CN106101895A - A kind of noise cancelling headphone and control noise eliminate the method that circuit is turned on and off - Google Patents
A kind of noise cancelling headphone and control noise eliminate the method that circuit is turned on and off Download PDFInfo
- Publication number
- CN106101895A CN106101895A CN201610529777.6A CN201610529777A CN106101895A CN 106101895 A CN106101895 A CN 106101895A CN 201610529777 A CN201610529777 A CN 201610529777A CN 106101895 A CN106101895 A CN 106101895A
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- China
- Prior art keywords
- noise
- space
- adjustment hole
- main casing
- cancelling headphone
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- 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.)
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Classifications
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- 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
- H04R1/1083—Reduction of ambient noise
Abstract
A kind of noise cancelling headphone, and the method that the noise suicide circuit controlling noise cancelling headphone is turned on and off.Described noise cancelling headphone includes forming the main casing of headset main body part, procapsid and noise suicide circuit；In internal space S, definition has interior divider wall, and described internal space S is divided into independent first space S 1 and second space S2 by described interior divider wall；It is characterized in that: in described first space S 1, be provided with the converting unit that audio input signal is converted into acoustic signals；In described second space S2, it is provided with the mike receiving ambient external noise；On the wall of described main casing corresponding for described second space S2, it is provided with adjustment hole, described adjustment hole is provided with and can regulate the door closed, when the door of described adjustment hole completely closes, described noise suicide circuit is shorted, make audio input signal without noise suicide circuit, and be directly fed to earphone.
Description
Technical field
The present invention relates to a kind of field of audio devices, particularly relate to a kind of be applicable to the noise cancelling headphone of audio frequency apparatus, open
The method opening or closing the noise suicide circuit of noise cancelling headphone.
Background technology
Audio frequency apparatus, typically such as earphone, has become as portable electric appts, such as mobile phone, PDA, PC etc.
One of necessary accessory.The generally structure of earphone includes: headset plug, it is used for receiving electronic signal；Speaker, for by electronics
The audio signal of equipment output is converted to voice output.Along with popularizing of mobile communication technology, earphone also needs to accordingly increase
Microphone function, so that user can realize call function.
Even if the noise-reducing design of earphone is generally realized by feedback at present, it is common that given design object, apply certain
Optimization Design obtains the controller frequency characteristic optimized, and uses digital feedback or analog feedback to realize.
Noise cancellation method is designed to by using audio frequency apparatus (such as, earphone) to reduce undesired ambient sound
Sound.The background sound that ambient sound is referred to as occurring in any given position is arbitrarily downgraded.In order to design noise canceling system, audio-source
(such as, earphone) must launch the identical amplitude of ambient sound having and occur at wearer's ear but contrary polarity
Sound wave.Ambient sound waves and the sound wave from earphone combine, to form new ripple, wherein, effectively, at wearer's ear,
Being referred to as in the process of elimination of the phase, two ripples cancel one another out.Gained ambient sound waves is likely to be at such low amplitude, to such an extent as to right
Can not hear in human ear.
In use insert the In-Ear Headphones in the auditory meatus of user increasingly to catch on and portable type media
Device and mobile phone are used along.A reason that these earphones are popular is because them and can isolate sending from earphone
The external noise that sound has adverse effect on.
It is thus desirable to obtain environmental noise by mike, and earphone is made to export contrary waveform.But, noise is isolated
Design makes noise reduction need the external noise received to become difficulty, in addition when environmental noise rank is less, such work side
Formula will cause, and the headphone amplifier circuit in noise suicide circuit is consuming a large amount of power all the time.
For solving this technical problem.The present inventor, through concentrating on studies, proposes a kind of scheme solving this technical problem.
Summary of the invention
Thus setting out, of the present invention to solve the technical problem that and to be to provide a kind of noise cancelling headphone, and opens or close
The method closing the noise suicide circuit of noise cancelling headphone.
