CN107146497A - A kind of piano test for confirmation of the grade points-scoring system - Google Patents
A kind of piano test for confirmation of the grade points-scoring system Download PDFInfo
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- CN107146497A CN107146497A CN201610627032.3A CN201610627032A CN107146497A CN 107146497 A CN107146497 A CN 107146497A CN 201610627032 A CN201610627032 A CN 201610627032A CN 107146497 A CN107146497 A CN 107146497A
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- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B15/00—Teaching music
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
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Abstract
The present invention provides a kind of piano test for confirmation of the grade points-scoring system, described points-scoring system of examining for the levels is by receiving the audio signal of piano, given a mark respectively in terms of the accuracy, song integrality, tone color expressive force of pitch and rhythm according to the audio signal and overall merit marking, aid in piano study and examine for the levels, described points-scoring system of examining for the levels includes song selecting unit, signal receiving unit, information extraction unit, performance scoring unit, report output unit.The song selecting unit is used for the song for selecting to carry out playing scoring；The signal receiving unit receives the audio signal played；Described information extraction unit extracts the playing information of the audio signal, and passes to performance scoring unit；The scoring unit of playing contrasts the song that described playing information and song selecting unit are selected, and calculates appraisal result；The report output unit generation scoring is reported and exported.Tone color expressive force is included evaluation criterion by the present invention, can be used for the scoring of examining for the levels of piano.
Description
Technical field
The present invention relates to a kind of musical instrument field, more particularly to a kind of piano test for confirmation of the grade points-scoring system.
Background technology
Music can purify the soul of the mankind, wash the soul of the mankind, can open the gate of the wisdom of humanity.Numerous
In musical instrument, piano as one of popular favorite musical instrument, is referred to as " king of musical instrument " with its numerous superiority.Piano has
There is following advantage：(1) range is broad, and 88 keys of piano almost contain the musical sound used in musical life；(2) table
Existing power is enriched, and piano dynamics can play out different tone colors from ppp (most weak) to fff (most strong), can express various each
The mood and emotion of sample；(3) piano is frequently used for classroom instruction, vocal music, dancing accompaniment etc., is that the most frequently used, effect is best
Music teaching instrument；(4) study piano is the basis for learning other musical instruments, particularly keyboard instrument, such as accordion, electronic organ,
Organ etc.；(5) study piano is the basis for learning other music knowledges, particularly music theory, harmony, product analysis, musical composition
Deng；(6) study piano is one of best means of children's early stage music education, and since many music talents learning piano.
Therefore, piano as learning music bridge, increasing people study piano be used as oneself hobby or one
The technology of specialty/sparetime.
Traditional piano study needs piano teacher that please be professional to be instructed, and not only study costs is expensive, and due to
Time and the limitation of steric requirements, it is impossible to meet the demand that piano teacher is instructed on side at any time in piano.Piano
Learner carry out piano study when the performance level of oneself can not be investigated in real time according to situation of playing each time；
Prepare when examining for the levels of piano, it is impossible to which the situation according to playing provides an objective appraisal, simulate the scoring of piano test for confirmation of the grade, produce
Auxiliary piano study and the demand examined for the levels.
With the development of science and technology, requirement more and more higher of the people for piano study equipment, piano can be aided in by occurring in that
The equipment of study.Such as patent CN104036766A has invented a kind of intelligent piano and system, and the motion of key is detected when playing
Situation, such performance data is converted to by the motor message of the key detected, and music data and such performance data are compared into reality
Existing error correction and scoring.Such a error correction methods of marking need the button or other positions in piano install corresponding sensor or other
Equipment, obtains the data of performance, with limitation by detecting the moving situation of key.
In addition, existing musical instrument methods of marking can only carry out error correction scoring to data such as pitch, the rhythm of performance, not
The musical expression of performance can be evaluated.
The performance of music refers to when playing an instrument, in addition to the note that finger is ejected, return player and hearer with
The one kind " thing " come, it is present between musical sound, and simple musical sound is not exclusively the one thing.Its specific manifestation is exactly people
Described aesthetic feeling, emotion, mood, sentiment, association, the imagination, music artistic conception, musical image, and music language, music patrol
Volume, music thinking, music intonation, music connotation, music entertaining, music charm, music philosophic theory, music style etc., it is every by finding pleasure in
Our psychological any types that sound is attracted, any aspect are sensed, experienced, and can all be included among the category of musical.
