CN102457790B - Active noise reduction earphone and earphone detection device - Google Patents
Active noise reduction earphone and earphone detection device Download PDFInfo
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- CN102457790B CN102457790B CN201010514675.XA CN201010514675A CN102457790B CN 102457790 B CN102457790 B CN 102457790B CN 201010514675 A CN201010514675 A CN 201010514675A CN 102457790 B CN102457790 B CN 102457790B
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Abstract
The embodiment of the invention discloses an active noise reduction earphone which executes a noise reduction program through an electronic device. The active noise reduction earphone comprises a first joint, wherein the first joint comprises a first contact part which is used for receiving a sound source signal of a first sound channel, a second contact part which is used for receiving a sound source signal of a second sound channel, a third contact part which is in suspension connection, and a first grounding part which is used for grounding; when the first joint is inserted into an earphone joint socket of the electronic device, the electronic device detects voltage of the third contact part; and if the voltage is first voltage, the electronic device starts and executes the noise reduction program.
Description
Technical field
The present invention is a kind of earphone, particularly a kind of active noise reduction earphone and its checkout gear.
Background technology
Active noise reduction (active noise cancelled, ANC) earphone is current a kind of new product on the market, can help user in the time using earphone, to reduce the impact of environmental noise, user can be had and better listen to quality, but the price of at present general commercially available prod is still quite expensive, so still not universal.Active noise reduction earphone is mainly to utilize noise measuring microphone to receive extraneous noise signal at present, then sees through Digital Signal Processing, sends an anti-phase noise signal, eliminates by this extraneous noise.But so, active noise reduction earphone just must increase many extra circuit, and needs to see through the circuit of other power supplys for Digital Signal Processing, and therefore active noise reduction earphone also becomes relative heaviness.
Summary of the invention
The object of the present invention is to provide a kind of active noise reduction earphone, the resource that sees through the electronic installation connecting is carried out noise abatement processing.
Other objects of the present invention and advantage can be further understood from the disclosed technical characterictic of the present invention.
For reaching above-mentioned one or part or all of object or other objects, one embodiment of the invention provide a kind of active noise reduction earphone, see through an electronic installation and carry out a noise abatement program.This active noise reduction earphone comprises one first joint, and this joint comprises one first contact site, in order to receive the sound source signal of one first sound channel; One second contact site, in order to receive the sound source signal of a second sound channel; One the 3rd contact site, suspension joint; And one first grounding parts, in order to ground connection.Wherein, in the time that this first joint inserts an Earphone joint socket of this electronic installation, this electronic installation detects a voltage of the 3rd contact site, if when this voltage is first voltage, this electronic installation starts and carries out a noise abatement program.
Another embodiment of the present invention is a kind of headset detection device, is applicable to an electronic installation, in order to identify the pattern of an earphone, comprises a biased element, receives a supply voltage; One earphone interface, comprises a contact point, in order to contact a specific contact site of an Earphone joint; One voltage detection unit, in order to detect a voltage of this contact point; And a judging unit, judge the pattern of this earphone according to this voltage.If wherein this judging unit judges that, when the pattern of this earphone is an active noise reduction earphone, this electronic installation is carried out a noise abatement program.
Another embodiment of the present invention is the method for the pattern of a kind of identification one earphone, includes following steps: whether detection one earphone interface has by an Earphone joint of this earphone is inserted; In the time detecting that this Earphone joint inserts this earphone interface, detect a detection voltage of the contact point on this Earphone joint; Judge the pattern of this earphone according to this detection voltage; And in the time that the pattern of this earphone is an active noise reduction earphone, sees through an electronic installation and carry out a noise abatement program.
Brief description of the drawings
Fig. 1 is the joint schematic diagram of generally having the earphone of measuring ability;
Fig. 2 is according to the schematic diagram of an embodiment of the Earphone joint of active noise reduction earphone of the present invention;
Fig. 3 is the schematic diagram having according to an embodiment of the system of the interface of one or four joint formula joints of the present invention;
Fig. 4 A, Fig. 4 B and Fig. 4 C are the schematic diagram of 3 kinds of Earphone joints;
Fig. 5 is according to a kind of also flow chart of the method for identifying earphone pattern that detects of the present invention.
Drawing reference numeral:
10～joint
12～recognition device
14～Earphone joint
20～joint
21～three-section type joint
22～tetra-joint formula joints
The 23～four contact site
The 24～five contact site
25～the second grounding parts
26～the first contact sites
27～the second contact sites
The 28～three contact site
29～the first grounding parts
31～biased element
32～contact point
33～microphone
34～voltage detection unit
35～judging unit
36～active noise reduction mechanism
41～joint
42～joint
43～joint
44～contact site
45～contact site
46～contact site
Embodiment
In order to improve current active noise reduction earphone, the present invention proposes a new conception, see through and there is the earphone of built-in microphone and utilize computer or other electronic installations are carried out the action of noise abatement.
