CN202818556U - Noise reduction earphone - Google Patents
Noise reduction earphone Download PDFInfo
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- CN202818556U CN202818556U CN201220432719.9U CN201220432719U CN202818556U CN 202818556 U CN202818556 U CN 202818556U CN 201220432719 U CN201220432719 U CN 201220432719U CN 202818556 U CN202818556 U CN 202818556U
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- noise reduction
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Abstract
The utility model discloses a noise reduction earphone, comprising a horn, an earphone cord, an audio frequency interface, a noise reduction module and several microphones. The microphone comprises at least two word sending microphones and at least two word receiving microphones; the noise reduction module comprises a word sending noise reduction processing unit, a word receiving noise reduction processing unit, a power supply and a change over switch. The input signal of each word sending microphone is divided to two paths, one path is connected to the audio frequency interface through the earphone cord after connected with the word sending noise reduction processing unit, the other path is connected with the audio frequency interface through the earphone cord after connected with the change over switch through a lead, the output terminal of the word receiving noise reduction processing unit is connected with the horn through the earphone cord, and the signals input by the word sending microphones are controlled to be directly output or output after noise reduction through the change over switch.
Description
Technical field
The utility model relates to the earphone art, refers in particular to a kind of noise cancelling headphone.
Background technology
The raising of social informatization degree makes people to communicate anywhere or anytime and to exchange, and the extensive use of various communication equipments and technology is very easy to people's life and has improved operating efficiency.Yet the more serious problem that the development of society brings is noise problem, communicate in noise circumstance, badly influence definition and the intelligibility of communication speech, when the noise height to a certain extent the time, not only communication can't be carried out, and can injure people's hearing and physically and mentally healthy the generation.
For under strong noise background, communicating problem, existing technology solution party generally carries out noise reduction process from following two aspects: be to send the signal to noise ratio of the words end employing acoustics signal processing technology raising voice signal that microphone picks up at communication headset on the one hand, make remote subscriber can not hear communication headset user's speech.Need to improve the signal to noise ratio of callee voice in the communication headset callee on the other hand, make near-end earphone wearer can not hear the voice signal that remote subscriber is brought.
In prior art, the noise reduction module arranged on verbal system is generally switched on power supply always, once electric quantity of power supply exhaust, just can't normal talking, the integral body of having to abandons replacing, very not environmental protection, useful life is short.Therefore, be necessary to propose the deficiency that a kind of new voice call noise reduction scheme is eliminated traditional noise reduction mode.
The utility model content
In view of this, the utility model is for the disappearance of prior art existence, its main purpose is to provide a kind of noise cancelling headphone, can and send the voice signal of words end to carry out noise reduction to callee simultaneously, reach conversation and audition and act on clearly, and control by diverter switch, in the situation that environment is noisy around, can select the noise reduction process pattern, and, in the situation that power supply exhausts or quiet environment can be selected the normal talking pattern, apply very convenient.
For achieving the above object, the utility model adopts following technical scheme:
A kind of noise cancelling headphone, include loudspeaker, earphone cord, audio interface, noise reduction module and several microphones, described microphone comprises that at least two are sent words microphone and at least two to be talked about microphone, described noise reduction module comprises send the words noise reduction processing unit, talked about noise reduction processing unit, power supply and diverter switch, the aforementioned input signal of words microphone that send divides two-way, after sending the words noise reduction processing unit, one tunnel connection receives on audio interface by earphone cord, also receive on audio interface by earphone cord after connecting diverter switch by wire on another road, and the output of being talked about noise reduction processing unit is received on loudspeaker by earphone cord, by diverter switch, with control, send the signal of words microphone input directly export or export through noise reduction.
Preferably, the described noise reduction processing unit of being talked about shares same group of power supply, diverter switch and shares an earth terminal with sending the words noise reduction processing unit.