Popular says, plays the musical instrument and more than merely ejects sound, outside sound, while what also to have felt, has brought hearer
What, has this " what ", just there is musical.Such as, composer has write the melody of a first performance grand spectacle, we
Also it is grand to have felt music, thus can show convincing, must even not understand fully be sea grandness, the hero of high mountain
It is big, or grandness, the grandness of great rivers greatly.Certainly, if composer is intended that the grandness for describing ocean, we are also proper
Feel well be ocean grandness, certainly, at this moment our musical just more suits the artistic conception of music.
Musical expression is very important part in the performance of musical instrument, is referred to when playing a musical works,
Emotion, artistic conception that works to be expressed can be shown.In the requirement of examining for the levels of piano, clearly list on music table
The requirement of existing power, is described in detail below：Music content can be correctly expressed, the style characteristic of melody is held exactly, there is stronger
Musical expression.The expressive force of music is usually lain among tone color in performance.Therefore in the scoring played and examine for the levels
Scoring in, tone color expressive force is a very important investigation item.But have no be included in tone color expressive force in the prior art
System, method or equipment in standards of grading.
The content of the invention
In view of the shortcomings of the prior art, the present invention provides a kind of piano test for confirmation of the grade points-scoring system.
The present invention needs to detect fingerboard moving situation for prior art, in scoring not by tone color expressive force bag
The problem of being contained in standards of grading, have invented a kind of piano test for confirmation of the grade points-scoring system, described piano test for confirmation of the grade points-scoring system is by connecing
The audio signal for receiving piano playing is showed in the accuracy, song integrality, tone color of pitch and rhythm the audio signal of performance
Carry out evaluating marking and overall merit marking respectively in terms of power, tone color expressive force is included into evaluation criterion, more meets piano study
With the requirement examined for the levels.
The present invention is adopted the following technical scheme that：
A kind of piano test for confirmation of the grade points-scoring system, described points-scoring system of examining for the levels is by receiving the audio signal of piano, root
Given a mark respectively and comprehensive in terms of the accuracy, song integrality, tone color expressive force of pitch and rhythm according to the audio signal
Close and evaluate marking, aid in piano study and examine for the levels, described points-scoring system of examining for the levels receives single including song selecting unit, signal
Member, information extraction unit, performance scoring unit, report output unit, wherein：Described song selecting unit is used to select to carry out
Play the song of scoring；Described signal receiving unit is used to receive the audio signal played；Described information extraction unit is used
In the playing information of the extraction audio signal, and pass to performance scoring unit；Described performance judge paper member is according to described
Playing information, the song selected with the song selecting unit contrasts, pitch and rhythm to the audio signal it is accurate
Property, song integrality, tone color expressive force and general performance are evaluated, and calculate appraisal result；Described report output unit
For being reported and being exported according to the appraisal result generation scoring for playing the unit that scores.
Further, described points-scoring system of examining for the levels still further comprises communication unit, and described communication unit is used for institute
State interacting for piano test for confirmation of the grade points-scoring system and other equipment and/or network.
Described other equipment refers to any one equipment in addition to itself, can be another piano test for confirmation of the grade scoring system
System or any one equipment or system with interactive function, for example mobile phone, tablet personal computer, intelligent watch, microphone,
Sound equipment etc., described interactive mode can be wired side that the tangible medias such as traditional utilization plain conductor, optical fiber transmit information
Formula or the wireless mode that information is not transmitted by tangible media, such as bluetooth, wifi, 2G, 2.5G, 2.75G, 3G, 4G
Communication mode (more than 4G version) of communication mode and suceeding generation etc.；Described network includes internet and Internet of Things, both wraps
Interacting for system and high in the clouds is included, also the interacting by network and other equipment including system.
Further, described communication mode is selected from two kinds of wired mode and/or wireless mode.
Described wired mode and/or wireless mode refers to that communication is selected from wired mode, wireless mode, wired mode and nothing
Line mode.Described wired mode refers to that the tangible medias such as traditional utilization plain conductor, optical fiber transmit the mode of information, described
Wireless mode refer to not tangible media transmit information by way of, selected from bluetooth, wifi, 2G, 2.5G, 2.75G, 3G, 4G,
In the communication mode (version for including more than 5G) of 5G communication modes and suceeding generation any one or it is any a variety of.