The present invention provides a kind of method that noise suicide circuit controlling noise cancelling headphone is turned on and off, described noise reduction ear
Machine includes forming the main casing of headset main body part, procapsid and noise suicide circuit；Described main casing and described procapsid
Between formed there is the hollow bowl structure of internal space S, in described internal space S, definition has an interior divider wall, described in
Described internal space S is divided into independent first space S 1 and second space S2 by divider walls；It is characterized in that: described first
In space S 1, it is provided with the converting unit that audio input signal is converted into acoustic signals；In described second space S2, arrange
There is the mike receiving ambient external noise；On the wall of described main casing corresponding for described second space S2, it is provided with adjustment hole,
Described adjustment hole allows ambient external noise to conduct to mike, but non-conducting is to the auditory meatus of user；Described adjustment hole
Being provided with and can regulate the door closed, when the door of described adjustment hole completely closes, described noise suicide circuit is shorted so that sound
Frequently input signal is without noise suicide circuit, and is directly fed to earphone.
Further, when the door of described adjustment hole is not turned off, described noise suicide circuit is unlocked.
The present invention also provides for a kind of noise cancelling headphone, including being formed as the main casing of headset main body part, procapsid, being attached at
Meatus tube on described procapsid and be attached at the earplug on described meatus tube, and noise suicide circuit；Described main casing
And forming the hollow bowl structure with internal space S between described procapsid, in described internal space S, definition has interior part
Next door, described internal space S is divided into independent first space S 1 and second space S2 by described interior divider wall；Its feature exists
In: in described first space S 1, it is provided with the converting unit that audio input signal is converted into acoustic signals；Described second
In space S 2, it is provided with the mike receiving ambient external noise；Wall at described main casing corresponding for described second space S2
On, it being provided with adjustment hole, described adjustment hole allows ambient external noise to conduct to mike, but non-conducting is to the ear of user
Road；Described adjustment hole is provided with and can regulate the door closed, to regulate the ambient external noise in incoming described second space S2
Size；Described adjustment hole is provided with and can regulate the door closed, and when the door of described adjustment hole completely closes, described noise disappears
Except circuit is shorted so that audio input signal is without noise suicide circuit, and is directly fed to earphone.
Further, in described first space S 1, on the wall of described main casing, offer multiple and external communication
Regulator hole, so that the back pressure that described converting unit produces can discharge rapidly.
Further, the peripheral part of described meatus tube has annular relief, coordinates with described meatus tube at described earplug
Time, prevent the described earplug being nested on described meatus tube from skidding off.
Further, the radio reception central shaft of described mike is mutually perpendicular with the playback central shaft of described converting unit
State.
The invention have the benefit that
1, when adjustment hole is closed, it is not necessary to start noise suicide circuit, greatly reduce the power of consumption.At adjustment hole
When the door of 9 is opened, audio input signal mixes with noise-cancelling signal, and it is enough that the most amplified device guarantees that output signal is in
Level, so that earphone can guarantee that high-precision result of broadcast.
2, mike 6 is separated completely by interior divider wall 11 with converting unit 5 so that mike 6 is not by converting unit 5
Impact, thus mike will not be affected by the acoustical signal that converting unit exports.
3, the effect of regulator hole 21 so that the back pressure produced in converting unit 5 can discharge rapidly, thus alleviates back pressure
Impact, and enhance the earphone result of broadcast to low-frequency sound.
Accompanying drawing explanation
Fig. 1 is the structural representation of first embodiment of the invention；
Fig. 2 is the structural representation of second embodiment of the invention.
Fig. 3 is the schematic flow sheet that control noise of the present invention eliminates the method that circuit is turned on and off.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is further described, but does not limit the invention to these tools
Body embodiment.One skilled in the art would recognize that present invention encompasses and potentially included in Claims scope
All alternatives, improvement project and equivalents.
Embodiment 1
As shown in fig. 1, in earphone 10, including as earphone 10 main part main casing 2, procapsid 3, be attached at
Meatus tube 31 on procapsid and earplug 4.
Meatus tube 31 is the parts that tubulose extends, and earplug 4 attaches on meatus tube 31, particularly, at meatus tube 31
Peripheral part there is annular relief 32, when earplug 4 coordinates with meatus tube 31, prevent the earplug being nested on meatus tube 31 light
Change places and skid off.
This earplug 4 has the cylinder-like part 41 being nested on meatus tube 31, folded back upon from the front end of cylinder-like part 41
Return isolated part 42.Particularly, this isolated part 42 is formed as soft hemispherical, outside earplug 4 inserts in human ear
After auditory meatus, can be in close contact with external auditory meatus, prevent the leakage of sound, enhance the earphone result of broadcast to low-frequency sound.Optional
, the material of this earplug is the material of flexible, compressible, includes but not limited to high-density foam, silicones, rubber etc..And should
Material preferably has great friction coefficient, has prevented landing.
Forming the hollow bowl structure with internal space S between main casing 2 and procapsid 3, this internal space S is by leading
The wire (not shown) arranged in line portion 7 is connected with outside electronic equipment.Between procapsid 3 and meatus tube 31, it is provided with
Noise filtering core 33.Noise filtering core 33 is that the polymeric material with micro-hole is made, and typical material is that supra polymer gathers
Ethylene (ultra high molecular weight Polyethylene, UHMW-PE), or high density polyethylene (HDPE) (high
DensityPolyethylene, HDPE), or politef (Polytetrafluoroethylene, PTFE), or polypropylene
(Polypropylene, PP) etc..
Wherein in this internal space S, definition has interior divider wall 11, and this internal space S is divided by this interior divider wall 11
For independent two parts space S 1 and S2.
In the present embodiment, second space S2 is positioned at the top of the first space S 1.In the first space S 1, it is provided with electricity
The audio signal of subset is converted into the converting unit 5 of acoustic signals, and this converting unit typically can include, loudspeaker, speaker.
On the wall of main casing 2, offer multiple and external communication regulator hole 21, when converting unit 5 works, due to
The effect of regulator hole 21 so that the back pressure produced in converting unit 5 can discharge rapidly, thus alleviates the impact of back pressure, and increases
The strong earphone result of broadcast to low-frequency sound.
Further, in second space S2, it is provided with mike 6.Preferably, the radio reception central shaft of this mike 6 with
The playback central shaft of converting unit 5 is mutually perpendicular state, simultaneously because interior divider wall 11 is by mike 6 and converting unit
5 separate completely so that mike 6 is not affected by converting unit 5, thus the sound that mike will not be exported by converting unit
The impact of signal.
On the wall of main casing 2 corresponding for second space S2, being further opened with adjustment hole 9, this adjustment hole 9 allows external noise
Conduction is to mike 6, but non-conducting is to the auditory meatus of user so that mike 6 can effectively receive external noise, and carries out anti-
Feedback, to realize the effect of high-precision elimination environmental noise.This is because the sky that interior divider wall 11 is combined into procapsid 3
Between relative with meatus tube 31 be isolation.
Particularly, adjustment hole 9 is adapted for variable noise regulation.Optional a kind of implementation is to use slidingtype
Gate 91, this sliding gate 91 can keep each position in sliding process, controls mike 6 according to environmental noise
The noise received.The most also adjustment hole 9 can be completely closed.
Embodiment 2
As in figure 2 it is shown, different from embodiment 1, the first space S 1 is arranged parallel with second space S2.
Interchangeable, the door of adjustment hole 9 is used as the mode of automatic door and realizes.This motor switch can be by micro-
Type piezoelectricity original paper drives.Specifically, it is a fixed dam outside adjustment hole 9, this fixed dam has many micropores；?
Near being provided with a sideboard 96 at fixed dam inside adjustment hole, sideboard 96 is correspondingly arranged on many micropores,
Sideboard can make along a certain direction initialization in fixed dam surface (as to the left or clockwise) straight line or in rotary moving
The micropore of two baffle plates produces dislocation, is blocked by the micropore of fixed dam with the non-celled portion of sideboard.Piezoelectricity original paper 95
It is connected with sideboard 96, can directly drive the movement of sideboard 96.Faint DC source needed for piezoelectric element 95 by
Music player power supply provides.Power line one end is connected with piezoelectricity original paper, and the other end is connected with headset plug.
Embodiment 3
In the present invention, the mike 6 being arranged on earphone is made an uproar for obtaining the environment in the position of the earphone used
Sound.The present invention also provides for a kind of when the door of adjustment hole completely closes, and closes the method that noise suicide circuit has saved power.
In typical noise suicide circuit, audio input signal can be from any kind of sound of electronic equipment
Input source signal.Traditional audio input signal needed first to be fed to audio equalizer circuit before being fed to earphone.
Described audio equalizer circuit includes noise suicide circuit, in noise suicide circuit, defeated from the environmental noise of mike
Enter to be transported to special band elimination filter so that the narrow frequency decay in stopband.Then by the output of band elimination filter with
Audio input signal mixing is fed to amplifier.So make no matter whether mike receives noise signal, noise suicide circuit
All the time in power consumption.
As it is shown on figure 3, combine the earphone 10 that the present invention provides, when the door of adjustment hole 9 completely closes, mike 6 is no longer
Receive environmental noise.Audio input signal is without noise suicide circuit, and is directly fed to earphone.So that audio frequency input
Signal is no longer pass through noise suicide circuit, it is only necessary to through suitable impedance matching circuit, can be by the resistance of audio input signal
Resist and be properly matched earphone, from without starting noise suicide circuit, greatly reduce the power of consumption.
When the door of adjustment hole 9 is opened, audio input signal mixes with noise-cancelling signal, and the most amplified device guarantees defeated
Go out signal and be in enough level, so that earphone can guarantee that high-precision result of broadcast.
The door on and off of adjustment hole 9 and the corresponding relation of noise suicide circuit can be according to technology known to field
It is configured.This is not any limitation as by the present invention, but in order to make it easy to understand, schematically illustrates in this embodiment again.
On the basis of embodiment 1 and 2, the fully closed position at the door of adjustment hole 9 arranges and can arrange line switching, when door closes completely
When closing, line switching is connected, thus noise suicide circuit is shorted thus is not activated by, and audio input signal can be delivered to ear
Machine.When the door is open, line switching disconnects, and noise suicide circuit is properly functioning.
Present invention is simply schematically illustrated by above-mentioned specific embodiment, does not represent the restriction to present invention.
It may occur to persons skilled in the art that, in the present invention, concrete structure can have a lot of versions, but it uses technology
The technical characteristics of scheme is same or similar with the present invention, all should be covered by scope.
Claims (6)
1. controlling the method that the noise suicide circuit of noise cancelling headphone is turned on and off, described noise cancelling headphone includes forming ear
The main casing of owner's body portion, procapsid and noise suicide circuit；Formed between described main casing and described procapsid and have
The hollow bowl structure of internal space S, in described internal space S, definition has interior divider wall, and described interior divider wall is by institute
State internal space S and be divided into independent first space S 1 and second space S2；It is characterized in that:
In described first space S 1, it is provided with the converting unit that audio input signal is converted into acoustic signals；
In described second space S2, it is provided with the mike receiving ambient external noise；
On the wall of described main casing corresponding for described second space S2, being provided with adjustment hole, described adjustment hole allows external environment condition
Noise transmission is to mike, but non-conducting is to the auditory meatus of user；
Described adjustment hole is provided with and can regulate the door closed, and when the door of described adjustment hole completely closes, described noise eliminates
Circuit is shorted so that audio input signal is without noise suicide circuit, and is directly fed to earphone.
2. the method for claim 1, when the door of described adjustment hole is not turned off, described noise suicide circuit is opened
Open.
3. a noise cancelling headphone, including being formed as the main casing of headset main body part, procapsid, being attached on described procapsid
Meatus tube and be attached at the earplug on described meatus tube, and noise suicide circuit；Described main casing and described procapsid it
Between formed there is the hollow bowl structure of internal space S, in described internal space S, definition has interior divider wall, described inside
Described internal space S is divided into independent first space S 1 and second space S2 by partition wall；It is characterized in that:
In described first space S 1, it is provided with the converting unit that audio input signal is converted into acoustic signals；
In described second space S2, it is provided with the mike receiving ambient external noise；
On the wall of described main casing corresponding for described second space S2, being provided with adjustment hole, described adjustment hole allows external environment condition
Noise transmission is to mike, but non-conducting is to the auditory meatus of user；
Described adjustment hole is provided with and can regulate the door closed, to regulate the ambient external noise in incoming described second space S2
Size；
Described adjustment hole is provided with and can regulate the door closed, and when the door of described adjustment hole completely closes, described noise eliminates
Circuit is shorted so that audio input signal is without noise suicide circuit, and is directly fed to earphone.
4. noise cancelling headphone as claimed in claim 3, it is characterised in that: in described first space S 1, at described main casing
On wall, offer multiple and external communication regulator hole, so that the back pressure that described converting unit produces can discharge rapidly.
5. noise cancelling headphone as claimed in claim 3, it is characterised in that: the peripheral part of described meatus tube has annular relief,
When described earplug coordinates with described meatus tube, prevent the described earplug being nested on described meatus tube from skidding off.
6. noise cancelling headphone as claimed in claim 3, it is characterised in that: the radio reception central shaft of described mike is single with described conversion
The playback central shaft of unit is mutually perpendicular state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610529777.6A CN106101895A (en) | 2016-06-30 | 2016-06-30 | A kind of noise cancelling headphone and control noise eliminate the method that circuit is turned on and off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610529777.6A CN106101895A (en) | 2016-06-30 | 2016-06-30 | A kind of noise cancelling headphone and control noise eliminate the method that circuit is turned on and off |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106101895A true CN106101895A (en) | 2016-11-09 |
Family
ID=57212420
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610529777.6A Pending CN106101895A (en) | 2016-06-30 | 2016-06-30 | A kind of noise cancelling headphone and control noise eliminate the method that circuit is turned on and off |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108900942A (en) * | 2018-07-16 | 2018-11-27 | 维沃移动通信有限公司 | A kind of control method for playing back and electronic equipment |
| CN110521214A (en) * | 2017-01-25 | 2019-11-29 | 惠普发展公司，有限责任合伙企业 | Self-cooled earphone |
| US11528550B2 (en) | 2019-07-25 | 2022-12-13 | Hewlett-Packard Development Company, L.P. | Self-cooling headset |
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| CN104581535A (en) * | 2015-01-26 | 2015-04-29 | 深圳市冠旭电子有限公司 | Headset noise reduction method and device |
| CN105357566A (en) * | 2015-10-29 | 2016-02-24 | 青岛歌尔声学科技有限公司 | Voice remote controller and power supply method thereof |
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| CN102473407A (en) * | 2009-08-18 | 2012-05-23 | 伯斯有限公司 | Feedforward anr device acoustics |
| CN202268999U (en) * | 2011-09-09 | 2012-06-06 | 富港电子（东莞）有限公司 | Slip lid type earphone |
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| EP2736266A1 (en) * | 2012-11-21 | 2014-05-28 | ams AG | Signal processing device and active headphone with such a signal processing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110521214A (en) * | 2017-01-25 | 2019-11-29 | 惠普发展公司，有限责任合伙企业 | Self-cooled earphone |
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| US11528550B2 (en) | 2019-07-25 | 2022-12-13 | Hewlett-Packard Development Company, L.P. | Self-cooling headset |
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Application publication date: 20161109 |
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