CN101702316B - Method for converting MIDI music into color information and system thereof - Google Patents
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Abstract
The invention provides a method for converting MIDI music into color information and a system thereof. The method comprises the steps of: setting a color regulation, and presetting a mapping table of music elements and the color regulation through the color regulation; analyzing the inputted MIDI music by means of the music elements to obtain a statistical analysis result of the MIDI music based on the music elements; and generating a color attribute document corresponding to the MIDI music with the statistical analysis result and the mapping table. The invention converts the music into the visible color information so that the color reasonably changes along with the music to simultaneously meet the acoustic and visual requirements and mutually unifies the acoustic and visual requirements. The invention also can process such as analysis or classification, and the like, the MIDI music by the color attribute of the MIDI, thereby being conveniently for the management of the music.
Description
Technical field
The present invention relates to electronic music technical field of data processing, particularly relate to a kind of method and system that MIDI music is converted into colouring information.
Background technology
Conventionally, we play music and just meet enjoyment acoustically, but music and color are linked together, and when playing different music, realize different visual effects, but await people's R and D.
Instrument devices digital interface (MIDI, Musical Instrument Digital Interface) technology is the application of computer multimedia technology in audio area.It has obtained quoting quite widely in professional music making field since early 1980s is born.Be different from the digital waveform audio files such as MP3, WAV, waveform to sound is sampled, itself does not record any sound waveform MIDI file, only records following information: certain MIDI passage and certain time send certain musical instrument to sound-producing devices such as MIDI compositors and what state need to carry out (comprising pitch, dynamics, volume, reverberation etc.) information of sounding with.MIDI transmission be not voice signal, but instructions such as note, control parameter, what its indication MIDI equipment will be done, how to do, for example, play which note, much volumes, what tone finish, in addition what accompaniment etc.MIDI system is actual is exactly the performance system of a composition, orchestration, electronic simulation.
Because MIDI data are not digital audio volume controls, but music code or title electronic music.Therefore utilize MIDI technology that electronic synthesizer, electronic rhythm machine and other electronics sources of sound and serial device are linked together to play and simulate the acoustics spectacular, tone color changes all the time, multiple button data in playing can be stored again, improve greatly ability and the condition of musical performance.The generation of MIDI technology and application, greatly reduce the creation cost of melody, saved a large amount of band performance persons' expenses, shortened the working time in recording studio, improved work efficiency.
Feature based on MIDI music, the problem that needs at present those skilled in the art to solve is exactly: how from MIDI extraction of music color attribute, music is converted into the color that vision can sense organ.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of method and system from MIDI extraction of music color attribute, thereby music can be converted into the color that vision can sense organ.
In order to address the above problem, the invention discloses a kind of method that MIDI music is converted into colouring information, comprising:
Setpoint color rule, and by the mapping table of the described color preset music element of rule and color rule; Wherein, described color rule comprises: color category is regular, color gradient is regular, color addition is regular, music application level rule; Described music element comprises structure, track, tone color, rhythm, speed;
MIDI music to input is carried out the analysis of music element, obtains the statistic analysis result of described MIDI music based on music element; Wherein, the analysis of described music element comprises: structure analysis, track analysis, tone color analysis, rhythm analysis or velocity analysis;
Utilize described statistic analysis result and described mapping table to give color attribute to described MIDI music, generate and the corresponding color attribute file of described MIDI music;
When playing described MIDI music, according to described color attribute file, demonstrate corresponding color, color changes with the variation of MIDI music.
Further, after generating color attribute file, also comprise: for different MIDI music, by the corresponding color attribute file of each MIDI music is added up, MIDI music is analyzed and classified.
Further, described structure analysis comprises: period analysis, phrase analysis, chord analysis, trifle analysis or note analysis.
Further, described track analysis comprises: the analysis of drum rail, the analysis of background rail, accompaniment rail analysis and melody rail are analyzed.
According to another embodiment of the invention, also disclose a kind of system that MIDI music is converted into colouring information, having comprised:
Mapping table preset module, for setpoint color rule, and by the mapping table of the described color preset music element of rule and color rule; Wherein, described color rule comprises: color category is regular, color gradient is regular, color addition is regular, music application level rule; Described music element comprises structure, track, tone color, rhythm, speed;
Music analysis module, for the MIDI music of input is carried out to the analysis of music element, obtains the statistic analysis result of described MIDI music based on music element; Wherein, the analysis of described music element comprises: structure analysis, track analysis, tone color analysis, rhythm analysis or velocity analysis
Color attribute generation module, for utilizing described statistic analysis result and described mapping table to give color attribute to described MIDI music, generates and the corresponding color attribute file of described MIDI music;
Also comprise: color display module, for when playing MIDI music, according to described color attribute file, demonstrate corresponding color, color changes with the variation of MIDI music.
Further, described system also comprises: music assorting module, and for the MIDI music for different, by the corresponding color attribute file of each MIDI music is added up, MIDI music is analyzed and classified.
Compared with prior art, the present invention has the following advantages:
The present invention is by analyzing the music element of MIDI music, set certain color rule so that MIDI music element is carried out to color analysis, thereby in MIDI music, add color attribute, MIDI music is expressed away by the mode of color, music is converted to the colouring information that vision can sense organ.The present invention links together the rule of the rule of MIDI music and color, makes color attend by music and reasonably converts, and meets that the sense of hearing and vision are enjoyed simultaneously, mutual unified demand.
Meanwhile, by color, show the emotional change that can give expression to music, by the variation of color, give expression to the emotional change of music, show intuitively expression, the mood of MIDI music.In addition, the element property of MIDI be associated with color attribute and add up, can also to MIDI music, analyze or classification etc. by the color attribute of MIDI, facilitating the management of music.
accompanying drawing explanation
Fig. 1 is a kind of process flow diagram that MIDI music is converted into the embodiment of the method for colouring information of the present invention;
Fig. 2 is a kind of structural drawing that MIDI music is converted into the system embodiment of colouring information of the present invention.
embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
The present invention is associated music element according to the color rule of setting with color, and the MIDI music of input is analyzed, obtain the color attribute file corresponding with described MIDI music, thereby music information is converted into colouring information, make people with visual experience, arrive the expressive force of music.
With reference to Fig. 1, show a kind of process flow diagram that MIDI music is converted into the embodiment of the method for colouring information of the present invention, comprise step:
Preferably, described color rule comprises: color category is regular, color gradient is regular, color addition is regular and music application level rule.
Wherein, color category rule can set that to take red, yellow, and green, green grass or young crops, indigo plant, purple, these several colors of ash be standard, also can set and take other colors as standard.Wherein, for every kind of color, in order to the hexadecimal code value of " RRGGBB " of 0x beginning, represent, wherein R represent redly, and G represent green, and B represents blueness, and every three kinds of colors are by two hexadecimal numeric representations.For example:
For redness, RGB1=0xff0000; For green, RGB2=0x00ff00;
For blueness, RGB3=0x0000ff; For yellow, RGB4=0xffff00;
For white, RGB5=0xffffff; For black, RGB6=0x000000; Etc..
Color gradient rule is the horizontal rule of time shaft, is divided into linear color gradient rule and non-linear color gradual change rule, regular according to linear gradient, between color, is changed to even variation; According to non-linear gradual change rule, between color, be changed to variation heterogeneous, show as and present jumping characteristic or mild variation.General MIDI music is used two kinds of timing code schemes, a kind ofly cries rules and forms timing (metricaltiming), and it is a kind of bulk billing system based on tick, the scheme as a crotchet of our normal use takies 120 tick or 45 tick; The another kind of timing code (timecode) of crying, it is to derive from the tradition industrial standard of recording, the clocking method based on frame (Frame), by hour, minute, second, thousand everys minute ands second form.Conventionally use the first time scheme, suppose that trifle 1 priming color is for red, trifle 2 priming colors are green, and the color transition from trifle 1 to trifle 2 adopts linear gradient rule, and the color value of 1 li of a certain moment t of trifle (tick of unit) can be:
RGBt＝RGB1×t/T1+RGB2×(1-t/T1)；
Wherein, RGB1 is red color value, and RGB2 is green color value, and T1 is the tick number of trifle 1.
Equally, the color transition from trifle 1 to trifle 2 also can adopt non-linear gradual change rule, has following mode:
RGBt＝RGB1×(t/T1)
2+RGB2×(1-t/T1)
2。
Color addition rule is longitudinal rule of image level, and it is the rule that different colours corresponding to different tracks is superimposed together.For example, a moment, that melody rail is corresponding is red (RGB1=0xff0000), that accompaniment rail is corresponding is green (RGB2=0x00ff00), can be converted into last color by following stack rule, and it can be expressed as with rgb color component:
R＝R1×50％+R2×50％；G＝G1×50％+G2×50％；B＝B1×50％+B2×50％。
By above-mentioned color addition rule, the color value of different track representatives is calculated according to the computing method of stack rule predetermining, obtain a color value, this color value represents this color that color addition obtains constantly.
For a first MIDI music, can be divided according to period, also can be divided according to less unit phrase, can also be divided according to less unit note, MIDI music can laterally form by different structure of a chord, also can longitudinally form by different tracks.Therefore, by color, corresponded to the application level of music, can be according to settings such as period level, phrase level, chord level, note level, track levels.
Color rule by above-mentioned setting, can preset music element and the mapping table of color rule.Wherein, described music element comprises structure, track, tone color, rhythm, speed.Can carry out corresponding with color based on music structure (can divide according to segmentation, sentence formula, chord, trifle, note), also can based on track, (comprise: drum rail, background rail, accompaniment rail, melody rail etc.) carry out correspondence, also can carry out corresponding with color with tone color, rhythm, speed.
For example, music application level rule adopts chord level, according to the color category rule of setting, the mapping table of preset chord and color: 1 chord and 6 chords are stable, give respectively yellow and green; 2 chords and 4 chords are more stable, give respectively redness and blueness; 5 chords and 3 chords are unstable, give respectively purple and cyan.And for example, music application level rule adopts note level, according to the color category rule of setting, and the mapping table of preset chord and color: red, yellow, and green, green grass or young crops, indigo plant, purple, the corresponding do re mi fa so la ci of ash difference.In addition, note that can also be within the scope of corresponding chord, the depth of giving based on main color according to dynamics is specified, for example, for the do of great efforts, give peony; For the less do of dynamics, give redness, the do for dynamics minimum, gives light red.
In the mapping table of preset music element and color rule, also comprise: represent the gradual change relation between the color of different music elements, and represent the overlaying relation between the color of different tracks.Above-mentioned color gradient relation and color addition relation generate according to color rule.For example in this mapping table, stipulated red to each color constantly in green progressive formation.Further, according to the speed of rhythm and speed, stipulated that respective color changes the rule of speed, when rhythm and speed are when slower, the pace of change between each color slows down; When rhythm and speed, the pace of change between each color is accelerated.And for example, redness, corresponding green and purple corresponding to background rail of accompaniment rail that melody rail is corresponding have been stipulated, three kinds of colors that color mutually superposes and generates.Concrete gradual change relation and overlaying relation are with reference to the setting of color rule.
In addition, the mapping relations of above-mentioned music element and color rule can be by User Defined, and user, according to the difference hobby of oneself, inputs certain parameter, the mapping relations that corresponding color rule and music element and color are set, produce and have personalized colouring information; In addition, the mapping relations of color rule and music element and color can be also system intialization, have stationarity.
Preferably, the analysis of described music element comprises: structure analysis, track analysis, tone color analysis, rhythm analysis or velocity analysis.
In MIDI music, by methods such as chord identifications, obtain chord and carry out formula, thereby can carry out the structure analysis of MIDI music.Wherein, described structure analysis comprises: period analysis, phrase analysis, chord analysis, trifle analysis, note analysis.Period sounds melodious, smooth by a plurality of, meets music chord and carries out theoretical trifle composition; Trifle is comprised of note.
In MIDI file, comprise some passage events.From passage event, can obtain such as pitch information, time value information, tone color information, dynamics information, expression information, Pitchbend Wheel or modulation wheel information, breath controller information, fader information, sound field controller information etc., from these information, can carry out track analysis and tone color analysis.Wherein, described track analysis comprises: the analysis of drum rail, the analysis of background rail, the analysis of accompaniment rail, melody rail are analyzed.
From note distribution and the volume distribution of drum rail, can roughly obtain some information rhythm, carry out rhythm analysis.
In MIDI file, also comprise some additional events, as the lyrics, mark, track name, tone mark, time signature, velocity amplitudes etc. can obtain such as information such as speed and tunes from the information of these events, thereby carry out velocity analysis.
According to the method described above the structure of MIDI music, track, tone color, rhythm or speed are analyzed, can be obtained the statistic analysis result of described MIDI music based on this music element.Described statistic analysis result provides music information while below described MIDI music being converted into color.
By the mapping table of preset music element and color in step 101, utilize in step 102 statistic analysis result based on music element to the MIDI music of input, to MIDI music, give color attribute, particularly, for described MIDI music, generate a MIDI color attribute file of answering in contrast.
For example, in step 102, a C of input is adjusted to MIDI music, analyze and obtain a statistic analysis result based on structure of a chord, for: | C-F-|C-F-|C-F-|G---|C---|.According to the mapping table of the preset chord of step 101 and color, for each chord, there is a kind of color corresponding with it: C chord is with yellow corresponding, and F chord is with red corresponding, and G chord is corresponding with purple., according to above-mentioned steps 103, generate a corresponding color attribute file of described MIDI music, described color attribute file record the change information of color, be in embodiments of the present invention:
| yellow-red | yellow-red | yellow-red | purple | yellow |.
Wherein, the time of color changes corresponding with the variation of this MIDI music chord, "-" represents the transition between color in a trifle, the transition of color, according to the linear gradient rule adopting in mapping table or non-linear gradual change rule, completes the change color between yellow, redness and purple in trifle and between trifle.
According to above-mentioned a kind of embodiment of the method that MIDI music is converted into colouring information, can there is following several application scenarios:
Application scenarios one:
According to above-mentioned steps 101 to 103, when playing described MIDI music, according to described color attribute file, demonstrate corresponding color, color changes with the variation of MIDI music.
For example, while playing MIDI music in mobile phone, display screen can be regular along with the color that user sets, and attends by music and carry out reasonably colour switching, makes user can arrive with visual experience the variation of music.Again for example, while playing music in musical theater, the colouring information that can transform by large screen display music, makes appreciator's listoning music on one side, experience visual effect along with the change color of music generation on one side, meet the enjoyment of the sense of hearing and vision simultaneously.In addition, the present invention is linked together the rule change of the rule change of music and color, has realized the combination of Science and art.
Application scenarios two:
According to above-mentioned steps 101 to 103, according to described color attribute file, demonstrate the color changing with MIDI music, the fluctuation that the variation by color can give expression to music changes, thereby makes the expression of MIDI music, the changeable in mood possibility that becomes.
For example, tonic chord (comprising 1 chord and 6 chords) represents more harmonious, and subordinate's chord (comprising 4 chords and 2 chords) represents to be relatively discord, and belongs to chord (comprising 5 chords and 3 chords) and represents least harmonious.If set the color rule of MIDI chord: in the mapping table of chord and color, by harmony to being discord, by chord correspondence change color from shallow to deep.When playing MIDI music, if the color showing is from shallow to deep, by deeply again, to shallow, can find out that the mood of MIDI music is unstable by being stabilized to, then to stable variation.
Application scenarios three:
According to above-mentioned steps 101 to 103, for different MIDI music, by the corresponding color attribute file of each MIDI music is added up, MIDI music is analyzed and classified.
Under some unified color rules, can MIDI music be analyzed or be classified, for example be defined as follows rule: in large tune, commonly use 1 chord, 4 chords and 5 chords, that 1 chord is corresponding with light red, 4 chords are with red corresponding, and 5 chords are corresponding with peony; In ditty, commonly use 6 chords, 2 chords and 3 chords, by 6 chords with light blue corresponding, 2 chords are with blue corresponding, 3 chords are corresponding with mazarine.The large music of adjusting is cheerful and light-hearted, and the music of ditty is melancholy.After music and color correspondence, so just provide a kind of method of music being analyzed and being classified by color distribution.If show, red color is more, and this music is cheerful and light-hearted music; If show, blue color is more, and this music is melancholy music.Equally, the music of same color series is grouped into together, can divides different kinds, if need to listen cheerful and light-hearted music can select the music of red colour system to listen, if need to listen melancholy music, can select the music of blue series to listen.By color, show MIDI music is analyzed and classified, find out a kind of new method of managing music, and intuitive and convenient.
With reference to Fig. 2, show a kind of structural drawing that MIDI music is converted into the system embodiment of colouring information of the present invention, comprising:
Mapping table preset module 201, for setpoint color rule, and by the mapping table of the described color preset music element of rule and color rule;
Color attribute generation module 203, for utilizing described statistic analysis result and described mapping table to generate and the corresponding color attribute file of described MIDI music.
First, mapping table preset module 201 is set the color rule that MIDI music is converted into colouring information, and by the color preset music element of rule of setting and the mapping table of color, wherein, described color rule can, according to user's difference hobby by User Defined, can be also the color rule of being fixed by system Lookup protocol; Then, the MIDI music of 202 pairs of user's inputs of music analysis module is analyzed, and obtains the statistic analysis result about music element; Finally, color attribute module 203, according to the statistic analysis result of music analysis module 202, is searched the corresponding relation of corresponding music element and color from mapping table preset module 201, generates the color attribute file of this MIDI music.According to described system, MIDI can be associated with color, from MIDI extraction of music, go out color attribute.
Preferably, described system also comprises: color display module 204, for when playing MIDI music, according to described color attribute file, demonstrate corresponding color, and color changes with the variation of MIDI music.
Preferably, described system also comprises: music assorting module 205, and for the MIDI music for different, by the corresponding color attribute file of each MIDI music is added up, MIDI music is analyzed and classified.
Each embodiment in this instructions all adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.For system embodiment, because it is substantially similar to embodiment of the method, so description is fairly simple, relevant part is referring to the part explanation of embodiment of the method.
Above to a kind of method and system that MIDI music is converted into colouring information provided by the present invention, be described in detail, applied specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (6)
1. MIDI music is converted into a method for colouring information, it is characterized in that, comprising:
Setpoint color rule, and by the mapping table of the described color preset music element of rule and color rule; Wherein, described color rule comprises: color category is regular, color gradient is regular, color addition is regular, music application level rule; Described music element comprises structure, track, tone color, rhythm, speed; Music application level rule adopts chord level, according to the color category rule of setting, the mapping table of preset chord and color; Or music application level rule adopts note level, according to the color category rule of setting, the mapping table of preset note and color;
MIDI music to input is carried out the analysis of music element, obtains the statistic analysis result of described MIDI music based on music element; Wherein, the analysis of described music element comprises: structure analysis, track analysis, tone color analysis, rhythm analysis or velocity analysis;
Utilize described statistic analysis result and described mapping table to give color attribute to described MIDI music, generate and the corresponding color attribute file of described MIDI music;
When playing described MIDI music, according to described color attribute file, demonstrate corresponding color, color changes with the variation of MIDI music.
2. method according to claim 1, is characterized in that, after generating color attribute file, also comprises:
For different MIDI music, by the corresponding color attribute file of each MIDI music is added up, MIDI music is analyzed and classified.
3. method according to claim 1, is characterized in that,
Described structure analysis comprises: period analysis, phrase analysis, chord analysis, trifle analysis or note analysis.
4. method according to claim 1, is characterized in that,
Described track analysis comprises: the analysis of drum rail, the analysis of background rail, accompaniment rail analysis and melody rail are analyzed.
5. MIDI music is converted into a system for colouring information, it is characterized in that, comprising:
Mapping table preset module, for setpoint color rule, and by the mapping table of the described color preset music element of rule and color rule; Wherein, described color rule comprises: color category is regular, color gradient is regular, color addition is regular, music application level rule; Described music element comprises structure, track, tone color, rhythm, speed; Music application level rule adopts chord level, according to the color category rule of setting, the mapping table of preset chord and color; Or music application level rule adopts note level, according to the color category rule of setting, the mapping table of preset note and color;
Music analysis module, for the MIDI music of input is carried out to the analysis of music element, obtains the statistic analysis result of described MIDI music based on music element; Wherein, the analysis of described music element comprises: structure analysis, track analysis, tone color analysis, rhythm analysis or velocity analysis;
Color attribute generation module, for utilizing described statistic analysis result and described mapping table to give color attribute to described MIDI music, generates and the corresponding color attribute file of described MIDI music;
Also comprise:
Color display module, for when playing MIDI music, demonstrates corresponding color according to described color attribute file, and color changes with the variation of MIDI music.
6. system according to claim 5, is characterized in that, also comprises:
Music assorting module, for the MIDI music for different, by the corresponding color attribute file of each MIDI music is added up, analyzes and classifies MIDI music.
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| CN1321964A (en) * | 2000-05-02 | 2001-11-14 | 莫绍祥 | Sound and beat image display method and equipment |
| CN2449960Y (en) * | 2000-11-24 | 2001-09-26 | 谢见智 | Aquatic animal ornament with water dancing effect |
| CN1652203A (en) * | 2004-02-06 | 2005-08-10 | 李志扬 | Prompting device for playing musical instrument |
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