Further, described piano points-scoring system still further comprises social shares unit and/or on-line study unit,
Wherein, described social shares unit is used to realize that scoring report is shared, circle of friends ranking, study notes are exchanged；It is described
Line unit is used for the download and upload for realizing education resource.
Described social shares unit and/or on-line study unit refers to that described piano points-scoring system can be wrapped further
Social shares unit is included, or further comprises on-line study unit, or further comprises social shares unit and on-line study list
Member.Described social shares unit and/or on-line study unit need communication unit carry out the piano test for confirmation of the grade points-scoring system with
The interaction of other equipment and/or network.
Further, the piano test for confirmation of the grade points-scoring system of any form as previously described, the song of the performance scoring comes
Source mode is selected from any one following or any a variety of：
Mode one：The song stored using internal system；
Mode two：The song downloaded by network；
Mode three：The song imported by external equipment.
Further, the piano test for confirmation of the grade points-scoring system of any form, described information extraction unit pair as previously described
The audio signal carries out noise reduction pretreatment, and is analyzed according to the time-domain information and frequency domain information of the audio signal, carries
Take the playing information of the audio signal；Starting point, pitch, duration, loudness, the tone color that described playing information includes note are special
Reference ceases.
The extraction of the playing information, analyzes each sound according to the time-domain information of the audio signal and frequency domain information first
The starting point of symbol, extracts single note, and the pitch of the fundamental frequency of the note, i.e. note is analyzed further according to frequency domain information, calculates
The duration of note, the loudness information and tamber characteristic information of note are calculated according to the time-domain information of note and frequency domain information.
Described fundamental frequency refers to the frequency of fundamental tone, fundamental tone refer to sound that sounding body body vibration produces (vibration length is bigger,
Frequency is smaller), fundamental tone determines pitch.
Further, the piano test for confirmation of the grade points-scoring system of any form, described performance scoring unit bag as previously described
Include pitch accuracy grading module, rhythm accuracy grading module, song integrality grading module, tone color expressive force scoring mould
Described note pitch information and the song are selected single by block, comprehensive grading module, described pitch accuracy grading module
The note pitch information of member selection song is contrasted, and carries out the scoring of pitch accuracy；Described rhythm accuracy scoring mould
Block by described note starting point and duration information and the song selecting unit select song note starting point and when long letter
Breath is contrasted, and carries out the scoring of rhythm accuracy；Described song integrality grading module is according to the audio signal and institute
Note pitch, starting point, the matching degree of duration that song selecting unit selects song are stated, the integrality that song is completed is carried out
Scoring；Described tone color expressive force grading module selects the note of song according to the audio signal and the song selecting unit
The matching degree of loudness and tamber characteristic information, carries out the scoring of tone color expressive force；Described comprehensive grading module is according to described
Pitch accuracy, rhythm accuracy, song integrality, the tone color expressive force of audio-frequency information score general performance.
Further, the piano test for confirmation of the grade points-scoring system of any form, described tone color expressive force scoring as previously described
Loudness and tamber characteristic information of the module in the playing information are scored, and described tamber characteristic information is according to described
The time-domain information and frequency domain information of audio signal are calculated and obtained, including the frequency multiplication and the amplitude of frequency multiplication of each note, fundamental frequency and again
The ratio of frequency amplitude.
Described frequency multiplication refers to the integer multiple frequency of fundamental frequency, is also harmonic frequency, and described partials refer to pronounce body portion
The sound produced, also referred to as overtone are vibrated, homophonic number and each homophonic characteristic (such as frequency distribution, relative intensity) determine sound
Color.
The standards of grading of the pitch accuracy grading module are as follows, 100 points of total score：
Pitch accuracy fraction
Wherein, A is the correct note number of pitch, and N is total note number.
When pitch information and the standard frequency deviation that information extraction unit is provided within the specific limits when, then judgement is played
Note pitch is correct；Otherwise, the note pitch mistake played is judged.Described standard frequency refers to 88 each keys of key on piano
Corresponding standard frequency, such as a1Corresponding standard frequency is 440Hz.
