CN208015952U - Electromechanical integration acoustic-electric shields earmuff - Google Patents
Electromechanical integration acoustic-electric shields earmuff Download PDFInfo
- Publication number
- CN208015952U CN208015952U CN201820440589.0U CN201820440589U CN208015952U CN 208015952 U CN208015952 U CN 208015952U CN 201820440589 U CN201820440589 U CN 201820440589U CN 208015952 U CN208015952 U CN 208015952U
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- China
- Prior art keywords
- cover body
- material layer
- earmuff
- sound
- noise reduction
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Abstract
The utility model discloses electromechanical integration acoustic-electrics to shield earmuff, including cover body, holder and active noise reduction system, the cover body are set as two and are connected to the both ends of holder, and the active noise reduction system is installed in cover body.By using multiple sound insulation composite construction cover body as passive noise reduction, Double-noise-reduction system is formed in conjunction with active noise reduction system.Solves the deficiency of cover aural headphone, simultaneously without building soundproof room, so that hearing test can smoothly be carried out in each clinic and community hospital, even can also it be carried out in public places such as park, supermarket, campuses, more crowds are facilitated to detect the hearing state of itself whenever and wherever possible, precautionary measures are carried out, the generation and development of deafness and tinnitus disease are effectively reduced.
Description
Technical field
The utility model is related to a kind of audiometry ear shield device, more particularly to a kind of electromechanical integration acoustic-electric shields earmuff.
Background technology
Hearing test is widely used in the diagnosis and treatment of otology, to be carried out hearing test project and be needed to be equipped with some facilities, example
Such as audiometry instrument and soundproof room.Audio tester is current most popular hearing device, and provisioned earphone is just frequently used
Checked etc. in hearing tests project in pure tone test, tinnitus, common cover aural headphone compared with general Earphone, although
The problem of comfortable wearing will not cause duct to collapse, but leakage sound, interaural attenuation be small and Occlusion effect does not solve still, as isolation
Outside noise interference just needs to build soundproof room, and the input of soundproof room needs to spend more fund, and in addition the space occupied is more,
For the more difficult satisfaction in clinic and community hospital, and with the raising of modern people's health perception, sense of hearing health care is needed to increase,
More close to people live place need to be equipped with most basic hearing test facility.
Utility model content
One side according to the present utility model, provide electromechanical integration acoustic-electric shielding earmuff, including cover body, holder and
Active noise reduction system, the cover body are set as two and are connected to the both ends of holder, the active noise reduction system and cover body
Connection.As a result, by installing active noise reduction system in cover body, sound identical with ambient noise opposite in phase, amplitude can be generated
Wave carrys out offset noise, to realize the effect of noise reduction.
In some embodiments, the cover body is multiple sound insulation composite construction.It as a result, can be effectively to noise vibration damping, suction
Sound and sound insulation are administered.
In some embodiments, the cover body includes connected sealing material layer and sound-absorbing material layer.Sealing material as a result,
Material can be sealed the space of cover body, and certain sound deadening space is formed to cover the external of human ear.Sound-absorbing material layer can be inhaled
Receive the noise being passed in external environment in cover body.
In some embodiments, the cover body further includes insulation material layer, and the absorbing material layer is connected to sound absorber
The side of the side of the bed of material, the insulation material layer is connected to the other side of sound-absorbing material layer.Insulation material layer can be into as a result,
The noise of external environment is isolated in one step.
In some embodiments, the cover body further includes absorbing material layer, and the absorbing material layer is connected to sound insulation material
The other side of the bed of material.Absorbing material layer can have high absorptivity in broad frequency band to electromagnetic wave as a result, to absorb projection
To the electromagnetic wave energy on its surface.
In some embodiments, the active noise reduction system includes sequentially connected voice collection device, analog/digital conversion
Device, DSP digital signal processor, D/A converter and sound output device.
In some embodiments, voice collection device includes microphone and the first amplifier, the output of the microphone
End is connect with the input terminal of the first amplifier, and the input of the output end and A/D converter of first amplifier connects.
In some embodiments, the sound output device includes the second amplifier and loud speaker, second amplification
The input terminal of device and the output end of D/A converter connect, and the output end of second amplifier is connect with loud speaker.
The utility model has the beneficial effects that：By using multiple sound insulation composite construction cover body as passive noise reduction, in conjunction with
Active noise reduction system forms Double-noise-reduction system.Solves the deficiency of cover aural headphone, while without building soundproof room so that listen
Power inspection can smoothly be carried out in each clinic and community hospital, even can also be carried out in public places such as park, supermarket, campuses,
Facilitate more crowds to detect the hearing state of itself whenever and wherever possible, carry out precautionary measures, effectively reduces the hair of deafness and tinnitus disease
Raw and development.
Description of the drawings
Fig. 1 is that the electromechanical integration acoustic-electric of one embodiment of the utility model shields the structural schematic diagram of earmuff；
Fig. 2 is the system construction drawing for the active noise reduction system that electromechanical integration acoustic-electric shields earmuff shown in Fig. 1.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 and Fig. 2 schematically shows a kind of electromechanical integration acoustic-electric screen of embodiment according to the present utility model
Cover earmuff.
Referring to Figures 1 and 2, electromechanical integration acoustic-electric shielding earmuff includes cover body 1, holder 2 and active noise reduction system 3.Cover
Body 1 is in semicircular arc, can cover the outer rim of human ear and form an airtight chamber between ear and cover body 1, can simulate
The effect of soundproof room.Cover body 1 is set as two and is connected to the both ends of holder 2, two ears of people can be covered, to two
Ear carries out sound insulation or plays sound respectively.Active noise reduction system 3 is connect with cover body 1.