For instance, in the time that COMPUTER DETECTION is inserted to the Earphone joint with built-in microphone, just can start corresponding program, receive noise for the microphone on earphone and produce anti-phase noise signal, reach the function of noise abatement.And existing active noise reduction earphone is limited to the digital signal processing capability of processor, can only process for the noise of some frequency range, and utilize concept of the present invention, see through computer, notebook, mobile phone, individual mobile assistant (personal digital assistant, or the operational capability of other similar arithmetic units PDA), may be for more frequency range, carry out faster the processing of noise abatement, allow user better be listened to quality.Hereinafter arrange in pairs or groups active noise reduction earphone of the present invention as example explanation taking computer, but do not limit the present invention in this, the arithmetic unit that other are similar, as notebook or mobile phone etc. all can use with active noise reduction earphone collocation of the present invention.
The active noise reduction earphone that concept proposes according to the present invention, must utilize the operational capability of computer to process noise signal, therefore needs the active noise reduction program on computer to coordinate.But consider the compatibility with general earphone, computer must first judge that the earphone of current plugged earphone joint is general earphone or active noise reduction earphone, just determine to close or to open active noise reduction program in computer, avoid starting active noise reduction function at general earphone, and waste computer resource.
Please refer to Fig. 1.Fig. 1 is the joint schematic diagram of generally having the earphone of measuring ability.Joint 10 mainly can be divided into two parts, and one is Earphone joint 14, and another is recognition device 12.In general Earphone joint 14 is the source of sound joint of 3.5mm or the source of sound joint of 2.5mm, but the source of sound joint of other patterns also can be suitable for.12 of recognition devices are the patterns of the earphone current in order to apprizing system.But because such Earphone joint 10 needs corresponding Earphone joint interface, if there is no corresponding interface on the computer that user uses, cannot reach the effect of automatic identification, and can cause extra expenditure.
Fig. 2 is according to the schematic diagram of an embodiment of the Earphone joint of active noise reduction earphone of the present invention.Active noise reduction earphone in the present embodiment has comprised two microphones, lays respectively on the element of left and right acoustic channels of earphone.The joint 20 of active noise reduction earphone comprises three-section type joint 21 and 22 two parts of four joint formula joints.In the present embodiment, three-section type joint 21 and four joint formula joints 22 are to link together, but both can also separate.Three-section type joint 21 has comprised the 4th contact site 23, the 5th contact site 24 and the second grounding parts 25, the voice signal that wherein the 4th contact site 23 receives in order to receive left side microphone, the voice signal that the 5th contact site 24 receives in order to receive the right microphone, the second grounding parts 25 is ground connection.Be noted that the received voice signal of the 4th contact site 23 and the 5th contact site 24 can exchange.
Moreover, four joint formula joints 22 have comprised the first contact site 26, the second contact site 27, the 3rd contact site 28 and the first grounding parts 29, the left channel signals that wherein the first contact site 26 transmits computer is sent to one first sounding component (as loud speaker) of earphone, the right-channel signals that the second contact site 27 transmits computer is sent to one second sounding component of earphone, the 3rd contact site 28 suspension joints, the first grounding parts 29 is ground connection.Four general joint formula joints are available to the earphone with built-in microphone and use, owing to only having a contact site, thus only need single microphone, and the sound signal quality receiving is also poor.The present invention has utilized the structure of four joint formula joints 22, and by the 3rd contact site 28 suspension joints.In the time that four joint formula joints 22 insert the earphone interface of computer, a testing circuit corresponding on earphone interface on computer can be electrically connected with the 3rd contact site 28, make testing circuit a voltage be detected, computer can judge according to this voltage the headset type of current insertion.With the present embodiment, testing circuit can provide a bias voltage VCC, can be electrically connected with the 3rd contact site 28 and work as testing circuit, because the relation of the 3rd contact site 28 suspension joints, the voltage that this computer-chronograph receives can be also VCC, what therefore computer just can be known current insertion is active noise reduction earphone, starts corresponding active noise reduction program, and the voice signal sending according to reception three-section type joint 21 carries out noise reduction process.
