CN108877743A - A kind of piano musical note calibrating installation and application method based on sound string vibration signal - Google Patents
A kind of piano musical note calibrating installation and application method based on sound string vibration signal Download PDFInfo
- Publication number
- CN108877743A CN108877743A CN201810364927.1A CN201810364927A CN108877743A CN 108877743 A CN108877743 A CN 108877743A CN 201810364927 A CN201810364927 A CN 201810364927A CN 108877743 A CN108877743 A CN 108877743A
- Authority
- CN
- China
- Prior art keywords
- vibration signal
- piano
- sound
- mobile
- lock block
- 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
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10C—PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICAL INSTRUMENTS WITH ONE OR MORE KEYBOARDS
- G10C3/00—Details or accessories
- G10C3/10—Tuning pins; Tensioning devices
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Electrophonic Musical Instruments (AREA)
Abstract
The invention proposes a kind of piano musical note calibrating installations and application method based on sound string vibration signal, improve the tuning efficiency of piano, improve the quality of piano, including sizing stop and signal pickup assembly, sizing stop is provided at two, ball-screw is provided at two between sizing stop, pair of nut I and pair of nut II are provided on ball-screw, the outside of pair of nut I is provided with mobile support plate I, the outside of pair of nut II is provided with mobile support plate II, lower platen is provided on mobile support plate I, towing plate is provided on mobile support plate II, lower platen connects towing plate by draught line, the lower part of lower platen is provided with lower lock block；The present invention is provided with lower lock block, pushes key by lower lock block and generates vibration to string, lower lock block returns to original position after having pressed key, guarantees that the dynamics pushed every time is consistent with this.
Description
Technical field
The present invention relates to piano tuner technical fields, particularly relate to a kind of piano musical note calibration based on sound string vibration signal
Device and application method.
Background technique
The quality of piano sound quality directly affects the effect of piano performance, and during long-time service, piano is possible to out
The abrasion and mechanical breakdown of existing components, regular relatively sound are the necessary hands for maintaining piano accuracy in pitch, extending piano service life
Section.
Tone color, tone and the loudness of piano are three essential characteristics of musical sound, and wherein frequency spectrum decides the tone color of musical sound, frequency
Rate decides the tone of musical sound, and loudness indicates the playing mode of piano, and affects listener to a great extent to musical sound
The judgement of tone color, but usually not compared with the new piano of sound, it will become tone-deaf in two years, musical note inaccuracy.
However very professional piano tuner is required compared with tone rule, and also fairly expensive compared with the expense of tone rule, to warp
The general average family of Ji condition causes very big burden.In addition, depending on piano during the relatively tone of piano rule
The sensitivity and long-term relatively sound experience to musical note of tuner, while being influenced by psychology, physiology and other objective environments, accidentally
Poor size can also vary with each individual.
In consideration of it, need it is a kind of it is easy for operation, detection accuracy is high, the piano that easily popularizes compared with tone restrain system and
Method reduces objective factor in artificial tuning process to improve piano manufacturer and player to the efficiency of piano tone tuning
It influences, improves and improve the quality of piano.
Summary of the invention
The present invention proposes a kind of piano musical note calibrating installation and application method based on sound string vibration signal, improves piano
Tuning efficiency, improve the quality of piano.
The technical proposal of the invention is realized in this way：
A kind of piano musical note calibrating installation based on sound string vibration signal, including sizing stop and signal pickup assembly, calibration branch
Erection is equipped at two, is provided with ball-screw at two between sizing stop, pair of nut I and pair of nut are provided on ball-screw
II, the outside of pair of nut I are provided with mobile support plate I, and the outside of pair of nut II is provided with mobile support plate II, mobile support plate
It is provided with lower platen on I, towing plate is provided on mobile support plate II, lower platen connects towing plate, lower platen by draught line
Lower part be provided with lower lock block, the signal pickup assembly includes vibrating sensor, and vibrating sensor is located in string fixed column.
It is from top to bottom provided with fixation hole II at two on the link block, is provided with and fixes on the mobile support plate I
The connecting hole of hole II cooperation, bolt are threaded through fixation hole II and connecting hole and are linked together link block and mobile support plate I, institute
It states link block and lower platen is connected by pin shaft, be provided with limit plate on the side wall of link block.
It is from top to bottom provided with fixation hole I at two on the lower platen, is provided on the lower lock block and cooperates with fixation hole I
Connecting hole, bolt is threaded through fixation hole I and lower platen and lower lock block are linked together by connecting hole.
Guide rod is provided at described two between sizing stop, guide rod is by moving in support plate I and mobile support plate II
It passes through.
