signals below,
Second sound damper 280 is used to filter out the voice signal of 2000Hz or more, i.e., the frequency of the second frequency range be 180Hz or less and
2000Hz or more.Therefore, second sound frequency division module 200 exports the voice signal that frequency range is 180Hz to 2000Hz.
Please continue to refer to Fig. 3.In one embodiment, the filtering unit of third sound frequency division module 300 includes the second electricity
Hold 310 and third sound damper 380, the damping of third sound damper 380 is less than the damping of the second sound damper 280, the second electricity
Appearance 310 and third sound damper 380 are used to filter the voice signal of third frequency range；
The (PCC) power of third sound frequency division module 300 includes first resistor 320；
Second capacitance, 310 connection signal input module 500,320 one end of first resistor connect the second capacitance 310, the other end
The 5th dynamic iron unit 340 and the 6th dynamic iron unit 360 in parallel are connected, the 5th dynamic iron unit 340 and the 6th dynamic iron unit 360 are logical
The L3 connections of third sound guide tube are crossed, third sound damper 380 rabbets third sound guide tube L3.
In the present embodiment, compound crown frequency dynamic iron unit, i.e. the 5th dynamic iron unit and the 6th dynamic iron can be used in dynamic iron unit
Unit corresponds to the frequency range of third sound frequency division module, and the second capacitance 310 is used to filter out 2000Hz voice signals below,
Third sound damper 380 is used to filter out the voice signal of 8000Hz or more, i.e., the frequency of third frequency range be 2000Hz or less and
8000Hz or more.Therefore, second sound frequency division module 200 exports the voice signal that frequency range is 180Hz to 2000Hz.
In one embodiment, the filtering unit of falling tone cent frequency module 400 includes third capacitance 410, third capacitance
410 voice signal for filtering the 4th frequency range；
The (PCC) power of falling tone cent frequency module 400 includes second resistance 420；
410 connection signal input module 500 of third capacitance, 420 one end of second resistance connect third capacitance 410, the other end
The 7th dynamic iron unit 440 and the 8th dynamic iron unit 460 in parallel are connected, the 7th dynamic iron unit 440 and the 8th dynamic iron unit 460 are logical
Cross the 4th sound guide tube L4 connections.
In the present embodiment, High Frequency Of Recombination dynamic iron unit, i.e. the 7th dynamic iron unit and the 8th dynamic iron list can be used in dynamic iron unit
Member corresponds to the frequency range of falling tone cent frequency module, and third capacitance 410 is for filtering out 8000Hz voice signals below, i.e.,
The frequency of second frequency range is 8000Hz or less.Therefore, it is 8000Hz to 20000Hz that falling tone cent frequency module 400, which exports frequency range,
Voice signal.
It is appreciated that yes, in other embodiments, the quantity of sound frequency division module can be arranged as required to, and according to
Need the frequency range of the voice signal using sound damper and/or capacitance filter adjusting output.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
1. a kind of earphone frequency dividing circuit, which is characterized in that including：At least four sound frequency division modules in parallel；
Each sound frequency division module is connect with signal input module respectively；
Each sound frequency division module respectively includes sequentially connected dynamic iron unit, filtering unit corresponding with filtering frequency range, adjustment work(
The (PCC) power of rate, the voice signal of each sound frequency division module output different frequency range.
2. earphone frequency dividing circuit according to claim 1, which is characterized in that the sound frequency division module is four, including
First sound frequency division module, second sound frequency division module, third sound frequency division module and falling tone cent frequency module；The filtering
Component includes filter capacitor and/or damper；The (PCC) power includes resistance and/or attenuator.
3. earphone frequency dividing circuit according to claim 2, which is characterized in that
The filtering unit of the first sound frequency division module includes the first sound damper, and first sound damper is for filtering the
The voice signal of one frequency range；
The (PCC) power of the first sound frequency division module includes the first attenuator；Described in the first attenuator input terminal connection
Signal input module, output end connection the first dynamic iron unit and the second dynamic iron unit in parallel, first dynamic iron unit and institute
It states the second dynamic iron unit to connect by the first sound guide tube, first sound damper is embedded in first sound guide tube.
