CN107274876A - A kind of audition paints spectrometer - Google Patents
A kind of audition paints spectrometer Download PDFInfo
- Publication number
- CN107274876A CN107274876A CN201710523883.8A CN201710523883A CN107274876A CN 107274876 A CN107274876 A CN 107274876A CN 201710523883 A CN201710523883 A CN 201710523883A CN 107274876 A CN107274876 A CN 107274876A
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- CN
- China
- Prior art keywords
- music score
- memory
- music
- equipment
- score
- 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.)
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Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H1/00—Details of electrophonic musical instruments
- G10H1/0008—Associated control or indicating means
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H1/00—Details of electrophonic musical instruments
- G10H1/0033—Recording/reproducing or transmission of music for electrophonic musical instruments
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
- H04M1/7243—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality with interactive means for internal management of messages
- H04M1/72433—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality with interactive means for internal management of messages for voice messaging, e.g. dictaphones
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H2210/00—Aspects or methods of musical processing having intrinsic musical character, i.e. involving musical theory or musical parameters or relying on musical knowledge, as applied in electrophonic musical tools or instruments
- G10H2210/101—Music Composition or musical creation; Tools or processes therefor
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H2220/00—Input/output interfacing specifically adapted for electrophonic musical tools or instruments
Abstract
Spectrometer is painted the invention discloses a kind of audition, it includes musical note collecting device, memory, feature extracting device, music score generates equipment, music score display device, music score optimizes equipment and the output end of music score playback equipment musical note collecting device is connected on the input interface of the memory, the feature extracting device and the memory two-way communication link, the general generation equipment of pleasure and the memory two-way communication, the general optimization equipment of pleasure and the memory two-way communication, the input of the general playback equipment of pleasure is connected on the output interface of the memory, the input of the general display device of pleasure is connected on the output interface of the memory, the present invention realizes the automation identification of spectrogram to music in mobile terminal, note spectrum and check and correction, contribute to the study to basic music theory, the popularization of act of music and popular.
Description
Technical field
The present invention relates to identification of spectrogram, note spectrum and the school that a kind of audition paints music score during spectrometer, especially a kind of musical composition
Device is realized to automating on mobile terminals, belongs to Computer Science and Technology and literary and artistic creation and performance technical field.
Background technology
In prior art and application, the drafting to music score remains in artificial drafting stage, or pure manual drawing, or
Person paints spectrum Software on Drawing using computer is special, and these, which are required for painting spectrum person, substantial amounts of music theory knowledge and musical quality.
For common music-lover, it is still a relatively difficult thing to draw music score, thus can not by oneself
Music inspiration is recorded in time, especially when running into one section of beautiful melody, due to the deficiency of ability, it is impossible to according to by melody
Recorded with music score, this is to the king-sized loss of musical composition.On the other hand, for musical composition person, it is necessary to using automatic
That changes paints spectral technology, can so greatly reduce the workload in production process.
Spectrum field is painted what computer painted spectrum field, particularly mobile terminal, is no lack of various music score rendering technique, but to pleasure
It is blank that the automation of spectrum, which is drawn,.
The present invention paints spectrometer for problem above there is provided a kind of audition, so as to solve identification of spectrogram during musical composition,
Note spectrum is with check and correction in mobile terminal automation problem of implementation.
The content of the invention
To achieve the above object, the present invention provides following technical scheme：A kind of audition paints spectrometer, and it includes musical note collection and set
Standby, memory, feature extracting device, music score generation equipment, music score display device, music score optimization equipment and music score playback equipment,
Characterized in that, the output end of the musical note collecting device is connected on the input interface of the memory, the feature extraction
Equipment and the memory two-way communication link, the general generation equipment of pleasure and the memory two-way communication, the pleasure are general excellent
Change equipment and the memory two-way communication, the input of the general playback equipment of pleasure connects the output interface of the memory
On, the input of the general display device of pleasure is connected on the output interface of the memory.
Further, preferably, the musical note collecting device uses sound pick-up outfit, after sound pick-up outfit is opened, to melody
Voice signal sampled, quantified and encoded, generate pulse code modulation audio file, preserve in memory, wherein,
The performance sound of the voice signal of melody including musical instrument, people sing sound and contain the perceived voice signal of energy of tone.