The pair of nut II, mobile support plate II and towing plate are provided at two, are provided with and are turned between towing plate at two
Axis is provided with winding wheel in the middle part of shaft, and winding wheel connects one end of draught line, and the other end of draught line connects lower platen, leads
Retention bead is provided in the middle part of lead.
Fixing axle is provided at described two between towing plate, telescopic mast is provided in fixing axle, telescopic mast includes fixed column,
Mobile column I and spring I are provided in fixed column, the one end spring I is connected and fixed column, and the other end of spring I connects mobile column I, moves
Mobile column II and spring II are provided in dynamic column I, one end of spring II connects mobile column I, and the other end of spring II connects movement
It is provided with threading portion at the top of column II, mobile column II, threading hole is provided in threading portion, draught line in threading hole by passing through.
The bottom of the lower lock block 34 is provided with rubber sheet gasket.
Bearing I is provided in the sizing stop, the both ends of ball-screw are respectively positioned in bearing I, one end of ball-screw
Motor I is connected, is provided with bearing I I in the towing plate, the both ends of shaft are respectively positioned in bearing I I, and one end of shaft connects electricity
Machine II.
Be provided with fixed plate on the mobile support plate I, one end of the draught line connects lower platen, draught line it is another
End is provided with retention bead in the middle part of fixed plate, draught line.
A kind of application method of the piano musical note calibrating installation based on sound string vibration signal, includes the following steps：
Step 1：The mobile support plate I of the fixation hole II connection of link block upper end, the fixation hole I connection lower lock block of lower platen lower end,
Ball screw turns drive lower platen mobile, and every in moving process to pass through a white key, ball-screw stops operating, under lower lock block
Press contacts white key, lower lock block is raised above after contacting white key, and ball-screw continues to rotate, after driving lower lock block to move forward pushing
One white key has successively pressed all white keys, and vibrating sensor is sequentially output vibration letter according to the vibration of string when pushing white key
Number；
Step 2：The mobile support plate I of the fixation hole II connection of link block lower end, the fixation hole I connection lower lock block of lower platen upper end,
Ball screw turns drive lower platen mobile, and every in moving process to pass through a black key, ball-screw stops operating, under lower lock block
Press contacts black key, lower lock block is raised above after contacting black key, and ball-screw continues to rotate, after driving lower lock block to move forward pushing
One black key has successively pressed all black keys, and vibrating sensor is sequentially output vibration letter according to the vibration of string when pushing black key
Number；
Step 3：Time-domain analysis, autocorrelation analysis are successively carried out to the vibration signal exported in step 1 and step 2, obtain vibration
The amplitude of signal, phase information successively carry out frequency-domain analysis to the vibration signal exported in step 1 and step 2, obtain vibration letter
Number fundamental frequency, harmonics information, and result will be analyzed accordingly in a manner of patterned and shown in display screen；
Step 4：The amplitude of vibration signal, phase information in step 3 are converted to loudness of a sound, the loudness letter of piano sound string to be calibrated
The fundamental frequency of vibration signal, harmonics information in step 3, are converted to the frequency information of piano sound string to be calibrated by breath；
Step 5：The loudness of a sound of the sound string to be calibrated of piano in step 4, loudness information and international standard loudness of a sound, standard loudness are carried out pair
Than analysis, the frequency information of piano sound string to be calibrated is compared with international standard fundamental frequency, and shows on a display screen
Show measured value, standard value and the information for needing calibrator quantity；
Step 6：Tuner temperament operation is carried out to sound string to be calibrated according to the calibrator quantity shown in display screen, until sound string to be calibrated
Loudness of a sound, loudness and fundamental frequency information reach requirement until.
The present invention is provided with lower lock block, pushes key by lower lock block and generates vibration to string, after lower lock block has pressed key
Original position is returned to, guarantees that the dynamics pushed every time is consistent with this, the vibration signal generated after piano to be calibrated and pushing will be pushed
The vibration signal generated after standard piano is compared and analyzed and is exported, and facilitates loudness of a sound, loudness and the base for adjusting piano to be calibrated
Frequency information is allowed to consistent with fundamental frequency information or in certain error range with the loudness of a sound of standard piano, loudness, completes calibration behaviour
Make；This method is not only high-efficient, but also reduces the influence of objective factor in artificial tuning process, improves and improve the matter of piano
Amount.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is main view of the invention；
Fig. 2 is the top view of the embodiment of the present invention 1；
Fig. 3 is A-A cross-sectional view of Fig. 2；
Fig. 4 is that lower platen is pressed onto the schematic diagram on key in Fig. 3；
Fig. 5 is the cross-sectional view of telescopic mast；
Fig. 6 is the top view of the embodiment of the present invention 2；
Fig. 7 is B-B cross-sectional view of Fig. 6；
Fig. 8 is scheme of installation of the signal pickup assembly on string；
Fig. 9 is the amplitude information schematic diagram of the vibration signal obtained after time-domain analysis；
Figure 10 is the fundamental frequency of the vibration signal obtained through frequency-domain analysis, harmonics information schematic diagram；
Figure 11 is the schematic diagram that the frequency information of piano sound string to be calibrated and international standard fundamental frequency are compared.