Preferably, described diverter switch comprises a slip contact and the first fixed contact, the second fixed contact, the 3rd fixed contact, the 4th fixed contact, this power output end is connected on the first fixed contact, and this second fixed contact is received and sent the words noise reduction processing unit and talked about on the power source supply end of noise reduction processing unit; The 3rd fixed contact is connected on the earphone cord be connected with audio interface, and the 4th fixed contact is connected on and send on words microphone input; When the slip contact is connected to the first fixed contact and the second fixed contact, power supply is for sending the words noise reduction processing unit and being talked about noise reduction processing unit and power, send the signal source of words microphone input to carry out exporting voice call clearly after noise reduction process, talked about the signal source of microphone input simultaneously and also carry out outputing on loudspeaker after noise reduction process; When the slip contact is butted on the 3rd fixed contact and the 4th fixed contact, send words microphone and audio interface to connect, send the signal of words microphone input directly to export from audio interface.
Preferably, the described words noise reduction processing unit of sending comprises the first mould/number conversion circuit, the first noise reduction compute chip and the first D/A switch circuit, and this first mould/number conversion circuit, the first noise reduction compute chip and the first D/A switch circuit are serially connected in successively and send between words microphone and audio interface.
Preferably, the described noise reduction processing unit of being talked about comprises the second mould/number conversion circuit, the second noise reduction compute chip and the second D/A switch circuit, and this second mould/number conversion circuit, the second noise reduction compute chip and the second D/A switch circuit are serially connected in successively to be talked about between microphone and loudspeaker.
Preferably, described sending talked about noise reduction processing unit and talked about noise reduction device between the language that noise reduction processing unit is the highly integrated DSP/SOC speech processor design of a utilization.
The utility model compared with prior art has obvious advantage and beneficial effect, particularly, as shown from the above technical solution, it is mainly by noise reduction module is set on common headphones, this noise reduction module comprises to be sent the words noise reduction processing unit and is talked about noise reduction processing unit, send the input signal of words microphone to divide two-way, after sending the words noise reduction processing unit, one tunnel connection receives on audio interface by earphone cord, also receive on audio interface by earphone cord after connecting diverter switch on another road, control according to diverter switch, send words microphone input signal can be by exporting after noise reduction module, also can be without just directly output of noise reduction, therefore, in the situation that environment is noisy around, the user can select noise reduction mode, and exhaust or surrounding environment is selected conversation and the audition pattern of straight-through non-noise reduction when quiet at the electric energy of power supply, novel in design, easy to use, also have, setting up on the one hand of diverter switch can be saved power supply, effectively extends the useful life of product, also can solve on the other hand the problem that in the traditional scheme, electric quantity of power supply can't be conversed after exhausting.
In addition, share same group of power supply, diverter switch and a shared earth terminal owing to sending the words noise reduction processing unit and being talked about noise reduction processing unit, thereby can realize callee and the voice signal that send the words end being carried out the function of noise reduction simultaneously.
Moreover, because noise reduction module is noise reduction device between the language of highly integrated DSP/SOC speech processor design, can be in the precision of noisy enhancement of environment voice command, keep good voice quality, realize easily talking whenever and wherever possible, be no matter in automobile, the occasions such as subway, curbside, airport, Internet bar, dining room or bar, quietly local talk or repetition dialogue just can obtain communication effect clearly not need to look for one.
For more clearly setting forth architectural feature of the present utility model and effect, below in conjunction with accompanying drawing and specific embodiment, the utility model is elaborated.
The accompanying drawing explanation
Fig. 1 is the assembling schematic perspective view of the embodiment of the utility model;
Fig. 2 is the principle of noise reduction block diagram of the embodiment of the utility model.
The accompanying drawing identifier declaration:
10, loudspeaker 11, left horn
12, right horn 20, earphone cord
30, audio interface 40, microphone
41, send words microphone 42, talked about microphone
50, noise reduction module 51, send the words noise reduction processing unit
511, the first mould/number conversion circuit 512, the first noise reduction compute chip
513, the first D/A switch circuit 52, talked about noise reduction processing unit
521, the second mould/number conversion circuit 522, the second noise reduction compute chip
523, the second D/A switch circuit 53, power supply
54, diverter switch 541, slip contact
542, the first fixed contact 543, the second fixed contact
544, the 3rd fixed contact 545, the 4th fixed contact
.
