CN107316545A - A kind of varifocal sound focusing apparatus for demonstrating and method - Google Patents
A kind of varifocal sound focusing apparatus for demonstrating and method Download PDFInfo
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- CN107316545A CN107316545A CN201710791576.8A CN201710791576A CN107316545A CN 107316545 A CN107316545 A CN 107316545A CN 201710791576 A CN201710791576 A CN 201710791576A CN 107316545 A CN107316545 A CN 107316545A
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- reflecting surface
- inflatable chamber
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- reflecting
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/14—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for acoustics
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- Mathematical Optimization (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
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- Pure & Applied Mathematics (AREA)
- Business, Economics & Management (AREA)
- Acoustics & Sound (AREA)
- Educational Administration (AREA)
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The present invention relates to a kind of varifocal sound focusing apparatus for demonstrating and method, the device is provided with two reflecting mechanisms being oppositely arranged, reflecting mechanism is provided with inflatable chamber, reflecting surface, airway tube and control valve, one end of inflatable chamber is provided with reflecting surface, and inflatable chamber is provided with airway tube, and airway tube is provided with control valve, the reflecting surface of two reflecting mechanisms is oppositely arranged, and reflecting surface is a part for sphere, and it is elastic concave surface, the radius change of reflecting surface can be realized by the air pressure changed in inflatable chamber；The present invention realizes the radius change of reflecting surface, so that the focal length of reflecting surface changes, the focus point of sound can also changed, to be better understood from the principle of sound focusing by changing the gas pressure in inflatable chamber.
Description
Technical field
The present invention relates to acoustics teaching demonstration technical field, specifically a kind of varifocal sound focusing apparatus for demonstrating and side
Method.
Background technology
Sound is invisible to be can not touch, and people have curiosity, sound to the things that can not can be just perceived by vision or tactile
The teaching and displaying of sound are the topics that scientific circles pay close attention to always, and current acoustics instructional device is very inflexible, it is impossible to improve ginseng
The enjoyment learnt with person, is unfavorable for the absorption and understanding of audio knowledge.
The content of the invention
It is very inflexible for above-mentioned existing acoustics instructional device, it is impossible to improve the enjoyment of participant's study, be unfavorable for
The problems such as absorption and understanding of audio knowledge, the present invention provides a kind of varifocal sound focusing apparatus for demonstrating and method.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of varifocal sound focusing apparatus for demonstrating, the device is provided with two reflecting mechanisms being oppositely arranged, and reflecting mechanism, which is provided with, to be filled
Air cavity, reflecting surface, airway tube and control valve；One end of inflatable chamber is provided with reflecting surface, and inflatable chamber is provided with airway tube, airway tube
Provided with control valve, the reflecting surface of two reflecting mechanisms is oppositely arranged, and reflecting surface is a part for sphere, and is elastic concave surface,
The radius change of reflecting surface can be realized by the air pressure changed in inflatable chamber.
Described reflecting surface is made up of rubber.
Spacing between two reflectings surface is not less than 10 meters.
The radius of the reflecting surface is not less than 2 meters.
A kind of demenstration method using varifocal sound focusing apparatus for demonstrating as described above, comprises the following steps：
Step one：Control valve is opened, inflated for deflated into inflatable chamber, adjustment reflection radius surface is not less than 2 meters, closing control
Valve；
Step 2：Two participate in demonstrator and are stood respectively in face of reflecting surface, and one of demonstrator faces reflecting surface sounding, another
Individual demonstrator finds the position of other side's sound reflection focus point by the distance between adjustment and reflecting surface.
Beneficial effects of the present invention：
Varifocal sound focusing apparatus for demonstrating and method that the present invention is provided, the identical reflecting mechanism being oppositely arranged with two, demonstration
The reflection of sound wave and converging phenomenon；The present apparatus is simultaneously participated in by two demonstrators, is respectively toward to reflecting surface speech and is listened attentively to opposite
Participant speaks, and experiences the propagation of sound, and participant can understand sound focusing, understands reflection and the converging phenomenon of sound wave；This hair
It is bright to realize the radius change of reflecting surface by changing the gas pressure in inflatable chamber, so that the focal length of reflecting surface changes,
The focus point of sound can also be changed, to be better understood from the principle of sound focusing.
