CN206269919U - Violin entirety acoustic vibration and the measuring system of firmware vibration - Google Patents
Violin entirety acoustic vibration and the measuring system of firmware vibration Download PDFInfo
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- CN206269919U CN206269919U CN201621195745.9U CN201621195745U CN206269919U CN 206269919 U CN206269919 U CN 206269919U CN 201621195745 U CN201621195745 U CN 201621195745U CN 206269919 U CN206269919 U CN 206269919U
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- violin
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Abstract
A kind of violin entirety acoustic vibration and the measuring system of firmware vibration, including violin excitational equipment, sonic transducer, sound signal amplifier, analog-digital converter, computer acoustic analysis system；Laser scanning front end, optical signal amplifier, photoelectric signal converter；Two giant magnetostrictive transducers of frequency range of excited frequency 20Hz -11kHz and 9.5kHz -21kHz are set in described excitational equipment；Sonic transducer receives violin entirety acoustic vibration signal, and by amplifying, being converted into data signal, computer acoustic analysis system is to generating violin entirety acoustic vibration spectrogram after Digital Signal Processing；Laser scanning front end will gather the optical signalling of violin firmware vibration after Laser Focusing, electric signal is converted into by being input into photoelectric signal converter after optical signal amplifier amplification, electric signal is by generating violin firmware rumble spectrum figure after computer acoustic analysis system processes.The utility model realizes the high-acruracy survey of violin entirety acoustic vibration and contactless firmware vibration measurement.
Description
Technical field
The utility model is related to acoustic measurement device, more particularly to the measurement system of violin entirety acoustic vibration and firmware vibration
System.
Background technology
Violin is one of most interesting to listen to musical instrument of the artificial most harmonious, sound of vibration.As the mankind are to resonance human-subject test
Raising, all multi-experts, scholar show to be ground to the mode of oscillation of each acoustic element of violin and its with overall acoustic vibration relation
The interest studied carefully.
The intrinsic frequency and coupled problem of analysis and research each firmware of violin and multistage cavity, it will help use for reference violin
Overall Vibration properties, adjust each firmware to reach expected tone color；Protrude national musical instruments reform medium-high frequency that low frequency is weaker causes
The research that each musical instrument or each part cannot justify the problems such as melting also has reference.
Chinese patent 201310251305.5《A kind of violin entirety acoustic vibration excitational equipment and spectrum measurement system and side
Method》, the modern technologies such as ultra-magnetic telescopic energy-conversion technique, vibration measurement and computer spectrum analysis are applied to violin entirety sound
In vibration performance test link, bridge by string vibration drawing, rock by horizontal direction under not only simulating violin state
With the motion state of vertical direction alternately vibration, while so that measuring environment is closer to the true playing state of violin, improving
The accuracy and science of spectrum measurement result.But, its high-acruracy survey that can't realize violin entirety acoustic vibration,
Can not realize that contactless firmware vibration measurement and the vibration of multistage cavity are decomposed from overall acoustic vibration.
The content of the invention
The purpose of this utility model is the measuring system for providing a kind of violin entirety acoustic vibration and firmware vibration, with reality
The non-contact exact measurement of each order intrinsic frequencies of firmware such as existing soundboard.
The utility model provides following technical scheme to achieve the above object：
A kind of entirety acoustic vibration of violin and the measuring system of firmware vibration, including violin excitational equipment, sonic transducer,
Sound signal amplifier, analog-digital converter, computer acoustic analysis system；Also include laser scanning front end, optical signal amplifier, light
Electric signal transducer, violin fixed support；Excited frequency 20Hz -11kHz and 9.5kHz-are set in described excitational equipment
Two giant magnetostrictive transducers of frequency range of 21kHz；Described violin is fixed on violin fixed mount, and excitational equipment is solid
Being scheduled on the chin rest position of violin makes stretch arm pull string；Described sonic transducer is placed in 1 meter of violin f holes front to be measured
Place；The laser scanning front end is placed at 1-2 meters of violin firmware front to be measured；Audio signal generator in excitational equipment
After sine wave signal is amplified through power amplifier, giant magnetostrictive transducer is input into, transducer is connected by with output ejector pin
String stretch arm input violin string be allowed to vibrate, subsequent string vibration signal causes small carrying by the incoming qin case of bridge
The multistage cavity of qin and each firmware coupled vibrations；Sonic transducer receives violin entirety acoustic vibration signal, by sound signal amplifier
Data signal is converted into through A/D converter after amplification, computer acoustic analysis system after Digital Signal Processing to generating violin
Overall acoustic vibration spectrogram；Laser scanning front end will gather the optical signalling of violin firmware vibration after Laser Focusing, after pass through
Cross input photoelectric signal converter after optical signal amplifier amplifies and be converted into electric signal, electric signal is analyzed by computer acoustic and is
Each firmware rumble spectrum figure of violin is generated after system treatment.
