CN101793873A - Testing method of characteristics of sound vibration and point vibration of piano sound board and special equipment thereof - Google Patents
Testing method of characteristics of sound vibration and point vibration of piano sound board and special equipment thereof Download PDFInfo
- Publication number
- CN101793873A CN101793873A CN201010119899A CN201010119899A CN101793873A CN 101793873 A CN101793873 A CN 101793873A CN 201010119899 A CN201010119899 A CN 201010119899A CN 201010119899 A CN201010119899 A CN 201010119899A CN 101793873 A CN101793873 A CN 101793873A
- Authority
- CN
- China
- Prior art keywords
- vibration
- soundboard
- frequency
- audio
- piano
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention discloses a testing method of characteristics of sound vibration and point vibration of a piano sound board and special equipment thereof. The testing method of sound vibration and point vibration comprises the steps of applying the modern technologies, such as magnetostriction, audio measurement, vibration measurement, computer frequency spectrum analysis and the like in the manufacturing process of the piano sound board, utilizing a sound sensor and a vibration sensor for respectively detecting an integral sound vibration signal of the sound board and a point vibration signal of a local area, then analyzing the comprehensive vibration characteristics of the sound board through a computer frequency spectrum system, and further realizing the oriented tuning of the sound board. The method has the advantages of high sensitivity, fast and accurate measurement and strong intuition, and can effectively control the sound of the sound board and provide the scientific method and means for objective identification, evaluation and tuning of the acoustic quality of the piano sound board.The special equipment for testing of the characteristics of the sound vibration and the point vibration of the piano sound board mainly comprises an audio sweep signal generator, a magnetostrictive audio transducer, a measurement microphone, an accelerometer, a data acquisition card, professional frequency spectrum analysis software, a computer and the like.
Description
Technical field
The present invention relates to musical instrument and manufacture and the acoustic quality field tests, particularly a kind of piano soundboard acoustic vibration and some vibration characteristics method of testing and specialized equipment.
Background technology
Previous finding and practical production experience had shown already that several timber that have only minority were fit to make piano soundboard, and wherein Picea genera wood is to make the optimal material of piano soundboard.The soundboard of modern upright piano and grand piano, have three parts and form, be i.e. sounding board (by the veneer of many small strip splicings), crown cut (lumps of wood bar that paste in the front of sounding board), stall bars (back side of sounding board paste with the identical batten of sounding board batten number).The effect of soundboard is that the vibrations of strings energy is converted into the vibration of air effectively by resonance mechanism, to space radiation acoustic energy, and beautifies its tone color.The acoustic vibration performance of soundboard has determined the quality of piano to a great extent.
In traditional piano soundboard production technology, from the select materials making of sounding board of timber, arrive the final molding of soundboard again, mainly depend on the technician sight, mode such as weigh, strike, listen in the hand, pass judgment on and experience by subjectivity, judge the acoustic vibration performance quality of soundboard, take this to carry out temperament, owing to do not have scientific basis and testing tool concrete, system, make the tone color of the vibration performance of soundboard and decision thus have very big uncertainty; On the other hand, timber is as a kind of resonance sounding material, when changing its thickness or radian, its vibration characteristics also changes thereupon, that is to say that the acoustic resonance performance of timber can be controlled within the specific limits, and the situation of reality is in the soundboard production practices, have no way of measuring vibration characteristics and variation thereof, in a single day soundboard is made, even find to have defective in vibration, is difficult to it be adjusted again.Traditional system qin technology makes the improvement of piano sound and the raising of quality be restricted.
According to domestic and foreign literature and patent data library searching, at present to the acoustic vibration characteristic research of musical instrument (piano) soundboard, concentrate on suitable acoustic vibration performance of making the wood cell of musical instrument soundboard is estimated, seldom relate to acoustic vibration The Characteristic Study to the monoblock soundboard finished product of having made, about the measuring technology of soundboard acoustic vibration feature, still there is not the report of achievement in research in this respect.