Further, preferably, the feature extracting device is responsible for that voice signal is calculated and analyzed, the feature
Extraction equipment reads the audio file preserved by musical note collecting device into internal memory from memory, to the voice in audio file
Signal first carries out noise reduction process, then carries out speech terminals detection, to obtain real voice signal；Finally to through sound end
Voice signal after detection carries out time-domain analysis in short-term, extracts the sound characteristic information such as frequency, duration of voice signal,
Preserve in memory.
Further, preferably, music score generation equipment is responsible for generating the calculating of music score, music score generates equipment from depositing
The sound characteristic information calculated by feature extracting device is read in reservoir, roll call pass corresponding with frequency is compared by calculating
The corresponding relation of the fiducial time of system, duration and beat, generates music data, preserves in memory.
Further, preferably, the music score display device is responsible for showing music score, it uses intelligent mobile terminal
Touch screen is shown, music score display device is responsible for reading the music data that equipment generation is generated by music score from memory, according to using
Music data is depicted as corresponding music score by the score mode of person's selection and the music score basic parameter of user's setting, is shown in aobvious
On display screen curtain.
Further, preferably, the score mode at least includes staff and numbered musical notation score mode, the music score is basic
Parameter at least includes the time per beat and trifle.
Further, preferably, music score optimization equipment is responsible for that music score is proofreaded and optimized for user, music score
Optimization equipment is directly connected with memory, music score display device and music score generation equipment, music score is shown into user, by using
Person carries out reading spectrum and verification to music score, when user has found that music score draws wrong, the corresponding sound of long-press in music score optimization equipment
Symbol, the property to note is modified, while the music data in modification in music score generation equipment, user uses preservation function
Amended music data is saved in memory again.
Further, preferably, the music score playback equipment is responsible for replaying the music score through drawing automatically for music,
It is directly connected with memory, and music score playback equipment is read in memory through musical note collecting device, feature extracting device, music score life
Forming apparatus and music score optimization equipment processing generation music data, select music type according to user, calculate and compare tone and section
Clap, using the music libraries in memory, the musical performance represented by music data is come out, user exists according to the effect of performance
Music score is adjusted in music score optimization equipment.
Further, preferably, the audition paint spectrometer circuit include be arranged in series power supply, single knife switch, processor,
Music score display device and memory, happy general collecting device, feature extracting device, music score generation equipment, music score optimization equipment and pleasure
Compose display device setting parallel with one another in circuit, the circuit also includes multidiameter option switch, multidiameter option switch is used to select
It is which in the happy general collecting device of access, feature extracting device, music score generation equipment or music score optimization equipment.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention is realized in mobile terminal to the automation identification of spectrogram of music, note spectrum and check and correction, contributes to basic music theory
Practise, the popularization of act of music and popular.
Brief description of the drawings
Fig. 1 is the structural representation that a kind of audition of the invention paints spectrometer；
Fig. 2 is circuit theory figure structure schematic representation of the present invention；
Fig. 3 is that music score display device of the present invention optimizes equipment plan with music score；
Fig. 4 is that hardware constitutes block diagram；
Wherein, 1, musical note collecting device, 2, music score display device, 3, music score playback equipment, 4, memory；5th, feature extraction is set
It is standby, 6, music score generation equipment, 7, music score optimization equipment, 8, power supply；9th, single knife switch, 10, CPU, 11, multidiameter option switch,
12-16, button.
Embodiment
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.
Fig. 1-4 are referred to, the present invention provides a kind of technical scheme：A kind of audition paints spectrometer, and it includes musical note collecting device
1st, memory 4, feature extracting device 5, music score generation equipment 6, music score display device 2, music score optimization equipment 7 and music score are played and set
Standby 3, it is characterised in that the output end of the musical note collecting device 1 is connected on the input interface of the memory 4, the spy
Levy extraction equipment 5 and the two-way communication link of memory 4, the general generation equipment 6 of pleasure and the memory two-way communication, institute
Happy general optimization equipment 7 and the memory two-way communication are stated, the input of the general playback equipment 3 of pleasure connects the memory
On output interface, the input of the general display device 2 of pleasure is connected on the output interface of the memory.
The present invention is on mobile terminals using musical note collecting device collection musical note information；Musical note information is inputted to feature and carried
Calculating analysis is carried out in taking equipment, wherein the musical note feature contained；Musical note feature is inputted to music score（Staff, numbered musical notation
Deng）Equipment is generated, corresponding music data is generated；The music data of generation is inputted into music score display device, according to
The score mode of user's selection is depicted as corresponding music score；User optimizes equipment by music score and carries out check and correction modification to music score；
Music data is inputted into music score playback equipment music score is played out.