Brief description of the drawings
Fig. 1 schematic structural views of the invention；
Reference：1st, inflatable chamber, 2, reflecting surface, 3, airway tube, 4, control valve.
Embodiment
With reference to embodiment, the present invention is further elaborated.
As shown in the figure：A kind of varifocal sound focusing apparatus for demonstrating, the device is provided with two reflecting mechanisms being oppositely arranged, instead
Mechanism is penetrated provided with inflatable chamber 1, reflecting surface 2, airway tube 3 and control valve 4, one end of inflatable chamber 1 is provided with reflecting surface 2, inflatable chamber 1
Provided with airway tube 3, airway tube 3 is provided with control valve 4, and the reflecting surface 2 of two reflecting mechanisms is oppositely arranged, and reflecting surface 2 is ball
The part in face, and the elastic concave surface to be made up of rubber, can be by changing the air pressure in inflatable chamber 1 realizes reflecting surface 2 half
Footpath changes；The radius of the reflecting surface 2 is not less than 2 meters；Spacing between two reflectings surface 2 is not less than 10 meters.
A kind of demenstration method using varifocal sound focusing apparatus for demonstrating as described above, comprises the following steps：
Step one：Control valve is opened, inflated for deflated into inflatable chamber, adjustment reflection radius surface is not less than 2 meters, closing control
Valve；
Step 2：Two participate in demonstrator and are stood respectively in face of reflecting surface, and one of demonstrator faces reflecting surface sounding, another
Individual demonstrator finds the position of other side's sound reflection focus point by the distance between adjustment and reflecting surface.
The sound wave propagated in air is compressional wave.Describing the characteristic quantity of sound wave includes wavelength, frequency and speed.When sound wave runs into
During barrier, its propagation path and phase can be influenceed and be changed by barrier.When the size of barrier is much larger than wavelength,
Using reflection and it can reflect come the propagation law of approximate description sound wave.The frequency of people's sound of speaking is left in 500 ~ 3000Hz
The right side, its corresponding wavelength of sound is at 0.7 meter to 0.1 meter or so.Therefore, the diameter of the present apparatus（That annulus that Rubber membrane cover
Diameter）It is greater than 1.5 meters.For paraxial sound wave, its focal length is the half of spherical diameter.Therefore, most opening in experiment
During the beginning, air pressure in the reduction cavity that should try one's best, so that reduce focal length, in order to avoid it is smaller than twice of Jiao between there are two reflectings surface
Away from situation.
Claims (5)
1. a kind of varifocal sound focusing apparatus for demonstrating, it is characterised in that：The device is provided with two reflecting mechanisms being oppositely arranged, instead
Mechanism is penetrated provided with inflatable chamber（1）, reflecting surface（2）, airway tube（3）And control valve（4）；Inflatable chamber（1）One end be provided with reflecting surface
（2）, inflatable chamber（1）It is provided with airway tube（3）, airway tube（3）It is provided with control valve（4）, the reflecting surface of two reflecting mechanisms（2）
It is oppositely arranged, and reflecting surface（2）For a part for sphere, and it is elastic concave surface, can be by changing inflatable chamber（1）Interior air pressure is real
Existing reflecting surface（2）Radius change.
2. varifocal sound focusing apparatus for demonstrating as claimed in claim 1, it is characterised in that：Described reflecting surface（2）By rubber
It is made.
3. varifocal sound focusing apparatus for demonstrating as claimed in claim 1, it is characterised in that：Two reflectings surface（2）Between between
Away from not less than 10 meters.
4. varifocal sound focusing apparatus for demonstrating as claimed in claim 1, it is characterised in that：The reflecting surface（2）Radius not
Less than 2 meters.
