CN205081925U - Noise reduction earphone - Google Patents
Noise reduction earphone Download PDFInfo
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- CN205081925U CN205081925U CN201520739226.3U CN201520739226U CN205081925U CN 205081925 U CN205081925 U CN 205081925U CN 201520739226 U CN201520739226 U CN 201520739226U CN 205081925 U CN205081925 U CN 205081925U
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- microphone
- loudspeaker
- noise
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- cancelling headphone
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Abstract
The utility model relates to a field of earphone technique provides noise reduction earphone, including having inner chamber and one side open -ended casing, the casing is formed with pleasant structure, and the sound hole has been seted up out to pleasant structure, is equipped with loudspeaker in the inner chamber, and loudspeaker are close to open -ended one side and are equipped with first microphone, and one side that loudspeaker are close to the sound hole is equipped with the second microphone, and the casing is connected with the control box. Above -mentioned noise reduction earphone picks up a noise signal of opening part through first microphone, two noise signal of sound hole department is picked up out through the second microphone, and carry a noise signal and the 2nd noise signal for the control box, the control box can produce the equal nevertheless opposite first signal of making an uproar that falls of polarity of range with a noise signal, and production and the 2nd noise signal's range equals that nevertheless the signal of making an uproar falls in the opposite second of polarity, with the first signal of making an uproar that falls, make an uproar signal and audio input signal mixture fall in the second, carry and give loudspeaker, messenger's loudspeaker sound production. Like this, through dual noise reduction for the noise reduction earphone the noise reduction effect ideal.
Description
Technical field
The utility model belongs to the field of ear phone technology, particularly relates to noise cancelling headphone.
Background technology
Along with the progress of society and the raising of people's living standard, earphone has become must obligato daily necessities in people's life.People usually listen to the music in street or the first-class environment of bus, and usually can produce noise in this kind of environment, the music of these noises and the headphone reproduction people's ear that enters mixed in together, affect the hearing enjoying of user.Therefore, noise cancelling headphone arises at the historic moment.
At present, noise cancelling headphone on the market generally comprises housing, is provided with loudspeaker, microphone and noise canceller circuit in housing.It is by the noise signal of microphone pickup external environment condition, again noise signal is flowed to noise canceller circuit, noise canceller circuit produces and signal equal but contrary in polarity on noise signal amplitude, and is mixed with audio input signal by gained signal, flow to loudspeaker, make sound horn.But adopt the existing noise cancelling headphone of said structure, its noise reduction is still undesirable.
Utility model content
The purpose of this utility model is to provide noise cancelling headphone, is intended to solve the not good problem of existing noise cancelling headphone noise reduction.
For solving the problems of the technologies described above, the utility model provides noise cancelling headphone, comprise and there is inner chamber and the housing of a side opening, described housing is formed into ear structure, described enter ear structure offer the sender communicated with described inner chamber, loudspeaker are provided with in described inner chamber, described loudspeaker are provided with the first microphone near the side of described opening, described loudspeaker are provided with second microphone near the side of described sender, the described housing ambient noise signal be connected with for described first microphone and described second microphone being picked up carries out noise reduction process and flows to the control box of described loudspeaker.
Further, what described sender was located at described loudspeaker goes out on front side of sound, and what described opening was located at described loudspeaker goes out sound dorsal part.
Further, described control box comprises box body, is provided with circuit board in described box body, and described circuit board is electrically connected with described first microphone, described second microphone and described loudspeaker respectively.
Further, described box body comprises end box, is covered on the lid on box of the described end and is attached at the panel of described lid outer surface, and described circuit board is located in box of the described end.
Further, described opening is provided with the block for covering described inner chamber, and described first microphone is located in described block, and position relative with described first microphone on described block is provided with pore.
Further, be provided with bearing in described block, described first microphone is located on described bearing, and the position that described bearing is relative with described first microphone offers venthole.
Further, described bearing is formed with groove, described first microphone is located in described groove, and described venthole is opened in described bottom portion of groove.
Further, dust layer is provided with between described first microphone and described pore.
Further, entering ear structure described in is cylindrical projection.
Further, described projection is arranged with the ear muff for facilitating people's ear to wear.
The beneficial effect of the noise cancelling headphone that the utility model provides:
Because above-mentioned noise cancelling headphone adopts the first microphone and second microphone, it is by first noise signal of the first microphone pickup near shell nozzle place, by second noise signal at sender place in second microphone pickup people ear, and the first noise signal and the second noise signal are flowed to control box, control box can produce equal with the amplitude of the first noise signal but opposite polarity first de-noising signal, produce but opposite polarity second de-noising signal equal with the amplitude of the second noise signal simultaneously, finally, by the first de-noising signal, second de-noising signal and audio input signal mixing, flow to loudspeaker, make sound horn.Like this, by above-mentioned Double-noise-reduction process, make above-mentioned noise cancelling headphone noise reduction desirable.
Accompanying drawing explanation
Fig. 1 is noise cancelling headphone that the utility model embodiment provides stereo decomposing explosive view when not comprising control box;
Fig. 2 is noise cancelling headphone that the utility model embodiment provides cutaway view when not comprising control box;
Fig. 3 is the perspective view of the control box of the noise cancelling headphone that the utility model embodiment provides;
Fig. 4 is the stereo decomposing explosive view of the control box of the noise cancelling headphone that the utility model embodiment provides.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in figures 1-4, be preferred embodiment that the utility model provides.
It should be noted that, when parts are called as " being fixed on " or " being arranged at " another parts, it can directly on another parts or may there are parts placed in the middle simultaneously.When parts are known as " being connected to " another parts, it can be directly connected to another parts or may there are parts placed in the middle simultaneously.
Also it should be noted that, the orientation term such as left and right, upper and lower in the present embodiment, is only relative concept or be reference with the normal operating condition of product each other, and should not be regarded as have restrictive.
As shown in Figure 1 to Figure 3, the noise cancelling headphone 10 that the present embodiment provides, comprise and there is inner chamber 111 and the housing 11 of a side opening 112, housing 11 is formed into ear structure 113, enter ear structure 113 and offer the sender 1131 communicated with inner chamber 111, loudspeaker 12 are provided with in inner chamber 111, loudspeaker 12 are provided with the first microphone 131 near the side of opening 112, loudspeaker 12 are provided with second microphone 132 near the side of sender 1131, housing 11 ambient noise signal be connected with for the first microphone 131 and second microphone 132 being picked up carries out noise reduction process and flows to the control box 14 of loudspeaker 12.
As shown in Figure 1 to Figure 3, because above-mentioned noise cancelling headphone 10 adopts the first microphone 131 and second microphone 132, it picks up the first noise signal near housing 11 opening 112 place by the first microphone 131, second noise signal at sender 1131 place in people's ear is picked up by second microphone 132, and the first noise signal and the second noise signal are flowed to control box 14, control box 14 can produce equal with the amplitude of the first noise signal but opposite polarity first de-noising signal, produce but opposite polarity second de-noising signal equal with the amplitude of the second noise signal simultaneously, finally, by the first de-noising signal, second de-noising signal and audio input signal mixing, flow to loudspeaker 12, make loudspeaker 12 sounding.Like this, by above-mentioned Double-noise-reduction process, make above-mentioned noise cancelling headphone 10 noise reduction desirable.
As shown in Figure 1 to Figure 3, in order to improve noise reduction further, what sender 1131 was located at loudspeaker 12 goes out on front side of sound, and what opening 112 was located at loudspeaker 12 goes out sound dorsal part.What namely loudspeaker 12 were located at by the first microphone 131 goes out sound dorsal part, what second microphone 132 was located at loudspeaker 12 goes out on front side of sound, namely the first noise signal will go out sound dorsal part ambient noise for loudspeaker 12, second noise signal will go out ambient noise on front side of sound for loudspeaker 12, like this, going out the ambient noise signal of side before and after sound by gathering loudspeaker 12, carrying out signal feedback, so that control box 14 produces the higher de-noising signal of matching degree.
About the preferred implementation of control box 14 concrete structure, as shown in Figure 1 to Figure 3, control box 14 comprises box body 141, is provided with circuit board in box body 141, and circuit board is electrically connected with the first microphone 131, second microphone 132 and loudspeaker 12 respectively.Circuit board is provided with noise canceller circuit, so that produce the first de-noising signal and the second de-noising signal.
For the ease of the assembling of control box 14, as shown in Figure 4, box body 141 comprises end box 1411, is covered on the lid 1412 on end box 1411 and is attached at the panel 1413 of lid 1412 outer surface, and circuit board is located in end box 1411.Panel 1413 is provided with button, so that carry out control operation.
As depicted in figs. 1 and 2, come off from inner chamber 111 to prevent loudspeaker 12 and the first microphone 131, opening 112 is provided with the block 15 for covering inner chamber 111, particularly, first microphone 131 is located in block 15, in order to reduce the distortion factor of the first noise signal that the first microphone 131 picks up, on block 15, the position relative with the first microphone 131 is provided with pore 151.Like this, pore 151 communication with cavity 111 is with extraneous, the first noise signal that first microphone 131 is picked up is extraneous environmental noise signal, simultaneously, its communication with cavity 111 is with extraneous, be convenient to loudspeaker 12 vibration generation air-flow and carry out convection current, particularly, block 15 is five metals assembly parts or plastic cement assembly parts.
As depicted in figs. 1 and 2, for the ease of fixing the first microphone 131, bearing 16 is provided with in block 15, first microphone 131 is located on bearing 16, simultaneously, for the ease of vibrating the air-flow and extraneous convection current that produce due to loudspeaker 12 in inner chamber 111, the position that bearing 16 is relative with the first microphone 131 offers venthole 161.
Refinement ground, as depicted in figs. 1 and 2, in order to fix the first microphone 131 further, bearing 16 is formed with groove 162, the first microphone 131 is located in groove 162, and venthole 161 is opened in bottom groove 162.Like this, during assembling, only need the first microphone 131 to be positioned in groove 162, then be placed on loudspeaker 12, finally, cover block 15, easy for installation.
As depicted in figs. 1 and 2, in order to the dust in the external world enters block 15 from pore 151, pollute the first microphone 131, normally work to affect the first microphone 131, between the first microphone 131 and pore 151, be provided with dust layer 17.Like this, the first microphone 131 will avoid covered with dust, normally work, and ensure that the first noise signal has higher fidelity, and particularly, dust layer 17 is the layer structures such as foam.
Particularly, as depicted in figs. 1 and 2, for the ease of wearing, ear structure 113 is entered for cylindrical projection.
In order to make above-mentioned noise cancelling headphone 10 meet the design of ergonomics, human body is worn more comfortable, projection is arranged with the ear muff 18 for facilitating people's ear to wear.Ear muff 18 is the soft materials such as flexible glue.
These are only preferred embodiment of the present utility model, not in order to limit the utility model, all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (10)
1. noise cancelling headphone, it is characterized in that, comprise and there is inner chamber and the housing of a side opening, described housing is formed into ear structure, described enter ear structure offer the sender communicated with described inner chamber, loudspeaker are provided with in described inner chamber, described loudspeaker are provided with the first microphone near the side of described opening, described loudspeaker are provided with second microphone near the side of described sender, and the described housing ambient noise signal be connected with for described first microphone and described second microphone being picked up carries out noise reduction process and flows to the control box of described loudspeaker.
2. noise cancelling headphone as claimed in claim 1, is characterized in that, what described sender was located at described loudspeaker goes out on front side of sound, and what described opening was located at described loudspeaker goes out sound dorsal part.
3. noise cancelling headphone as claimed in claim 2, it is characterized in that, described control box comprises box body, is provided with circuit board in described box body, and described circuit board is electrically connected with described first microphone, described second microphone and described loudspeaker respectively.
4. noise cancelling headphone as claimed in claim 3, it is characterized in that, described box body comprises end box, is covered on the lid on box of the described end and is attached at the panel of described lid outer surface, and described circuit board is located in box of the described end.
5. noise cancelling headphone as claimed in claim 2, it is characterized in that, described opening is provided with the block for covering described inner chamber, and described first microphone is located in described block, and position relative with described first microphone on described block is provided with pore.
6. noise cancelling headphone as claimed in claim 5, it is characterized in that, be provided with bearing in described block, described first microphone is located on described bearing, and the position that described bearing is relative with described first microphone offers venthole.
7. noise cancelling headphone as claimed in claim 6, it is characterized in that, described bearing is formed with groove, described first microphone is located in described groove, and described venthole is opened in described bottom portion of groove.
8. noise cancelling headphone as claimed in claim 5, is characterized in that, be provided with dust layer between described first microphone and described pore.
9. the noise cancelling headphone as described in any one of claim 1 ~ 8, is characterized in that, described in enter ear structure be cylindrical projection.
10. noise cancelling headphone as claimed in claim 9, it is characterized in that, described projection is arranged with the ear muff for facilitating people's ear to wear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520739226.3U CN205081925U (en) | 2015-09-22 | 2015-09-22 | Noise reduction earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520739226.3U CN205081925U (en) | 2015-09-22 | 2015-09-22 | Noise reduction earphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205081925U true CN205081925U (en) | 2016-03-09 |
Family
ID=55434295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520739226.3U Active CN205081925U (en) | 2015-09-22 | 2015-09-22 | Noise reduction earphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205081925U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105979450A (en) * | 2016-06-24 | 2016-09-28 | 深圳华聆声学技术有限公司 | Integrated sound production and transmission sensor |
| CN106101898A (en) * | 2016-07-18 | 2016-11-09 | 歌尔股份有限公司 | Noise cancelling headphone and noise-reduction method thereof |
| CN111182402A (en) * | 2019-12-31 | 2020-05-19 | 歌尔科技有限公司 | Noise reduction processing method for earphone, earphone and computer readable storage medium |
| WO2020177196A1 (en) * | 2019-03-04 | 2020-09-10 | 易力声科技 (深圳) 有限公司 | Volume-monitoring headphones |
| CN112104936A (en) * | 2019-06-17 | 2020-12-18 | 深圳市三诺声智联股份有限公司 | Earphone set |
-
2015
- 2015-09-22 CN CN201520739226.3U patent/CN205081925U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105979450A (en) * | 2016-06-24 | 2016-09-28 | 深圳华聆声学技术有限公司 | Integrated sound production and transmission sensor |
| 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 |
| WO2020177196A1 (en) * | 2019-03-04 | 2020-09-10 | 易力声科技 (深圳) 有限公司 | Volume-monitoring headphones |
| CN112104936A (en) * | 2019-06-17 | 2020-12-18 | 深圳市三诺声智联股份有限公司 | Earphone set |
| CN111182402A (en) * | 2019-12-31 | 2020-05-19 | 歌尔科技有限公司 | Noise reduction processing method for earphone, earphone and computer readable storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Longgang District of Shenzhen City, Guangdong province 518116 Ping Street Takahashi Industrial Park East Area Patentee after: SHENZHE GUANXU ELECTRONIC CO., LTD. Address before: Longgang District of Shenzhen City, Guangdong province 518116 Ping Street Takahashi Industrial Park East Area Patentee before: Shenzhen Grandsun Electronic Co., Ltd. |