4. earphone frequency dividing circuit according to claim 3, which is characterized in that
The filtering unit of the second sound frequency division module includes the first capacitance and the second sound damper, second sound damper
Damping less than the damping of first sound damper, first capacitance and second sound damper are for filtering the second frequency
The voice signal of section；
The (PCC) power of the second sound frequency division module includes the second attenuator；
Signal input module described in first capacitance connection, the second attenuator input terminal connects first capacitance, defeated
Outlet connection third dynamic iron unit and the 4th dynamic iron unit in parallel, the third dynamic iron unit and the 4th dynamic iron unit are logical
The connection of the second sound guide tube is crossed, second sound damper is embedded in second sound guide tube.
5. earphone frequency dividing circuit according to claim 4, which is characterized in that
The filtering unit of the third sound frequency division module includes the second capacitance and third sound damper, the third sound damper
Damping less than the damping of second sound damper, second capacitance and the third sound damper are for filtering third frequency
The voice signal of section；
The (PCC) power of the third sound frequency division module includes first resistor；
Signal input module described in second capacitance connection, described first resistor one end connect second capacitance, the other end
Connect in parallel the 5th dynamic iron unit and the 6th dynamic iron unit, the 5th dynamic iron unit and the 6th dynamic iron unit pass through the
Three sound guide tubes connect, and the third sound damper rabbets the third sound guide tube.
6. earphone frequency dividing circuit according to claim 5, which is characterized in that
The filtering unit of the falling tone cent frequency module includes third capacitance, and the third capacitance is for filtering the 4th frequency range
Voice signal；
The (PCC) power of the falling tone cent frequency module includes second resistance；
Signal input module described in the third capacitance connection, described second resistance one end connect second capacitance, the other end
Connect in parallel the 7th dynamic iron unit and the 8th dynamic iron unit, the 7th dynamic iron unit and the 8th dynamic iron unit pass through the
Four sound guide tubes connect.
7. earphone frequency dividing circuit according to claim 3, which is characterized in that the first sound frequency division module exports frequency range
Frequency for the voice signal of 20Hz to 180Hz, first frequency range is 180Hz or more.
8. earphone frequency dividing circuit according to claim 4, which is characterized in that the second sound frequency division module exports frequency range
Frequency for the voice signal of 180Hz to 2000Hz, second frequency range is 180Hz or less and 2000Hz or more.
9. earphone frequency dividing circuit according to claim 5, which is characterized in that the third sound frequency division module exports frequency range
Frequency for the voice signal of 2000Hz to 8000Hz, the third frequency range is 2000Hz or less and 8000Hz or more.
10. earphone frequency dividing circuit according to claim 6, which is characterized in that the falling tone cent frequency module output frequency
Section is the voice signal of 8000Hz to 20000Hz, and the frequency of the 4th frequency range is 20000Hz or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721687121.3U CN207744107U (en) | 2017-12-06 | 2017-12-06 | Earphone frequency dividing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721687121.3U CN207744107U (en) | 2017-12-06 | 2017-12-06 | Earphone frequency dividing circuit |
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| Publication Number | Publication Date |
|---|---|
| CN207744107U true CN207744107U (en) | 2018-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721687121.3U Expired - Fee Related CN207744107U (en) | 2017-12-06 | 2017-12-06 | Earphone frequency dividing circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN207744107U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109257676A (en) * | 2018-10-31 | 2019-01-22 | 苏州全频智能科技有限公司 | A kind of Bluetooth earphone system based on audio distortion compensation technique |
| CN109379657A (en) * | 2018-10-31 | 2019-02-22 | 苏州全频智能科技有限公司 | A kind of dynamic iron earphone of wideband sound multiple-unit |
-
2017
- 2017-12-06 CN CN201721687121.3U patent/CN207744107U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109257676A (en) * | 2018-10-31 | 2019-01-22 | 苏州全频智能科技有限公司 | A kind of Bluetooth earphone system based on audio distortion compensation technique |
| CN109379657A (en) * | 2018-10-31 | 2019-02-22 | 苏州全频智能科技有限公司 | A kind of dynamic iron earphone of wideband sound multiple-unit |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20180817 Termination date: 20211206 |