Summary of the invention
The present invention mainly solves the problem that does not have the acoustic vibration of science characteristic detecting method in the piano soundboard making link, and purpose is assay method and the means that a science is provided for the objective evaluation of piano acoustic quality and soundboard temperament.On mentality of designing, at first after using artificial method (audio frequency energy-conversion technique) excitation soundboard or the soundboard vibration, give off acoustic energy; Use the vibration (vibration characteristics of reflection soundboard integral body) of audio frequency measuring technique detecting air then, use vibration measurement technique to survey the vibration of soundboard regional area; With acoustic vibration signal and soundboard local vibration signal input data collecting card, carry out data processing afterwards, with the mode of vibration quantification of two kinds of forms, show at last with graphical form by the computing machine spectrum systems.The present invention has extended to make the perception of technician to acoustical vibration and qin panel vibration, as a kind of aid, will play an important role to the directed temperament and the tone color control of piano soundboard.
Technology path of the present invention comprises following four aspects:
1, artificial excitation's vibration source.Utilize magnetostrictive technology, the excitation soundboard produces two kinds of form vibrations: the time dependent frequency sweep vibration of (1) frequency; (2) the pure frequency sine wave oscillations of standard.
2, the test of the whole acoustic vibration characteristic of soundboard.Utilize the audio-frequency test technology, measure the acoustic irradiation that soundboard forms under the frequency sweep vibrational excitation, be i.e. the sound that sends of soundboard, the actual responding ability that reflects soundboard integral body to different vibration frequencies of this acoustic irradiation.Detector is exported with electrical signal form, and signal intensity is directly proportional with acoustic pressure (qin panel vibration responding ability).Signal through fast fourier transform (FFT) and frequency-domain analysis, demonstrates the acoustic vibration characteristic of soundboard by the computing machine spectrum systems with frequency resonance response curve or spectrogram form after data acquisition and analog to digital conversion.
3, soundboard regional area vibration characteristics test.Different frequency is vibratory response position difference on the qin plate, and finding the accurate location of each frequency vibration on soundboard is an important content of vibration-testing.At first produce the pure frequency sine wave oscillations of standard, utilize acceleration transducer by audio-frequency transducer, the faint deformation that takes place during the vibration of perception soundboard, and produce electric signal, signal intensity is directly proportional with the oscillation intensity in this soundboard zone.Signal is measured the Oscillation Amplitude of qin plate zones of different after the machine spectrum systems is analyzed as calculated, determines qin panel vibration sensitive spot, i.e. " acupuncture point " with this.
4, the directed temperament of soundboard.With standard piano or name qin is template.At first the frequency resonance response curve or the spectrogram of bioassay standard qin soundboard, then in new qin soundboard manufacturing process, by soundboard body vibration and local domain oscillation characteristic test, by constantly repairing the thickness of cutting the qin plate or the radian that changes soundboard, the frequency resonance response curve of new qin soundboard is adjusted to the state identical with the standard soundboard, to reach the purpose of directed temperament.
The present invention for the technical scheme that solves the problems of the technologies described above employing is: a kind of piano soundboard acoustic vibration is provided and puts vibration characteristics method of testing and specialized equipment.Described piano soundboard acoustic vibration and some vibration characteristics test specialized equipment, comprise signal generator, power amplifier, audio-frequency transducer, measuring microphone, measuring amplifier, vibration transducer, charge amplifier, signal conditioner, data acquisition unit, spectrum analysis software and computing machine, described spectrum analysis software is installed on computers, described signal generator, power amplifier links to each other with audio-frequency transducer, described measuring microphone, measuring amplifier links to each other with data acquisition unit, described vibration transducer, charge amplifier, signal conditioner links to each other with data acquisition unit, and described data acquisition unit links to each other with computing machine.
Optimal technical scheme according to piano soundboard acoustic vibration of the present invention and some vibration characteristics test specialized equipment: described signal generator is the frequency sweep audio signal generator, and the function of signal generator can be substituted by the computing machine special software.
Optimal technical scheme according to piano soundboard acoustic vibration of the present invention and some vibration characteristics test specialized equipment: described audio-frequency transducer is the ultra-magnetic telescopic audio-frequency transducer.
According to the optimal technical scheme of piano soundboard acoustic vibration of the present invention with some vibration characteristics test specialized equipment: described vibration transducer is an acceleration transducer, acceleration transducer and charge amplifier or be integrated in the device, or be installed separately.