Cover body 1 is multiple sound insulation composite construction.Cover body 1 includes sealing material layer 11, sound-absorbing material layer 12, insulation material layer
13 and absorbing material layer 14.Sealing material layer 11, sound-absorbing material layer 12, insulation material layer 13 and absorbing material layer 14 are from inside to outside
It sets gradually.
Sealing material layer 11 is connected to the side of sound-absorbing material layer 12, and the side of insulation material layer 13 is connected to sound-absorbing material
The other side of layer 12.Absorbing material layer 14 is connected to the other side of insulation material layer 13.Silica gel etc. can be used in sealing material layer 11
Material makes, and can be formed and be sealed in 1 inner wall of cover body.The making of the materials such as acoustical cotton can be used in insulation material layer 13, can absorb external
The noise that environment generates.The making of high density sound-insulation metal can be used in insulation material layer 13, can completely cut off the noise of external environment.Inhale wave
Material layer 14 is located at the outermost layer of cover body 1, can absorb or substantially weaken the electromagnetic wave energy for projecting its surface.
Active noise reduction system 3 include voice collection device 31, A/D converter 32, DSP digital signal processor 33, number/
Mode converter 34 and sound output device 35.
Voice collection device 31 includes microphone 311 and the first amplifier 312.The output end of microphone 311 is put with first
The input terminal connection of big device 312, the output end of the first amplifier 312 are connect with the input of A/D converter 32.
Sound output device 35 includes the second amplifier 351 and loud speaker 352, and the input terminal of the second amplifier 351 and number/
The output end of mode converter 34 connects, and the output end of the second amplifier 351 is connect with loud speaker 352.
Microphone 311 amplifies noise signal through the first amplifier 312, then for collecting environmental noise by analog/digital conversion
Device 32 is converted to digital signal and is input in DSP digital signal processor 33.DSP is Digital Signal Process, i.e.,
Digital Signal Processing.The analysis of DSP digital signal processor 33 calculates noise, then is generated by DSP digital signal processor 33
Digital signal that treated sends the second amplifier 351 to after D/A converter 34 is converted to analog signal, is put by second
The big amplification of device 351 and drive the speaker 352 generate sound wave identical as environmental noise amplitude and opposite in phase and eliminate environmental noise.
The electromechanical integration acoustic-electric shielding earmuff of the utility model further includes voice input device 4, voice input device 4
Output end is connect with the input terminal of loud speaker 352, audio can be conveyed into cover body 1 and played out.
Above-described is only some embodiments of the utility model.For those of ordinary skill in the art,
Without departing from the concept of the present invention, various modifications and improvements can be made, these belong to this practicality
Novel protection domain.
Claims (5)
1. electromechanical integration acoustic-electric shields earmuff, it is characterised in that：Including cover body (1), holder (2) and active noise reduction system (3),
The cover body (1) is set as two and is connected to the both ends of holder (2), and the active noise reduction system (3) connects with cover body (1)
It connects, the active noise reduction system (3) includes sequentially connected voice collection device (31), A/D converter (32), DSP numbers
Signal processor (33), D/A converter (34) and sound output device (35), the voice collection device (31) includes Mike
Wind (311) and the first amplifier (312), the output end of the microphone (311) and the input terminal of the first amplifier (312) connect
It connects, the output end of first amplifier (312) is connect with the input of A/D converter (32), the sound output device
(35) include the second amplifier (351) and loud speaker (352), the input terminal and D/A converter of second amplifier (351)
(34) output end connection, the output end of second amplifier (351) are connect with loud speaker (352).
2. electromechanical integration acoustic-electric according to claim 1 shields earmuff, it is characterised in that：The cover body (1) is multilayer
Sound insulation composite construction.
3. electromechanical integration acoustic-electric according to claim 2 shields earmuff, it is characterised in that：The cover body (1) includes phase
Sealing material layer (11) even and sound-absorbing material layer (12).
4. electromechanical integration acoustic-electric according to claim 3 shields earmuff, it is characterised in that：The cover body (1) further includes
Insulation material layer (13), the sealing material layer (11) are connected to the side of sound-absorbing material layer (12), the insulation material layer
(13) side is connected to the other side of sound-absorbing material layer (12).
5. electromechanical integration acoustic-electric according to claim 3 shields earmuff, it is characterised in that：The cover body (1) further includes
Absorbing material layer (14), the absorbing material layer (14) are connected to the other side of insulation material layer (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820440589.0U CN208015952U (en) | 2018-03-29 | 2018-03-29 | Electromechanical integration acoustic-electric shields earmuff |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820440589.0U CN208015952U (en) | 2018-03-29 | 2018-03-29 | Electromechanical integration acoustic-electric shields earmuff |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208015952U true CN208015952U (en) | 2018-10-26 |
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ID=63891361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820440589.0U Active CN208015952U (en) | 2018-03-29 | 2018-03-29 | Electromechanical integration acoustic-electric shields earmuff |
Country Status (1)
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| CN (1) | CN208015952U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113891210A (en) * | 2021-09-30 | 2022-01-04 | 博罗县全成电子有限公司 | Magnetizing field suppression passive wireless earphone and production process thereof |
-
2018
- 2018-03-29 CN CN201820440589.0U patent/CN208015952U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113891210A (en) * | 2021-09-30 | 2022-01-04 | 博罗县全成电子有限公司 | Magnetizing field suppression passive wireless earphone and production process thereof |
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