The criterion of the rhythm accuracy grading module is as follows, 100 points of total score：
Rhythm accuracy fraction
Wherein, B is the correct note number of rhythm, and N is total note number.
According to the note duration information of the audio-frequency information, the ratio of the duration of a sound of each note and first note is calculated
It is worth, the ratio of each note of the selected song of contrast and the duration of a sound (i.e. umber of beats) of first note, if both are consistent or inclined
Difference within the specific limits, then judges that the rhythm of the note is correct；Otherwise, the note pitch mistake played is judged.
The criterion of the song integrality grading module is as follows, 100 points of total score：
Song integrality fraction
Wherein, A is the correct note number of pitch, and B is the correct note number of rhythm, and C is that pitch is correct and rhythm is correct
Note number, N is total note number, α1For pitch is correct and the correct item of rhythm shared by specific gravity factor, β1For the correct item institute of pitch
The specific gravity factor accounted for, γ1For the specific gravity factor shared by the correct item of rhythm, the relation of three term coefficients meets α1+β1+γ1=1.
The tone color expressive force module standards of grading are as follows, 100 points of total score：
Tone color expressive force fraction S4=α2S3+(β2X+γ2Y)×100
Wherein, S3For song integrality fraction, X is loudness matching degree, and Y is tamber characteristic matching degree, α2For song integrality
Specific gravity factor shared by fraction, β2For the specific gravity factor shared by loudness matching degree, γ2It is shared for tamber characteristic matching degree
Specific gravity factor, three term coefficients meet α2+β2+γ2=1.
Described loudness matching degree X evaluation criterion is loudness and the matching degree of force mark in song, described power
Spend mark include most weak (ppp), very weak (pp), weak (p), in weak (mp), in strong (mf), strong (f), very strong (ff), most strong
(fff), crescendo (cresc./<), diminuendo (dim/>), it is strong after i.e. weak (fp) etc..
Described tamber characteristic matching degree Y evaluation criterion be the note have abundant frequency multiplication (fundamental frequency integral multiple
Frequency), the ratio of frequency multiplication and fundamental frequency amplitude is not less than a certain threshold value, it is preferred that threshold value is set to 0.1.
The standards of grading of the comprehensive grading module are as follows, and total score is 100 points：
Composite score S=aS1+bS2+cS3+dS4
Wherein, S1For pitch accuracy fraction, S2For rhythm accuracy fraction, S3For song integrality fraction, S1For tone color
Expressive force fraction.A is the specific gravity factor shared by pitch accuracy fraction, and b is the proportion system shared by rhythm accuracy fraction
Number, c is the specific gravity factor shared by song integrality, and d is the specific gravity factor shared by song integrality, and each term coefficient meets a+
B+c+d=1.
Further, the piano test for confirmation of the grade points-scoring system of any form as previously described, described scoring report is selected from total
Body reports and/or detailed report that described summary report includes note error rate and scoring, rhythm scoring, song integrality are commented
Divide, tone color expressive force scores, comprehensive grading, described detailed report includes the content of summary report, the mistake of note pitch
Number and errors present, the number of errors of rhythm and errors present.
Described summary report and/or detailed report refers to described scoring report selected from summary report, detailed report, total
Body is reported and detailed report.
Further, the piano test for confirmation of the grade points-scoring system of any form, described tone color expressive force scoring as previously described
Meet formulaWherein, coefficient meets constraint α1+β1+γ1
=1, α2+β2+γ2=1, A are the correct note number of pitch, and B is the correct note number of rhythm, and C is pitch, the correct note of rhythm
Number, N is note sum, and X is note loudness matching degree, and Y is tamber characteristic information matches degree.
Second object of the present invention is to provide a kind of piano test for confirmation of the grade methods of marking, and described methods of marking of examining for the levels is by connecing
The audio signal of piano is received, the accuracy, song integrality, tone color according to the audio signal in pitch and rhythm are showed
Power aspect carries out marking and overall merit marking respectively, aids in piano study and examines for the levels, and described methods of marking of examining for the levels is included such as
Lower step：
(1) song that carry out playing scoring is selected by song selecting unit；
(2) audio signal played is received using signal receiving unit；
(3) playing information of the audio signal is extracted by information extraction unit, and passes to performance scoring unit；
(4) judge paper member is played according to described playing information, and the song selected with the song selecting unit is contrasted, right
The pitch of the audio signal and the accuracy of rhythm, song integrality, tone color expressive force and general performance are evaluated, and are calculated
Go out appraisal result；
(5) report output unit is reported and exported according to the appraisal result generation scoring for playing the unit that scores.
