CN106872131A - A kind of pattern analysis instrument for showing violin soundboard vibration characteristics - Google Patents
A kind of pattern analysis instrument for showing violin soundboard vibration characteristics Download PDFInfo
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- CN106872131A CN106872131A CN201710135183.1A CN201710135183A CN106872131A CN 106872131 A CN106872131 A CN 106872131A CN 201710135183 A CN201710135183 A CN 201710135183A CN 106872131 A CN106872131 A CN 106872131A
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- loudspeaker
- soundboard
- housing
- amplification circuit
- top surface
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
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- General Physics & Mathematics (AREA)
- Stringed Musical Instruments (AREA)
Abstract
Present invention is disclosed a kind of pattern analysis instrument for showing violin soundboard vibration characteristics, including housing, frequency generator, power amplification circuit are provided with the housing, the housing top surface is provided with least one loudspeaker, the signal output part of the frequency generator is connected with the signal input part of the power amplification circuit, the signal output part of the power amplification circuit is connected with the loudspeaker, to drive the loudspeaker vibration sounding；The power amplification circuit is connected with rotary switch, to adjust the power of the loudspeaker；The loudspeaker is connected with power switch, to switch the on off state of the loudspeaker；Also include some support columns, the support column is arranged in the housing top surface, soundboard is supported horizontally inside the loudspeaker top.Dedicated for building the running environment of standard vibration pattern, stringed-instrument player processed can correct soundboard shape to the present invention by contrasting figure that powder formed on soundboard and standard gramme rad Buddhist nun figure.
Description
Technical field
The present invention relates to violin making technical field, and in particular to a kind of for showing violin soundboard vibration characteristics
Pattern analysis instrument.
Background technology
Existing more than the 400 years history of violin making, it seems in structure as a combined article for wooden parts
It is very simple but extremely complex in the mode of action of acoustics.The mode of vibration of violin is the coupling between string and plate and produces
Raw panel vibration, then the vibration and sympathetic response of whole audio amplifier are excited by soundboard (including positioned at the backboard at positive panel and the back side),
So that the energy vibrated on string is expanded and is radiated in air by the vibration of plate.This process shows violin tonequality and sound
Plate intrinsic frequency in itself and its reaction to Chord vibration are closely related, and the distribution (shape) of the radian of soundboard and thickness, wood
Density and quality of material etc. determine the intrinsic frequency of soundboard.
The pronunciation of violin is not allowed with any noise, it is desirable to be clean and mellow and full musical sound.Noise be by it is many just
The synthesis of string ripple, its waveform figure line is very complicated acyclic curve, without significantly tune and pitch, is typically sounded
Make one to feel under the weather.When violin sends the musical sound of preferable grace, its vibrational waveform should be simple sine wave curve.
To ensure the quality of violin, need to carry out soundboard accordatura to correct soundboard shape before violin closes qin, pass
The violin soundboard accordatura method of system has two kinds, and one kind is to tap accordatura, i.e., tap free soundboard come fundamental excitation frequency with hand hammer, or
Person can also pull the free soundboard edge of bow friction to cause vibration；Another kind is bending accordatura, i.e., apply specific to soundboard
Stress simultaneously measures the strain of correlation, and adjusts rigidity on this basis.Above-mentioned traditional accordatura mode is main by stringed-instrument player's root processed
The sound sent according to soundboard judges to be modified by rule of thumb, lacks intuitively criterion.
More advanced is to carry out accordatura by the pattern analysis to soundboard vibration characteristics, and violin soundboard is vibrated below
The pattern analysis of characteristic is illustrated.
A piece common square wood strip long, takes at 2 points from every one end at 1/5th of its length, the two points east
West props up, and taps center, it is possible to which the pattern to its vibration characteristics is analyzed.The two points are called node, it is substantially stationary not
Vibration, and the centre of batten and two ends are vibrating, this oscillating component is just called antinode.If batten has enough length, so that it may
Other vibration modes to batten by way of the mobile strong point and percussion position are analyzed.The frequency of these vibration modes
Rate, changes with the change of batten thickness；If length, width and material are all, then batten is thinner, and frequency is lower.No
Cross, the soundboard of violin arcuate structure, much more complicated than batten of the pattern analysis of its vibration characteristics.
The pattern analysis method of initial violin soundboard vibration characteristics：Some points of violin soundboard are supported with sponge,
Make its level, fine powder is sprinkled in plate, soundboard edge is drawn with bow (existing vibrator), when violin soundboard resonates, powder
Non-vibrating node position is collected on, the vibration that the figure that can be just formed by powder in this way is presented soundboard is special
Property, so as to carry out pattern analysis.This technology is proposed by Ernest ＆ Whitney gramme rad Buddhist nun (Ernst Chladni), and funds profit
Gram this Savall (Felix Savart) et al. used prior art in early stage is studied.
Up to the present, stringed-instrument player processed is had been able to by contrasting figure that powder formed on soundboard and as shown in Figure 1
The standard gramme rad Buddhist nun figure that powder is formed under standard vibration pattern corrects soundboard shape, and then creates with good performance
The outstanding violin of quality, pronunciation.
Standard vibration pattern and soundboard position of the fulcrum, vibrator act on the position of soundboard, frequency dependence, with left in Fig. 1
As a example by the pattern I (one kind in standard vibration pattern) of upper edged surface plate, pattern I central bearing points (black round dot) are 4, are located at respectively
Panel length direction two edges and the middle part of width two edges, vibrator is located at lower right corner anti-node location, and (gray scale is filled
Border circular areas), vibrator acts on the frequency of soundboard for 87HZ, the outstanding violin soundboard of quality presented under pattern I gram
The gramme rad Buddhist nun figure (lozenge diagram extended between each fulcrum) that rad Buddhist nun's figure is just near the mark.Do not carry in the prior art
For the equipment dedicated for building standard vibration mode operation environment, be there may be when standard vibration mode operation environment is built
Larger error (especially vibrator acts on the frequency of soundboard it is difficult to control), directly influences the follow-up judgement of stringed-instrument player processed.
The content of the invention
It is an object of the invention to provide a kind of pattern analysis instrument for showing violin soundboard vibration characteristics.
For achieving the above object, the present invention is adopted the following technical scheme that：
A kind of pattern analysis instrument for showing violin soundboard vibration characteristics, including housing, are provided with frequency in the housing
Rate generator, power amplification circuit, the housing top surface are provided with least one loudspeaker, the signal output of the frequency generator
End is connected with the signal input part of the power amplification circuit, the signal output part of the power amplification circuit and the loudspeaker
Connection, to drive the loudspeaker vibration sounding；
The power amplification circuit is connected with rotary switch, to adjust the power of the loudspeaker；
The loudspeaker is connected with power switch, to switch the on off state of the loudspeaker；
Also include some support columns, the support column is arranged in the housing top surface, and soundboard is supported horizontally inside into institute
State loudspeaker top.
Used as further improved technical scheme of the present invention, the top surface of the housing is made by iron or ferroalloy materials；
The support column includes base, and the base is made up of magnet, positioned at the support column bottom, for the shell
The top surface of body coordinates；
Foam-rubber cushion, positioned at support column top, for coordinating with soundboard；
Connecting rod, between the base and the foam-rubber cushion, the foam-rubber cushion is fixed with described connecting rod one end and connected
Connect, the base is fixedly connected with the other end of the connecting rod.
Used as further improved technical scheme of the present invention, the top surface of the housing is provided with positioning boost line.
Used as further improved technical scheme of the present invention, the loudspeaker is 3.
Relative to prior art, the technical effects of the invention are that：
Running environment dedicated for building standard vibration pattern of the invention, stringed-instrument player processed can be by contrasting powder in soundboard
The figure and standard gramme rad Buddhist nun figure of upper formation corrects soundboard shape.
Brief description of the drawings
Fig. 1 is the standard gramme rad Buddhist nun's figure formed respectively under three kinds of existing standard vibration modes；
Fig. 2 is a kind of structure for showing the pattern analysis instrument of violin soundboard vibration characteristics in embodiment of the present invention
Schematic diagram；
Fig. 3 is the gramme rad Buddhist nun's figure formed under the standard vibration pattern using simulation drawing of the present invention 1.
Specific embodiment
Below with reference to specific embodiment shown in the drawings, the present invention will be described in detail.But these implementation methods are simultaneously
The present invention is not limited, structure that one of ordinary skill in the art is made according to these implementation methods, method or functionally
Conversion is all contained in protection scope of the present invention.
One embodiment of the present invention presented below：
Refer to Fig. 2, a kind of pattern analysis instrument for showing violin soundboard vibration characteristics, including housing 1, the shell
Frequency generator 2, power amplification circuit (not shown) is provided with body 1, the top surface of the housing 1 is provided with least one loudspeaker 3, institute
The signal output part for stating frequency generator 2 is connected with the signal input part of the power amplification circuit, the power amplification circuit
Signal output part be connected with the loudspeaker 3, to drive the vibration sounding of the loudspeaker 3；
The power amplification circuit is connected with rotary switch 4, to adjust the power of the loudspeaker 3；
The loudspeaker 3 is connected with power switch 5, to switch the on off state of the loudspeaker 3；
Also include some support columns 6, the support column 6 is arranged on the top surface of the housing 1, by the horizontal support of soundboard 8
In the top of the loudspeaker 3.
In the present embodiment, frequency generator 2 produces sine wave signal as the signal source of loudspeaker 3, sine wave
The frequency of signal can be set according to the frequency of the standard vibration pattern of required simulation.
Power amplification circuit also coordinates the work(of regulation loudspeaker 3 in addition to for drive the speaker 3 with rotary switch 4
Rate.Soundboard 8 produces correspondence gramme rad Buddhist nun's figure under a certain frequency, and power if desired is smaller, illustrates that soundboard 8 is easier
Responded under this frequency.
It is advantageous in that as vibrator using loudspeaker 3, loudspeaker 3 is propagated by air dielectric and triggers soundboard 8 to resonate,
Mechanical is connected between soundboard 8, and analysis result can be made more accurate.
Further, the top surface of the housing 1 is made by iron or ferroalloy materials；
The support column 6 includes base, and the base is made up of magnet, positioned at the bottom of the support column 6, for it is described
The top surface of housing 1 coordinates；
Foam-rubber cushion, positioned at the top of the support column 6, for coordinating with soundboard 8；
Connecting rod, between the base and the foam-rubber cushion, the foam-rubber cushion is fixed with described connecting rod one end and connected
Connect, the base is fixedly connected with the other end of the connecting rod.
When being analyzed test, adsorbed by base and the top surface of housing 1, the position of fixed support column 6, can be with when changing pattern
Support column 6 is picked up into movement, the position of the fulcrum of conversion support soundboard 8.
Further, the top surface of the housing 1 is provided with positioning boost line 7.Positioning boost line 7 is cross hairs, cross hairs
Intersection identify the position of each standard vibration pattern lower fulcrum, to facilitate support column 6 to position.
Further, the loudspeaker 3 is 3 in the present embodiment.3 positions of loudspeaker 3 correspond to existing mark
The position of vibrator in quasi- vibration mode (pattern I, pattern II and pattern V).Accordingly, power switch 5 is also configured as 3, point
3 on off states of loudspeaker 3 Yong Yu not controlled.
When the present invention is used, at support column 6 is moved under respective standard vibration mode position of the fulcrum first, then by sound
Plate 8 is placed on support column 6, toward soundboard 8 on sprinkle fine powder (preferably tea dust), open frequency generator 2, setting frequency
The output frequency of rate generator 2 is the corresponding frequencies numerical value under the standard vibration pattern, then opens relevant position loudspeaker 3
Power switch 5, the watt level of loudspeaker 3 is adjusted using rotary switch 4, and the sound wave that loudspeaker 3 sends is under air dielectric conduction
Soundboard 8 is acted on, soundboard 8 is resonated, now fine powder can form metastable gramme rad Buddhist nun figure (such as on soundboard 8
Shown in Fig. 3), contrast standard gramme rad Buddhist nun's figure, stringed-instrument player processed can be according to comparing result, and the shape to soundboard 8 is modified, repaiies
After just again by soundboard 8 be positioned on support column 6 test, this process is repeated, until on soundboard 8 fine powder formed gram
Rad Buddhist nun figure is approached with standard gramme rad Buddhist nun figure.
In general, in pattern I, pattern II and in pattern V, fine powder can be formed close to standard gramme rad Buddhist nun figure
The soundboard 8 of shape, better quality, on the contrary then need to be modified.
Relative to prior art, the technical effects of the invention are that：
Running environment dedicated for building standard vibration pattern of the invention, stringed-instrument player processed can be by contrasting powder in soundboard
The figure and standard gramme rad Buddhist nun figure formed on 8 correct the shape of soundboard 8.
Finally it should be noted that：Embodiment of above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
Pipe has been described in detail with reference to aforementioned embodiments to the present invention, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing each implementation method can so be modified, or which part technical characteristic is equal to
Replace；And these modifications or replacement, the essence of appropriate technical solution is departed from each implementation method technical scheme of the invention
Spirit and scope.