Optimal technical scheme according to piano soundboard acoustic vibration of the present invention and some vibration characteristics test specialized equipment: described measuring microphone is condenser microphone or electret capacitor microphone.
Optimal technical scheme according to piano soundboard acoustic vibration of the present invention and some vibration characteristics test specialized equipment: described data acquisition unit is a digital audio interface.
Optimal technical scheme according to piano soundboard acoustic vibration of the present invention and some vibration characteristics test specialized equipment: the described utilization of spectrum analysis software fft algorithm, i.e. fast fourier transform method algorithm.
The present invention also provides a kind of piano soundboard acoustic vibration and has put the vibration characteristics method of testing, described piano soundboard acoustic vibration and some vibration characteristics method of testing comprise two methods, be whole acoustic vibration characteristic test method of soundboard and soundboard partial points vibration characteristics method of testing, these two methods or separate carrying out, or combination is carried out.
The whole acoustic vibration characteristic test method of described soundboard relates to audio frequency sweep generator, power amplifier, magnetostriction audio-frequency transducer, measuring microphone, measuring amplifier, data acquisition unit, professional spectrum analysis software and computing machine, and the realization of the whole acoustic vibration characteristic test method of described soundboard comprises the steps:
The first step: soundboard or soundboard are fixed on the surface of contact of magnetostriction audio-frequency transducer;
Second step: sweep generator or computer software produce the time dependent swept-frequency signal of frequency, produce vibration by audio-frequency transducer excitation soundboard;
The 3rd step: the measured microphone of the sound of soundboard vibration radiation receives, and signal enters data acquisition unit, by professional spectrum analysis software calculate with spectrum analysis after, show the frequency resonance response curve or the spectrogram of soundboard;
The 4th step: according to frequency resonance response curve or spectrogram, the acoustic vibration feature that the discriminatory analysis soundboard is overall.
Described soundboard partial points vibration characteristics method of testing relates to audio frequency sweep generator, power amplifier, magnetostriction audio-frequency transducer, acceleration transducer, charge amplifier, signal conditioner, data acquisition unit, professional spectrum analysis software and computing machine, and the realization of described soundboard regional area point vibration characteristics method of testing comprises the steps:
The first step: soundboard is fixed on the surface of contact of magnetostriction audio-frequency transducer;
Second step: sweep generator or computer software produce the pure frequency sine wave signal of standard, produce vibration by audio-frequency transducer excitation soundboard;
The 3rd step: certain that vibration transducer is placed on soundboard a bit on, deformation and displacement degree of being accelerated sensor that the soundboard vibration causes receive, change electric signal into, enter data acquisition unit afterwards, by professional spectrum analysis software calculate with spectrum analysis after, show the Oscillation Amplitude of test zone;
The 4th step: movable sensor repeatedly, the Oscillation Amplitude of the different test zones that show according to computing machine is determined the vibration sensing point of soundboard under this excitation frequency, i.e. " acupuncture point ".
Use above-mentioned two method for testing vibration, vibration sensing point in conjunction with soundboard resonant frequency curve and a certain frequency is the test result at acupuncture point, radian by continuous change soundboard and repair the thickness of cutting soundboard, the vibration performance of soundboard is changed, thereby optimum condition is arrived in the tone color temperament of soundboard.
The invention has the advantages that: modern technologies such as magnetostriction, audio frequency measurement, vibration survey and computing machine spectrum analysis are applied in the piano soundboard manufacturing process, the advantage that method has is highly sensitive, measure quick and precisely, intuitive is strong, tone color that can directed control soundboard is for objective qualification, evaluation and the temperament of piano soundboard acoustic quality provides scientific methods and means.
Method of the present invention and specialized equipment can also be applied in the making and temperament of musical instrument soundboards such as guitar, harp and Chinese lute.
Description of drawings
Fig. 1 is piano soundboard acoustic vibration of the present invention and the schematic diagram of putting the vibration characteristics method;
Fig. 2 is piano soundboard acoustic vibration of the present invention and some vibration characteristics specialized equipment design drawing.
The accompanying drawing sign:
1 audio frequency sweep generator, 2 power amplifiers, 3 audio-frequency transducers
Dress IC acceleration transducer 6 ISK electric capacity Mikes in 4 qin plates, 5 LC
7 signal conditioners, 8 ICON specialty live wire audio interface
9 computing machine spectrum analyzer systems
Embodiment
Below in conjunction with specific embodiment and Figure of description the present invention is elaborated.