Embodiment
Please refer to shown in Fig. 1 and Fig. 2, it has demonstrated the concrete structure of the preferred embodiment of the utility model, and this noise cancelling headphone includes loudspeaker 10, earphone cord 20, audio interface 30, a plurality of microphone 40 and noise reduction module 50.
Particularly, the quantity of microphone 40 has four at least, and the microphone 40 of the present embodiment is four just, wherein two for send words microphone 41, another two for being talked about microphone 40.The quantity of described loudspeaker 10 has two, is respectively left horn 11 and right horn 12.
Described noise reduction module 50 is noise reduction devices between the language of the highly integrated DSP/SOC of a utilization (on-chip integration system) speech processor design, it has adopted voice environment noise resistance technology, is mainly used in the devices such as mobile phone, telephone handle, headsets and hands-free headset.Because this noise reduction module 50 is prior art, concrete principle of noise reduction is not carefully stated at this.This noise reduction module 50 comprise send words noise reduction processing unit 51, talked about noise reduction processing unit 52, power supply 53 and diverter switch 54.Aforementioned two send words microphone 41 to be connected to this send in words noise reduction processing unit 51, and send the output of words noise reduction processing unit 51 to receive on audio interface 30 by earphone cord 20.Aforementioned two are talked about microphone 42 is connected to this and is talked about in noise reduction processing unit 52, and the output of being talked about noise reduction processing unit 52 is received on loudspeaker 10 by earphone cord 20.Also have, this send words noise reduction processing unit 51, is talked about the shared same group of power supply 53 of noise reduction processing unit 52, shares diverter switch 54, and shares an earth terminal.
As shown in Figure 2, this send words noise reduction processing unit 51 to comprise the first mould/number conversion circuit 511, the first noise reduction compute chip 512 and the first D/A switch circuit 513, and this first mould/number conversion circuit 511, the first noise reduction compute chip 512 and the first D/A switch circuit 513 are connected to two in turn and send between words microphone 41 and audio interface 30.
This is talked about noise reduction processing unit 52 and is comprised the second mould/number conversion circuit 521, the second noise reduction compute chip 522 and the second D/A switch circuit 523, this second mould/number conversion circuit 521, the second noise reduction compute chip 522 and the second D/A switch circuit 523 be serially connected in successively two talked about microphone 42 and left and right loudspeaker 11,12 be connected between.
Described diverter switch 54 comprises slip contact 541, the first fixed contact 542, the second fixed contact 543, the 3rd fixed contact 544 and the 4th fixed contact 545.The output of this power supply 53 is connected on the first fixed contact 542, this second fixed contact 543 is received the power source supply end that send words noise reduction processing unit 51 and talked about noise reduction processing unit 52, is the first mould/number conversion circuit 511, the first noise reduction compute chip 512, the first D/A switch circuit 513, the second mould/number conversion circuit 521, the second noise reduction compute chip 522, the second D/A switch circuit 523 power supplies.And the 3rd fixed contact 544 is connected on the earphone cord 20 be connected with audio interface 30, the 4th fixed contact 545 is connected on and send on words microphone 41.
When slip contact 541 is connected to the first fixed contact 542 and the second fixed contact 543, this product is in noise reduction mode, power supply 53 is for sending words noise reduction processing unit 51 and being talked about noise reduction processing unit 52 power supplies, its operation principle is as follows: difference send the different simulation signal generators of words microphone 41 inputs to be converted to digital signal by the first mould/number conversion circuit 511, digital signal is sent in the first noise reduction compute chip 512 again and is processed, the signal of needs is retained, and the environmental noise around receiving is shielded, after digital signal after treatment changes into and simulates signal finally by the first D/A switch circuit 513, from audio interface 30 outputs, thereby reach the definition that promotes voice call.With with simultaneously, the different simulation signal generators that difference is talked about microphone 42 input are converted to digital signal, digital signal by the second mould/number conversion circuit 521 and are sent in the second noise reduction compute chip 522 again and are processed, the signal of needs is retained, and the environmental noise around receiving is shielded, after digital signal after treatment changes into and simulates signal finally by the second D/A switch circuit 523, output on left and right loudspeaker 11,12, thereby reach the definition that promotes voice call.
