CN205793189U - 3D sound effect processing circuit for earphone earplug - Google Patents
3D sound effect processing circuit for earphone earplug Download PDFInfo
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- CN205793189U CN205793189U CN201620557224.7U CN201620557224U CN205793189U CN 205793189 U CN205793189 U CN 205793189U CN 201620557224 U CN201620557224 U CN 201620557224U CN 205793189 U CN205793189 U CN 205793189U
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- sound effect
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Abstract
The utility model discloses a kind of 3D sound effect processing circuit for earphone earplug and processing method thereof.3D sound effect processing circuit for earphone earplug includes the input interface for external audio frequency signal, the AD conversion module being connected with input interface, sound effect processor, power amplifier, and output interface；Input interface, output interface all include left channel signals line and right-channel signals line；The audio signal of simulation is converted to digital data transmission to sound effect processor by AD conversion module；It is different and there is the audio signal of time difference that sound effect processor generates many group frequency ranges according to the L channel received and the digital audio and video signals of R channel, exports through L channel, two simulated audio signal output ports of R channel in the way of superposition；Power amplifier exports to output interface after simulated audio signal is carried out power amplification.This utility model is converted to multiple audio signal to original audio signal, plays back in a superimposed manner, and then is played out the audio frequency with 3D effect by earphone earplug.
Description
Technical field
This utility model relates to a kind of sound effect processing circuit, more specifically refers to the 3D audio effect processing for earphone earplug
Circuit.
Background technology
In prior art, earphone and earplug are little due to volume, can only be provided with single pronunciation device.Such structure, makes
Obtain its effect that cannot release 3D audio.
Along with the mobile device of people increases, people's displacement in work and life is also increasing.People more have
More chance listens to the audio signal of Digital Media by earphone earplug.
Therefore, it is necessary to develop a kind of 3D sound effect processing circuit for earphone earplug, to improve people at use ear
The audio frequency effect of machine earplug, increases experience sense.
Summary of the invention
The purpose of this utility model is to overcome the defect of prior art, it is provided that a kind of at the 3D audio of earphone earplug
Reason circuit.
For achieving the above object, this utility model is by the following technical solutions:
For the 3D sound effect processing circuit of earphone earplug, including the input interface for external audio frequency signal, connect with input
The AD conversion module that mouth connects, the sound effect processor being connected with AD conversion module, the power amplifier being connected with sound effect processor, and
The output interface for exporting 3D audio audio signal being connected with power amplifier；Described input interface, output interface all wrap
Include left channel signals line and right-channel signals line；The audio signal of simulation is converted to digital signal and passes by described AD conversion module
Transport to sound effect processor；Described sound effect processor generates many according to the digital audio and video signals of the L channel received and R channel
Organize frequency range difference and there is the audio signal of time difference, through L channel, two analogue audio frequencies letters of R channel in the way of superposition
The output of number output port；After the simulated audio signal that sound effect processor is exported by described power amplifier carries out power amplification,
Output is to output interface.
Its further technical scheme is: also include the input filter circuit being connected between input interface and AD conversion module
With isolation circuit；And the output filter circuit being connected between power amplifier and output interface.
Its further technical scheme is: also include being connected to input filter circuit, output filter circuit and power amplifier three
Audio switching circuit between person, when audio switching circuit works, power amplifier communicates with output filter circuit, now exports
For through the finished audio signal with 3D audio of sound effect processor；When audio switching circuit does not works, input filter
The signal of wave circuit communicates with output filter circuit, the original audio signal for input interface of output.
Its further technical scheme is: also include that the memorizer being connected with sound effect processor, described memorizer storage have
Audio file, audio file is converted to the audio signal of simulation and exports to power amplifier by described sound effect processor.
Its further technical scheme is: also include display lamp and the control knob being connected with sound effect processor, described finger
Show that lamp includes duty lamp and mode of operation lamp；Described control knob include for start or shutdown on & off switch and for
Select the mode key of audio pattern；Described sound effect processor is dsp processor.
Its further technical scheme is: also includes the power module being connected with sound effect processor, and is connected with power module
Battery and USB interface, be also associated with between described USB interface and sound effect processor for upgrading filtering chip.
Its further technical scheme is: described power module includes the management of charging and discharging circuit being connected with battery, with sound
The reduction voltage circuit that effect processor connects, for switching the power supply switch circuit of external power source and internal cell power supply, by 5V power supply
Be converted to the power-switching circuit of 3.3V, and for closing the power switch circuit of locally supplied power source.
