KR20130068913A - Apparatus for education of musical performance - Google Patents

Apparatus for education of musical performance Download PDF

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KR20130068913A
KR20130068913A KR1020110136362A KR20110136362A KR20130068913A KR 20130068913 A KR20130068913 A KR 20130068913A KR 1020110136362 A KR1020110136362 A KR 1020110136362A KR 20110136362 A KR20110136362 A KR 20110136362A KR 20130068913 A KR20130068913 A KR 20130068913A
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learning
sound
performance
playing
unit
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Korean (ko)
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김민서
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김민서
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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
    • G09B15/00—Teaching music
    • G09B15/001—Boards or like means for providing an indication of chords
    • G09B15/002—Electrically operated systems
    • G09B15/003—Electrically operated systems with indication of the keys or strings to be played on instruments
    • 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
    • G09B5/00—Electrically-operated educational appliances
    • G09B5/06—Electrically-operated educational appliances with both visual and audible presentation of the material to be studied
    • G09B5/065—Combinations of audio and video presentations, e.g. videotapes, videodiscs, television systems
    • 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
    • G09B7/00—Electrically-operated teaching apparatus or devices working with questions and answers
    • G09B7/02—Electrically-operated teaching apparatus or devices working with questions and answers of the type wherein the student is expected to construct an answer to the question which is presented or wherein the machine gives an answer to the question presented by a student
    • G09B7/04—Electrically-operated teaching apparatus or devices working with questions and answers of the type wherein the student is expected to construct an answer to the question which is presented or wherein the machine gives an answer to the question presented by a student characterised by modifying the teaching programme in response to a wrong answer, e.g. repeating the question, supplying a further explanation

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Physics & Mathematics (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Electrically Operated Instructional Devices (AREA)
  • Electrophonic Musical Instruments (AREA)

Abstract

PURPOSE: A learning support device for instrument playing is provided to enable a user to figure out a part played differently from the original sound and the accuracy of playing and then learning by repeated learning, thereby enabling a user to learn how to play an instrument by oneself. CONSTITUTION: A sound input part(100) amplifies a sound generated from an instrument and converts into digital data. A comparison part(320) compares the data inputted from the sound input part and playing data stored in a content storage part, and determines a part disagreeing with each other. A calculation part(330) calculates the accuracy of playing according to a determination result of the comparison part. A review control part(340) orders the repeated playing depending on the accuracy of playing. [Reference numerals] (100) Sound input part; (200) Contents storage part; (300) Lesson control part; (310) Memory part; (320) Comparison part; (330) Calculation part; (340) Review control part; (400) Display part; (500) Sound playing part

Description

악기연주학습보조장치{Apparatus for Education of Musical Performance}Musical Instrumental Learning Aids {Apparatus for Education of Musical Performance}

본 발명은 악기연주학습보조장치에 관한 것으로, 보다 자세하게는, 원음과 달리 연주된 부분 및 연주 정확도를 파악하여 반복학습을 할 수 있도록 함으로써, 사용자 스스로 악기 학습이 가능하도록 한 악기연주학습보조장치에 관한 것이다.The present invention relates to a musical instrument learning learning aid, and more specifically, to the musical instrument learning learning aid that enables the user to learn the instrument by allowing the user to repeat the learning by grasping the played part and the performance accuracy unlike the original sound. It is about.

통상 악기를 배우게 될 때 악보만 보고 혼자 연습을 하는 경우 정확히 연주를 하고 있는지 연주자 자신이 확인할 수가 없으므로 부득이 음악학원에서 교습을 받거나 과외선생을 통해 교습을 받게 된다.Normally, when you learn to play a musical instrument only by looking at the score, you can't check whether you are playing correctly. You will be instructed at the music academy or through a tutor.

그러나, 이러한 학습방법은 시간과 공간의 제약을 많이 받는다는 문제가 있다.However, this learning method has a problem of being constrained by time and space.

뿐만 아니라, 악기를 배우기 위한 교습비 등으로 인해 많은 비용이 들어가게 되므로, 악기를 배우고자 하는 사람이 중도에 포기하게 되는 경우가 빈번히 발생하게 된다.In addition, since a lot of costs are incurred due to tuition fees for learning a musical instrument, a person who wants to learn a musical instrument frequently gives up halfway.

본 발명은 상술한 문제를 해결하기 위한 것으로, 저장된 학습컨텐츠에 따라 연주를 하면서 틀린 부분을 디스플레이부에 시각적으로 표시하고 연주정확도에 따라 복습을 할 수 있도록 하여, 연주자 스스로 정확히 악보를 연주할 수 있도록 하는데 본 발명의 목적이 있다.The present invention is to solve the above problems, while playing according to the stored learning content to display the wrong part on the display visually and to review according to the performance accuracy, so that the player can play the score correctly by themselves It is an object of the present invention.

상기 목적을 해결하기 위해, 본 발명은, 컨텐츠저장부에 저장된 연주데이터로부터 악보와 영상을 시각적으로 표시하는 디스플레이부와 음을 청각적으로 재생하는 음향재생부를 구비하는 악기연주학습보조장치에 있어서, 악기로부터 발생된 음을 증폭하여 디지털데이터로 변환하는 음향입력장치; 및 학습프로그램이 저장된 메모리부와, 상기 음향입력장치로부터 입력된 데이터와 컨텐츠저장부에 저장된 연주데이터를 상호비교하여 서로 불일치하는 부분을 판단하는 비교부와, 상기 비교부의 판단결과에 따라 연주정확도를 산출하는 산출부와, 상기 연주정확도에 따라 반복연주를 지시하는 복습제어부를 구비한 레슨제어부;를 포함하고, 디스플레이부는 음향입력장치로부터 입력된 데이터와 컨텐츠저장부에 저장된 연주데이터가 서로 불일치하는 경우 악보 상에 불일치하는 부분 및 상기 연주정확도를 표시하는 악기연주학습보조장치를 특징으로 한다.In order to solve the above object, the present invention is a musical instrument learning and learning apparatus comprising a display unit for visually displaying the score and image from the performance data stored in the content storage unit and an acoustic reproduction unit for reproducing sound audibly, A sound input device for amplifying the sound generated from the musical instrument and converting the sound into digital data; And a memory for storing the learning program, a comparator for comparing the data input from the sound input device with the performance data stored in the content storage, and determining a discrepancy. And a lesson control unit including a calculation unit for calculating and a review control unit for instructing repetitive performance according to the performance accuracy, wherein the display unit is inconsistent with the data input from the sound input device and the performance data stored in the content storage unit. It is characterized by a musical instrument learning and learning apparatus for displaying the discrepancy portion and the performance accuracy on the score.

또한, 본 발명에 있어서, 상기 학습프로그램에는 적어도 연습할 악보구간, 및 상기 악보구간 연주시 주의해야할 사항이 포함되는 악기연주학습보조장치를 특징으로 한다.In addition, in the present invention, the learning program is characterized by a musical instrument learning and learning apparatus including at least the music section to be practiced, and matters to be noted when playing the music section.

또한, 본 발명에 있어서, 상기 복습제어부는 학습자의 전체 연주구간에 대해 상기 연주정확도가 일정 수준 미만인 부분에 대해 반복연주할 것을 학습자의 숙제로 지시하는 악기연주학습보조장치를 특징으로 한다.In addition, in the present invention, the review control unit is characterized in that the instrument playing learning aid for instructing the learner's homework to repeatedly play for the portion of the performance accuracy is less than a certain level for the entire playing section of the learner.

또한, 본 발명에 있어서, 컨텐츠저장부는 기본음정데이터를 포함하며, 상기 비교부는 상기 음향입력장치로부터 입력된 음의 중심주파수와 기본음정데이터를 비교하고, 상기 디스플레이부는 상기 음향입력장치로부터 입력된 음의 중심주파수와 기본음정데이터가 일치하지 않는 경우 조율을 지시하는 메세지를 표시하는 악기연주학습보조장치를 특징으로 한다.In addition, in the present invention, the content storage unit includes the basic pitch data, the comparison unit compares the center frequency and the basic pitch data of the sound input from the sound input device, the display unit is a sound input from the sound input device It is characterized by a musical instrument learning learning aid that displays a message instructing the tuning when the center frequency and the basic pitch data of the instrument do not match.

본 발명에 따르면, 시간과 공간의 제약을 받지 않고 악기의 학습이 가능하게 되며, 교습비용의 감소로 인한 사교육비 부담을 감소시킬 수 있고, 조율기능을 통해 정확히 악기의 음을 유지할 수 있으므로 학습자의 학습 효율성을 높일 수 있다.According to the present invention, the learning of the instrument is possible without being constrained by time and space, and the burden of private education costs due to the reduction of the teaching cost can be reduced, and the learner's learning can be maintained precisely through the tuning function. It can increase efficiency.

도 1은 본 발명에 따른 악기연주학습보조장치의 구성을 도시한 도면이다.1 is a view showing the configuration of a musical instrument learning learning assistant device according to the present invention.

이하에서는 도면을 참조로 하여 본 발명의 바람직한 실시예에 따른 악기연주학습보조장치에 대해 설명하기로 한다.Hereinafter, with reference to the drawings will be described with respect to the instrument playing learning aid according to an embodiment of the present invention.

도 1은 본 발명에 따른 악기연주학습보조장치의 구성을 도시한 도면이다.1 is a view showing the configuration of a musical instrument learning learning assistant device according to the present invention.

도 1을 참조로 하면, 본 발명에 따른 악기연주학습보조장치는 악기로부터 발생되는 음을 증폭하여 이를 컴퓨터가 인식할 있도록 디지털데이터로 변환하는 음향입력장치(100)와, 연주데이터가 저장된 컨텐츠저장부(200)와, 음향입력장치(100)로부터의 디지털데이터를 입력받는 레슨제어부(300)와, 상기 컨텐츠저장부(200)와 상기 레슨제어부(300)로부터 데이터를 입력받아 악보 및 영상을 출력하는 디스플레이부(400) 및 음향을 재향하는 음향재생부(500)로 구성된다.Referring to Figure 1, the musical instrument learning and learning aid according to the present invention amplifies the sound generated from the instrument and converts it into digital data so that the computer can recognize it, and the contents stored performance data stored The unit 200, the lesson controller 300 for receiving digital data from the sound input device 100, the content storage unit 200 and the lesson controller 300 receives the data and outputs the score and image The display unit 400 and the sound reproducing unit 500 to redirect the sound.

또한, 상기 레슨제어부(300)는, 학습프로그램이 저장된 메모리부(310)와, 상기 음향입력장치(100)로부터 입력된 데이터와 컨텐츠저장부(200)에 저장된 연주데이터를 상호비교하여 서로 불일치하는 부분을 판단하는 비교부(320)와, 상기 비교부(320)의 판단결과에 따라 연주정확도를 산출하는 산출부(330)와, 상기 연주정확도에 따라 반복연주를 지시하는 복습제어부(340)를 포함한다.In addition, the lesson controller 300 compares the memory unit 310 in which a learning program is stored, the data input from the sound input device 100, and the performance data stored in the content storage unit 200, to mutually disagree with each other. A comparator 320 for determining a part, a calculator 330 for calculating a performance accuracy according to the determination result of the comparator 320, and a review controller 340 for instructing repetitive performance according to the performance accuracy. Include.

여기서, 컨텐츠저장부(200)에 저장된 연주데이터는 연주자의 학습수준에 따른 다양한 곡의 악보, 유명연주자의 연주모습, 작곡가에 대한 해설, 곡의 구성, 곡이 창작되게 된 배경 등이 포함된다.Here, the performance data stored in the content storage unit 200 includes the score of various songs according to the learning level of the player, the appearance of the famous performer, the commentary on the composer, the composition of the song, the background on which the song was created, and the like.

그리고, 컨텐츠저장부(200)에는 기본음정데이터가 포함되며, 상기 비교부(320)는 상기 음향입력장치(100)로부터 입력된 음의 중심주파수와 기본음정데이터를 비교하고, 상기 디스플레이부(400)는 상기 음향입력장치로부터 입력된 음의 중심주파수와 기본음정데이터가 일치하지 않는 경우 조율을 지시하는 메세지를 표시할 수 있다.The content storage unit 200 includes basic pitch data, and the comparison unit 320 compares the center frequency of the sound input from the sound input device 100 with the basic pitch data, and displays the display unit 400. ) May display a message indicating tuning when the center frequency of the sound input from the sound input device and the basic pitch data do not match.

한편, 상기 복습제어부(340)는 연주정확도에 따른 목표값을 설정해 두고 일정 수준 이하일 경우 연주자가 반복연주를 할 것을 지시하도록 할 수 있으며, 바람직하게는 연주정확도가 60％ 미만일 경우 반복연주를 지시하는 것이 좋다.On the other hand, the review control unit 340 may set the target value according to the performance accuracy, and if the predetermined level is less than the player can instruct to repeat the performance, preferably when the performance accuracy is less than 60% to indicate the repeated performance It is good.

그리고, 상기 디스플레이부(400)는 음향입력장치(100)로부터 입력된 데이터와 컨텐츠저장부(200)에 저장된 연주데이터가 서로 불일치하는 경우 악보 상에 불일치하는 부분 및 상기 연주정확도를 표시할 수 있다.In addition, when the data input from the sound input device 100 and the performance data stored in the content storage unit 200 are inconsistent with each other, the display unit 400 may display a mismatched portion on the score and the performance accuracy of the performance. .

이하에서는 본 발명의 악기연주학습보조장치에 따른 악기연주학습방법을 설명하기로 한다.Hereinafter will be described a musical instrument learning method according to the musical instrument learning aid of the present invention.

설명의 편의를 위해 학습자가 피아노를 배우는 경우에 대해 상술하기로 한다.For convenience of explanation, a case in which the learner learns the piano will be described in detail.

우선, 학습자가 일정 곡을 학습하기 위해 컨텐츠저장부(200)에 저장된 소정의 연주데이터를 선택하는 경우, 곡에 대한 설명, 즉, 작곡가에 대한 해설, 곡의 구성, 곡이 창작되게 된 배경 등이 디스플레이부(400)와 음향재생부(500)를 통해 재생될 수 있다.First, when a learner selects predetermined performance data stored in the content storage unit 200 to learn a certain song, the description of the song, that is, a commentary on the composer, the composition of the song, the background on which the song is created, and the like. The display unit 400 and the sound reproducing unit 500 may reproduce the same.

또한, 학습자는 컨텐츠저장부(200)로부터 유명연주가가 실제로 연주하는 영상을 선택함으로써, 유명연주자의 연주 동영상이 디스플레이부(400) 및 음향재생부(500)를 통해 재생될 수 있다.In addition, the learner selects an image actually played by the celebrity performer from the content storage unit 200, so that the performance video of the celebrity performer can be reproduced through the display unit 400 and the sound reproducing unit 500.

다음으로, 학습자는 메모리부(310)에 저장된 학습프로그램에 따라 연주구간을 정할 수 있는데, 예를 들어, 악보의 4마디, 8마디씩 학습이 가능하다. 또한, 학습프로그램에는 연습할 악보구간뿐만 아니라 상기 악보구간 연주시 주의해야할 사항에 대한 설명이 포함되어 있으므로, 학습자는 보다 효율적으로 학습을 진행할 수 있다.Next, the learner can determine the playing section according to the learning program stored in the memory unit 310, for example, it is possible to learn by 4, 8 words of the score. In addition, the learning program includes not only a music score section to be practiced but also a description of matters to be noted when playing the music score section, so that the learner can learn more efficiently.

학습자는 상기 학습프로그램에 따라 피아노를 연주하게 되는데, 이 때, 레슨제어부(300)의 비교부(320)는 피아노 건반의 소리와 컨텐츠저장부(200)에 저장된 연주데이터가 서로 불일치하는 부분을 판단하게 되고, 산출부(330)에서 학습자의 연주정확도를 산출하게 된다.The learner plays the piano according to the learning program. At this time, the comparator 320 of the lesson controller 300 determines a portion of the piano keyboard that is inconsistent with the performance data stored in the content storage 200. The calculator 330 calculates the learner's performance accuracy.

이 경우, 학습자의 연주정확도가 95％ 이상이 될 경우 다음 연주구간으로 넘어가도록 학습프로그램을 프로그래밍할 수 있다.In this case, when the learner's performance accuracy is 95% or more, the learning program can be programmed to move to the next playing section.

한편, 연주정확도가 60％ 미만일 경우, 레슨제어부(300)의 복습제어부(340)는 그 연주구간에 대한 유명연주자의 연주를 디스플레이부(400) 및 음향재생부(500)를 통해 재생하도록 하고 이후 학습자에게 반복연습을 지시함으로써, 학습자가 다시 학습할 수 있도록 한다.On the other hand, if the playing accuracy is less than 60%, the review control unit 340 of the lesson control unit 300 to play the performance of the famous performer for the playing section through the display unit 400 and the sound reproducing unit 500 and then By instructing learners in repetitive exercises, they allow them to learn again.

이후 학습자의 학습이 완료된 후에는 상기 레슨제어부(300)의 복습제어부(340)는 전체 학습부분에 대해 연주정확도를 파악하여 오연주가 많이 발생한 부분들, 예컨대, 연주정확도가 60％ 미만인 부분에 대해 반복하여 연주할 횟수를 숙제로 지정해 디스플레이부(400)에 표시하도록 한다.After the learner's learning is completed, the review control unit 340 of the lesson controller 300 grasps the performance accuracy of the entire learning portion, and repeats the portions in which misjudgment occurs a lot, for example, the performance accuracy is less than 60%. By specifying the number of times to play the homework to display on the display unit 400.

한편, 본 발명에 따른 악기연주학습보조장치는 컨텐츠저장부(200)에 저장된 기본음정데이터와 상기 음향입력장치(100)로부터 입력된 음의 중심주파수를 비교하여 상호 불일치시 이를 디스플레이부(400)를 통해 조율할 것을 지시하는 메세지를 표시하게 되므로, 학습자가 정확한 음을 유지할 수 있도록 하여 정확한 음감을 갖도록 할 수 있다.On the other hand, the musical instrument learning learning aid according to the present invention compares the center frequency of the sound input from the sound input device 100 and the basic pitch data stored in the content storage unit 200, and displays the difference when the display unit 400 Since a message indicating to tune through is displayed, the learner can maintain the correct sound to have the correct sound.

100 : 음향입력장치 200 : 컨텐츠저장부
300 : 레슨제어부 310 : 메모리부
320 : 비교부 330 : 산출부
340 : 복습제어부 400 : 디스플레이부
500 : 음향재생부100: sound input device 200: content storage unit
300: lesson control unit 310: memory unit
320: comparison unit 330: calculation unit
340: Review control unit 400: Display unit
500: sound reproduction unit

Claims (4)

컨텐츠저장부에 저장된 연주데이터로부터 악보와 영상을 시각적으로 표시하는 디스플레이부와 음을 청각적으로 재생하는 음향재생부를 구비하는 악기연주학습보조장치에 있어서,
악기로부터 발생된 음을 증폭하여 디지털데이터로 변환하는 음향입력장치; 및
학습프로그램이 저장된 메모리부와, 상기 음향입력장치로부터 입력된 데이터와 컨텐츠저장부에 저장된 연주데이터를 상호비교하여 서로 불일치하는 부분을 판단하는 비교부와, 상기 비교부의 판단결과에 따라 연주정확도를 산출하는 산출부와, 상기 연주정확도에 따라 반복연주를 지시하는 복습제어부를 구비한 레슨제어부;를 포함하고,
디스플레이부는 음향입력장치로부터 입력된 데이터와 컨텐츠저장부에 저장된 연주데이터가 서로 불일치하는 경우 악보 상에 불일치하는 부분 및 상기 연주정확도를 표시하는 악기연주학습보조장치.In the musical instrument learning and learning apparatus having a display unit for visually displaying the score and image from the performance data stored in the content storage unit and a sound reproduction unit for reproducing sound acoustically,
A sound input device for amplifying the sound generated from the musical instrument and converting the sound into digital data; And
Comparing the memory unit in which the learning program is stored, the data input from the sound input device and the performance data stored in the content storage unit are compared with each other to determine the inconsistency, and calculates the performance accuracy according to the determination result of the comparison unit And a lesson controller including a calculation unit configured to and a review controller for instructing repeat play according to the performance accuracy.
And a display unit for displaying the inconsistency on the score and the performance accuracy when the data input from the sound input device and the performance data stored in the content storage unit are inconsistent with each other. 제1항에 있어서, 상기 학습프로그램에는 적어도 연습할 악보구간, 및 상기 악보구간 연주시 주의해야할 사항이 포함되는 악기연주학습보조장치.The musical instrument performance learning assistance apparatus according to claim 1, wherein the learning program includes at least a music score section to be practiced and a matter to be noted when playing the music score section. 제1항 또는 제2항에 있어서, 상기 복습제어부는 학습자의 전체 연주구간에 대해 상기 연주정확도가 일정 수준 미만인 부분에 대해 반복연주할 것을 학습자의 숙제로 지시하는 악기연주학습보조장치.The apparatus of claim 1 or 2, wherein the review control unit instructs the learner's homework to repeatedly play the part where the performance accuracy is less than a predetermined level for the entire playing section of the learner. 제1항 또는 제2항에 있어서, 컨텐츠저장부는 기본음정데이터를 포함하며, 상기 비교부는 상기 음향입력장치로부터 입력된 음의 중심주파수와 기본음정데이터를 비교하고, 상기 디스플레이부는 상기 음향입력장치로부터 입력된 음의 중심주파수와 기본음정데이터가 일치하지 않는 경우 조율을 지시하는 메세지를 표시하는 악기연주학습보조장치.The apparatus of claim 1 or 2, wherein the content storage unit includes basic pitch data, and the comparing unit compares the center frequency of the sound input from the sound input device with the basic pitch data, and the display unit from the sound input device. An instrumental performance learning aid that displays a message instructing tuning when the center frequency of the input note and the basic pitch data do not match.
KR1020110136362A 2011-12-15 2011-12-15 Apparatus for education of musical performance KR20130068913A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101459324B1 (en) * 2013-08-28 2014-11-07 이성호 Evaluation method of sound source and Apparatus for evaluating sound using it
WO2015093738A1 (en) * 2013-12-16 2015-06-25 이성호 Method for managing result of performance practice, management system using same, and database used for same
CN111862700A (en) * 2020-07-14 2020-10-30 上海积跬教育科技有限公司 Intelligent musical instrument sound-correcting accompanying method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101459324B1 (en) * 2013-08-28 2014-11-07 이성호 Evaluation method of sound source and Apparatus for evaluating sound using it
WO2015030319A1 (en) * 2013-08-28 2015-03-05 Lee Sung-Ho Sound source evaluation method, performance information analysis method and recording medium used therein, and sound source evaluation apparatus using same
CN105474288A (en) * 2013-08-28 2016-04-06 李星昊 Sound source evaluation method, performance information analysis method and recording medium used therein, and sound source evaluation apparatus using same
US9613542B2 (en) 2013-08-28 2017-04-04 Sung-Ho Lee Sound source evaluation method, performance information analysis method and recording medium used therein, and sound source evaluation apparatus using same
WO2015093738A1 (en) * 2013-12-16 2015-06-25 이성호 Method for managing result of performance practice, management system using same, and database used for same
CN111862700A (en) * 2020-07-14 2020-10-30 上海积跬教育科技有限公司 Intelligent musical instrument sound-correcting accompanying method

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