In figure：1, piano 11, black key 12, white key 13, string fixed plate 14, string 15, sensor fixing clamp 16,
Vibrating sensor 21, sizing stop 22, lower platen 23, towing plate 24, draught line 25, motor I 26, ball-screw 27,
Mobile support plate I 28, mobile support plate II 29, winding wheel 30, shaft 31, guide rod 32, motor II 33, fixation hole I
34, lower lock block 35, link block 36, limit plate 37, pin shaft 38, retention bead 39, pair of nut I 40, fixation hole II 41,
Rubber sheet gasket 42, bearing I 43, bearing I I 44, telescopic mast 45, fixed column 46, mobile column I 47, spring I 48, spring II
49, mobile column II 50, threading portion 51, threading hole 52, fixing axle 53, fixed plate.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained under that premise of not paying creative labor belongs to the model that the present invention protects
It encloses.
Embodiment 1
As shown in Fig. 1-5,8, the embodiment of the invention provides a kind of piano musical note calibrating installation based on sound string vibration signal,
Including sizing stop 21 and signal pickup assembly, sizing stop 21 is provided at two, is provided with rolling at two between sizing stop 21
Ballscrew 26 is provided with pair of nut I39 and pair of nut II on ball-screw 26, and the outside of pair of nut I39 is provided with mobile support
Plate I27, the outside of pair of nut II are provided with mobile support plate II28, and lower platen 22, mobile branch are provided on mobile support plate I27
Towing plate 23 is provided on fagging II28, lower platen 22 connects towing plate 23, the lower part setting of lower platen 22 by draught line 24
There is lower lock block 34, the signal pickup assembly includes vibrating sensor, and vibrating sensor is located in string fixed column 13, conveniently adopts
Collect key in pressing when lower lock block 34 falls, to the vibration information that string 14 generates, the both ends of string 14 are fixed by string
Column 13 is fixed on piano seat.
It is from top to bottom provided with fixation hole II40 at two on the link block 35, is provided on the mobile support plate I27
With the connecting hole of fixation hole II40 cooperation, bolt is threaded through fixation hole II40 and connecting hole for link block 35 and mobile support plate
I27 is linked together, and the link block 35 connects lower platen 22 by pin shaft 37, and lower platen 22 can be when connecting line 24 unclamps certainly
By falling, key is pushed, is provided with limit plate 36 on the side wall of link block 35, for being limited when lower platen 22 falls, so that
The extreme position that lower platen 22 falls is level, and lower lock block 34 just touches key, the whereabouts of lower lock block 34 is prevented to be displaced
Greatly, cause key to be deformed, piano is damaged.
It is from top to bottom provided with fixation hole I33 at two on the lower platen 22, is provided with and fixes on the lower lock block 34
The connecting hole of hole I33 cooperation, bolt are threaded through fixation hole I33 and connecting hole and are linked together lower platen 22 and lower lock block 34,
The longer dimension of white key 12 in piano, the height of black key 11 is higher, when the mobile branch of the fixation hole II40 connection of 35 upper end of link block
Fagging I27, when the fixation hole I33 connection lower lock block 34 of 22 lower end of lower platen, lower lock block 34 falls white key 12 in pressure；Work as link block
The mobile support plate I17 of the fixation hole II40 connections of 35 lower ends, when the fixation hole I33 connection lower lock block 34 of 22 upper end of lower platen, under
Black key 11 in the pressure of the whereabouts of briquetting 34.
Guide rod 31 is provided at described two between sizing stop 21, guide rod 31 is by mobile support plate I27 and mobile branch
It is passed through in fagging II28, so that the moving process of mobile support plate I27 and mobile support plate II28 are flat when ball-screw 26 rotates
It does not shake surely, lower platen 22 pushes key when ball-screw 26 being facilitated to stall.