When slip contact 541 is butted on the 3rd fixed contact 544 and the 4th fixed contact 545, conversation and audition pattern in straight-through non-noise reduction, now send the path between 41 inputs of words microphone and audio interface 30 directly to connect, thereby send the signal of words microphone 41 inputs without noise reduction process, but directly from audio interface 30 outputs.This situation is applicable to when power supply 53 electric weight exhaust or the quiet use when noisy of surrounding environment.
By experimental results demonstrate, utilize noise cancelling headphone of the present utility model, can reach the noise reduction of 35～40dB.
In sum, design focal point of the present utility model is, it is mainly by noise reduction module 50 is set on common headphones, this noise reduction module 50 comprises to be sent words noise reduction processing unit 51 and is talked about noise reduction processing unit 52, send the input signal of words microphone 41 to divide two-way, after sending words noise reduction processing unit 51, one tunnel connection receives on audio interface 30 by earphone cord 20, also receive on audio interface 30 by earphone cord 20 after connecting diverter switch 54 on another road, control according to diverter switch 54, send the input signal of words microphone 41 can pass through the rear output of noise reduction module 50, also can be without just directly output of noise reduction, therefore, in the situation that environment is noisy around, the user can select noise reduction mode, and exhaust or surrounding environment is selected conversation and the audition pattern of straight-through non-noise reduction when quiet at the electric energy of power supply 53, novel in design, easy to use.Also have, setting up on the one hand of diverter switch 54 can be saved power supply, effectively extends the useful life of product, also can solve on the other hand the problem that in the traditional scheme, electric quantity of power supply can't be conversed after exhausting.
In addition, share same group of power supply 53, diverter switch 54 and a shared earth terminal owing to sending words noise reduction processing unit 51 and being talked about noise reduction processing unit 52, thereby can realize callee and the voice signal that send the words end being carried out the function of noise reduction simultaneously.
Moreover, because noise reduction module 50 is noise reduction devices between the language of highly integrated DSP/SOC speech processor design, can be in the precision of noisy enhancement of environment voice command, keep good voice quality, realize easily talking whenever and wherever possible, be no matter in automobile, the occasions such as subway, curbside, airport, Internet bar, dining room or bar, quietly local talk or repetition dialogue just can obtain communication effect clearly not need to look for one.
The above, it is only preferred embodiment of the present utility model, not technical scope of the present utility model is imposed any restrictions, therefore any trickle modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment, all still belong in the scope of technical solutions of the utility model.
Claims (6)
1. a noise cancelling headphone, include loudspeaker, earphone cord, audio interface, noise reduction module and several microphones, described microphone comprises that at least two are sent words microphone and at least two to be talked about microphone, it is characterized in that: described noise reduction module comprises send the words noise reduction processing unit, talked about noise reduction processing unit, power supply and diverter switch, the aforementioned input signal of words microphone that send divides two-way, after sending the words noise reduction processing unit, one tunnel connection receives on audio interface by earphone cord, also receive on audio interface by earphone cord after connecting diverter switch by wire on another road, and the output of being talked about noise reduction processing unit is received on loudspeaker by earphone cord, by diverter switch, with control, send the signal of words microphone input directly export or export through noise reduction.
2. noise cancelling headphone according to claim 1 is characterized in that: the described noise reduction processing unit of being talked about shares same group of power supply, diverter switch and shares an earth terminal with sending the words noise reduction processing unit.
3. noise cancelling headphone according to claim 2, it is characterized in that: described diverter switch comprises a slip contact and the first fixed contact, the second fixed contact, the 3rd fixed contact, the 4th fixed contact, this power output end is connected on the first fixed contact, and this second fixed contact is received and sent the words noise reduction processing unit and talked about on the power source supply end of noise reduction processing unit; The 3rd fixed contact is connected on the earphone cord be connected with audio interface, and the 4th fixed contact is connected on and send on words microphone input; When the slip contact is connected to the first fixed contact and the second fixed contact, power supply is for sending the words noise reduction processing unit and being talked about noise reduction processing unit and power, send the signal source of words microphone input to carry out exporting voice call clearly after noise reduction process, talked about the signal source of microphone input simultaneously and also carry out outputing on loudspeaker after noise reduction process; When the slip contact is butted on the 3rd fixed contact and the 4th fixed contact, send words microphone and audio interface to connect, send the signal of words microphone input directly to export from audio interface.