1, piano soundboard acoustic vibration and some vibration characteristics specialized equipment
A kind of piano soundboard acoustic vibration that present embodiment provides and some vibration characteristics specialized equipment, connect according to Fig. 1, principle as shown in Figure 2, comprise signal generator, power amplifier, audio-frequency transducer, measuring microphone, measuring amplifier, vibration transducer, charge amplifier, signal conditioner, data acquisition unit, spectrum analysis software and computing machine, described spectrum analysis software is installed on computers, described signal generator, power amplifier links to each other with audio-frequency transducer, described measuring microphone, measuring amplifier links to each other with data acquisition unit, described vibration transducer, charge amplifier, signal conditioner links to each other with data acquisition unit, and described data acquisition unit links to each other with computing machine.
According to Fig. 2, the present invention has carried out the optimization type selecting to employed assembly, disposes as follows:
(1) audio frequency sweep generator: select Changzhou Tong Hui--TH1312-20 for use, this instrument is that 33/4 LCD demonstration, sinewave output, distorted signals are little, good stability, frequency range cover whole audiorange.Manual frequency modulation, but also logarithm frequency sweep, frequency sweep starting point, terminal point and frequency sweep time all can be provided with as required.
(2) magnetostriction audio-frequency transducer: the B15 audio-frequency transducer of selecting Gansu Tianxing Rare-Earth Functional Material Co., Ltd.'s processing and fabricating for use, Hz-KHz 80Hz-15KHz, response speed can reach the microsecond level soon, and control accuracy reaches nanoscale, energy conversion rate is up to more than 70%, and acoustical power is 15W.Described audio frequency resonance transducer is magnetostriction audio-frequency transducer (has another name called and be the big magnetostriction audio-frequency transducer), and the patent No. is 00268460.8.
(3) acceleration transducer: adorn the IC piezoelectric acceleration sensor in the LC119T that selects for use Lang Si measuring technology company limited to produce, sensor and charge amplifier are integrated, sensitivity 500mV/g, and frequency range 0.7-10000Hz, resolution is 0.00004g.
(4) data collecting card: beauty competition state ICON FireXon live wire 4 is gone into 4 and is gone out audio interface, band 48V phantom power and electric signal prime enlarging function.
(5) computing machine spectrum analyzer system: form by professional software and computing machine.Specialty spectrum analysis software utilization fft algorithm, i.e. fast fourier transform method algorithm, this device adopt FFT Spectalab anyalysis system (version 4.32) that U.S. SoundTechnology company develops as spectrum analysis software.Described computing machine is used for professional frequency spectrum running software, carries out data operation and display analysis result, and operating system is windows XP Professional.
More than form connection, be qin panel vibration characteristic test specialized equipment of the present invention according to Fig. 1.
2, itself and the application in temperament of the explanation of piano soundboard acoustic vibration and some vibration characteristics method
Present embodiment provides a kind of method of testing of piano soundboard acoustic vibration characteristic, and relevant know-why is seen Fig. 2.Described piano soundboard acoustic vibration and some method for testing vibration and the application in the soundboard temperament comprise the steps:
The first step: the preparation of standard soundboard.Select the better piano soundboard of (through professional's subjective determination) of some tonequality, set 1 measurement point (A) at bass string at once, to set 2 measurement points (B and C) on the middle and high sound crown cut, use the whole acoustic vibration characteristic test method of soundboard of the present invention then, obtain frequency resonance response curve A, B and the C of 3 test points of each piece soundboard.Curve to these soundboards carries out statistical study, determines the resonant frequency curve (A of 3 test points of a soundboard
0, B
0, C
0) as standard form.
Second step: the making of new soundboard and vibration characteristics test.
(1) sounding board, stall bars chord and the link of selecting materials of timber, except the test of carrying out indexs such as the transaudient speed of timber, logarithmic decrement coefficient, elastic modulus harmony radiation constant, the whole acoustic vibration characteristic test method of the soundboard that utilizes this aspect to provide, measure the acoustic vibration characteristic of material, as one of important evidence of selection.