Described violin firmware is the parts such as soundboard (panel, backboard and side plate), chord-drawing plate, fingerboard, bridge and scroll head.
Described computer acoustic analysis system has fft analysis function and frequency spectrum comparing function.
The laser scanning front end is the laser scanning vialog manufactured using doppler principle, using novel embedded hawk
Eye high-definition camera, possesses high spatial resolution, measures area covering from several mm2To number m2, scanning angle is 50 ° of 40 ° of x.
The beneficial effects of the utility model and advantage compared with prior art：
1st, be set to the giant magnetostrictive transducer output frequency range in excitational equipment can linear convergent rate for the utility model
Two frequency ranges of 20Hz --- 11kHz and 9.5kHz -21kHz, improve output accuracy.
The 2nd, scanning laser Doppler vibration measuring system is introduced non-cpntact measurement and the independent measurement of each firmwares such as soundboard.Not
Change under conditions of the firmware quality such as violin soundboard, realize carries out accurate measurement to its intrinsic frequency.
3rd, the utility model is tone color adjustment, acoustic quality objective qualification and violin teaching during violin making
A feasible commercial measurement means are provided with research is played.
Brief description of the drawings
The entirety acoustic vibration of Fig. 1 the utility model violin and the measuring system structural representation of firmware vibration
Specific embodiment
The utility model is made with reference to accompanying drawing being further illustrated
A kind of violin entirety acoustic vibration as described in Figure 1 and the measuring system of firmware vibration, including violin exciting set
Standby, sonic transducer, sound signal amplifier, analog-digital converter, computer acoustic analysis system；It is characterised by also including laser scanning
Front end, optical signal amplifier, photoelectric signal converter, violin fixed support；Excited frequency is set in described excitational equipment
Two giant magnetostrictive transducers of frequency range of 20Hz -11kHz and 9.5kHz -21kHz；Described violin is fixed on small carrying
On qin fixed mount, the chin rest position that excitational equipment is fixed on violin makes stretch arm pull string；Described sonic transducer is placed in
At 1 meter of violin f holes front to be measured；The laser scanning front end is placed at 1-2 meters of violin firmware front to be measured；Exciting sets
After audio signal generator in standby amplifies sine wave signal through power amplifier, giant magnetostrictive transducer, transducing are input into
Device is input into violin string and is allowed to vibrate by the string stretch arm connected with output ejector pin, and subsequent string vibration signal passes through qin
The incoming qin case of code, causes the multistage cavity of violin and each firmware coupled vibrations；Sonic transducer receives violin entirety acoustic vibration letter
Number, data signal is converted into through A/D converter after sound signal amplifier amplifies, computer acoustic analysis system is believed numeral
Violin entirety acoustic vibration spectrogram is generated after number treatment；Laser scanning front end will gather the vibration of violin firmware after Laser Focusing
Optical signalling, by optical signal amplifier amplification after be input into photoelectric signal converter be converted into electric signal (voltage signal, that is, count
Word signal), electric signal is by generating violin firmware rumble spectrum figure after computer acoustic analysis system processes.
Described violin firmware is the parts such as soundboard (panel, backboard and side plate), chord-drawing plate, fingerboard, bridge and scroll head.
Described computer acoustic analysis system has fft analysis function and frequency spectrum comparing function.