4. noise cancelling headphone according to claim 1, it is characterized in that: the described words noise reduction processing unit of sending comprises the first mould/number conversion circuit, the first noise reduction compute chip and the first D/A switch circuit, and this first mould/number conversion circuit, the first noise reduction compute chip and the first D/A switch circuit are serially connected in successively and send between words microphone and audio interface.
5. noise cancelling headphone according to claim 4, it is characterized in that: the described noise reduction processing unit of being talked about comprises the second mould/number conversion circuit, the second noise reduction compute chip and the second D/A switch circuit, and this second mould/number conversion circuit, the second noise reduction compute chip and the second D/A switch circuit are serially connected in successively to be talked about between microphone and loudspeaker.
6. noise cancelling headphone according to claim 5 is characterized in that: the described words noise reduction processing unit of sending is noise reduction device between the language that designs of the highly integrated DSP/SOC speech processor of a utilization with talking about noise reduction processing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220432719.9U CN202818556U (en) | 2012-08-29 | 2012-08-29 | Noise reduction earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220432719.9U CN202818556U (en) | 2012-08-29 | 2012-08-29 | Noise reduction earphone |
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| Publication Number | Publication Date |
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| CN202818556U true CN202818556U (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201220432719.9U Expired - Lifetime CN202818556U (en) | 2012-08-29 | 2012-08-29 | Noise reduction earphone |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015096440A1 (en) * | 2013-12-24 | 2015-07-02 | 中兴通讯股份有限公司 | Microphone apparatus and earphone |
| CN106101898A (en) * | 2016-07-18 | 2016-11-09 | 歌尔股份有限公司 | Noise cancelling headphone and noise-reduction method thereof |
| CN106792347A (en) * | 2016-11-30 | 2017-05-31 | 江西洪都航空工业集团有限责任公司 | A kind of electromagnetic type send ﹑ impedances of receiver and sensitivity ganged circuit |
| CN110198501A (en) * | 2018-02-27 | 2019-09-03 | 奥维通信股份有限公司 | A kind of multifunctional headphone system |
-
2012
- 2012-08-29 CN CN201220432719.9U patent/CN202818556U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015096440A1 (en) * | 2013-12-24 | 2015-07-02 | 中兴通讯股份有限公司 | Microphone apparatus and earphone |
| CN106101898A (en) * | 2016-07-18 | 2016-11-09 | 歌尔股份有限公司 | Noise cancelling headphone and noise-reduction method thereof |
| CN106101898B (en) * | 2016-07-18 | 2019-04-23 | 歌尔股份有限公司 | Noise cancelling headphone and its noise-reduction method |
| CN106792347A (en) * | 2016-11-30 | 2017-05-31 | 江西洪都航空工业集团有限责任公司 | A kind of electromagnetic type send ﹑ impedances of receiver and sensitivity ganged circuit |
| CN110198501A (en) * | 2018-02-27 | 2019-09-03 | 奥维通信股份有限公司 | A kind of multifunctional headphone system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Apparatus and method of reducing noise of earphones, noise reducing earphones, and a portable audio reproducing apparatus Effective date of registration: 20180118 Granted publication date: 20130320 Pledgee: Kingston Technology Corp. Pledgor: DONGGUAN TRANSOUND ELECTRONICS Co.,Ltd. Registration number: 2018990000059 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20201224 Granted publication date: 20130320 Pledgee: Kingston Technology Corp. Pledgor: DONGGUAN TRANSOUND ELECTRONICS Co.,Ltd. Registration number: 2018990000059 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130320 |
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| CX01 | Expiry of patent term |