5. a kind of demenstration method using varifocal sound focusing apparatus for demonstrating as claimed in claim 1, it is characterised in that including
Following steps：
Step one：Control valve is opened, inflated for deflated into inflatable chamber, adjustment reflection radius surface is not less than 2 meters, closing control
Valve；
Step 2：Two participate in demonstrator and are stood respectively in face of reflecting surface, and one of demonstrator faces reflecting surface sounding, another
Individual demonstrator finds the position of other side's sound reflection focus point by the distance between adjustment and reflecting surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710791576.8A CN107316545A (en) | 2017-09-05 | 2017-09-05 | A kind of varifocal sound focusing apparatus for demonstrating and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710791576.8A CN107316545A (en) | 2017-09-05 | 2017-09-05 | A kind of varifocal sound focusing apparatus for demonstrating and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107316545A true CN107316545A (en) | 2017-11-03 |
Family
ID=60176084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710791576.8A Pending CN107316545A (en) | 2017-09-05 | 2017-09-05 | A kind of varifocal sound focusing apparatus for demonstrating and method |
Country Status (1)
| Country | Link |
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| CN (1) | CN107316545A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2270334Y (en) * | 1996-10-22 | 1997-12-10 | 杨玉强 | Microphone sound wave receiving enhancing apparatus |
| CN1650471A (en) * | 2001-05-30 | 2005-08-03 | 小约翰·R·埃西格 | Inflatable multifunction parabolic reflector apparatus and methods of manufacture |
| CN2821546Y (en) * | 2005-07-11 | 2006-09-27 | 中国船舶重工集团公司第七一一研究所 | Acoustic image measurer |
| CN1886002A (en) * | 2006-07-04 | 2006-12-27 | 浙江大学 | Sound collecting and transmitting device |
| CN1926719A (en) * | 2003-12-04 | 2007-03-07 | 约翰·雷蒙德·Jr.·埃西格 | Modular inflatable multifunction field-deployable apparatus and methods of manufacture |
| CN203279174U (en) * | 2013-03-01 | 2013-11-06 | 深圳富泰宏精密工业有限公司 | Reflective sound amplifier |
| CN204104117U (en) * | 2014-10-27 | 2015-01-14 | 栾松巍 | A kind of back projection type vector oriented audio amplifier |
| CN205194164U (en) * | 2015-12-15 | 2016-04-27 | 上海锡鼎实业有限公司 | Sound focusing display device |
-
2017
- 2017-09-05 CN CN201710791576.8A patent/CN107316545A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2270334Y (en) * | 1996-10-22 | 1997-12-10 | 杨玉强 | Microphone sound wave receiving enhancing apparatus |
| CN1650471A (en) * | 2001-05-30 | 2005-08-03 | 小约翰·R·埃西格 | Inflatable multifunction parabolic reflector apparatus and methods of manufacture |
| CN1926719A (en) * | 2003-12-04 | 2007-03-07 | 约翰·雷蒙德·Jr.·埃西格 | Modular inflatable multifunction field-deployable apparatus and methods of manufacture |
| CN2821546Y (en) * | 2005-07-11 | 2006-09-27 | 中国船舶重工集团公司第七一一研究所 | Acoustic image measurer |
| CN1886002A (en) * | 2006-07-04 | 2006-12-27 | 浙江大学 | Sound collecting and transmitting device |
| CN203279174U (en) * | 2013-03-01 | 2013-11-06 | 深圳富泰宏精密工业有限公司 | Reflective sound amplifier |
| CN204104117U (en) * | 2014-10-27 | 2015-01-14 | 栾松巍 | A kind of back projection type vector oriented audio amplifier |
| CN205194164U (en) * | 2015-12-15 | 2016-04-27 | 上海锡鼎实业有限公司 | Sound focusing display device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171103 |
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| RJ01 | Rejection of invention patent application after publication |