Further, also further step and/or on-line study step are shared in bag social activity to described methods of marking of examining for the levels, its
In, realize that scoring report is shared, circle of friends ranking, study notes are exchanged by social shares unit；Pass through on-line study unit
Realize the download and upload of education resource.
The beneficial effects of the invention are as follows：
1. the piano test for confirmation of the grade points-scoring system that the present invention is provided is directed to prior art in scoring not by tone color expressive force bag
The problem of being contained in standards of grading, the audio signal to performance is showed in the accuracy, song integrality, tone color of pitch and rhythm
Carry out evaluating marking and overall merit marking respectively in terms of power, tone color expressive force is included into evaluation criterion, more meets piano study
With the requirement examined for the levels.
2. the piano test for confirmation of the grade points-scoring system that the present invention is provided is commented performance by receiving the audio signal of piano playing
Valency and marking, it is not necessary to detect fingerboard moving situation, it is not necessary to which the keyboard or placement elsewhere on piano are corresponding
Sensor device, it is more convenient, flexible.
3. the piano test for confirmation of the grade points-scoring system that the present invention is provided is in the accuracy, song integrality, tone color table of pitch and rhythm
Carry out evaluating marking and overall merit marking respectively in terms of existing power, be related to all items that piano test for confirmation of the grade is investigated, can aid in
The study of piano, can be used in examining for the levels for piano.
Brief description of the drawings
Fig. 1 is the composition frame chart of piano test for confirmation of the grade points-scoring system of the present invention；
Fig. 2 is the music score schematic diagram of song in the embodiment of the present invention；
The audio signal schematic diagram that Fig. 3 receives for signal receiving unit in the embodiment of the present invention.
Embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, with reference to specific embodiment specifically
The bright present invention.Specific embodiment is described below to simplify the present invention.It should be recognized that the present invention be not limited to it is illustrated
Embodiment, and on the premise of general principle is not departed from, various modifications of the invention are possible, and these equivalent form of values are same
Sample falls within the application appended claims limited range.
In description and claims of this specification, " A and/or B " refer to or A or B or A and B term.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The present invention can be presented in a variety of manners, an example explained below.
Piano test for confirmation of the grade points-scoring system described in the present embodiment includes song selecting unit 101, signal receiving unit 102, letter
Cease extraction unit 103, play scoring unit 104, report output unit 105.Fig. 1 is the group of piano test for confirmation of the grade points-scoring system of the present invention
Into block diagram.Wherein, described song selecting unit is used for the song for selecting to carry out playing scoring；Described signal receiving unit is used
In the audio signal for receiving performance；Described information extraction unit is used for the playing information for extracting the audio signal, and transmits
Give performance scoring unit；Described plays judge paper member according to described playing information, is selected with the song selecting unit
Song is contrasted, and accuracy, song integrality, tone color expressive force and the general performance of pitch and rhythm to the audio signal are entered
Row is evaluated, and calculates appraisal result；Described report output unit is used to be commented according to the appraisal result generation for playing the unit that scores
Divide and report and export.
The piano test for confirmation of the grade points-scoring system of the present embodiment also includes social shares unit and on-line study unit, described social activity
Shares unit is used to realize that scoring report is shared, circle of friends ranking, study notes are exchanged；Described on-line study unit is used for real
The download and upload of existing education resource.
The piano test for confirmation of the grade points-scoring system of the present invention needs as follows when being scored：
Step one：The song that carry out playing scoring is selected by song selecting unit.
The piano one-level of the present embodiment selection internal system storage is examined for the levels song《Toy》Carry out performance scoring, the pleasure of song
Compose schematic diagram as shown in Figure 2.
Step 2：The audio signal played is received using signal receiving unit.
Examined for the levels song according to music score playing piano one-level on piano《Toy》, the audio letter that signal receiving unit is received
Number as shown in Figure 3.
Step 3：The playing information of the audio signal is extracted by information extraction unit, and passes to performance judge paper
Member.
Further, information extraction unit carries out noise reduction pretreatment to the audio signal, and by the audio signal
Time-domain information obtains the frequency domain information of the audio signal by Fourier transformation, is divided according to time-domain information and frequency domain information
Analysis, extracts the playing information of the audio signal.The starting point of described playing information including note, pitch, duration, loudness,
Tamber characteristic information.
Further, described tamber characteristic information is calculated according to the time-domain information and frequency domain information of the audio signal
Arrive, include frequency multiplication and the amplitude of frequency multiplication, the ratio of fundamental frequency and frequency multiplication amplitude of each note.
Information extraction unit calculates complete audio signal by processing the starting point of each note, extracts single
Note, calculate note duration, the fundamental frequency of note is extracted by normalized auto-correlation function method, the sound of note is used as
It is high.To audio signal s (n), n≤N, n ∈ N+, normalized auto-correlation function is as follows：
Wherein, s (n+k) is the adjacent audio signals of s (n) (time delay is k), and time delay is set to the integral multiple of pitch period,
The loudness information of note is obtained according to the time-domain information of the audio signal.
Step 4：Judge paper member is played according to described playing information, the song pair selected with the song selecting unit
Than accuracy, song integrality, tone color expressive force and the general performance of pitch and rhythm to the audio signal are commented
Valency, calculates appraisal result；
Further, described performance scoring unit include pitch accuracy grading module, rhythm accuracy grading module,
Song integrality grading module, tone color expressive force grading module, comprehensive grading module, described pitch accuracy grading module will
Described note pitch information selects the note pitch information of song to be contrasted with the song selecting unit, carries out pitch accurate
The scoring of true property；Described rhythm accuracy grading module selects described note starting point and duration information with the song
The note starting point and duration information of Unit selection song are contrasted, and carry out the scoring of rhythm accuracy；Described song is complete
Whole property grading module selects the note pitch, starting point, duration of song according to the audio signal and the song selecting unit
Matching degree, to song complete integrality score；Described tone color expressive force grading module is believed according to the audio
Number with the song selecting unit select song note loudness and tamber characteristic information matching degree, carry out tone color expressive force
Scoring；Described comprehensive grading module according to the pitch accuracy of the audio-frequency information, rhythm accuracy, song integrality,
Tone color expressive force scores general performance.
The pitch of the pitch information and selected song of playing the note that judge paper primitive root is provided according to information extraction unit is believed
Breath contrast.By taking first to fourth trifle as an example, the corresponding note pitch information of this example song as shown in Figure 2 is sequentially
(two parts are carried out simultaneously) is respectively e2、g2、d2、g2、c2、g2、a1、g1(the first trifle), e2、g2、d2、g2、c2、a1、g1(the
Two trifles), e2、g2、d2、g2、c2、g2、a1、g1(the 3rd trifle), e2、g2、d2、g2、c2(the 4th trifle).
The criterion of pitch accuracy grading module is as follows：
One note pitch of each key correspondence of 88 keys, one standard frequency of correspondence, such as a on piano1Corresponding standard frequency
Rate is 440Hz, correspondence pitch e2Standard frequency be 659.26Hz.The pitch information and standard frequency provided when information extraction unit
Rate deviation within the specific limits when, then judge that the note pitch played is correct；Otherwise, the note pitch mistake played is judged.
The standards of grading of pitch accuracy grading module are as follows, 100 points of total score：
Pitch accuracy fraction
Wherein, A is the correct note number of pitch, and N is total note number.
The criterion of rhythm accuracy grading module is as follows：
According to the note duration information of the audio-frequency information, the ratio of the duration of a sound of each note and first note is calculated
It is worth, the ratio of each note of the selected song of contrast and the duration of a sound (i.e. umber of beats) of first note, if both are consistent or inclined
Difference within the specific limits, then judges that the rhythm of the note is correct；Otherwise, the note pitch mistake played is judged.
Rhythm accuracy grading module standards of grading are as follows, 100 points of total score：
Rhythm accuracy fraction
Wherein, B is the correct note number of rhythm, and N is total note number.