This utility model compared with prior art provides the benefit that: this utility model sound effect processing circuit uses at audio
Reason device, the audio frequency of the different frequency range that original audio signal many groups of simulation sound sources based on hearer's diverse location of generation are generated
Signal, and played back by two, the left and right pronunciation device of earphone earplug in a superimposed manner, can simulate out 3D around sound
Ring the 3D audio being had.Significantly improve the experience sense of user.Can also be by the detection of sensor or built-in fixed
Time circuit mode, 3D audio frequency is carried out corresponding change.To improve the fatigue that ear is caused by life-time service earphone earplug
Sense.
With specific embodiment, this utility model is further described below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is this utility model circuit block diagram for the 3D sound effect processing circuit specific embodiment of earphone earplug；
Fig. 2 is this utility model circuit theory diagrams first for the 3D sound effect processing circuit specific embodiment of earphone earplug
Partly (include sound effect processor, control knob, display lamp and memorizer)；
Fig. 3 is this utility model circuit theory diagrams second for the 3D sound effect processing circuit specific embodiment of earphone earplug
Partly (include input interface, input filter circuit, isolation circuit, audio switching circuit, AD conversion module, output filter circuit
And output interface)；
Fig. 4 is this utility model circuit theory diagrams the 3rd for the 3D sound effect processing circuit specific embodiment of earphone earplug
Partly (include power module, battery and USB interface).
Reference
10 input interface 11 input filter circuits
12 isolation circuit 20 AD conversion module
30 sound effect processor 31 memorizeies
32 display lamp 33 control knobs
40 power amplifier 50 output interfaces
51 output filter circuit 60 audio switching circuits
70 power module 71 batteries
72 USB interface 73 filtering chips
Detailed description of the invention
In order to more fully understand technology contents of the present utility model, below in conjunction with specific embodiment to skill of the present utility model
Art scheme is further described and illustrates, but is not limited to this.
As it is shown in figure 1, this utility model is for the 3D sound effect processing circuit of earphone earplug, including for external audio frequency signal
Input interface 10, the AD conversion module 20 being connected with input interface 10, the sound effect processor 30 being connected with AD conversion module 20,
The power amplifier 40 being connected with sound effect processor 30, and be connected with power amplifier 40 for exporting the defeated of 3D audio audio signal
Outgoing interface 50；Input interface 10, output interface 50 all include that left channel signals line and right-channel signals line (also include for picking up
The MIC line of audio signal)；The audio signal of simulation is converted to digital data transmission to sound effect processor by AD conversion module 20
30；The digital audio and video signals of the sound effect processor 30 L channel to receiving and R channel carries out high frequency intermediate frequency low frequency and processes, and/
Or after two carry out delay process between sound channel, and export in the way of analogue signal；Power amplifier 40 is to sound effect processor 30
After the simulated audio signal of output carries out power amplification, output is to output interface 50.
Wherein, input filter circuit 11 and the isolation electricity being connected between input interface 10 and AD conversion module 20 is also included
Road 12；And the output filter circuit 51 being connected between power amplifier 40 and output interface 50.Also include being connected to input filter
Audio switching circuit 60 between circuit 11, output filter circuit 51 and power amplifier 40 three, when audio switching circuit 60 work
When making, power amplifier 40 communicates with output filter circuit 51, now export for having through sound effect processor 30 is finished
The audio signal of 3D audio；When audio switching circuit 60 does not works, the signal of input filter circuit 11 and output filter circuit
51 communicate, the original audio signal for input interface 10 of output.
Also include that the memorizer 31 being connected with sound effect processor 30, memorizer 31 storage have audio file, sound effect processor
30 audio signals that audio file can be converted to simulation export to power amplifier 40, and now, sound effect processor is the equal of
There is the MP3 player of 3D audio.Memorizer 31 can be used for storing other file, such as controls program file.
Also including display lamp 32 and the control knob 33 being connected with sound effect processor 30, display lamp 32 includes duty lamp
With mode of operation lamp；Control knob 33 includes the on & off switch for starting shooting or shut down and for selecting the mode key of audio pattern.
Dividing by frequency, mode of operation can be at least provided with three kinds, high-frequency therapeutic treatment, and IF process and low frequency process.Or press user institute
The scene at place is divided, and at least provided with three kinds, closes spatial mode, square type, and aisle (or referred to as culvert type).
Also include the power module 70 being connected with sound effect processor 30, and the battery 71 and USB being connected with power module 70
Interface 72, is also associated with the filtering chip 73 for upgrading between USB interface 72 and sound effect processor 30.