(2) after soundboard completes,, use the whole acoustic vibration characteristic test method of soundboard, obtain three frequency resonance response curve (A of new soundboard at A, B, three measurement points of C
1, B
1, C
1), with these curves respectively with the A of standard soundboard
0, B
0, C
0Comparative analysis, write down abnormal vibration on the new qin plate, amplitude bigger Frequency point.
(3) produce pure frequency sine wave signal by audio signal generator, input to audio-frequency transducer, in soundboard A, B, the vibration of three measurement point excitations of C soundboard, use soundboard regional area point Oscillation Amplitude method of testing of the present invention, by vibration transducer and computing machine spectrum analysis, find several oscillation points of this frequency, promptly finish the assignment test in abnormal vibrations zone.
The 3rd step: the temperament operation of new soundboard.After abnormal vibrations zone location test is finished, use the soundboard thickness that the planing means scraping should the zone, this regional vibration performance is changed.This operating process should slowly carefully be carried out under the monitoring of whole acoustic vibration characteristic test method of soundboard and soundboard partial points vibration characteristics method of testing, up to three frequency resonance response curve (A with new soundboard
1, B
1, C
1) adjust to the curve (A with the standard soundboard
0, B
0, C
0) identical substantially, so far finish soundboard temperament work.
Above content be in conjunction with concrete optimal technical scheme to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. a piano soundboard acoustic vibration is tested specialized equipment with the some vibration characteristics, it is characterized in that: described piano soundboard acoustic vibration and some vibration characteristics test specialized equipment, comprise signal generator, power amplifier, audio-frequency transducer, measuring microphone, measuring amplifier, vibration transducer, charge amplifier, signal conditioner, data acquisition unit, spectrum analysis software and computing machine, described spectrum analysis software is installed on computers, described signal generator, power amplifier links to each other with audio-frequency transducer, described measuring microphone, measuring amplifier links to each other with data acquisition unit, described vibration transducer, charge amplifier, signal conditioner links to each other with data acquisition unit, and described data acquisition unit links to each other with computing machine.
2. piano soundboard acoustic vibration according to claim 1 and some vibration characteristics test specialized equipment, it is characterized in that: described signal generator is the frequency sweep audio signal generator, the function of signal generator can be substituted by the computing machine special software.
3. piano soundboard acoustic vibration according to claim 1 and some vibration characteristics test specialized equipment, it is characterized in that: described audio-frequency transducer is the ultra-magnetic telescopic audio-frequency transducer.
4. piano soundboard acoustic vibration according to claim 1 and some vibration characteristics test specialized equipment, it is characterized in that: described vibration transducer is an acceleration transducer, acceleration transducer and charge amplifier or be integrated in the device, or be installed separately.
5. piano soundboard acoustic vibration according to claim 1 and some vibration characteristics test specialized equipment, it is characterized in that: described measuring microphone is condenser microphone or electret capacitor microphone.
6. piano soundboard acoustic vibration according to claim 1 and some vibration characteristics test specialized equipment, it is characterized in that: described data acquisition unit is a digital audio interface.
7. piano soundboard acoustic vibration according to claim 1 and some vibration characteristics test specialized equipment is characterized in that: the described utilization of spectrum analysis software fft algorithm, i.e. fast fourier transform method algorithm.
8. piano soundboard acoustic vibration and some vibration characteristics method of testing, it is characterized in that: described piano soundboard acoustic vibration and some vibration characteristics method of testing comprise two methods, be whole acoustic vibration characteristic test method of soundboard and soundboard partial points vibration characteristics method of testing, these two methods or separate carrying out, or combination is carried out.
9. piano soundboard acoustic vibration according to claim 8 and some vibration characteristics method of testing, it is characterized in that: the whole acoustic vibration characteristics test method of described soundboard relates to audio frequency sweep generator, power amplifier, magnetostriction audio-frequency transducer, measuring microphone, measuring amplifier, data acquisition unit, professional spectrum analysis software and computing machine, and the realization of the whole acoustic vibration characteristics test method of described soundboard comprises the steps:
The first step: soundboard or soundboard are fixed on the surface of contact of magnetostriction audio-frequency transducer;
Second step: sweep generator or computer software produce the time dependent swept-frequency signal of frequency, produce vibration by audio-frequency transducer excitation soundboard;
The 3rd step: the measured microphone of the sound of soundboard vibration radiation receives, and signal enters data acquisition unit, by professional spectrum analysis software calculate with spectrum analysis after, show the frequency resonance response curve or the spectrogram of soundboard;
The 4th step: according to frequency resonance response curve or spectrogram, the acoustic vibration feature that the discriminatory analysis soundboard is overall.