The criterion of song integrality grading module is as follows, 100 points of total score：
Song integrality fraction
Wherein, A is the correct note number of pitch, and B is the correct note number of rhythm, and C is that pitch is correct and rhythm is correct
Note number, N is total note number.
Tone color expressive force module standards of grading are as follows, 100 points of total score：
Tone color expressive force fraction S4=0.4 × S3+(0.3×X+0.3×Y)×100
Wherein, S3For song integrality fraction, X is loudness matching degree, and Y is tamber characteristic matching degree.Loudness matching degree X's
Evaluation criterion is the matching degree of force mark in loudness and song, and described force mark includes most weak (ppp), very weak
(pp), weak (p), in weak (mp), in strong (mf), strong (f), very strong (ff), most strong (fff), crescendo (cresc./<), diminuendo
(dim/>), it is strong after i.e. weak (fp) etc..For example meet the 7th trifle loudness crescendo in the present embodiment such as Fig. 2 song, the 8th is small
Save loudness diminuendo, the 12nd trifle loudness crescendo etc..Described tamber characteristic matching degree Y evaluation criterion is that the note has
Abundant frequency multiplication (frequency of fundamental frequency integral multiple), the ratio of frequency multiplication and fundamental frequency amplitude is not less than a certain threshold value, it is preferred that threshold value is set
For 0.1.
The standards of grading of comprehensive grading module are as follows, and total score is 100 points：
Composite score S=0.25 × S1+0.2×S2+0.35×S3+0.2×S4
Wherein, S1For pitch accuracy fraction, S2For rhythm accuracy fraction, S3For song integrality fraction, S1For tone color
Expressive force fraction.
Step 5：Report output unit is reported and exported according to the appraisal result generation scoring for playing the unit that scores.
Further, the scoring report in this example includes summary report and detailed report, and described summary report includes
Note error rate and scoring, rhythm scoring, the scoring of song integrality, the scoring of tone color expressive force, comprehensive grading, described detailed report
Announcement includes the content of summary report, the number of errors of note pitch and errors present, the number of errors of rhythm and errors present.
Step 6：It will be scored by social shares unit and report that sharing the social activity such as qq, wechat, microblogging with study notes puts down
Platform.
Step 7：The upload and download of education resource are carried out by on-line study unit.Learn piano in online obtain
Video resource and music score, carry out the upload of self-study resource.
Claims (10)
1. a kind of piano test for confirmation of the grade points-scoring system, it is characterised in that described points-scoring system of examining for the levels is by receiving the sound of piano
Frequency signal, is carried out respectively according to the audio signal in terms of the accuracy, song integrality, tone color expressive force of pitch and rhythm
Marking and overall merit marking, aid in piano study and examine for the levels, and described points-scoring system of examining for the levels includes song selecting unit, signal
Receiving unit, information extraction unit, performance scoring unit, report output unit, wherein：
Described song selecting unit is used for the song for selecting to carry out playing scoring；Described signal receiving unit is drilled for reception
The audio signal played；Described information extraction unit is commented for extracting the playing information of the audio signal, and passing to performance
Subdivision；Described plays judge paper member according to described playing information, and the song selected with the song selecting unit is contrasted,
Accuracy, song integrality, tone color expressive force and the general performance of pitch and rhythm to the audio signal are evaluated, meter
Calculate appraisal result；Described report output unit is used to generate scoring report and defeated according to the appraisal result for playing the unit that scores
Go out.
2. piano test for confirmation of the grade points-scoring system as claimed in claim 1, it is characterised in that described points-scoring system of examining for the levels is also further
Including communication unit, described communication unit is used for interacting for the piano test for confirmation of the grade points-scoring system and other equipment and/or network.
3. piano test for confirmation of the grade points-scoring system as claimed in claim 1 or 2, it is characterised in that described communication mode is selected from wired
Two kinds of mode and/or wireless mode.
4. piano test for confirmation of the grade points-scoring system as claimed in claim 2, it is characterised in that described piano points-scoring system is also further
Including social shares unit and/or on-line study unit, wherein, described social shares unit is used to realize scoring report point
Enjoy, circle of friends ranking, study notes are exchanged；Described on-line study unit is used for the download and upload for realizing education resource.
5. the piano test for confirmation of the grade points-scoring system as described in claim any one of 1-4, it is characterised in that the song of the performance scoring
Source mode is selected from any one following or any a variety of：
Mode one：The song stored using internal system；
Mode two：The song downloaded by network；
Mode three：The song imported by external equipment.
6. the piano test for confirmation of the grade points-scoring system as described in claim any one of 1-4, it is characterised in that described information extraction unit
Noise reduction pretreatment is carried out to the audio signal, and analyzed according to the time-domain information and frequency domain information of the audio signal,
Extract the playing information of the audio signal；Described playing information includes starting point, pitch, duration, loudness, the tone color of note
Characteristic information.
7. the piano test for confirmation of the grade points-scoring system as described in claim any one of 1-4, it is characterised in that described performance scoring unit
Including pitch accuracy grading module, rhythm accuracy grading module, song integrality grading module, tone color expressive force scoring mould
Described note pitch information and the song are selected single by block, comprehensive grading module, described pitch accuracy grading module
The note pitch information of member selection song is contrasted, and carries out the scoring of pitch accuracy；Described rhythm accuracy scoring mould
Block by described note starting point and duration information and the song selecting unit select song note starting point and when long letter
Breath is contrasted, and carries out the scoring of rhythm accuracy；Described song integrality grading module is according to the audio signal and institute
Note pitch, starting point, the matching degree of duration that song selecting unit selects song are stated, the integrality that song is completed is carried out
Scoring；Described tone color expressive force grading module selects the note of song according to the audio signal and the song selecting unit
The matching degree of loudness and tamber characteristic information, carries out the scoring of tone color expressive force；Described comprehensive grading module is according to described
Pitch accuracy, rhythm accuracy, song integrality, the tone color expressive force of audio-frequency information score general performance.
8. the piano test for confirmation of the grade points-scoring system as described in claim any one of 1-4, it is characterised in that described tone color expressive force is commented
Loudness and tamber characteristic information of the sub-module in the playing information are scored, and described tamber characteristic information is according to institute
The time-domain information and frequency domain information for stating audio signal are calculated and obtained, including the frequency multiplication and the amplitude of frequency multiplication of each note, fundamental frequency and
The ratio of frequency multiplication amplitude.
9. the piano test for confirmation of the grade points-scoring system as described in claim any one of 1-4, it is characterised in that described scoring report is selected from
Summary report and/or detailed report, described summary report include note error rate and scoring, rhythm scoring, song integrality
Scoring, the scoring of tone color expressive force, comprehensive grading, described detailed report include content, the mistake of note pitch of summary report
Number and errors present, the number of errors of rhythm and errors present.
10. the piano test for confirmation of the grade points-scoring system as described in claim any one of 1-4, it is characterised in that described tone color expressive force
Scoring meets formula, wherein, coefficient meets constraint,, A is the correct note number of pitch, and B is the correct note number of rhythm, and C is sound
High, the correct note number of rhythm, N is note sum, and X is note loudness matching degree, and Y is tamber characteristic information matches degree.
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| CN109817192A (en) * | 2019-01-21 | 2019-05-28 | 深圳蜜蜂云科技有限公司 | A kind of intelligence training mate method |
| CN111816015A (en) * | 2019-04-11 | 2020-10-23 | 上海西陆信息科技有限公司 | Automatic scoring system and method for piano education |
| CN110111642A (en) * | 2019-05-07 | 2019-08-09 | 南京林业大学 | A kind of comprehensive auxiliary corrective device of a variety of musical instruments practice based on MATLAB |
| CN110264983A (en) * | 2019-07-01 | 2019-09-20 | 河南职业技术学院 | A kind of piano performance intelligent music frame and application method |
| CN111554256A (en) * | 2020-04-21 | 2020-08-18 | 华南理工大学 | Piano playing ability evaluation system based on strong and weak standards |
| CN111554256B (en) * | 2020-04-21 | 2023-03-24 | 华南理工大学 | Piano playing ability evaluation system based on strong and weak standards |
| CN113643676A (en) * | 2020-04-27 | 2021-11-12 | 汲趣艺术科技(上海)有限公司 | Performance evaluation system |
| CN112598961A (en) * | 2020-12-18 | 2021-04-02 | 上海妙克信息科技有限公司 | Piano performance learning method, electronic device and computer readable storage medium |
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