In the circuit theory diagrams of Fig. 3, the input interface of audio frequency is GNDN, LIN, RIN and MIC.Input filter circuit bag
Include L13, L14, L15, L17, C47, C48, C55, C56, C57, and R36, R37.By LIN [2], RIN [2] with U8(it is again
SGM3002 chip, isolates circuit) COM1, COM2 end foot connect, and with U9's (i.e. SGM3717 chip, audio switching circuit)
NC1, NC2 end foot connects.Output interface LO, RO of audio frequency is through L20, L21 (i.e. output filter circuit also includes C49, C50)
Connect with COM1, COM2 end foot of U9 (i.e. SGM3717 chip, audio switching circuit).U8(i.e. SGM3002 chip, isolation electricity
Road) NO1, NO2 end foot and U5(i.e. AD1370 chip, AD conversion module) AINL, AINR end foot connect.U5(i.e. AD1370
Chip, AD conversion module) digitized audio signal transmission to U1 (i.e. M3802 microcontroller chip, sound effect processor) is entered
Row audio effect processing.
As in figure 2 it is shown, sound effect processor have employed M3802 microcontroller chip (a kind of dsp processor chip), its periphery
Be configured with C41-C43 constitute filter circuit, R25, R26 and C39 constitute battery voltage detection circuit, and by R30, C32,
The clock circuit that C33 is constituted.Memorizer is U5 (i.e. EN25Q16 chip).
As shown in Figure 4, power module includes management of charging and discharging circuit (i.e. U2,4054 cores being connected with battery (i.e. BAT)
Sheet), for the reduction voltage circuit U10 (LP3220 chip) being connected with sound effect processor U1, it is used for switching external power source and inside electricity
The power supply switch circuit Q1(i.e. field effect transistor of pond power supply, SI2301 type), by the power-switching circuit U3 that 5V Power convert is 3.3V
(i.e. voltage conversion chip, LP3986 type), and for closing the power switch circuit Q2(i.e. field effect transistor of locally supplied power source, SI2301
Type), like this, power supply can be saved, improve the use time of single charge.Filtering chip therein is CMF2012 chip,
It is connected between USB interface and sound effect processor, is the upgrade interface of sound effect processor.Input interface therein is that audio frequency is inserted
Head, output interface is audio jack.Owing to recorded audio signals is made without Audio Processing, so, input interface and output interface
MIC pickup end foot be joined directly together.
In other embodiments, it is also possible to do not use audio switching circuit, 3D audio effect processing mode can only be used, the most straight
Connect the working method of output original audio.
In other embodiments, above-mentioned each device may be used without other model.
In other embodiments, it is also possible to be provided with the slot of external connection of storage card, the audio file of more capacity can be stored.
In other embodiments, when wearing the head of user of earphone or earplug and changing, by the biography being provided with
Sensor, switching L channel and the time difference of R channel, to adapt to the head move angle of user；Or, when wearing earphone
User when walking, by the sensor being provided with, detects that the speed of walking, sound effect processor simulated humanbody left-right ear exist
The audio signal received during this walking states, and the pronunciation device exported to earphone or earplug.
In other embodiments, it is also possible to have additional GPS module, by GPS module, get the position at user
Put, and then automatic switchover mode of operation, such as closing spatial mode, cutting between square type, and aisle (or referred to as culvert type)
Change.So can allow user using this earphone or during earplug, 3D audio can change in real time, and with its position phase
Coupling.The most such as, user is through crossing, and sound effect processor, the audio frequency output that can close its direction to the car (crosses crossing
First half close L channel, cross crossing latter half close R channel), allow its receive direction to the car car vehicle sound
Sound, to improve the safety by crossing.
In other embodiments, it is also possible to have additional time block, user is exceeded the 3D audio pattern of setting time
Switch over, or close 3D audio pattern, allow the ear of user jump out from a certain fixed model, reduce in a certain kind
Feeling of fatigue under fixed model.
In order to be able to embody 3D audio, the size of earphone earplug wants certain requirement, and optimum size is that diameter is at 10-13mm
Between.
In sum, this utility model sound effect processing circuit uses sound effect processor, generates many to original audio signal
Group simulation based on hearer's diverse location sound source and the audio signal of different frequency range that generates, and in a superimposed manner by earphone ear
Two, the left and right pronunciation device of plug plays back, and can simulate out the 3D audio that 3D is had around sound equipment.Dramatically improve
The experience sense of user.Can also be by the detection of sensor, or the mode of built-in timing circuit, 3D audio frequency is carried out phase
Corresponding change.To improve the feeling of fatigue that ear is caused by life-time service earphone earplug.
Above-mentioned only further illustrate technology contents of the present utility model with embodiment, in order to reader is easier to understand,
But not representing embodiment of the present utility model and be only limitted to this, any technology done according to this utility model extends or recreation,
All by protection of the present utility model.Protection domain of the present utility model is as the criterion with claims.
Claims (7)
1. for the 3D sound effect processing circuit of earphone earplug, it is characterised in that include the input interface for external audio frequency signal,
The AD conversion module being connected with input interface, the sound effect processor being connected with AD conversion module, the merit being connected with sound effect processor
Electric discharge road, and the output interface for exporting 3D audio audio signal being connected with power amplifier；Described input interface, output
Interface all includes left channel signals line and right-channel signals line；
The audio signal of simulation is converted to digital data transmission to sound effect processor by described AD conversion module；
With the digital audio and video signals of R channel, described sound effect processor generates how group frequency range is different according to the L channel received
And there is the audio signal of time difference, through L channel, two simulated audio signal output ports of R channel in the way of superposition
Output；
After the simulated audio signal that sound effect processor is exported by described power amplifier carries out power amplification, output connects to output
Mouthful.
3D sound effect processing circuit for earphone earplug the most according to claim 1, it is characterised in that also include being connected to
Input filter circuit between input interface and AD conversion module and isolation circuit；And be connected to power amplifier and output interface it
Between output filter circuit.
3D sound effect processing circuit for earphone earplug the most according to claim 2, it is characterised in that also include being connected to
Audio switching circuit between input filter circuit, output filter circuit and power amplifier three, when audio switching circuit works
Time, power amplifier communicates with output filter circuit, now export for there is 3D audio through sound effect processor is finished
Audio signal；When audio switching circuit does not works, the signal of input filter circuit communicates with output filter circuit, output be
The original audio signal of input interface.
3D sound effect processing circuit for earphone earplug the most according to claim 1, it is characterised in that also include and audio
The memorizer that processor connects, described memorizer storage has audio file, and audio file is changed by described sound effect processor
Audio signal for simulation exports to power amplifier.
3D sound effect processing circuit for earphone earplug the most according to claim 1, it is characterised in that also include and audio
The display lamp of processor connection and control knob, described display lamp includes duty lamp and mode of operation lamp；Described control
Button processed includes the on & off switch for starting shooting or shut down and for selecting the mode key of audio pattern；Described sound effect processor is
Dsp processor.
3D sound effect processing circuit for earphone earplug the most according to claim 1, it is characterised in that also include and audio
The power module that processor connects, and the battery that is connected with power module and USB interface, described USB interface and audio effect processing
The filtering chip for upgrading it is also associated with between device.
3D sound effect processing circuit for earphone earplug the most according to claim 6, it is characterised in that described power supply mould
Block includes the management of charging and discharging circuit being connected with battery, the reduction voltage circuit being connected with sound effect processor, is used for switching external power source
With the power supply switch circuit of internal cell power supply, it is the power-switching circuit of 3.3V by 5V Power convert, and is used for closing local
The power switch circuit of power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620557224.7U CN205793189U (en) | 2016-06-12 | 2016-06-12 | 3D sound effect processing circuit for earphone earplug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620557224.7U CN205793189U (en) | 2016-06-12 | 2016-06-12 | 3D sound effect processing circuit for earphone earplug |
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| Publication Number | Publication Date |
|---|---|
| CN205793189U true CN205793189U (en) | 2016-12-07 |
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|---|---|---|---|
| CN201620557224.7U Expired - Fee Related CN205793189U (en) | 2016-06-12 | 2016-06-12 | 3D sound effect processing circuit for earphone earplug |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017215237A1 (en) * | 2016-06-12 | 2017-12-21 | 深圳奥尼电子股份有限公司 | 3d sound effect processing circuit for earphone or earplug, and processing method therefor |
| JP2021110916A (en) * | 2020-01-10 | 2021-08-02 | 深▲せん▼市星科啓電子商務有限公司 | Noise reduction device and noise reduction method based upon plurality of sounding units |
-
2016
- 2016-06-12 CN CN201620557224.7U patent/CN205793189U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017215237A1 (en) * | 2016-06-12 | 2017-12-21 | 深圳奥尼电子股份有限公司 | 3d sound effect processing circuit for earphone or earplug, and processing method therefor |
| JP2021110916A (en) * | 2020-01-10 | 2021-08-02 | 深▲せん▼市星科啓電子商務有限公司 | Noise reduction device and noise reduction method based upon plurality of sounding units |
| JP7082148B2 (en) | 2020-01-10 | 2022-06-07 | 深▲せん▼市星科啓電子商務有限公司 | Noise reduction device and noise reduction method based on multiple sounding units |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Baoan District Xin''an street Shenzhen city Guangdong province 518102 Liuxian road two Honghui Industrial Park No. 5 Building 2 floor, 3 floor, 6 floor, 7 floor, 8 floor of the west half layer, 9 floor Patentee after: Shenzhen Aoni electronic Limited by Share Ltd Address before: Baoan District Xin''an street Shenzhen city Guangdong province 518102 Liuxian road two Honghui Industrial Park No. 5 Building 2 floor, 3 floor, 6 floor, 7 floor, 8 floor of the west half layer, 9 floor Patentee before: Shenzhen Aoni Electronic Industry Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20210612 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |