KR100506228B1 - Mobile terminal and method for editing and playing music - Google Patents

Abstract

The present invention provides a mobile communication terminal for playing and editing music, comprising a plurality of keys for setting a music playing mode and editing a music playing and stored audio files, and outputting key input data corresponding to a key pressed by a user. Temporarily storing music played in the music playing mode and the stored audio file editing mode, a memory unit for storing a key input unit, a program and data for performing the music playing mode setting and music performance and editing of the stored audio file Buffer is set and the music playing mode is set by the user when the key corresponding to the music playing mode is set and stored.When the key corresponding to the music playing is input by the user, the music is played according to the preset music playing mode setting. Temporarily store music played in the buffer while playing from the user A controller for storing music temporarily stored in the buffer as an audio file when a music storage request is requested, and editing and storing the stored audio file through an interface with a user when a key corresponding to editing of an audio file stored by a user is input; The sound source chip converts the music played under the control into an analog signal that can be heard by the user and outputs the original sound, and a display unit for displaying the music playing mode setting and the stored audio file editing screen.

Description

Mobile communication terminal and method for playing and editing music {MOBILE TERMINAL AND METHOD FOR EDITING AND PLAYING MUSIC}

The present invention relates to a mobile communication terminal, and more particularly, to a mobile communication terminal and a method for playing and storing music and editing stored music using an audio file such as a MIDI.

In general, a mobile communication terminal refers to a device such as, for example, a mobile phone or a personal digital assistant (PDA), and provides a communication function for making a call or exchanging data while moving. However, according to the development of communication technology, mobile communication terminals currently released provide additional functions such as a camera function, a ringtone function, etc., in which various images and sounds are used, in addition to the above communication functions. Among the additional functions described above, additional functions using an image are provided in various ways such as a camera function, an image editing function, a camcorder editing function, etc., but additional functions using sound are provided in a limited manner as a ringtone function.

In order to solve the above problems, if a user can directly play and store music in the mobile communication terminal and implement a function of editing the stored music, the efficiency of using the terminal can be maximized. In addition, it is possible to increase the utilization of audio files in the mobile communication terminal and satisfy the user's desire to play and edit music.

Accordingly, an object of the present invention is to allow a user to play music, to store the played music content as an audio file such as a MIDI (Musical Instrument Digital Interface), and to modify and edit the stored audio file. A mobile communication terminal and method for improving usability and enjoyment are provided.

Another object of the present invention is a mobile communication terminal that allows users to set the music playing mode in advance before playing music, and to save the music playing in accordance with the pre-stored music playing mode settings when playing the music can join the mobile communication terminal of other users And providing a method.

In accordance with the above object, the present invention provides a mobile communication terminal for playing and editing music, comprising a plurality of keys for setting a music playing mode and editing a music playing and stored audio files and corresponding to a key pressed by a user. A key input section for outputting key input data, a memory section for storing programs and data for performing the music playing mode setting, music playing and editing of the stored audio file, playing in the music playing mode and the stored audio file editing mode Buffer for temporarily storing music and the music playing mode when the key corresponding to the music playing mode setting is input by the user. Temporarily store the music played in the buffer while playing the music according to the contents, When a user requests a music storage to be played, the music stored temporarily in the buffer is stored as an audio file, and when a key corresponding to the editing of the audio file stored by the user is input, the stored audio file is edited and stored through an interface with the user. And a control unit, a sound source chip for converting the music played under a predetermined control into an analog signal that can be heard by the user, and outputting the original sound, and a display unit for displaying the music playing mode setting and the stored audio file editing screen. .

Another invention provides a method of playing and editing music in a mobile communication terminal having a sound source chip for playing music, the method comprising: performing a music playing mode setting through an interface with a user and storing music playing mode setting contents in a memory; A second step of performing a music performance according to the pre-stored music performance mode setting contents when the user requests a music performance from the user, and storing the played music as an audio file in the memory when the user requests a music storage request from the user; If there is a request for editing the stored audio file from the user, the third process of editing and storing the stored audio file in a memory through an interface with a user.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the same elements in the figures are represented by the same numerals wherever possible. In addition, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

1 is a block diagram of a mobile communication terminal according to an embodiment of the present invention.

Referring to FIG. 1, a mobile communication terminal 100 according to an exemplary embodiment of the present invention includes a control unit 2, a wireless unit 4, a display unit 6, a key input unit 8, an audio unit 10, and a buffer 12. ), The sound source chip 14, the speaker 16, the microphone 18, and the memory unit 20.

The controller 2 controls the overall operation of the mobile communication terminal 100, performs a control operation when setting the music playing mode according to an embodiment of the present invention, and performs a control operation in the music playing mode and the stored audio file editing mode. do. That is, the controller 2 performs a control operation when setting the music playing mode according to the user's request, and if the corresponding key input data is input in the music playing mode, the control unit 2 corresponds to the music corresponding to the corresponding key input according to the preset music playing mode setting contents. Outputs In addition, the control unit 2 stores the music content output according to a user's request as an audio file such as a MIDI, and performs a control operation required to edit the audio file selected by the user among the stored audio files in the stored audio file editing mode. . The MIDI is a protocol designed for recording or playing music through electronic devices. It is a type of audio file, and is an international standard for data transmission and reception compatibility between electronic instruments. Since the MIDI does not directly express the sound of the music but only expresses information on how the music is made, the MIDI may be simply used in the mobile communication terminal 100 to provide an additional service related to music such as a ringtone service.

The radio unit 4 controls transmission and reception of voice data and control data under the control of the control unit 2. The audio unit 10, under the control of the control unit 2, converts the audio data received from the radio unit 4 into an audible sound through a speaker 16 and outputs the audible sound, which is received from the microphone 18. The audio signal is converted into data and output to the wireless unit 4.

The buffer 12 is a temporary data storage device and temporarily stores music played in a music playing mode and a stored audio file editing mode according to an embodiment of the present invention under the control of the controller 2.

The sound source chip 14 converts the input sound data into an analog signal that can be heard by the user when the sound data of an audio file such as a MIDI is input from the controller 2 and outputs the sound data. According to an embodiment of the present invention, the sound source chip 14 is preferably a high-performance sound source chip for outputting tones such as piano, guitar, drums, and the like in the original tone.

The memory unit 20 may include a read only memory (ROM) and a random access memory (RAM) for storing a plurality of programs and data, and a program necessary for performing music performance and storing and editing stored audio files. And store the data. The memory unit 20 may include a music playing mode setting data storage unit 22, a program storage unit 24, and an audio file storage unit 26 according to an embodiment of the present invention. The program storage unit 24 stores a program for performing music performance and storing and editing a stored audio file according to an embodiment of the present invention. The music playing mode setting data storage unit 22 stores various musical instrument type, key mapping, playing method, and accompaniment type data corresponding to the music playing mode setting, and stores music playing mode contents set under the control of the controller 2. . The audio file storage unit 26 stores music played by the user under the control of the controller 2 or music temporarily stored in the buffer 12 as an audio file such as a MIDI.

The display unit 6 may be formed of a liquid crystal display (LCD) or the like, and outputs various display data generated in the terminal. The display unit 6 displays a screen necessary for setting a music playing mode and editing a stored audio file according to an exemplary embodiment of the present invention.

The key input unit 8 is a device for interfacing with a user and includes a plurality of keys such as various function keys, numeric keys (0 to 9), special keys (*, #), and the like. The key input unit 8 outputs key input data corresponding to the corresponding key when the corresponding key is pressed by the user in setting the music playing mode and editing the music performance and the stored audio file according to the embodiment of the present invention.

The mobile communication terminal 100 according to the embodiment of the present invention as described above performs a music playing mode setting in advance according to a user's request, and if there is a key input using keys provided in the key input unit 8 from the user in advance. Play music according to the set music playing mode. In addition, the mobile communication terminal 100 according to an embodiment of the present invention may store the played music content as an audio file such as a MIDI according to a user's request, and edit the stored audio file. The mobile communication terminal 100 according to an embodiment of the present invention may transmit the stored audio file to the mobile communication terminal 100 of another user, and receive and store the audio file from the mobile communication terminal 100 of another user. have.

2 is a diagram illustrating a state in which a sub body of the mobile communication terminal 100 according to an embodiment of the present invention is opened and closed on a main body. 2 illustrates a folder type mobile communication terminal 100 as an example of a mobile communication terminal 100 and 100 according to an exemplary embodiment of the present invention.

3 is a control flowchart when setting a music playing mode in the mobile communication terminal 100 according to an embodiment of the present invention, and FIG. 4 is a display unit when setting a music playing mode in the mobile communication terminal 100 according to an embodiment of the present invention. It is an example of the screen displayed on 6).

1 to 4, a process in which the mobile communication terminal 100 sets a music playing mode in advance through an interface with a user will be described in detail with reference to FIGS. 1 to 4.

The controller 2 determines whether there is a music playing mode setting request from the user in step 200 of FIG. 3. As shown in FIG. 2, the user may request a music playing mode setting by manipulating a key provided in the key input unit 8. If the user requests the music playing mode setting, the controller 2 proceeds to step 202 of FIG. 3 and displays items corresponding to the music playing mode setting. The items corresponding to the music playing mode setting may be, for example, "instrument type", "key mapping", "playing method", and accompaniment type "items as shown in Fig. 4A. It is an item for selecting the type of musical instrument to be played in the music playing mode, and the "key mapping" item is for mapping a corresponding sound to each of the keys provided in the key input unit 8. The "playing method" item is used for music playing. This item is used to select the type of performance to be played in the music mode.

The controller 2 displays the items corresponding to the music playing mode setting as described above on the display unit 6, and then checks whether there is an instrument type item selection from the user in step 202 of FIG. 3. The user may select an instrument type item among items corresponding to the music playing mode setting displayed on the display unit 6 by using a key provided in the key input unit 8. If the user selects a musical instrument type item, the controller 2 proceeds to step 206 to display various musical instrument types. Various musical instrument types may be "piano", "guitar", "plot", "bass", etc., as shown in FIG. The controller 2 displays various types of musical instruments as described above, and then checks whether the user selects the musical instruments in step 208. If the user selects an instrument to play, the control unit 2 proceeds to step 210 and stores the selected instrument. That is, the controller 2 sets the selected instrument as a playing instrument and stores it in the music playing mode setting data storage unit 24.

In addition, the controller 2 displays items corresponding to the music playing mode setting on the display unit 6, and then checks whether there is a key mapping item selection from the user in step 214. The user may select a key mapping item among items corresponding to the music playing mode setting displayed on the display unit 6 by using a key provided in the key input unit 8. If the user selects a key mapping item, the controller 2 proceeds to step 214 and performs key mapping corresponding to the key stored in advance through the user interface. That is, as shown in FIG. 2, the control unit 2 stores the music playing mode setting data storage unit 24 in each of the keys provided in the key input unit 8, for example, numeric keys of 0 to 9 and special keys of * / #. Corresponds to previously stored key mapping data. The key mapping data stored in the music playing mode setting data storage unit 24 of the mobile communication terminal 100 may be, for example, basic data, download data, external input data, and the like, as shown in FIG. The basic data is key mapping data stored in the music playing mode setting data storage 24 when the terminal is manufactured, and the download data is key mapping data downloaded and stored from a website or another mobile communication terminal 100. The external input data is sound data input and stored from the outside. The external input data is key mapping data obtained by sampling and storing a sound inputted from the outside by the mobile communication terminal 100, for example, a clock alarm sound " pumping ", etc. Data of QCELP (Qualcomm Code Excided Linear Prediction) data or MIDI format file format And so on. The control unit 2 performs key mapping through mapping the pre-stored key mapping data, such as "splung", to each of the keys provided in the key input unit 8, for example, numeric keys 0 to 9 and special keys * / #, through an interface with a user. In operation 218, it is determined whether key mapping is completed. If there is a key input corresponding to the completion of the key mapping from the user, the controller 2 stores the key mapping contents in the music playing mode setting data storage 24 in step 220.

 The controller 2 displays the items corresponding to the music playing mode setting on the display unit 6, and then checks whether there is a playing method item selection from the user in step 222. If the user selects a playing method item, the controller 2 proceeds to step 224 and displays various playing methods on the display unit 6. At this time, the various playing methods displayed on the display unit 6 may be "octave", "vibration", "sliding", or the like as shown in FIG. "Octave" is the playing method of playing the music lower or higher by the octave of the note that is mapped to each key. It is a way of playing (while outputting high notes and low semitones). "Sliding" is a performance that sets the beginning and ending of the notes mapped to each key when playing music, and plays them continuously in quick time from the beginning to the end. For example, one octave (high to low) on an instrument such as a harp. It is a way of playing scraping off in a short time. The controller 2 displays various playing methods on the display unit 6, and then checks whether the user selects a playing method in step 226. If the user selects a playing method, the controller 2 proceeds to step 228 and stores the selected playing method in the music playing mode setting data storage unit 24.

On the other hand, the controller 2 displays the items corresponding to the music playing mode setting on the display unit 6 and checks whether there is an accompaniment type item selection from the user in step 230. When the user selects the accompaniment type item, the control unit 2 proceeds to step 232 and displays various kinds of accompaniment types on the display unit 6. In this case, various kinds of accompaniment displayed on the display unit 6 may be, for example, "rock accompaniment", "classic accompaniment", "jazz accompaniment", "dance accompaniment", and the like. The "rock accompaniment" is to allow the music of the rock type to be played in accompaniment in the music playing mode. “Classic accompaniment” is to allow classical music to be played as accompaniment in the music playing mode. "Jazz accompaniment" is to allow jazz type music to be played as accompaniment in the music playing mode. "Dance accompaniment" means that dance-style music is played as accompaniment in the music playing mode. "No accompaniment" means that the accompaniment is not played in the music playing mode. The control unit 2 displays the various types of accompaniment as described above on the display unit 6, and then checks whether the user selects the accompaniment in step 234. When the user selects the accompaniment type, the controller 2 proceeds to step 236 of FIG. 3 and stores the selected accompaniment in the music performance mode setting data storage 24 to be played in the music performance mode.

As described above, when the selected instrument type, key mapping, playing method, and accompaniment type are stored in the music playing mode setting data storage unit 24, the mobile communication terminal 100 according to the previously stored instrument type, key mapping, playing method, and accompaniment type. You can play music. The played music may be stored in the audio file storage 26 as an audio file such as a MIDI.

5 is a control flowchart when playing music in the mobile communication terminal 100 according to an exemplary embodiment of the present invention.

Hereinafter, a process in which the mobile communication terminal 100 enters a music playing mode to play music and stores the played music will be described in detail with reference to FIGS. 1 to 5.

The controller 2 determines whether there is a music playing mode entry request in step 300 of FIG. 5. In this case, the controller 2 enters the music playing mode in step 302 when a user inputs a shortcut key corresponding to entry of the music playing mode included in the key input unit 8 or selects a music playing mode menu on the menu screen.

After entering the music playing mode, the controller 2 determines whether there is music playing from the user in step 304. That is, the controller 2 determines whether there is a corresponding key input among the keys provided in the key input unit 8 as shown in FIG. 2 from the user. If there is a corresponding key input from the user, the control unit 2 proceeds to step 306 in accordance with the music playing mode setting contents previously stored in the music playing mode setting data storage unit 24 and stores the music played in the buffer 12. Save temporarily. For example, when the user presses the number 1 key among the keys provided in the key input unit 8, the controller 2 transmits the key mapping data pre-mapped to the number 1 key to the sound source chip 14 according to the previously stored performance mode setting. And store it temporarily in the buffer 12. At this time, the sound source chip 14 converts the key mapping data transmitted from the control unit 2 into an analog signal that can be directly heard by the user and outputs the same through the speaker 16.

Then, the controller 2 determines whether there is a music storage request played by the user in step 308 while temporarily storing the music played in the buffer 12 according to the music playing mode setting contents stored in advance through the interface with the user. . If there is a music storage request from the user, the controller 2 proceeds to step 310 and stores the played music as an audio file such as a MIDI file. That is, the controller 2 stores the music temporarily stored in the buffer 12 in the audio file storage 26 as an audio file such as a MIDI.

Meanwhile, according to an exemplary embodiment of the present invention, the mobile communication terminal 100 may store the audio file in the audio file storage unit 26 and edit the stored audio file through an interface with the user as described above.

6 is an operation control flowchart when editing an audio file stored in the mobile communication terminal 100 according to an embodiment of the present invention, and FIG. 7 is a display unit when editing an audio file stored in the mobile communication terminal 100 according to an embodiment of the present invention. It is an example of the screen displayed on (6). That is, FIG. 7A illustrates an example of a stored audio file list screen, and FIG. 7B illustrates an example of a screen displayed when playing an audio file selected by a user among stored audio files.

1 to 7, the mobile communication terminal 100 according to an embodiment of the present invention enters a stored audio file editing mode according to a user's request and edits the stored audio file in the stored audio file editing mode. It explains in detail.

The controller 2 determines whether there is a stored audio file editing mode entry request in operation 400 of FIG. 6. If a user inputs a shortcut key corresponding to entry of the stored audio file editing mode from the user or selects a stored audio file editing mode menu on the menu screen, the user enters the stored audio file editing mode in step 402 and displays a list of stored audio files. For example, the stored audio file name may be displayed in the list of stored audio files as shown in FIG. According to an embodiment of the present invention, the audio file such as "school bell" may be stored in the audio file storage 26 when the terminal is manufactured or played by a user or downloaded from a website or another terminal.

After displaying the stored audio file list on the display unit 6 as described above, the controller 2 determines whether there is an audio file to be edited by the user in step 404. If the user selects an audio file to be edited among the stored audio files displayed on the display unit 6, the controller 2 proceeds to step 406 to buffer the music played while playing the music corresponding to the selected audio file. Save it temporarily). That is, when the user selects an audio file to be edited among the stored audio files displayed on the display unit 6, the controller 2 can directly listen to music corresponding to the selected audio file through the sound source chip 14. Audible sound output. The controller 2 temporarily stores the output music in the buffer 12. The controller 2 may display that the music corresponding to the selected audio file is being played on the display unit 6 when the music corresponding to the selected audio file is played. For example, the controller 2 may display, for example, a simple sheet music 50 and a time bar 52 on the display unit 6 when the selected audio file is played as shown in FIG. 7B.

The controller 2 checks whether there is a music performance from the user in step 408 while temporarily playing the music corresponding to the selected audio file and temporarily storing the music being played in the buffer 12. That is, the controller 2 determines whether there is a corresponding key input from the user while temporarily playing the music corresponding to the selected audio file and temporarily storing the played music in the buffer 12. If there is a corresponding key input from the user, the controller 2 temporarily stores the music played in the buffer 12 while playing the music corresponding to the audio file selected in step 410 and the music mapped to the corresponding key input by the user. do.

Meanwhile, the controller 2 determines whether there is a music stop request from the user in step 412 while temporarily playing the music corresponding to the selected audio file and temporarily storing the played music in the buffer 12. If there is a request to stop playing music from the user, the controller 2 proceeds to step 414 to stop playing music corresponding to the selected audio file. Then, the controller 2 determines whether there is music performance from the user in step 416. That is, the controller 2 determines whether there is a corresponding key input from the user. If there is a corresponding key input from the user, the controller 2 proceeds to step 418 of FIG. 6 to output music corresponding to the corresponding key input and temporarily stores the output music in the buffer 12. At this time, the music played by the user is subsequently stored in the buffer 12 in the music corresponding to the selected audio file. Then, the controller 2 determines whether there is a request for editing of an audio file from the user in step 420. If there is a key input corresponding to the completion of editing of the audio file from the user, the controller 2 proceeds to step 422 and stores the music temporarily stored in the buffer 12 in the audio file storage 26.

In the above description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be defined by the described embodiments, but should be determined by the equivalent of claims and claims.

As described above, the mobile communication terminal of the present invention enables the user to play music by setting an appropriate instrument type, key mapping, a playing method, and an accompaniment type, so that the user can join the user of other terminals. In addition, the mobile communication terminal of the present invention enables the user to save the content played by the audio file, to edit the stored audio file, and to exchange the stored audio file with another user's mobile communication terminal. This increases the usefulness of the audio content in the mobile communication terminal and provides the user with pleasure. Therefore, the present invention can maximize the efficiency of the use of the terminal, increase the utilization of the audio file in the mobile communication terminal and satisfy the user's desire to play and edit music.

1 is a block diagram of a mobile communication terminal according to an embodiment of the present invention;

2 is a diagram illustrating a state in which a sub body of a mobile communication terminal is opened and closed on a main body according to an exemplary embodiment of the present invention.

3 is a control flowchart of setting a music playing mode in a mobile communication terminal according to an embodiment of the present invention;

4 is an example of a screen displayed on the display unit when the music playing mode is set in the mobile communication terminal according to an embodiment of the present invention;

5 is a control flowchart when playing music in a mobile communication terminal according to an embodiment of the present invention;

6 is a flowchart illustrating an operation control when editing a stored audio file in a mobile communication terminal according to an exemplary embodiment of the present invention.

7 illustrates an example of a screen displayed on a display unit when editing a stored audio file in a mobile communication terminal according to an exemplary embodiment of the present invention.

Claims (11)

In the mobile communication terminal for playing and editing music, A key input unit including a plurality of keys for setting a music playing mode and for playing music and editing a stored audio file, and outputting key input data corresponding to a key pressed by a user; A memory unit for storing a program and data for setting the music playing mode and editing the music playing and stored audio files; A buffer for temporarily storing music played in the music playing mode and the stored audio file editing mode; When the key corresponding to the music playing mode setting is input by the user, the music playing mode is set and stored.When the key corresponding to the music playing is input by the user, the music is played while playing the music according to the preset music playing mode setting contents. Temporarily stores the music in the buffer, and if there is a request for storing music played by the user, temporarily stores the music stored in the buffer as an audio file, and when a key corresponding to the editing of the audio file stored by the user is inputted, A controller for editing and storing the stored audio file; A sound source chip for converting music played under a predetermined control into an analog signal that can be heard by the user and outputting the original sound; And a display unit for displaying the music playing mode setting screen and the stored audio file editing screen. The method of claim 1, wherein the memory unit, A program storage unit for storing programs for playing and storing music and editing stored audio files; A music playing mode setting data storage unit for storing instrument type, key mapping, playing method, and accompaniment type data corresponding to the music playing mode setting, and storing contents of the music playing mode set under predetermined control; And an audio file storage unit for storing the music played by the user and the music temporarily stored in a buffer as an audio file. In the method of playing and editing music in a mobile communication terminal having a sound source chip for playing music, Performing a music playing mode setting through an interface with a user and storing the music playing mode setting contents in the music playing mode setting data storage unit; A second process of performing music performance according to the pre-stored music performance mode setting contents when the user requests a music performance, and storing the played music as an audio file in the audio file storage, when a music storage request from the user is requested; And a third process of editing the stored audio file through the interface with the user and storing the stored audio file in the audio file storage if a user requests to edit the stored audio file. The method of claim 3. The first process, A first step of displaying items corresponding to the music playing mode setting when a user requests the music playing mode setting; A second step of, if the user selects an instrument type item among the items corresponding to the music playing mode setting and selects one of the various instruments corresponding to the instrument type item, storing the selected instrument as a playing instrument; A third step of performing keymapping using prestored keymapping data when the user selects a keymapping item and performs key manipulation to perform keymapping; A fourth step of storing the selected playing method when the user selects a playing method item and selects one of the playing methods corresponding to the playing method item; And when the user selects an accompaniment type item and selects an accompaniment of various accompaniment types corresponding to the accompaniment type item, a fifth step of storing the selected accompaniment type is performed in the mobile communication terminal. The method of claim 4, wherein The various musical instrument types include at least a piano, a guitar, a plot, and a bass. The method of claim 4, wherein The key mapping data is any one of key mapping data previously stored in a memory when the mobile communication terminal is manufactured, a website, key mapping data downloaded from another mobile communication terminal, and stored in the memory in advance, and key mapping data stored and input from the outside by a user. How to play and edit music on the mobile terminal. The method of claim 4, wherein The method of playing and editing music in the mobile communication terminal, characterized in that at least octave, vibration, sliding at least. The method of claim 4, wherein The various types of accompaniment include music accompaniment, rock accompaniment, classical accompaniment, jazz accompaniment, dance accompaniment, at least no accompaniment method. The method of claim 3, wherein the second process, A first step of entering the music playing mode when a user requests to enter the music playing mode; When the user plays the music, the second step of playing the music according to the preset music playing mode settings and temporarily storing the music being played in the buffer; And a third step of storing the music temporarily stored in the buffer as an audio file when there is a request for storing the music played by a user. The method of claim 9, And the audio file is a MIDI file. The method of claim 3, wherein the third process comprises: A first step of entering a stored audio file editing mode and displaying a list of stored audio files when a user requests to enter a stored audio file editing mode; A second step of playing music corresponding to the selected audio file and temporarily storing the played music in a buffer when a user selects an audio file to be edited from the stored audio file list; A third step of playing the music corresponding to the selected audio file and the music by the user's input together with the key input corresponding to the music playing from the user during the second step, and temporarily storing the played music in a buffer; , A fourth step of stopping the performance of the second step and temporarily storing the music of the user's input in a buffer if there is a key input corresponding to the stopping of the performance from the user during the second step; And a fifth step of storing the music temporarily stored in the buffer as an audio file when the audio file editing request is completed from the user.