Claims (4)
1. a kind of pattern analysis instrument for showing violin soundboard vibration characteristics, it is characterised in that including housing, the housing
In be provided with frequency generator, power amplification circuit, the housing top surface is provided with least one loudspeaker, the frequency generator
Signal output part is connected with the signal input part of the power amplification circuit, the signal output part of the power amplification circuit and institute
Loudspeaker connection is stated, to drive the loudspeaker vibration sounding；
The power amplification circuit is connected with rotary switch, to adjust the power of the loudspeaker；
The loudspeaker is connected with power switch, to switch the on off state of the loudspeaker；
Also include some support columns, the support column is arranged in the housing top surface, soundboard is supported horizontally inside described raising
Sound device top.
2. a kind of pattern analysis instrument for showing violin soundboard vibration characteristics according to claim 1, its feature exists
In the top surface of the housing is made by iron or ferroalloy materials；
The support column includes base, and the base is made up of magnet, positioned at the support column bottom, for the housing
Top surface coordinates；
Foam-rubber cushion, positioned at support column top, for coordinating with soundboard；
Connecting rod, between the base and the foam-rubber cushion, the foam-rubber cushion is fixedly connected with described connecting rod one end, institute
Base is stated to be fixedly connected with the other end of the connecting rod.
3. a kind of pattern analysis instrument for showing violin soundboard vibration characteristics according to claim 1, its feature exists
In the top surface of the housing is provided with positioning boost line.
4. a kind of pattern analysis instrument for showing violin soundboard vibration characteristics according to claim 1, its feature exists
In the loudspeaker is 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710135183.1A CN106872131A (en) | 2017-03-08 | 2017-03-08 | A kind of pattern analysis instrument for showing violin soundboard vibration characteristics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710135183.1A CN106872131A (en) | 2017-03-08 | 2017-03-08 | A kind of pattern analysis instrument for showing violin soundboard vibration characteristics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106872131A true CN106872131A (en) | 2017-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710135183.1A Pending CN106872131A (en) | 2017-03-08 | 2017-03-08 | A kind of pattern analysis instrument for showing violin soundboard vibration characteristics |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443513A (en) * | 2018-10-18 | 2019-03-08 | 湖南城市学院 | A kind of violin bridge vibration detecting system |
Citations (6)
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|---|---|---|---|---|
| EP0288062B1 (en) * | 1987-04-22 | 1993-01-07 | Yamaha Corporation | Electronic musical instrument |
| CN2847246Y (en) * | 2005-10-28 | 2006-12-13 | 中国海洋大学 | Muscial instrument audio frequency characteristic resonance meter |
| CN101873111A (en) * | 2009-04-21 | 2010-10-27 | 上海鸿晔电子科技有限公司 | Oscillation frequency generator |
| CN102435297A (en) * | 2011-10-28 | 2012-05-02 | 上海应用技术学院 | Device for testing oscillation frequency of string of piano |
| CN102903353A (en) * | 2012-10-31 | 2013-01-30 | 河北金音乐器集团有限公司 | Method and device for detecting and debugging violin panel |
| CN204066699U (en) * | 2014-09-11 | 2014-12-31 | 陆俊豪 | Violin soundboard shaking table |
-
2017
- 2017-03-08 CN CN201710135183.1A patent/CN106872131A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0288062B1 (en) * | 1987-04-22 | 1993-01-07 | Yamaha Corporation | Electronic musical instrument |
| CN2847246Y (en) * | 2005-10-28 | 2006-12-13 | 中国海洋大学 | Muscial instrument audio frequency characteristic resonance meter |
| CN101873111A (en) * | 2009-04-21 | 2010-10-27 | 上海鸿晔电子科技有限公司 | Oscillation frequency generator |
| CN102435297A (en) * | 2011-10-28 | 2012-05-02 | 上海应用技术学院 | Device for testing oscillation frequency of string of piano |
| CN102903353A (en) * | 2012-10-31 | 2013-01-30 | 河北金音乐器集团有限公司 | Method and device for detecting and debugging violin panel |
| CN204066699U (en) * | 2014-09-11 | 2014-12-31 | 陆俊豪 | Violin soundboard shaking table |
Non-Patent Citations (1)
| Title |
|---|
| 张爱林等: "小提琴自由琴板振型分析系统及音柱对振型影响的实验研究（上）", 《乐器》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443513A (en) * | 2018-10-18 | 2019-03-08 | 湖南城市学院 | A kind of violin bridge vibration detecting system |
| CN109443513B (en) * | 2018-10-18 | 2020-11-03 | 湖南城市学院 | Violin bridge vibration detection system |
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Application publication date: 20170620 |
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