The pair of nut II, mobile support plate II28 and towing plate 23 are provided at two, are set between towing plate 23 at two
Be equipped with shaft 30, the middle part of shaft 30 is provided with winding wheel 29, and winding wheel 29 connects one end of draught line 24, draught line 24 it is another
One end connects lower platen 22, packs up draught line 24 when winding wheel 29 rotates clockwise, and drives lower platen 22 to move up, winding wheel 29
More than draught line 4 are shaken apart when rotating counterclockwise, lower platen 22 falls naturally under the effect of gravity, pushes piano key；Draught line
24 middle part is provided with retention bead 38, and draught line 24 can not continue to receive when receiving at retention bead 38 during packing up
Line, for fixing the drop-off positions of lower platen 22, so that lower platen 22 when falling is fallen by same position, it is convenient to measurement
Vibration parameters compare；Retention bead 38 by binding be arranged on draught line 24, can be convenient ground shift position, when from
After string is checked in a certain position, position of the retention bead 38 on draught line 24 can be replaced, string is carried out again
Operation is checked, piano string musical note is further adjusted, is allowed to be more nearly standard piano.
Fixing axle 52 is provided at described two between towing plate 23, telescopic mast 44, telescopic mast 44 are provided in fixing axle 52
Including fixed column 45, mobile column I46 and spring I47 are provided in fixed column 45, the one end spring I47 is connected and fixed column 45, spring
The other end of I47 connects mobile column I46, is provided with mobile column II49 and spring II48, one end of spring II48 in mobile column I46
Mobile column I46 is connected, the other end of spring II48 connects mobile column II49, is provided with threading portion 50 at the top of mobile column II49,
Threading hole 51 is provided in threading portion 50, draught line 24 in threading hole 51 by passing through, and telescopic mast 44 is shunk when take-up；It is stretched when unwrapping wire
Contracting column 44 pops up naturally under the action of the spring, so that draught line 24 is in tensioning state always, preventing it from crossing, to ease out existing knotting existing
As influence is tightened again；It is cased with plastic sheet on the inner wall of threading hole 51, draught line 24 is avoided to make when moving back and forth wherein to it
At abrasion.
The bottom of the lower lock block 34 is provided with rubber sheet gasket 41, and when lower press contacts key plays a protective role to key；
Lower lock block 34 is arch, and the finger for simulating player pushes key, so that the string vibration generated can more describe in playing procedure
The string of generation vibrates.
Bearing I 42 is provided in the sizing stop 21, the both ends of ball-screw 26 are respectively positioned in bearing I 42, ball wire
One end of thick stick 26 connects motor I25, is provided with bearing I I43 in the towing plate 23, the both ends of shaft 30 are respectively positioned on bearing I I43
Interior, one end of shaft 30 connects motor II32, drives ball-screw 26 to rotate by motor I25, moves before and after drive lower platen 22
It is dynamic；It drives winding wheel 29 to rotate by motor II32, by take-up and unwrapping wire lower platen 22 is moved up and down.
A kind of application method of the piano musical note calibrating installation based on sound string vibration signal, includes the following steps：
Step 1：The mobile support plate I27 of the fixation hole II40 connection of 35 upper end of link block, the fixation hole I33 company of 22 lower end of lower platen
Lower lock block 34 is connect, the rotation of ball-screw 26 drives lower platen 22 mobile, every in moving process to pass through a white key 12, ball-screw
26 stop operating, and the lower press contacts white key 12 of lower lock block 34, lower lock block 34 is raised above after contacting white key 12, and ball-screw 26 continues
Rotation drives lower lock block 34 to move forward and pushes the latter white key 12, successively pressed all white keys 12, shakes when pushing white key 12
Dynamic sensor 16 is sequentially output vibration signal according to the vibration of string 14；
Step 2：The mobile support plate I17 of the fixation hole II40 connection of 35 lower end of link block, the fixation hole I33 company of 22 upper end of lower platen
Lower lock block 34 is connect, the rotation of ball-screw 26 drives lower platen 22 mobile, every in moving process to pass through a black key 11, ball-screw
26 stop operating, and the lower press contacts black key 11 of lower lock block 34, lower lock block 34 is raised above after contacting black key 11, and ball-screw 26 continues
Rotation drives lower lock block 34 to move forward and pushes the latter black key 11, successively pressed all black keys 11, shakes when pushing black key 11
Dynamic sensor 16 is sequentially output vibration signal according to the vibration of string 14；
Step 3：Time-domain analysis, autocorrelation analysis are successively carried out to the vibration signal exported in step 1 and step 2, obtain vibration
The amplitude of signal, phase information successively carry out frequency-domain analysis to the vibration signal exported in step 1 and step 2, obtain vibration letter
Number fundamental frequency, harmonics information, and result will be analyzed accordingly in a manner of patterned and shown in display screen；
The time-domain analysis is the signal after DSP data processor processes, can obtain mean value, the root mean square of vibration signal
Value, kurtosis value, peak value constant amplitude field parameter, include the following steps：
a）Mean value characterizes the center fluctuation of sound string vibration signal variation, is the constant component of vibration signal, expression formula is：
Wherein,For total sampling number；Indicate the sample function of sound string vibration signal,。
b）Root-mean-square value is that evolution obtains to first square of sound string vibration signal, then after averaged, and expression formula is：
,
c）Kurtosis is a kind of direct reliable parameter for embodying probability density, and expression formula is：
,
d）Peak value is direct embodiment sound string vibration signal waveform maximum value, and expression formula is：
,
By the way that the amplitude information of sound string vibration signal can be obtained to the progress time-domain analysis of sound string vibration signal, as shown in figure 9,
The amplitude information schematic diagram of the vibration signal as obtained after time-domain analysis；
The autocorrelation analysis can extract the phase information of sound string vibration signal, and expression formula is：
Wherein,,For in sound string vibration signal
DC component；For the amplitude of sound string vibration signal fundamental frequency；For the corresponding number frequency of sound Chord vibration under selected sample frequency
Rate；For the phase of sound string vibration signal fundamental frequency；For the amplitude of other frequency vibration signals；For selected sample frequency
Under the corresponding numerical frequency of other frequencies；For the phase of other frequency vibration signals；For interference signal, by sound string
Vibration signal carries out autocorrelation analysis, can obtain the phase information of sound string vibration signal；
The frequency-domain analysis refer to by sound string vibration signal carry out Fourier transformation, obtain sound string vibration signal fundamental frequency,
Harmonics information, as shown in Figure 10, fundamental frequency, the harmonics hum pattern of the vibration signal as obtained through frequency-domain analysis, Fourier become
The expression formula for changing series is：
,
Wherein,,,,。
Step 4：The amplitude of vibration signal, phase information in step 3 are converted to loudness of a sound, the loudness of piano sound string to be calibrated
The fundamental frequency of vibration signal, harmonics information in step 3 are converted to the frequency information of piano sound string to be calibrated by information；
Step 5：The loudness of a sound of the sound string to be calibrated of piano in step 4, loudness information and international standard loudness of a sound, standard loudness are carried out pair
Than analysis, the frequency information of piano sound string to be calibrated is compared with international standard fundamental frequency, and shows on a display screen
Show measured value, standard value and the information for needing calibrator quantity, as shown in figure 11, as by the frequency information of piano sound string to be calibrated
The schematic diagram being compared with international standard fundamental frequency；
Step 6：Tuner temperament operation is carried out to sound string to be calibrated according to the calibrator quantity shown in display screen, until sound string to be calibrated
Loudness of a sound, loudness and fundamental frequency information reach requirement until.
Embodiment 2
As shown in Fig. 6-8, fixed plate 53 is provided on the mobile support plate I27, one end of the draught line 24, which connects, to be pushed
The other end of plate 22, draught line 24 passes through fixed plate 53, and the middle part of draught line 24 is provided with retention bead 38, in this embodiment,
By the manual take-up of operator, unwrapping wire, realizes the pushing of lower platen 22, moves up movement；Operator can also rotate ball manually
Lead screw 26 realizes the back-and-forth motion of lower platen 22, when electric power is insufficient or temporary interruption, can use this embodiment.
The other structures of the present embodiment are the same as embodiment 1.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of piano musical note calibrating installation based on sound string vibration signal, including sizing stop（21）And signal pickup assembly,
It is characterized in that：Sizing stop（21）It is provided at two, sizing stop at two（21）Between be provided with ball-screw（26）, ball
Lead screw（26）On be provided with pair of nut I（39）With pair of nut II, pair of nut I（39）Outside be provided with mobile support plate I（27）,
The outside of pair of nut II is provided with mobile support plate II（28）, mobile support plate I（27）On be provided with lower platen（22）, mobile branch
Fagging II（28）On be provided with towing plate（23）, lower platen（22）Pass through draught line（24）Connect towing plate（23）, lower platen
（22）Lower part be provided with lower lock block（34）, the signal pickup assembly includes vibrating sensor, and vibrating sensor is located at string
Fixed column（13）On.
