Device For Recording Guitar Performing Notes, And Method Thereof

Abstract

A guitar performance note recording device and a recording method thereof are provided. A guitar performance note recording device according to an embodiment of the present invention may include: a fingering point calculation unit that applies an output signal to a guitar string and calculates a fret number and a guitar string number based on a ground signal generated at a fret according to a fingering point input by a user; a note length calculation unit that calculates the length of a note according to a voltage waveform signal of a sound converted from a pickup coil of a guitar; and a note conversion unit that converts the fret number, the guitar string number calculated by the fingering point calculation unit, and the note length calculated by the note length calculation unit into note data.

Description

Technology Field

[0001] The present invention relates to a guitar performance note recording device and a recording method thereof, and in particular, to a guitar performance note recording device and a recording method thereof that records notes while minimizing deformation of the instrument guitar and without interfering with the guitar performance, and reduces errors occurring when recording multiple notes according to physical fingering signals generated while the performer plays the guitar, thereby improving the speed and accuracy of the recording. Background Technology

[0002] Conventional performance transcription technology utilizes a method of converting audio signals collected through microphones into digital form for processing. However, this microphone-based audio signal processing method is vulnerable to ambient noise and electromagnetic interference, making it difficult to collect accurate sound data. Consequently, noise is generated, and the quality of the sound collected from the guitar varies significantly depending on the performance environment. Furthermore, additional preprocessing operations are required to remove noise. In addition, this extra computation leads to delays in sound processing.

[0003] In particular, when multiple notes are input simultaneously in string instruments, many errors occur during the recording process. In this case, when multiple notes are input simultaneously, there are limitations such as signal distortion caused by the superposition of sound waves during the frequency analysis of the acoustic signal, reduced accuracy in identifying notes due to frequency interference, or difficulty in extracting the fundamental frequency due to harmonic components.

[0004] Therefore, there is a need for measures to improve the speed and accuracy of musical instrument transcription. Prior art literature

[0005] (Patent Document 0001) KR 10-1836332 B1 The problem to be solved

[0006] In order to solve the problems of the conventional technology described above, one embodiment of the present invention aims to provide a guitar performance note recording device and a recording method that can improve the speed and accuracy of performance transcription by calculating fret numbers, guitar string numbers, note lengths, and note intensities based on physical fingering signals generated while playing a guitar, and converting them into notes to reduce errors occurring when recording multiple notes. means of solving the problem

[0007] According to one aspect of the present invention for solving the above problems, a guitar playing note recording device is provided, comprising: a fingering point calculation unit that applies an output signal to a guitar string and calculates a fret number and a guitar string number based on a ground signal generated at a fret according to a fingering point input by a user; a note length calculation unit that calculates the length of a note according to a voltage waveform signal of a sound converted from a pickup coil of the guitar; and a note conversion unit that converts the fret number, the guitar string number calculated by the fingering point calculation unit, and the length of the note calculated by the note length calculation unit into note data.

[0008] In one embodiment, a score generation unit that generates a tablature based on the converted note data may be further included.

[0009] In one embodiment, the finger point calculation unit may be equipped with M output terminals connected to the strings of the instrument guitar to transmit electrical signals and N input terminals connected to one side of the frets of the guitar neck.

[0010] In one embodiment, the finger position calculation unit can sequentially scan the guitar lines at a preset period and detect the ground signal generated for each guitar line to calculate at least one finger position.

[0011] In one embodiment, the sound length calculation unit determines the point where the increase in amplitude from the sound voltage waveform signal is greater than or equal to a first threshold value as the start point of the sound, and determines the point where the amplitude after the start of the sound becomes less than or equal to a second threshold value as the end point of the sound, calculates the time difference between the start point of the sound and the end point of the sound to calculate the sound length, and calculates the slope corresponding to the average change amount of the amplitude as the sound intensity.

[0012] According to another aspect of the present invention, a method for recording guitar playing notes is provided, comprising: a fingering point calculation step of applying an output signal to a guitar string and calculating a fret number and a guitar string number based on a ground signal generated at a fret according to a fingering point input by a user; a note length calculation step of calculating a note length according to a voltage waveform signal of a sound converted from a pickup coil of the guitar; and a note conversion step of converting the fret number, the guitar string number, and the note length into note data.

[0013] In one embodiment, a score generation step of generating a tablature based on the converted note data may be further included.

[0014] In one embodiment, the fingering point calculation step can sequentially scan the guitar strings at a preset period and detect the ground signal generated for each guitar string to calculate at least one fingering position.

[0015] In one embodiment, the sound length calculation step determines the point where the increase in amplitude from the sound voltage waveform signal is greater than or equal to a first threshold value as the start point of the sound, and determines the point where the amplitude after the start of the sound becomes less than or equal to a second threshold value as the end point of the sound, calculates the time difference between the start point of the sound and the end point of the sound to calculate the sound length, and calculates the slope corresponding to the average change amount of the amplitude as the sound intensity.

[0016] According to another aspect of the present invention, a computer-readable recording medium is provided that stores a program for implementing a method for recording other musical notes as described above. Effects of the invention

[0017] A guitar performance note recording device and a recording method according to one embodiment of the present invention are mounted on a guitar instrument and collect physical contact fingering signals generated while a player plays the guitar and convert them into notes, thereby reducing the difficulty and amount of conversion computation and reducing errors that occur when recording multiple notes, which can improve the speed and accuracy of recording.

[0018] In addition, the guitar playing note recording device and the recording method according to one embodiment of the present invention include a fingering point calculation unit having M output terminals connected to the strings of the guitar instrument to transmit electrical signals and N input terminals connected to one side of the frets of the guitar neck, thereby directly detecting the fingering position using a physical contact method and minimizing signal processing delay.

[0019] In addition, the guitar playing note recording device and the recording method according to one embodiment of the present invention include a finger point calculation unit comprising a flexible printed circuit board (FPCB), thereby allowing for free application to the curved shape of the guitar while minimizing deformation of the guitar, and thus improving the ease of mounting the device.

[0020] In addition, the guitar performance note recording device and the recording method according to one embodiment of the present invention can improve the accuracy of real-time performance recording by collecting accurate fingering points based on ground signals generated according to a plurality of fingering points input by a user, thereby enabling accurate fingering points to be collected.

[0021] In addition, the guitar performance note recording device and the recording method according to one embodiment of the present invention sequentially scan guitar strings at a preset cycle and detect ground signals generated for each guitar string to calculate at least one finger position, thereby enabling accurate collection of multiple notes even when multiple notes are input simultaneously, thus improving the reliability of the performance recording.

[0022] In addition, the guitar performance note recording device and the recording method according to one embodiment of the present invention determine the start and end points of a sound based on a voltage waveform signal of a sound converted from a pickup coil of a guitar instrument to calculate the length of the sound, and calculate the sound intensity by calculating a slope corresponding to the average change in amplitude, thereby enabling the quantitative quantification and recording of detailed performance characteristics such as the length of the sound, sound intensity, and vibrato information, and allowing the collected sound information to be expressed in a diverse and delicate manner.

[0023] In addition, the guitar performance note recording device and the recording method according to one embodiment of the present invention can generate accurate beat information that matches the performance tempo by integrating the calculated fret number, guitar string number, note length, and note intensity into note data, and can easily generate tablature based on a standardized note data format based on standardized musical notation.

[0024] In addition, the guitar performance note recording device and the recording method according to one embodiment of the present invention can improve the ease of reading the score by generating a tablature based on converted note data, thereby allowing the performer to intuitively grasp the accurate fingering position. Brief explanation of the drawing

[0025] FIG. 1 is a configuration diagram of a guitar playing note recording device according to one embodiment of the present invention. FIG. 2 is a block diagram of a guitar playing note recording device according to one embodiment of the present invention. FIG. 3 is a configuration diagram of a finger point calculation unit of a guitar playing note recording device according to one embodiment of the present invention. FIG. 4 is an example of a musical score generated by a guitar performance note recording device according to one embodiment of the present invention. FIG. 5 is a flowchart of a method for recording guitar playing notes according to one embodiment of the present invention. Specific details for implementing the invention

[0026] Hereinafter, embodiments of the present invention are described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. The present invention may be embodied in various different forms and is not limited to the embodiments described herein. In the drawings, parts unrelated to the explanation have been omitted to clearly explain the present invention, and the same reference numerals have been used for identical or similar components throughout the specification.

[0027] Hereinafter, a guitar performance note recording device and a recording method according to an embodiment of the present invention will be described in more detail with reference to the drawings.

[0028] FIG. 1 is a configuration diagram of a guitar playing note recording device according to one embodiment of the present invention.

[0029] Referring to FIG. 1, the guitar performance note recording device (100) is a device for transcribing guitar performance, and is mounted on the instrument guitar (10) to collect physical contact fingering signals generated while a player plays the guitar (10) and convert them into musical notes.

[0030] At this time, the guitar performance note recording device (100) is mounted on the guitar strings, neck (N), and pickup (P) located on the bridge (B) of the guitar (10) to collect and record performance data in an integrated manner. Additionally, the guitar performance note recording device (100) can detect and collect the fingering position of the player by applying electricity to the guitar strings. Furthermore, the guitar performance note recording device (100) is connected to the pickup (P) and can calculate the length and intensity of the sound by collecting information that converts the vibration of the guitar strings into an electrical signal from the pickup (P). Additionally, the guitar performance note recording device (100) can generate tablature based on the calculated sound information to notate the performance.

[0031] The instrument guitar (10) can be combined with a guitar playing note recording device (100). At this time, the instrument guitar (10) may include an acoustic guitar and an electric guitar.

[0032] The user terminal (20) can input performance tempo information of a piece of music. Here, the performance tempo information may include beat or BPM (Beats Per Minute) information. Additionally, the user terminal (20) can display a musical score generated by the guitar performance note recording device (100). At this time, the user terminal (20) may be connected to the guitar performance note recording device (100) via a wired or wireless communication network. For example, the user terminal (20) may be a wireless communication electronic device such as a smartphone, laptop, or smartpad, or a wired communication electronic device such as a desktop.

[0033] FIG. 2 is a block diagram of a guitar performance note recording device according to one embodiment of the present invention, FIG. 3 is a configuration diagram of a finger point calculation unit of a guitar performance note recording device according to one embodiment of the present invention, and FIG. 4 is an example of a musical score generated by a musical score generation unit of a guitar performance note recording device according to one embodiment of the present invention.

[0034] Referring to FIG. 2, the guitar playing note recording device (100) may include a control unit (120) and a storage unit (130). At this time, the control unit (120) can calculate fingering points, collect electrical signals of sounds converted from guitar pickup coils (P) to calculate the length of the sound and convert it into note data, and finally generate a tablature for guitar playing.

[0035] At this time, the control unit (120) may include a finger point calculation unit (122), a note length calculation unit (124), a note conversion unit (126), and a score generation unit (128).

[0036] The finger point calculation unit (122) may be equipped with M output terminals that transmit electrical signals connected to guitar strings located on the bridge (B) of the instrument guitar. At this time, the finger point calculation unit (122) may apply output signals for each guitar line. Here, the number of output terminals may correspond to the number of guitar strings.

[0037] Additionally, the fingering point calculation unit (122) may be equipped with N input terminals connected to one side of the fret (14) of the guitar neck, as shown in FIG. 3. At this time, the fingering point calculation unit (110) may receive a ground signal generated from the fret (14) according to the fingering point entered by the user. Here, the number of input terminals may correspond to the number of guitar frets (14).

[0038] In this way, a guitar playing note recording device (100) according to one embodiment of the present invention includes a fingering point calculation unit having M output terminals connected to the strings of the guitar instrument to transmit an electrical signal and N input terminals connected to one side of the fret (14) of the guitar neck, thereby directly detecting the fingering position using a physical contact method and minimizing signal processing delay.

[0039] Additionally, the finger point calculation unit (110) may include a flexible printed circuit board (FPCB). Accordingly, the finger point calculation unit (110) can be mounted regardless of the shape of the curved guitar (10).

[0040] In this way, the guitar playing note recording device (100) according to one embodiment of the present invention includes a finger point calculation unit including a flexible printed circuit board (FPCB), thereby allowing it to be freely applied to the curved shape of the guitar while minimizing deformation of the guitar, and thus improving the ease of mounting the device.

[0041] Additionally, the fingering point calculation unit (110) can sequentially scan guitar strings (16) at a preset cycle. For example, the fingering point calculation unit (110) can sequentially transmit electrical signals from the first guitar string to the last guitar string through an output terminal. Here, the fingering point calculation unit (110) can activate scanning of guitar strings at a speed capable of identifying multiple notes being fingered simultaneously. For example, the fingering point calculation unit (110) can sequentially apply electricity to each guitar string (16) at a speed of 100KHz. At this time, the fingering point calculation unit (110) can detect fingering of the corresponding guitar string by performing a logical operation on the output signal of the guitar string.

[0042] Additionally, the fingering point calculation unit (110) can receive ground signals of guitar strings (16) and frets (14) generated by the user's fingering as input signals. At this time, the fingering point calculation unit (110) can detect ground signals of each fret and guitar string through the input terminal. At this time, the fingering point calculation unit (110) can simultaneously detect ground signals from the first fret to the last fret. Accordingly, the fingering point calculation unit (110) can identify fingering points based on the detected ground signals. At this time, the fingering point calculation unit (110) can detect multiple grounded guitar strings within the corresponding fret by performing a logical operation. Accordingly, the fingering point calculation unit (110) can detect ground signals of multiple guitar strings in the corresponding fret section by sequentially scanning each guitar string. That is, the fingering point calculation unit (110) can rapidly scan the guitar strings at a preset cycle and detect ground signals generated for each guitar string to calculate at least one fingering position. At this time, the fingering point calculation unit (110) can determine the fingering position by detecting points that are fingered simultaneously, that is, multiple output signals generated simultaneously. By doing so, the fingering point calculation unit (110) can calculate multiple notes simultaneously.

[0043] In this way, the guitar performance note recording device (100) according to one embodiment of the present invention sequentially scans guitar strings at a preset cycle and detects ground signals generated for each guitar string to calculate at least one finger position, thereby enabling accurate collection of multiple notes even when multiple notes are input simultaneously, thus improving the reliability of the performance recording.

[0044] Additionally, the fingering point calculation unit (110) can calculate the number of the fret (14) and the number of the guitar string (16) based on the detected ground signal. Additionally, the fingering point calculation unit (110) can store the calculated number of the fret (14) and the number of the guitar string (16) in the storage unit (130).

[0045] At this time, the fingering point calculation unit (110) can calculate a single note produced by fingering in one section (15) as the number of the fret (14) where the ground signal is generated and the number of the guitar string (16). For example, when the fingering point calculation unit (110) detects a ground signal of the first fingering point (2nd string, 1st fret) from the fingering point calculation unit (110), the number of the guitar string (16) can be calculated as 2 and the number of the fret (14) as 1.

[0046] Additionally, the fingering point calculation unit (110) can calculate multiple sounds generated by fingering multiple points in one section (15) as fret (14) numbers and guitar string (16) numbers. For example, when the fingering point calculation unit (110) detects a ground signal at the first fingering point (2nd string, 2nd fret) and a ground signal at the second fingering point (4th string, 2nd fret), the guitar string number and fret (14) number can be calculated as (2,2) and (4,2), respectively.

[0047] In addition, the fingering point calculation unit (110) can calculate multiple sounds generated by fingering multiple points in multiple sections (15) as fret (14) numbers and guitar string (16) numbers. For example, when the fingering point calculation unit (110) detects a ground signal of (2nd string, 3rd fret) as the first fingering point, a ground signal of (3rd string, 4th fret) as the second fingering point, and a ground signal of (5th string, 2nd fret) as the third fingering point, the guitar string (16) number and fret (14) number can be calculated as (2,3), (3,4), and (5,2), respectively.

[0048] In this way, the guitar performance note recording device (100) according to one embodiment of the present invention can improve the accuracy of real-time performance recording by collecting accurate fingering points based on ground signals generated according to a plurality of fingering points input by a user, thereby generating fret numbers and guitar string numbers.

[0049] The sound length calculation unit (124) can calculate the sound length based on the sound voltage waveform signal converted from the pickup coil (P) of the instrument guitar. At this time, the sound length calculation unit (124) can analyze the sound voltage waveform signal that is converted digitally by the pickup coil (P) from the analog signal generated by the vibration of the guitar string (16). In addition, the sound length calculation unit (124) can detect voltage changes according to changes in sound. For example, the sound length calculation unit (124) can collect a voltage waveform signal with a small amplitude from the pickup coil when a small sound is produced by the guitar string vibrating slightly. In addition, the sound length calculation unit (124) can collect and analyze a voltage waveform signal with a large amplitude from the pickup coil when a loud sound is produced by the guitar string vibrating strongly.

[0050] Additionally, the sound length calculation unit (124) can calculate the length of the sound. At this time, the sound length calculation unit (124) can determine the starting point of the sound from the amplitude change value of the voltage. Additionally, the sound length calculation unit (124) can determine the starting point of the sound as the point where the increase in amplitude in the voltage waveform signal is greater than or equal to a preset first threshold value.

[0051] In addition, the sound length calculation unit (124) can determine the point where the amplitude becomes less than or equal to a preset second threshold after the start of the sound as the end point of the sound. For example, the sound length calculation unit (124) can determine the point where the vibration of the guitar string (16) is attenuated and falls below a specific level.

[0052] Additionally, the sound length calculation unit (124) can calculate the sound length by measuring the duration of the sound by calculating the time difference between the start time of the sound and the end time of the sound. Furthermore, the sound length calculation unit (124) can calculate the sound intensity by a slope corresponding to the average change in amplitude at each time interval. For example, if the sound length calculation unit (124) calculates the slope value corresponding to the average change in amplitude at each time interval as +3, it can store +3 as the sound intensity in the storage unit (130). By doing so, the sound length calculation unit (124) can quantitatively record the intensity of the played sound by quantifying the average change in amplitude as the sound intensity.

[0053] In addition, the sound length calculation unit (124) can detect the vibrato of the sound and additionally store vibrato identification information as information of the sound. At this time, the sound length calculation unit (124) can identify whether there is vibrato by calculating the amount of pitch change representing the depth information of the vibrato and the speed at which the pitch changes representing the speed information of the vibrato from the voltage waveform signal.

[0054] In this way, the guitar performance note recording device (100) according to one embodiment of the present invention determines the start time and end time of the sound based on the voltage waveform signal of the sound converted from the pickup coil of the instrument guitar to calculate the length of the sound, and calculates the slope corresponding to the average change amount of the amplitude as the intensity of the sound, thereby enabling the quantitative recording of detailed performance characteristics such as the length of the sound, the intensity of the sound, and vibrato information, and can express the collected sound information in a diverse and delicate manner.

[0055] The note conversion unit (126) can calculate the final note length by normalizing the note length calculated by the note length calculation unit (124) based on the pre-set performance tempo information from the user terminal (20) and the note length information based on the performance tempo information to a standard note length corresponding to the performance tempo information. At this time, the note conversion unit (126) can calculate the note length, i.e., the beat, based on the relative time value according to the pre-set BPM. In addition, the note conversion unit (126) can convert into a whole note, a dotted half note, a half note, a dotted quarter note, a quarter note, a dotted eighth note, an eighth note, and a sixteenth note. For example, if the performance tempo information is set to 4 / 4 time, the note conversion unit (126) can calculate the final note length by converting the note length based on a quarter note, which is one beat.

[0056] Additionally, the note conversion unit (126) can generate note data including a fret number, a guitar string number, a note length, and a note intensity. At this time, the note conversion unit (126) can integrate the fret number and guitar string number calculated by the fingering point calculation unit (122), and the note length and intensity information calculated by the note length calculation unit (124). For example, the note conversion unit (126) can generate note data (3, 1, quarter note, 3) including 3 as the fret number, 1 as the guitar string number, a quarter note as the note length, and 3 as the note intensity. At this time, the note conversion unit (126) can generate note data for each of the multiple notes input simultaneously. Additionally, the note conversion unit (126) can store the generated note data along with timestamp information in the storage unit (130).

[0057] In this way, the guitar performance note recording device (100) according to one embodiment of the present invention can generate accurate beat information that matches the performance tempo by integrating the calculated fret number, guitar string number, length of sound, and intensity of sound into note data, and can easily generate tablature based on a standardized note data format based on standardized musical notation.

[0058] The score generation unit (128) can generate a tablature based on the note data converted by the note conversion unit (126). Here, the tablature may be an N-line score created by a notation system tailored for string instruments including guitar or bass, in which horizontal lines are displayed as many times as the number of strings of the guitar, and fret numbers are indicated at the positions of the horizontal lines corresponding to the guitar string numbers being fingered.

[0059] Additionally, the score generation unit (128) can display a 6-line staff score when the number of guitar strings is 6, as shown in FIG. 4. In this case, the score generation unit (128) can display a plurality of horizontal lines arranged starting from the first line located at the top as 6 lines corresponding to the number of guitar strings. Additionally, the score generation unit (128) can display a TAB symbol at the beginning of the score to indicate that it is a tablature score. Furthermore, the score generation unit (128) can display a symbol (t) indicating the beat of the piece being performed.

[0060] In addition, the score generation unit (128) can display note data in the order of the time in which the fingerings were entered. For example, the score generation unit (128) can display the fingering of the 3rd fret of the 1st string of the guitar and the intensity of the sound visualized by the slope as the 1st note (a1). As another example, the score generation unit (128) can display the fingering of the 2nd fret of the 4th string of the guitar and the intensity of the sound visualized by the slope as the 2nd note (a2). At this time, the score generation unit (128) can display that the 1st note (a1) and the 2nd note (a2) were fingered simultaneously in the same column (b1) based on timestamp information, and display the eighth note (c1), which is the length of the beat, at the bottom of the score.

[0061] Additionally, the score generating unit (128) can display the third note (a3), which is the next note in sequence after the first note (a1) and the second note (a2) have been fingered, in the next column (b2). At this time, the score generating unit (128) can display the third note (a3) ​​and the quarter note (c2), which indicate that the fourth fret of the third string of the guitar has been fingered and that the note was played with a relatively gentle slope, with less intensity than the first note (a1) and the second note (a2).

[0062] In addition, the score generation unit (128) can indicate that the 2nd fret of the 3rd string of the guitar is fingered and played with vibrato as the 4th note (a4).

[0063] In this way, the guitar performance note recording device (100) according to one embodiment of the present invention can improve the ease of reading the score by generating a tablature based on converted note data, thereby allowing the performer to intuitively grasp the correct fingering position.

[0064] The storage unit (130) can store fret numbers and other string numbers calculated by the fingering point calculation unit (122), note length and intensity information calculated by the note length calculation unit (124), note data generated by the note conversion unit (126), and sheet music images generated by the sheet music generation unit (128). Additionally, when the storage unit (130) stores fret numbers and other string numbers calculated by the fingering point calculation unit (122), it can store them together with timestamp information, which is time information, to record notes according to the fingering order and to store multiple notes that are fingered simultaneously to identify them as one group.

[0065] In this way, a guitar playing note recording device (100) according to one embodiment of the present invention is mounted on a guitar instrument and collects physical contact fingering signals generated while a player plays the guitar and converts them into notes, thereby reducing the difficulty and amount of conversion calculations and reducing errors that occur when recording multiple notes, thereby improving the speed and accuracy of the recording.

[0066] Referring to FIG. 5, a method for recording guitar notes (S200) according to one embodiment of the present invention may include a fingering point calculation step (S220), a note length calculation step (S230), a note conversion step (S240), and a score generation step (S250).

[0067] First, the guitar playing note recording device (100) applies an output signal to the guitar strings of the instrument and calculates the fret number and the guitar string number based on the ground signal generated at the fret according to the fingering point input by the user (step S220). At this time, the guitar playing note recording device (100) can sequentially scan guitar strings at a preset cycle. For example, the guitar playing note recording device (100) can sequentially transmit electrical signals from the first guitar string to the last guitar string through the output terminal.

[0068] Additionally, the guitar playing note recording device (100) can receive ground signals of guitar strings and frets generated by the user's fingering as input signals. At this time, the guitar playing note recording device (100) can detect ground signals of each fret and guitar string through the input terminal. Accordingly, the guitar playing note recording device (100) can detect ground signals generated for each guitar string.

[0069] Additionally, the guitar playing note recording device (100) can calculate at least one fingering position based on a ground signal. At this time, the guitar playing note recording device (100) can calculate a fret number and a guitar string number based on the detected ground signal. Here, the guitar playing note recording device (100) can calculate a single note generated by fingering in one section as the fret number and guitar string number where the ground signal is generated. Additionally, the guitar playing note recording device (100) can calculate multiple notes generated by fingering at multiple points in one section as the fret (14) number and a guitar string number. Furthermore, the guitar playing note recording device (100) can calculate multiple notes generated by fingering at multiple points in multiple sections as the fret number and a guitar string number.

[0071] Next, the guitar playing note recording device (100) calculates the length of the sound based on the voltage waveform signal of the sound converted from the pickup coil of the instrument guitar (step S230). At this time, the guitar playing note recording device (100) can analyze the voltage waveform signal of the sound that is converted digitally by the pickup coil (P) from the analog signal generated by the vibration of the guitar string. For example, the guitar playing note recording device (100) can collect a voltage waveform signal with a small amplitude from the pickup coil when a small sound is produced by the guitar string vibrating slightly, and collect and analyze a voltage waveform signal with a large amplitude from the pickup coil when a loud sound is produced by the guitar string vibrating strongly.

[0072] Additionally, the guitar performance note recording device (100) can determine the starting point of the sound from the amplitude change value of the voltage. Additionally, the guitar performance note recording device (100) can determine the starting point of the sound as the point where the increase in amplitude in the voltage waveform signal is greater than or equal to a preset first threshold value.

[0073] In addition, the guitar performance note recording device (100) can determine the point where the amplitude becomes less than or equal to a preset second threshold after the start of the sound as the end point of the sound. For example, the guitar performance note recording device (100) can determine the point where the vibration of the guitar string is attenuated and falls below a specific level.

[0074] Additionally, the guitar performance note recording device (100) can calculate the duration of the sound by measuring the duration of the sound by calculating the time difference between the start time of the sound and the end time of the sound. Furthermore, the guitar performance note recording device (100) can calculate the sound intensity by a slope corresponding to the average change in amplitude at each time interval. For example, if the slope value corresponding to the average change in amplitude at each time interval is calculated to be +3, the guitar performance note recording device (100) can store +3 as the sound intensity in the storage unit (130). By doing so, the guitar performance note recording device (100) can quantitatively record the intensity of the played sound by quantifying the average change in amplitude as the sound intensity.

[0075] In addition, the guitar performance note recording device (100) can detect the vibrato of a sound and additionally store vibrato identification information as information of the corresponding sound. At this time, the guitar performance note recording device (100) can identify whether there is vibrato by calculating the amount of pitch change representing the depth information of the vibrato and the speed at which the pitch changes representing the speed information of the vibrato from the voltage waveform signal.

[0076] Next, the guitar performance note recording device (100) converts the fret number, guitar string number, and note length into note data (step S240). At this time, the guitar performance note recording device (100) can calculate the final note length by normalizing the performance tempo information and the calculated note length based on the performance tempo information set from the user terminal (20) and the standard note length corresponding to the performance tempo information. At this time, the guitar performance note recording device (100) can calculate the note length, i.e., the beat, according to the relative time value based on the set BPM. In addition, the guitar performance note recording device (100) can convert into a whole note, a dotted half note, a half note, a dotted quarter note, a quarter note, a dotted eighth note, an eighth note, and a sixteenth note. For example, if the guitar playing note recording device (100) is set to 4 / 4 time signature, it can calculate the final note length by converting the note length based on a quarter note, which is one beat.

[0077] Additionally, the guitar performance note recording device (100) can generate note data including a fret number, a guitar string number, a note length, and a note intensity. At this time, the guitar performance note recording device (100) can integrate the calculated fret number, guitar string number, note length, and intensity information. For example, the guitar performance note recording device (100) can generate note data (3, 1, quarter note, 3) including 3 as the fret number, 1 as the guitar string number, a quarter note as the note length, and 3 as the note intensity. At this time, the guitar performance note recording device (100) can generate note data for each of the multiple notes input simultaneously. Additionally, the guitar performance note recording device (100) can store the generated note data along with timestamp information.

[0078] Next, the guitar performance note recording device (100) generates tablature based on the converted note data (step S250). At this time, the guitar performance note recording device (100) can generate tablature based on the converted note data. Here, the tablature may be an N-line score written by a notation system tailored for string instruments including guitars or basses, in which horizontal lines are displayed as many times as the number of strings of the guitar, and fret numbers are indicated at the positions of the horizontal lines corresponding to the guitar string numbers being fingered.

[0079] Additionally, the guitar performance note recording device (100) can display a 6-line staff score when the number of guitar strings is 6. In this case, the guitar performance note recording device (100) can display a plurality of horizontal lines arranged starting from the 1st line located at the top as 6 lines corresponding to the number of guitar strings. Additionally, the guitar performance note recording device (100) can display a TAB symbol at the beginning of the score indicating that it is a tablature score. Furthermore, the guitar performance note recording device (100) can display a symbol (t) indicating the beat of the song being performed.

[0080] In addition, the guitar performance note recording device (100) can display note data in the order of the time in which fingerings were entered. For example, the guitar performance note recording device (100) can display the number of the fingered guitar string and fret, and the intensity of the sound visualized by the slope as a note. At this time, the guitar performance note recording device (100) can display multiple notes fingered simultaneously in the same column based on timestamp information, and display the length of the beat at the bottom of the score. In addition, the guitar performance note recording device (100) can display vibrato as a note. Accordingly, the guitar performance note recording device (100) generates an accurate tablature based on the recorded note data, thereby allowing the performer to intuitively grasp the correct fingering position, thus improving the ease of reading the score.

[0081] The above-described recording method can be implemented by a guitar playing note recording device (100) as shown in FIG. 2, and in particular, can be implemented by a software program that performs these steps, in which case such programs can be stored on a computer-readable recording medium or transmitted by a computer data signal combined with a carrier wave on a transmission medium or communication network.

[0082] At this time, the computer-readable recording medium includes all types of recording devices in which data readable by a computer system is stored, and may be, for example, ROM, RAM, CD-ROM, DVD-ROM, DVD-RAM, magnetic tape, floppy disk, hard disk, optical data storage device, etc.

[0083] Although an embodiment of the present invention has been described above, the concept of the present invention is not limited to the embodiments presented in this specification. Those skilled in the art who understand the concept of the present invention may easily propose other embodiments within the scope of the same concept by adding, changing, deleting, or adding components, and such are also to be considered to fall within the scope of the concept of the present invention. Explanation of the symbols

[0084] 10: Instruments, Others 20 : User terminal 100 : Guitar playing note recording device 120 : Control unit 122 : Finger position calculation unit 124 : Note Length Calculation Unit 126 : Note conversion section 128 : Score Generation Section 130 : Storage unit

Claims

Claim 1 A guitar playing note recording device comprising: a fingering point calculation unit that applies an output signal to a guitar string and calculates a fret number and a guitar string number based on a ground signal generated at a fret according to a fingering point input by a user; a note length calculation unit that calculates the length of a note according to a voltage waveform signal of a sound converted from a pickup coil of the guitar; and a note conversion unit that converts the fret number, the guitar string number calculated by the fingering point calculation unit, and the note length calculated by the note length calculation unit into note data. Claim 2 A guitar performance note recording device further comprising, in claim 1, a score generating unit that generates a tablature based on the converted note data. Claim 3 A guitar playing note recording device according to claim 1, wherein the finger point calculation unit is equipped with M output terminals that transmit electrical signals connected to guitar strings located on the bridge of the instrument guitar and N input terminals connected to one side of the frets of the guitar neck. Claim 4 A guitar playing note recording device according to claim 1, wherein the fingering point calculation unit sequentially scans the guitar strings at a preset period and detects the ground signal generated for each guitar string to calculate at least one fingering position. Claim 5 A guitar performance note recording device according to claim 1, wherein the sound length calculation unit determines a point where the increase in amplitude from the voltage waveform signal of the sound is greater than or equal to a first threshold value as the start point of the sound, and determines a point where the amplitude after the start of the sound becomes less than or equal to a second threshold value as the end point of the sound, calculates the time difference between the start point of the sound and the end point of the sound to calculate the sound length, and calculates a slope corresponding to the average change amount of the amplitude as the sound intensity. Claim 6 A method for recording guitar playing notes, comprising: a fingering point calculation step that applies an output signal to a guitar string and calculates a fret number and a guitar string number based on a ground signal generated at a fret according to a fingering point input by a user; a note length calculation step that calculates the length of a note according to a voltage waveform signal of a sound converted from a pickup coil of the guitar; and a note conversion step that converts the fret number, the guitar string number, and the length of the note into note data. Claim 7 A method for recording guitar performance notes, further comprising, in claim 6, a score generation step of generating a tablature based on the converted note data. Claim 8 A method for recording guitar notes according to claim 6, wherein the fingering point calculation step sequentially scans the guitar strings at a preset period and detects the ground signal generated for each guitar string to calculate at least one fingering position. Claim 9 A method for recording other musical notes according to claim 6, wherein the step of calculating the note length determines the point where the increase in amplitude from the voltage waveform signal of the note is greater than or equal to a first threshold value as the start point of the note, and determines the point where the amplitude after the start of the note becomes less than or equal to a second threshold value as the end point of the note, calculates the time difference between the start point of the note and the end point of the note to calculate the note length, and calculates the slope corresponding to the average change amount of the amplitude as the sound intensity. Claim 10 A computer-readable recording medium storing a program for implementing a method for recording other musical notes according to any one of paragraphs 6 through 9.

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