The excitational equipment is a kind of violin entirety acoustic vibration excitational equipment, and the equipment can at utmost simulation be small carries
String real vibrational state when qin is played.Transducer in the excitational equipment is giant magnetostrictive transducer (mainly by dilute
Soil material (TbFe2, DyFe2, SmFe2 etc.) is made, and frequency response range is 20Hz -21kHz, and drawing Bit andits control precision is
10-6 meters)；
The laser scanning front end is the laser scanner manufactured using doppler principle, high using novel embedded hawkeye
Clear video camera, possesses high spatial resolution, measures area covering from several mm2To number m2, scanning angle is 50 ° of 40 ° of x.
Claims (4)
1. the measuring system that a kind of violin entirety acoustic vibration and firmware vibrate, including violin excitational equipment, sonic transducer, sound
Signal amplifier, analog-digital converter, computer acoustic analysis system；It is characterised by also including laser scanning front end, optical signal amplifying
Big device, photoelectric signal converter, violin fixed support；Set in described excitational equipment excited frequency 20Hz -11kHz and
Two giant magnetostrictive transducers of frequency range of 9.5kHz -21kHz；Described violin is fixed on violin fixed mount, is swashed
The chin rest position that the equipment of shaking is fixed on violin makes stretch arm pull string；Described sonic transducer is placed in violin f holes to be measured
At 1 meter of front；The laser scanning front end is placed at 1-2 meters of violin firmware front to be measured；Audio signal in excitational equipment
After generator amplifies sine wave signal through power amplifier, giant magnetostrictive transducer is input into, transducer passes through and output top
The string stretch arm input violin string of bar connection is allowed to vibrate, and subsequent string vibration signal is drawn by the incoming qin case of bridge
Play the multistage cavity of violin and each firmware coupled vibrations；Sonic transducer receives violin entirety acoustic vibration signal, by acoustical signal
Amplifier is converted into data signal after amplifying through A/D converter, and computer acoustic analysis system after Digital Signal Processing to generating
Violin entirety acoustic vibration spectrogram；Laser scanning front end will gather the optical signalling of violin firmware vibration after Laser Focusing,
Electric signal is converted into by being input into photoelectric signal converter after optical signal amplifier amplification, electric signal is analyzed by computer acoustic
Violin firmware rumble spectrum figure is generated after system treatment.
2. the measuring system that a kind of violin entirety acoustic vibration as claimed in claim 1 and firmware vibrate, it is characterised in that institute
The violin firmware stated is soundboard, chord-drawing plate, fingerboard, bridge or scroll head.
3. the measuring system that a kind of violin entirety acoustic vibration as claimed in claim 1 and firmware vibrate, it is characterised in that institute
The computer acoustic analysis system stated has fft analysis function and frequency spectrum comparing function.
4. the measuring system that a kind of violin entirety acoustic vibration as claimed in claim 1 and firmware vibrate, it is characterised in that institute
The laser scanning front end stated is the laser scanning vialog using doppler principle manufacture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621195745.9U CN206269919U (en) | 2016-11-04 | 2016-11-04 | Violin entirety acoustic vibration and the measuring system of firmware vibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621195745.9U CN206269919U (en) | 2016-11-04 | 2016-11-04 | Violin entirety acoustic vibration and the measuring system of firmware vibration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206269919U true CN206269919U (en) | 2017-06-20 |
Family
ID=59038474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621195745.9U Expired - Fee Related CN206269919U (en) | 2016-11-04 | 2016-11-04 | Violin entirety acoustic vibration and the measuring system of firmware vibration |
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| Country | Link |
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| CN (1) | CN206269919U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370293A (en) * | 2016-11-04 | 2017-02-01 | 山西大学 | Measurement system and decomposition method for integral sound vibration and firmware vibration of violin |
-
2016
- 2016-11-04 CN CN201621195745.9U patent/CN206269919U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370293A (en) * | 2016-11-04 | 2017-02-01 | 山西大学 | Measurement system and decomposition method for integral sound vibration and firmware vibration of violin |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170620 Termination date: 20191104 |