Fig. 3 is the schematic diagram having according to an embodiment of the system of the interface of one or four joint formula joints of the present invention.Coordinate Fig. 2 explanation, in the time that four joint formula joints insert, the 3rd contact site 28 is connected with contact point 32.Computer provides supply voltage VCC(about 5V), and biased element 31 is a resistance, in order to dividing potential drop V1 to be provided.Because the circuit of Fig. 3 is taking the existing earphone with monophony microphone as explanation at present, therefore the 3rd original contact site 28 is to be connected to microphone 33, therefore can allow the voltage that produces dividing potential drop V1 be about 2V.The large I of dividing potential drop V1 sees through the resistance value size of adjusting biased element 31.And if four joint formula joints of the present invention are while inserting, because the relation of the 3rd contact site 28 suspension joints, so now the size of dividing potential drop V1 is identical with VCC.Therefore the voltage detection unit 34 in computer can continue to detect dividing potential drop V1, and sends the magnitude of voltage detecting to judging unit 35.If what judging unit 35 judged now insertion is that judging unit 35 is sent an enabling signal according to active noise reduction earphone of the present invention, carry out noise reduction function by the active noise reduction mechanism 36 in computer.Active noise reduction mechanism 36 can be according to the sound source signal of the microphone receiving, and as seen through the microphone sound source signal of the left and right acoustic channels that in Fig. 2, the 4th contact site 23 and the 5th contact site 24 transmit, generation one anti-phase sound source signal, to offset outside noise.
Can be learnt by Fig. 3, the size of dividing potential drop V1 is to drop on VCC and 0(ground connection) between, therefore can utilize this feature allow computer can identification other earphone pattern.Fig. 4 A, Fig. 4 B and Fig. 4 C are the schematic diagram of three kinds of Earphone joints, please refer to Fig. 4 A, Fig. 4 B and Fig. 4 C.In Fig. 4 A, an embodiment of the Earphone joint that joint 41 uses for active noise reduction earphone of the present invention, wherein the part of contact site 44 is suspension joints.In Fig. 4 B, joint 42 is joints that an earphone (hereinafter referred to as ear microphone) with monophony microphone uses, and wherein contact site 45 is the microphones that are connected on earphone.In Fig. 4 C, joint 43 is three-section type Earphone joints, and contact site 46 is ground connection.For example, in the time that joint 41 inserts the system having in Fig. 3 according to the interface of one or four joint formula joints of the present invention, due to the relation of contact site 44 suspension joints, so the voltage that voltage detection unit detects is VCC.In the time that joint 42 inserts the system having in Fig. 3 according to the interface of one or four joint formula joints of the present invention, the microphone connecting because of position contact site 45 can cause a dividing potential drop, so voltage detection unit can detect voltage V1, wherein V1 0 and VCC between.In general VCC is 5V, sees through the resistance of biased element 31 and microphone, and the voltage detecting is about 2V.In the time that joint 43 inserts the system having in Fig. 3 according to the interface of one or four joint formula joints of the present invention, because of the relation of position contact site 46 ground connection, so the voltage that voltage detection unit detects is 0.If therefore voltage detecting to voltage while being VCC, just can pick out is active noise reduction earphone, therefore just can start corresponding active noise reduction mechanism 36, carries out noise abatement processing by computer.
In this manual, although the only explanation as an example of three kinds of Earphone joints example, prior art person can see through the design of circuit, allows voltage detection unit different voltage be detected, reaches the object of identification.
Fig. 5 is according to a kind of also flow chart of the method for identifying earphone pattern that detects of the present invention.In the time of step S51, whether the first Test earphone interface of computer and microphone interface have joint to insert simultaneously.If have, enter step S54, this computer-chronograph can detect the voltage of a specific contact of the Earphone joint of plugged earphone interface, as the 3rd contact site 28 in Fig. 2.In the present embodiment, see through the circuit design of earphone interface, if what use is ear microphone, COMPUTER DETECTION to voltage be 2V.If COMPUTER DETECTION to the voltage VCC that provides with computer of voltage when identical, can to judge what now use be according to active noise reduction earphone of the present invention to computer.If COMPUTER DETECTION to voltage be 0, can to judge now what use be general earphone to computer.
When computer judge use be active noise reduction earphone time, computer can start corresponding noise abatement program, receives and produces an anti-phase noise signal according to the noise signal that sent by microphone.When computer judge use be ear microphone time, the voice signal that computer can selective reception be received by earphone interface, and stop receiving the voice signal being sent by microphone interface.When computer judge use be general earphone time, computer can receive the voice signal being sent by microphone interface.
In the time of step S51, if computer does not have Test earphone interface and microphone interface to have joint to insert simultaneously, enter step S52.In step S52, computer first judges that earphone interface has non junction to insert.If COMPUTER DETECTION, to there being joint to insert, enters step S55, in step S55, computer can first detect the voltage of a specific contact of the Earphone joint of plugged earphone interface, as the 3rd contact site 28 in Fig. 2.In the present embodiment, see through the circuit design of earphone interface, if what use is ear microphone, COMPUTER DETECTION to voltage be 2V.If the voltage therefore detecting in step S56 is 2V, what represent now insertion is ear microphone, the voice signal that computer meeting selective reception is received by earphone interface, and stop receiving the voice signal being sent by microphone interface.If the voltage detecting is not 2V, what represent now insertion is general earphone.