10. piano soundboard acoustic vibration according to claim 8 and some vibration characteristics method of testing, it is characterized in that: described soundboard partial points vibration characteristics method of testing relates to audio frequency sweep generator, power amplifier, magnetostriction audio-frequency transducer, acceleration transducer, charge amplifier, signal conditioner, data acquisition unit, professional spectrum analysis software and computing machine, and the realization of described soundboard regional area point vibration characteristics method of testing comprises the steps:
The first step: soundboard is fixed on the surface of contact of magnetostriction audio-frequency transducer;
Second step: sweep generator or computer software produce the pure frequency sine wave signal of standard, produce vibration by audio-frequency transducer excitation soundboard;
The 3rd step: certain that vibration transducer is placed on soundboard a bit on, deformation and displacement degree of being accelerated sensor that the soundboard vibration causes receive, change electric signal into, enter data acquisition unit afterwards, by professional spectrum analysis software calculate with spectrum analysis after, show the Oscillation Amplitude of test zone;
The 4th step: movable sensor repeatedly, the Oscillation Amplitude of the different test zones that show according to computing machine is determined the vibration sensing point of soundboard under this excitation frequency, i.e. " acupuncture point ".
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010119899 CN101793873B (en) | 2010-03-02 | 2010-03-02 | Testing method of characteristics of sound vibration and point vibration of piano sound board and special equipment thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010119899 CN101793873B (en) | 2010-03-02 | 2010-03-02 | Testing method of characteristics of sound vibration and point vibration of piano sound board and special equipment thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101793873A true CN101793873A (en) | 2010-08-04 |
| CN101793873B CN101793873B (en) | 2013-01-02 |
Family
ID=42586679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010119899 Expired - Fee Related CN101793873B (en) | 2010-03-02 | 2010-03-02 | Testing method of characteristics of sound vibration and point vibration of piano sound board and special equipment thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101793873B (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538941A (en) * | 2012-01-06 | 2012-07-04 | 中国空气动力研究与发展中心高速空气动力研究所 | Device and method for conventional balance to measure natural frequency of cantilever supported model in wind tunnel |
| CN102680573A (en) * | 2012-05-07 | 2012-09-19 | 刘镇波 | Timber vibration property tester based on uniform force knocking method |
| CN103165121A (en) * | 2011-12-09 | 2013-06-19 | 雅马哈株式会社 | Signal processing device |
| CN103308155A (en) * | 2013-05-28 | 2013-09-18 | 李子晋 | Comprehensive evaluation system and method of acoustic quality of piano soundboard |
| CN104237870A (en) * | 2014-08-21 | 2014-12-24 | 中国船舶重工集团公司第七一五研究所 | Device and method for testing low-frequency linear array acoustic performance in air |
| CN104864956A (en) * | 2015-04-28 | 2015-08-26 | 中山大学 | Kinetic measuring method for stringed instrument, and measuring instrument thereof |
| CN104977466A (en) * | 2015-05-29 | 2015-10-14 | 福建联迪商用设备有限公司 | Stepping motor pulse frequency test method, system and equipment thereof |
| CN104237870B (en) * | 2014-08-21 | 2017-01-04 | 中国船舶重工集团公司第七一五研究所 | The device of a kind of low frequency wire array acoustical behavior of test in atmosphere and method of testing |
| 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 |
| US10475428B2 (en) | 2015-09-18 | 2019-11-12 | Multipitch Inc. | Electronic measuring device |
| CN112525330A (en) * | 2020-11-17 | 2021-03-19 | 北京航天计量测试技术研究所 | Device and method for testing vibration sensitivity of microphone |