2. a kind of piano musical note calibrating installation based on sound string vibration signal according to claim 1, it is characterised in that：Institute
State link block（35）On be from top to bottom provided with fixation hole II at two（40）, the mobile support plate I（27）On be provided with and consolidate
Determine hole II（40）The connecting hole of cooperation, bolt are threaded through fixation hole II（40）With connecting hole by link block（35）It is supported with mobile
Plate I（27）It is linked together, the link block（35）Pass through pin shaft（37）Connect lower platen（22）, link block（35）Side wall on set
It is equipped with limit plate（36）.
3. a kind of piano musical note calibrating installation based on sound string vibration signal according to claim 1, it is characterised in that：Institute
State lower platen（22）On be from top to bottom provided with fixation hole I at two（33）, the lower lock block（34）On be provided with and fixation hole I
（33）The connecting hole of cooperation, bolt are threaded through fixation hole I（33）With connecting hole by lower platen（22）And lower lock block（34）It is linked as
One.
4. a kind of piano musical note calibrating installation based on sound string vibration signal according to claim 1, it is characterised in that：Institute
State sizing stop at two（21）Between be provided with guide rod（31）, guide rod（31）By mobile support plate I（27）It is supported with mobile
Plate II（28）Inside pass through.
5. a kind of piano musical note calibrating installation based on sound string vibration signal according to claim 1, it is characterised in that：Institute
State pair of nut II, mobile support plate II（28）And towing plate（23）It is provided at two, towing plate at two（23）Between be provided with
Shaft（30）, shaft（30）Middle part be provided with winding wheel（29）, winding wheel（29）Connect draught line（24）One end, draught line
（24）The other end connect lower platen（22）, draught line（24）Middle part be provided with retention bead（38）.
6. a kind of piano musical note calibrating installation based on sound string vibration signal according to claim 5, it is characterised in that：Institute
State towing plate at two（23）Between be provided with fixing axle（52）, fixing axle（52）On be provided with telescopic mast（44）, telescopic mast（44）
Including fixed column（45）, fixed column（45）Inside it is provided with mobile column I（46）With spring I（47）, spring I（47）One end is connected and fixed
Column（45）, spring I（47）The other end connect mobile column I（46）, mobile column I（46）Inside it is provided with mobile column II（49）And spring
II（48）, spring II（48）One end connect mobile column I（46）, spring II（48）The other end connect mobile column II（49）, move
Dynamic column II（49）Top be provided with threading portion（50）, threading portion（50）On be provided with threading hole（51）, draught line（24）By wearing
String holes（51）Inside pass through.
7. described in any item a kind of piano musical note calibrating installations based on sound string vibration signal according to claim 1-6, special
Sign is：The lower lock block（34）Bottom be provided with rubber sheet gasket（41）.
8. described in any item a kind of piano musical note calibrating installations based on sound string vibration signal according to claim 1-6, special
Sign is：The sizing stop（21）Inside it is provided with bearing I（42）, ball-screw（26）Both ends be respectively positioned on bearing I（42）It is interior,
Ball-screw（26）One end connect motor I（25）, the towing plate（23）Inside it is provided with bearing I I（43）, shaft（30）Two
End is respectively positioned on bearing I I（43）It is interior, shaft（30）One end connect motor II（32）.
9. a kind of piano musical note calibrating installation based on sound string vibration signal according to claim 1, it is characterised in that：Institute
State mobile support plate I（27）On be provided with fixed plate（53）, the draught line（24）One end connect lower platen（22）, draught line
（24）The other end pass through fixed plate（53）, draught line（24）Middle part be provided with retention bead（38）.