In the time of step S52, if computer does not have Test earphone interface to have joint to insert, enter step S53, computer continuation detection microphone connects hole has non junction to insert.If detect, joint inserts, and when computer judgement makes, has use microphone, and computer can receive the voice signal that microphone sends.Be noted that computer only has in the time detecting use active noise reduction earphone, computer just can start corresponding noise abatement program.In other cases, computer can automatically not start noise abatement program, unless user's choice for use.
The above, it is only preferred embodiment of the present invention, when not limiting scope of the invention process with this, the simple equivalence of generally doing according to the claims in the present invention and invention description content changes and modifies, and all still remains within the scope of the patent.Arbitrary embodiment of the present invention or claim must not reached the disclosed whole objects of the present invention or advantage or feature in addition.In addition, summary part and title are only for the use of auxiliary patent document search, are not used for limiting interest field of the present invention.
Claims (7)
1. a headset detection device, is applicable to an electronic installation, in order to identify the pattern of an earphone, it is characterized in that, described headset detection device comprises:
One biased element, receives a supply voltage;
One earphone interface, comprises a contact point, in order to contact a specific contact site of an Earphone joint;
One voltage detection unit, detects voltage in order to detect one of described contact point; And
One judging unit, judge the pattern of described earphone according to described detection voltage, in the time that this detection voltage of this contact point is this supply voltage, this judging unit judges that the pattern of this earphone is an active noise reduction earphone, and in the time that this detection voltage of this contact point is first voltage, this judging unit judges that the pattern of this earphone is one to have the earphone of monophony microphone, wherein in the time that described judging unit judges that the pattern of described earphone is an active noise reduction earphone, described electronic installation is carried out a noise abatement program and is received the voice signal from a microphone interface.
2. headset detection device as claimed in claim 1, is characterized in that, described electronic installation is carried out described noise abatement program and produced an anti-phase noise signal according to described voice signal.
3. headset detection device as claimed in claim 1, it is characterized in that, described headset detection device also comprises a microphone interface, and in the time that described microphone interface and described earphone interface all have joint to insert, described electronic installation just can be carried out described noise abatement program.
4. a method for the pattern of identification one earphone, is characterized in that, described method includes following steps:
Whether detect an earphone interface has by an Earphone joint of described earphone and inserts;
In the time detecting that described Earphone joint inserts described earphone interface, detect a detection voltage of the contact point on described Earphone joint;
Judge the pattern of described earphone according to described detection voltage;
In the time that this detection voltage is a supply voltage, the pattern that judges this earphone is an active noise reduction earphone;
In the time of this detection voltage one first voltage, the pattern that judges this earphone is one to have the earphone of monophony microphone; And
In the time that the pattern of described earphone is this active noise reduction earphone, see through an electronic installation and carry out a noise abatement program, and this electronic installation receives the voice signal from a microphone interface.
5. method as claimed in claim 4, is characterized in that, when described electronic installation is carried out described noise abatement program and produced an anti-phase noise signal according to described voice signal.
6. method as claimed in claim 4, it is characterized in that, when described detection voltage be a supply voltage and detect a microphone interface have by one microphone joint insert time, the pattern that judges described earphone is described active noise reduction earphone, and send a voice signal of described microphone joint to described electronic installation, in order to carry out described noise abatement program.
7. method as claimed in claim 6, is characterized in that, described electronic installation is carried out described noise abatement program and produced an anti-phase noise signal according to described voice signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010514675.XA CN102457790B (en) | 2010-10-21 | 2010-10-21 | Active noise reduction earphone and earphone detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010514675.XA CN102457790B (en) | 2010-10-21 | 2010-10-21 | Active noise reduction earphone and earphone detection device |
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| CN102457790A CN102457790A (en) | 2012-05-16 |
| CN102457790B true CN102457790B (en) | 2014-11-05 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102769816B (en) * | 2012-07-18 | 2015-05-13 | 歌尔声学股份有限公司 | Device and method for testing noise-reduction earphone |
| CN103024631A (en) * | 2012-12-18 | 2013-04-03 | 广东欧珀移动通信有限公司 | Method and device of noise reduction of earphone |
| CN104284273B (en) * | 2013-07-01 | 2018-03-30 | 美律电子(深圳)有限公司 | Portable electric device and corresponding anti-noise earphone |
| KR20150110202A (en) * | 2014-03-24 | 2015-10-02 | 삼성전자주식회사 | Electronic device, audio device, and method for supplying power to the audio deivce |
| US9635449B2 (en) * | 2014-12-24 | 2017-04-25 | Wisol Co., Ltd. | Active earphone authentication method |
| CN105163221B (en) * | 2015-09-30 | 2019-06-28 | 广州三星通信技术研究有限公司 | The method and its electric terminal of earphone active noise reduction are executed in electric terminal |
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