| CN113108894A (en) * | 2021-03-30 | 2021-07-13 | 华南理工大学 | Transient sound field measuring system and method of musical instrument soundboard based on audio array acquisition |
| CN114389491A (en) * | 2021-12-14 | 2022-04-22 | 歌尔股份有限公司 | Motor vibration control method, motor vibration control device, computer equipment and storage medium |
| US11668678B1 (en) * | 2018-09-12 | 2023-06-06 | Bryan John Galloup | Material selection system and method for constructing a musical instrument |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4084473A (en) * | 1975-08-19 | 1978-04-18 | Kabushiki Kaisha Kawai Gakki Seisakusho | Electric piano |
| JP2000315088A (en) * | 1999-04-30 | 2000-11-14 | Kiyohiko Yamaya | Pickup device of piano |
| CN1337040A (en) * | 1999-01-15 | 2002-02-20 | 弗雪曼变换器股份有限公司 | Measurement and procesing of stringer acoustic instrument signals |
| CN2847246Y (en) * | 2005-10-28 | 2006-12-13 | 中国海洋大学 | Muscial instrument audio frequency characteristic resonance meter |
| US20080034946A1 (en) * | 2005-08-03 | 2008-02-14 | Massachusetts Institute Of Technology | User controls for synthetic drum sound generator that convolves recorded drum sounds with drum stick impact sensor output |
-
2010
- 2010-03-02 CN CN 201010119899 patent/CN101793873B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4084473A (en) * | 1975-08-19 | 1978-04-18 | Kabushiki Kaisha Kawai Gakki Seisakusho | Electric piano |
| CN1337040A (en) * | 1999-01-15 | 2002-02-20 | 弗雪曼变换器股份有限公司 | Measurement and procesing of stringer acoustic instrument signals |
| JP2000315088A (en) * | 1999-04-30 | 2000-11-14 | Kiyohiko Yamaya | Pickup device of piano |
| US20080034946A1 (en) * | 2005-08-03 | 2008-02-14 | Massachusetts Institute Of Technology | User controls for synthetic drum sound generator that convolves recorded drum sounds with drum stick impact sensor output |
| CN2847246Y (en) * | 2005-10-28 | 2006-12-13 | 中国海洋大学 | Muscial instrument audio frequency characteristic resonance meter |
Non-Patent Citations (4)
| Title |
|---|
| 刘宝利等: "钢琴音板振动的试验模态分析(续)", 《乐器》 * |
| 刘镇波等: "实际尺寸乐器音板用云杉属木材的声学振动特性", 《林业科学》 * |
| 李子晋: "钢琴音板声学品质的分析与检测", 《演艺设备与科技》 * |
| 龙士国等: "稀土超磁致伸缩换能器的研制及其在桥梁检测中的应用", 《功能材料》 * |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103165121A (en) * | 2011-12-09 | 2013-06-19 | 雅马哈株式会社 | Signal processing device |
| CN103165121B (en) * | 2011-12-09 | 2017-03-01 | 雅马哈株式会社 | Signal handling equipment |
| US9099069B2 (en) | 2011-12-09 | 2015-08-04 | Yamaha Corporation | Signal processing device |
| CN102538941A (en) * | 2012-01-06 | 2012-07-04 | 中国空气动力研究与发展中心高速空气动力研究所 | Device and method for conventional balance to measure natural frequency of cantilever supported model in wind tunnel |
| CN102680573A (en) * | 2012-05-07 | 2012-09-19 | 刘镇波 | Timber vibration property tester based on uniform force knocking method |
| CN102680573B (en) * | 2012-05-07 | 2014-07-16 | 刘镇波 | Timber vibration property tester based on uniform force knocking method |
| CN103308155B (en) * | 2013-05-28 | 2016-03-30 | 李子晋 | Piano soundboard acoustic quality comprehensive evaluating system and evaluating method |
| CN103308155A (en) * | 2013-05-28 | 2013-09-18 | 李子晋 | Comprehensive evaluation system and method of acoustic quality of piano soundboard |
| CN104237870B (en) * | 2014-08-21 | 2017-01-04 | 中国船舶重工集团公司第七一五研究所 | The device of a kind of low frequency wire array acoustical behavior of test in atmosphere and method of testing |
| CN104237870A (en) * | 2014-08-21 | 2014-12-24 | 中国船舶重工集团公司第七一五研究所 | Device and method for testing low-frequency linear array acoustic performance in air |
| CN104864956A (en) * | 2015-04-28 | 2015-08-26 | 中山大学 | Kinetic measuring method for stringed instrument, and measuring instrument thereof |
| CN104977466A (en) * | 2015-05-29 | 2015-10-14 | 福建联迪商用设备有限公司 | Stepping motor pulse frequency test method, system and equipment thereof |
| CN104977466B (en) * | 2015-05-29 | 2019-05-21 | 福建联迪商用设备有限公司 | A kind of test method, system and its equipment of stepping motor pulses frequency |
| US10475428B2 (en) | 2015-09-18 | 2019-11-12 | Multipitch Inc. | Electronic measuring device |
| 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 |
| US11668678B1 (en) * | 2018-09-12 | 2023-06-06 | Bryan John Galloup | Material selection system and method for constructing a musical instrument |
| CN112525330A (en) * | 2020-11-17 | 2021-03-19 | 北京航天计量测试技术研究所 | Device and method for testing vibration sensitivity of microphone |
| CN113108894A (en) * | 2021-03-30 | 2021-07-13 | 华南理工大学 | Transient sound field measuring system and method of musical instrument soundboard based on audio array acquisition |
| CN114389491A (en) * | 2021-12-14 | 2022-04-22 | 歌尔股份有限公司 | Motor vibration control method, motor vibration control device, computer equipment and storage medium |
| CN114389491B (en) * | 2021-12-14 | 2023-10-20 | 歌尔股份有限公司 | Motor vibration control method, apparatus, computer device, and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101793873B (en) | 2013-01-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101793873B (en) | Testing method of characteristics of sound vibration and point vibration of piano sound board and special equipment thereof | |
| CN101442698B (en) | Method for measuring linear parameter of loudspeaker | |
| CN201945429U (en) | Device for analyzing vibration characteristic of wind turbine blade | |
| CN103698404B (en) | Damping material fissipation factor measuring method based on impulse response method and measurement apparatus | |
| CN103344324B (en) | Vibration excitation equipment for entire acoustic vibration of violin and system and method for measuring frequency spectrum | |
| CN103808574B (en) | The dynamic testing method of timber Poisson's ratio | |
| CN101789237B (en) | Violin table tone setting and case assembling tone tuning method and special device | |
| CN101806616A (en) | Test method of vibration characteristic of violin board and special equipment thereof | |
| CN101520438A (en) | Tester for dynamic complex modulus and damping of loudspeaker vibrating diaphragm material | |
| Boullosa | Vibration measurements in the classical guitar | |
| CN2847246Y (en) | Muscial instrument audio frequency characteristic resonance meter | |
| Liao et al. | Estimation of complex modulus using wave coefficients | |
| US5423241A (en) | Quantitative method for evaluation of the state of piano hammer felt tonal regulation | |
| CN106370293A (en) | Measurement system and decomposition method for integral sound vibration and firmware vibration of violin | |
| WO2020191704A1 (en) | Composite material dynamic fatigue testing device and method based on reverse resonance | |
| CN202135323U (en) | Diaphragm test device | |
| CN103308155B (en) | Piano soundboard acoustic quality comprehensive evaluating system and evaluating method | |
| Rokni et al. | The production of phantom partials due to nonlinearities in the structural components of the piano | |
| Mariani et al. | An innovative method for in situ monitoring of the detachments in architectural coverings of ancient structures | |
| Jiolat et al. | Whistling in the clavichord | |
| CN206269919U (en) | Violin entirety acoustic vibration and the measuring system of firmware vibration | |
| Hess | Frequency response evaluation of acoustic guitar modifications | |
| Batahong et al. | Vibrational Properties of sundatang soundboard | |
| JP2001124744A (en) | Inspection apparatus for concrete structure | |
| Gaidis et al. | New test for determining fundamental frequencies of concrete |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 124010 No. 168, Taishan Road, Xinglongtai District, Liaoning, Panjin Applicant after: Wang Hongwei Address before: 116001, room 127, 203 Nanshan Road, Zhongshan District, Liaoning, Dalian Applicant before: Wang Hongwei |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20150302 |
|
| EXPY | Termination of patent right or utility model |