Musical note collecting device 1, in the present embodiment using sound pick-up outfit, after sound pick-up outfit is opened, to the voice of melody
Signal is sampled, quantified and encoded, and generates the audio file of pulse code modulation, is preserved in memory.The voice of melody
Signal includes the performance sound of musical instrument, sound etc. of singing of people contains the voice signal that the energy of tone is perceived.
Feature extracting device 5 is calculating and analytical equipment of the present invention to voice signal, is directly connected with memory, feature
Extraction equipment reads the audio file preserved by musical note collecting device into internal memory from memory, to the voice in audio file
Signal first carries out noise reduction process, then carries out speech terminals detection, to obtain real voice signal；Finally to through sound end
Voice signal after detection carries out time-domain analysis in short-term, extracts the sound characteristic information such as frequency, duration of voice signal,
Preserve in memory.
Music score generation equipment 6 is the calculating generation equipment of music score in the present invention, is directly connected with memory, music score generation is set
It is standby that the sound characteristic information calculated by feature extracting device is read from memory, pair of roll call and frequency is compared by calculating
Should be related to, the corresponding relation of the fiducial time of duration and beat, generate music data, preserve in memory.
Music score display device 2 is the display device of the music score in the present invention, directly with memory and music score optimization equipment phase
Even, generally 3.2 cun or bigger of intelligent mobile terminal shows touch screen, and music score display device is read by music score from memory
Generate the music data of equipment generation, the score mode selected according to user（Score mode includes the music score such as staff, numbered musical notation
Pattern）The music score basic parameter set with user（Music score basic parameter includes the time per beat, and the music score such as trifle is joined substantially
Number）Music data is depicted as corresponding music score, display is on the display screen.
Music score optimization equipment 7 is the equipment that user is proofreaded and optimized to music score in the present invention, generally 3.2 cun or
The bigger intelligent mobile terminal of person shows touch screen, is directly connected with memory, music score display device and music score generation equipment, music score
Optimization equipment is directly connected with memory, music score display device and music score generation equipment, music score is shown into user, by using
Person carries out reading spectrum and verification to music score.When user find music score draw it is wrong when, can on touch screen the corresponding note of long-press, it is right
The property of note（Music score property includes roll call, beat etc.）Modify, while the music score number in modification in music score generation equipment
According to amended music data is saved in memory by user again using function is preserved.
Music score playback equipment 3 is that the music score drawn automatically through the present invention is replayed into the equipment for music in the present invention,
Directly it is connected with memory, music score playback equipment is read in memory through musical note collecting device, feature extracting device, music score generation
Equipment and music score optimization equipment processing generation music data, music type is selected according to user（Music type includes piano, flute
The instrumental musics such as son）, calculate and compare tone（Pitch）And beat, using the music libraries in memory, by represented by music data
Musical performance come out, user can be adjusted according to the effect of performance in music score optimizes equipment to music score.
Such as Fig. 2, power supply 8, single knife switch 9, processor 10, the music score that the circuit that the audition paints spectrometer includes being arranged in series show
Show equipment 2 and memory 4, happy general collecting device, feature extracting device, music score generation equipment, music score optimization equipment and music score are aobvious
Show equipment setting parallel with one another in circuit, the circuit also includes multidiameter option switch, and it is to connect that multidiameter option switch, which is used for selection,
Enter which in happy general collecting device, feature extracting device, music score generation equipment or music score optimization equipment.Power supply 8 is whole
Individual system provides electric power；Switch 9 controls the startup and closing of whole system；CPU10 provides control for system and serviced with calculating；
Multidiameter option switch 11 is controlled the start and stop of each part by 10CPU.
Fig. 3 is that the music score display device of the present invention optimizes the plan of equipment with music score.In Fig. 3,12-16 is button,
12 be taskbar area of the present invention, shows the information such as music-book information, including music score name, type；13 be that music score of the present invention draws area
Domain, the music score that the present invention is drawn is shown in one's respective area；14 be Menu key of the present invention, and user presses Menu key, selection bag
The menu such as preservation is included, cancels, change, saving as；15 be the return key of the present invention, and user presses return key, is back to one
Individual task view；16 be the application method button of the music score optimization function of the present invention, the modification of long-press 16 button on touch screen, can be with
The a certain note of music score to being drawn through the present invention is modified, and is adjusted, is improved music score.
The hardware that Fig. 4 is the present invention constitutes block diagram.Recording system in Fig. 4, musical note collecting device uses recording system, record
System for electrical teaching is connected by D/A Interface ＆ Bus；Touch screen is connected by Man Machine Interface with bus；Happy general playback equipment is sound equipment
System is connected by A/D Interface ＆ Bus；Bus is responsible for transmitting various controls, address and data-signal；ROM is used as the present invention
Memory；CPU is control and the computing unit of the present invention；RAM, is the internal memory of the present invention.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (9)
1. a kind of audition paints spectrometer, it includes musical note collecting device, memory, feature extracting device, music score generation equipment, music score
Display device, music score optimization equipment and music score playback equipment, it is characterised in that the output end of the musical note collecting device is connected to
On the input interface of the memory, the feature extracting device and the memory two-way communication link, the general generation of the pleasure
Equipment and the memory two-way communication, the general optimization equipment of pleasure and the memory two-way communication, the general broadcasting of pleasure are set
Standby input is connected on the output interface of the memory, and the input of the general display device of pleasure connects the memory
On output interface.
2. a kind of audition according to claim 1 paints spectrometer, it is characterised in that：The musical note collecting device is set using recording
It is standby, after sound pick-up outfit is opened, the voice signal of melody is sampled, quantified and encoded, generate the sound of pulse code modulation
Frequency file, is preserved in memory, wherein, the voice signal of melody, which includes the performance sound of musical instrument, people, to be sung sound and contains
The perceived voice signal of the energy of tone.
3. a kind of audition according to claim 1 paints spectrometer, it is characterised in that：The feature extracting device is responsible for sound
Signal is calculated and analyzed, and the feature extracting device reads the audio file preserved by musical note collecting device from memory
Into internal memory, noise reduction process is first carried out to the voice signal in audio file, speech terminals detection is then carried out, it is real to obtain
Voice signal；Time-domain analysis in short-term finally is carried out to the voice signal after speech terminals detection, voice signal is extracted
The sound characteristic information such as frequency, duration, is preserved in memory.
4. a kind of audition according to claim 1 paints spectrometer, it is characterised in that：The music score generation equipment is responsible for music score
Calculating generation, music score generation equipment the sound characteristic information calculated by feature extracting device is read from memory, pass through
The corresponding relation of the fiducial time of the corresponding relation for comparing roll call and frequency, duration and beat is calculated, music data is generated,
Preserve in memory.
5. a kind of audition according to claim 1 paints spectrometer, it is characterised in that：The music score display device is responsible for music score
It has been shown that, it uses intelligent mobile terminal to show touch screen, music score display device is responsible for reading from memory being generated by music score
The music score basic parameter of the music data of equipment generation, the score mode selected according to user and user's setting is by music score number
According to corresponding music score is depicted as, display is on the display screen.
6. a kind of audition according to claim 5 paints spectrometer, it is characterised in that：The score mode at least includes staff
With numbered musical notation score mode, the music score basic parameter at least includes the time per beat and trifle.
7. a kind of audition according to claim 1 paints spectrometer, it is characterised in that：The music score optimization equipment is responsible for for using
Person is proofreaded and optimized to music score, and music score optimization equipment directly connects with memory, music score display device and music score generation equipment
Connect, music score is shown to user, reading spectrum and verification are carried out to music score by user, when user has found that music score drafting is wrong
When, the corresponding note of long-press in music score optimization equipment, the property to note is modified, while in modification in music score generation equipment
Music data, user using preserve function amended music data is saved in memory again.
8. a kind of audition according to claim 1 paints spectrometer, it is characterised in that：The music score playback equipment is responsible for through certainly
The dynamic music score drawn is replayed as music, and it is directly connected with memory, through musical note in music score playback equipment reading memory
Collecting device, feature extracting device, music score generation equipment and music score optimization equipment processing generation music data, are selected according to user
Music type is selected, calculates and compares tone and beat, using the music libraries in memory, by the musical performance represented by music data
Out, user is adjusted according to the effect of performance in music score optimizes equipment to music score.
9. a kind of audition according to claim 1-8 any one paints spectrometer, it is characterised in that：The audition paints the electricity of spectrometer
Road includes power supply, single knife switch, processor, music score display device and the memory being arranged in series, and happy general collecting device, feature are carried
In circuit, the circuit is also wrapped for taking equipment, music score generation equipment, music score optimization equipment and the setting parallel with one another of music score display device
Multidiameter option switch is included, it is to access happy general collecting device, feature extracting device, music score to generate and set that multidiameter option switch, which is used for selection,
Which in equipment standby or music score optimize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710523883.8A CN107274876A (en) | 2017-06-30 | 2017-06-30 | A kind of audition paints spectrometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710523883.8A CN107274876A (en) | 2017-06-30 | 2017-06-30 | A kind of audition paints spectrometer |
Publications (1)
| Publication Number | Publication Date |
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| CN107274876A true CN107274876A (en) | 2017-10-20 |
Family
ID=60070522
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710523883.8A Pending CN107274876A (en) | 2017-06-30 | 2017-06-30 | A kind of audition paints spectrometer |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107901694A (en) * | 2017-11-14 | 2018-04-13 | 上海电机学院 | A kind of interactive drawing method and device based on sound frequency value |
| CN108257588A (en) * | 2018-01-22 | 2018-07-06 | 姜峰 | One kind is set a song to music method and device |
| CN108447311A (en) * | 2018-02-02 | 2018-08-24 | 北京网梯科技发展有限公司 | Music education method and apparatus based on voice recognition |
| CN110111762A (en) * | 2019-05-06 | 2019-08-09 | 香港教育大学 | A kind of grid music score generation system |
| CN110379400A (en) * | 2018-04-12 | 2019-10-25 | 森兰信息科技（上海）有限公司 | It is a kind of for generating the method and system of music score |
| CN111883090A (en) * | 2020-06-30 | 2020-11-03 | 海尔优家智能科技（北京）有限公司 | Method and device for making audio file based on mobile terminal |
| CN113257210A (en) * | 2021-06-02 | 2021-08-13 | 南京邮电大学 | Multi-mode music score transformation method and system for copper or wood musical instrument |
| US11527223B2 (en) | 2018-04-12 | 2022-12-13 | Sunland Information Technology Co., Ltd. | System and method for generating musical score |
| CN115578910A (en) * | 2022-10-18 | 2023-01-06 | 广州市微锋科技有限公司 | Vocal music comprehensive training device, method and system |
| CN113571031B (en) * | 2021-07-23 | 2024-03-15 | 合肥若叶无间网络科技有限公司 | Automatic error correction and intelligent prompting method for Guqin music score |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107901694A (en) * | 2017-11-14 | 2018-04-13 | 上海电机学院 | A kind of interactive drawing method and device based on sound frequency value |
| CN108257588A (en) * | 2018-01-22 | 2018-07-06 | 姜峰 | One kind is set a song to music method and device |
| CN108257588B (en) * | 2018-01-22 | 2022-03-01 | 姜峰 | Music composing method and device |
| CN108447311A (en) * | 2018-02-02 | 2018-08-24 | 北京网梯科技发展有限公司 | Music education method and apparatus based on voice recognition |
| CN110379400B (en) * | 2018-04-12 | 2021-09-24 | 森兰信息科技（上海）有限公司 | Method and system for generating music score |
| CN110379400A (en) * | 2018-04-12 | 2019-10-25 | 森兰信息科技（上海）有限公司 | It is a kind of for generating the method and system of music score |
| US11527223B2 (en) | 2018-04-12 | 2022-12-13 | Sunland Information Technology Co., Ltd. | System and method for generating musical score |
| CN110111762A (en) * | 2019-05-06 | 2019-08-09 | 香港教育大学 | A kind of grid music score generation system |
| CN111883090A (en) * | 2020-06-30 | 2020-11-03 | 海尔优家智能科技（北京）有限公司 | Method and device for making audio file based on mobile terminal |
| CN113257210A (en) * | 2021-06-02 | 2021-08-13 | 南京邮电大学 | Multi-mode music score transformation method and system for copper or wood musical instrument |
| CN113257210B (en) * | 2021-06-02 | 2023-10-24 | 南京邮电大学 | Multi-mode spectrum conversion method and system for copper or wooden musical instrument |
| CN113571031B (en) * | 2021-07-23 | 2024-03-15 | 合肥若叶无间网络科技有限公司 | Automatic error correction and intelligent prompting method for Guqin music score |
| CN115578910A (en) * | 2022-10-18 | 2023-01-06 | 广州市微锋科技有限公司 | Vocal music comprehensive training device, method and system |
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