10. a kind of application method of the piano musical note calibrating installation based on sound string vibration signal, which is characterized in that including following step
Suddenly：
Step 1：Link block（35）The fixation hole II of upper end（40）Connect mobile support plate I（27）, lower platen（22）Lower end is consolidated
Determine hole I（33）Connect lower lock block（34）, ball-screw（26）Rotation drives lower platen（22）It is mobile, it is every in moving process to pass through one
A white key（12）, ball-screw（26）It stops operating, lower lock block（34）Lower press contacts white key（12）, contact white key（12）After push
Block（34）It is raised above, ball-screw（26）It continues to rotate, drives lower lock block（34）It moves forward and pushes the latter white key（12）,
All white keys are successively pressed（12）, push white key（12）When vibrating sensor（16）According to string（14）Vibration be sequentially output
Vibration signal；
Step 2：Link block（35）The fixation hole II of lower end（40）Connect mobile support plate I（17）, lower platen（22）Upper end is consolidated
Determine hole I（33）Connect lower lock block（34）, ball-screw（26）Rotation drives lower platen（22）It is mobile, it is every in moving process to pass through one
A black key（11）, ball-screw（26）It stops operating, lower lock block（34）Lower press contacts black key（11）, contact black key（11）After push
Block（34）It is raised above, ball-screw（26）It continues to rotate, drives lower lock block（34）It moves forward and pushes the latter black key（11）,
All black keys are successively pressed（11）, push black key（11）When vibrating sensor（16）According to string（14）Vibration be sequentially output
Vibration signal；
Step 3：To step（1）And step（2）The vibration signal of middle output successively carries out time-domain analysis, autocorrelation analysis, obtains
The amplitude of vibration signal, phase information, to step（1）And step（2）The vibration signal of middle output successively carries out frequency-domain analysis, obtains
The fundamental frequency of vibration signal, harmonics information out, and result will be analyzed accordingly in a manner of patterned and shown in display screen；
Step 4：By step（3）The amplitude of middle vibration signal, phase information are converted to the loudness of a sound of piano sound string to be calibrated, loudness letter
Breath, by step（3）The fundamental frequency of middle vibration signal, harmonics information are converted to the frequency information of piano sound string to be calibrated；
Step 5：By step（4）Loudness of a sound, loudness information and the international standard loudness of a sound of middle piano sound string to be calibrated, standard loudness carry out
The frequency information of piano sound string to be calibrated is compared with international standard fundamental frequency for comparative analysis, and on a display screen
Show measured value, standard value and the information for needing calibrator quantity；
Step 6：Tuner temperament operation is carried out to sound string to be calibrated according to the calibrator quantity shown in display screen, until sound string to be calibrated
Loudness of a sound, loudness and fundamental frequency information reach requirement until.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810364927.1A CN108877743B (en) | 2018-04-23 | 2018-04-23 | Piano temperament calibration device based on string vibration signals and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810364927.1A CN108877743B (en) | 2018-04-23 | 2018-04-23 | Piano temperament calibration device based on string vibration signals and use method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108877743A true CN108877743A (en) | 2018-11-23 |
| CN108877743B CN108877743B (en) | 2023-01-10 |
Family
ID=64327162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810364927.1A Active CN108877743B (en) | 2018-04-23 | 2018-04-23 | Piano temperament calibration device based on string vibration signals and use method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108877743B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109685812A (en) * | 2018-12-25 | 2019-04-26 | 宁波迪比亿贸易有限公司 | Site environment maintenance mechanism |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB224979A (en) * | 1923-08-29 | 1924-11-27 | John Lawler | An improved mechanical player for pianofortes and like musical instruments |
| EP0294717A2 (en) * | 1987-06-09 | 1988-12-14 | Andreas Dipl.-Ing. Dorner | Key force-distance ratio measuring device for keybord intruments |
| JPH05313657A (en) * | 1992-05-13 | 1993-11-26 | Yamaha Corp | Tuning unit |
| CN1220440A (en) * | 1997-12-18 | 1999-06-23 | 周向进 | Temperament standard generator for piano |
| JP2001195072A (en) * | 1999-10-26 | 2001-07-19 | Kawai Musical Instr Mfg Co Ltd | Correction device and correction method for keyboard sensor |
| US6559369B1 (en) * | 2002-01-14 | 2003-05-06 | Donald A. Gilmore | Apparatus and method for self-tuning a piano |
| JP2004294837A (en) * | 2003-03-27 | 2004-10-21 | Kawai Musical Instr Mfg Co Ltd | Electronic piano |
| CN102270447A (en) * | 2011-08-30 | 2011-12-07 | 李忠孝 | Piano tone tuning detection device and implementation method thereof |
| CN104835485A (en) * | 2015-04-08 | 2015-08-12 | 华平信息技术股份有限公司 | Piano sampling and playing device, and key calibration method thereof, and key signal sampling method |
| CN104952428A (en) * | 2014-03-25 | 2015-09-30 | 新昌县鸿裕工业产品设计有限公司 | Programmable mechanical beating component for piano |
| CN204791919U (en) * | 2015-07-27 | 2015-11-18 | 内蒙古民族大学 | Mechanical type piano tuning ware |
| CN106652973A (en) * | 2015-10-29 | 2017-05-10 | 顾俊豪 | Full-automatic piano tuner and system |
| CN107039048A (en) * | 2017-04-01 | 2017-08-11 | 华东交通大学 | A kind of piano soundboard acoustic quality comprehensive evaluating method |
| CN107146597A (en) * | 2016-08-02 | 2017-09-08 | 浙江大学 | A kind of self-service tuning system of piano and tuning method |
-
2018
- 2018-04-23 CN CN201810364927.1A patent/CN108877743B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB224979A (en) * | 1923-08-29 | 1924-11-27 | John Lawler | An improved mechanical player for pianofortes and like musical instruments |
| EP0294717A2 (en) * | 1987-06-09 | 1988-12-14 | Andreas Dipl.-Ing. Dorner | Key force-distance ratio measuring device for keybord intruments |
| JPH05313657A (en) * | 1992-05-13 | 1993-11-26 | Yamaha Corp | Tuning unit |
| CN1220440A (en) * | 1997-12-18 | 1999-06-23 | 周向进 | Temperament standard generator for piano |
| JP2001195072A (en) * | 1999-10-26 | 2001-07-19 | Kawai Musical Instr Mfg Co Ltd | Correction device and correction method for keyboard sensor |
| US6559369B1 (en) * | 2002-01-14 | 2003-05-06 | Donald A. Gilmore | Apparatus and method for self-tuning a piano |
| JP2004294837A (en) * | 2003-03-27 | 2004-10-21 | Kawai Musical Instr Mfg Co Ltd | Electronic piano |
| CN102270447A (en) * | 2011-08-30 | 2011-12-07 | 李忠孝 | Piano tone tuning detection device and implementation method thereof |
| CN104952428A (en) * | 2014-03-25 | 2015-09-30 | 新昌县鸿裕工业产品设计有限公司 | Programmable mechanical beating component for piano |
| CN104835485A (en) * | 2015-04-08 | 2015-08-12 | 华平信息技术股份有限公司 | Piano sampling and playing device, and key calibration method thereof, and key signal sampling method |
| CN204791919U (en) * | 2015-07-27 | 2015-11-18 | 内蒙古民族大学 | Mechanical type piano tuning ware |
| CN106652973A (en) * | 2015-10-29 | 2017-05-10 | 顾俊豪 | Full-automatic piano tuner and system |
| CN107146597A (en) * | 2016-08-02 | 2017-09-08 | 浙江大学 | A kind of self-service tuning system of piano and tuning method |
| CN107039048A (en) * | 2017-04-01 | 2017-08-11 | 华东交通大学 | A kind of piano soundboard acoustic quality comprehensive evaluating method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109685812A (en) * | 2018-12-25 | 2019-04-26 | 宁波迪比亿贸易有限公司 | Site environment maintenance mechanism |
| CN109685812B (en) * | 2018-12-25 | 2020-10-16 | 义乌市诠铈新材料有限公司 | On-site environment maintenance mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108877743B (en) | 2023-01-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9076416B2 (en) | Polyphonic tuner | |
| US6415584B1 (en) | Tuning means for tuning stringed instruments, a guitar comprising tuning means and a method of tuning stringed instruments | |
| JP2875805B2 (en) | Automatic tuning of musical instruments | |
| US5767429A (en) | Automatic string instrument tuner | |
| JP5190567B2 (en) | Timpani with a fast, accurate and programmable tuning system | |
| US8440897B1 (en) | Guitar with high speed, closed-loop tension control | |
| US20150047493A1 (en) | Automatic Tuning Devices and Methods | |
| CN108877743A (en) | A kind of piano musical note calibrating installation and application method based on sound string vibration signal | |
| CN201336131Y (en) | Automatic tuner for piano | |
| CN206709868U (en) | A kind of detection device with all-directional rotation fixture | |
| CN209266006U (en) | A kind of stringed musical instrument tuning system | |
| US5442987A (en) | Apparatus to vary the pitch of a designated string of a musical instrument | |
| CN109192183A (en) | The tuning method and stringed musical instrument of stringed musical instrument | |
| CN209199587U (en) | A kind of bridge and play kind musical instrument | |
| CN209055210U (en) | A kind of piano string detection device | |
| CN116135487A (en) | Musical instrument playing robot control method and musical instrument playing robot | |
| CN207676629U (en) | A kind of automatic chord regulating device of guitar | |
| CN208368128U (en) | A kind of piano sound apparatus for correcting | |
| JP4343780B2 (en) | Tuning device, tuning method | |
| EP0901616B1 (en) | Apparatus and method for measuring the tension of spokes mounted in a wheel and apparatus and method for straightening spoked wheels | |
| CN108847202A (en) | A kind of intelligent tuning for Chinese lute and fixed device | |
| CN220230717U (en) | Violin code vibration detection device with anti-offset structure | |
| CN116013223A (en) | Piano rhythm calibration device and use method | |
| CN207662625U (en) | A kind of wind-driven generator test fixed frame tooling | |
| CN210223523U (en) | Piano tone correction device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |