JP2015011134A - Electronic stringed musical instrument, musical sound generating method and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic stringed musical instrument that can perform proper sound emission according to string pressing operation.SOLUTION: An electronic stringed musical instrument 1 includes several strings 22 stretched on a fingerboard 21 provided with several frets 23 and string pressing sensors that are provided to the several frets 23, respectively, and detect contact between any of the several strings 22 and any of the several frets 23. A CPU acquires information about music codes and estimates the location of the string-pressed fret 23 by the string pressing operation to any of the several frets 23, based on detection results of the string pressing sensors and information about the acquired music codes. A hexa pickup 12 detects whether or not any of the several strings 22 stretched is played. The CPU instructs generation of the musical sound corresponding to the estimated location of the fret 23 to a sound source in response to the detection of the playing string.

Description

  The present invention relates to an electronic stringed instrument, a musical sound generation method, and a program.

2. Description of the Related Art Conventionally, there is known an electronic stringed instrument that detects a string pressing operation on a fret and generates a musical sound according to a detection result of the string pressing operation when a string stretched on the fret is played.
In such an electronic stringed instrument, in order to determine the frequency of the musical sound to be generated, the vibration of the string being played is picked up by a microphone and the frequency and amplitude are recognized as an electric signal, or a switch or sensor on the fingerboard is used. A method of recognizing the position where the string is pressed is used.
In particular, the method of determining the frequency of sound generation by detecting the electrical contact between the metal fret and the metal string does not impair the appearance as a stringed instrument, and can be realized with a relatively simple electric circuit, and is low in cost.
A technique related to such an electronic stringed instrument is disclosed in Patent Document 1.

JP 2009-139745 A

However, in a conventional electronic stringed instrument, when the frequency of sound generation is determined by detecting the electrical contact between the metal fret and the metal string, when there is contact between the strings via the fret, such as when multiple strings are pressed simultaneously In addition, it is impossible to recognize the exact position of the string on the fingerboard.
If the exact position of the string on the fingerboard cannot be recognized, the pitch of the musical sound to be generated is not determined, and it is difficult to perform appropriate sound generation.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide an electronic stringed instrument that can perform more appropriate pronunciation according to a string pressing operation.

In order to achieve the above object, an electronic stringed musical instrument according to one aspect of the present invention is provided.
A plurality of strings stretched on a fingerboard portion provided with a plurality of frets;
A plurality of sensors provided on each of the plurality of frets, and detecting a contact between any of the plurality of strings and any of the plurality of frets;
Chord information obtaining means for obtaining information on the chord of the song;
Fret estimation means for estimating the position of a fret that is pressed by a string pressing operation on any of the plurality of frets, based on the detection result of the sensor and information on the acquired chord of the song;
String detection means for detecting whether any of the plurality of strings stretched is stringed;
Sound generation instruction means for instructing a sound source to generate a musical sound corresponding to the estimated fret position in response to detection of the string;
Have

  ADVANTAGE OF THE INVENTION According to this invention, the electronic stringed musical instrument which can perform a more suitable pronunciation according to string pressing operation can be provided.

It is a front view which shows the external appearance of the electronic stringed instrument of this invention. It is a block diagram which shows the hardware constitutions of the electronic part which comprises the said electronic stringed instrument. It is a schematic diagram which shows the signal control part of a string-pressing sensor. It is a flowchart which shows the main flow performed in the electronic stringed instrument which concerns on this embodiment. It is a flowchart which shows the string state detection process performed as a subflow in step S3 of a main flow. It is a flowchart which shows the sound production / mute control processing executed as a sub flow in step S4 of the main flow. It is a schematic diagram which shows the amplitude waveform of a string. It is a schematic diagram which shows the concept by which a string pressing position is determined from the several fret which the string contacted. It is a flowchart which shows the pitch extraction process performed as a subflow in step S5 of the main flow.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[Outline of electronic stringed instrument 1]
First, an outline of an electronic stringed musical instrument 1 as an embodiment of the present invention will be described with reference to FIG.

  FIG. 1 is a front view showing an external appearance of the electronic stringed instrument 1. As shown in FIG. 1, the electronic stringed instrument 1 is configured as an electronic guitar, and is roughly divided into a main body 10, a neck 20, and a head 30.

  A bobbin 31 on which one end of a steel string 22 is wound is attached to the head 30, and the neck 20 has a plurality of frets 23 embedded in a fingerboard 21. In the present embodiment, six strings 22 and 22 frets 23 are provided. Each of the six strings 22 is associated with a string number. The thinnest string 22 is the string number “1”, and the string number increases in the order of increasing the thickness of the string 22. Each of the 22 frets 23 is associated with a fret number. The fret 23 closest to the head 30 has the fret number “1”, and the fret number of the arranged fret 23 increases as the distance from the head 30 side increases.

  The main body 10 emits sound from a bridge 16 to which the other end of the string 22 is attached, a normal pickup 11 that detects vibration of the string 22, and a hexapickup 12 that detects vibration of each string 22 independently. A tremolo arm 17 for adding a tremolo effect to the sound, an electronic unit 13 built in the main body 10, a cable 14 for connecting each string 22 and the electronic unit 13, and the type of tone are displayed. A display unit 15 is provided.

FIG. 2 is a block diagram illustrating a hardware configuration of the electronic unit 13. The electronic unit 13 includes a CPU (Central Processing Unit) 41, a ROM (Read Only Memory) 42, a RAM (Random Access Memory) 43, a string sensor 44, a sound source 45, a normal pickup 11, a hexa pickup 12, The switch 48, the display unit 15, and an I / F (interface) 49 are connected via a bus 50.
Further, the electronic unit 13 includes a DSP (Digital Signal Processor) 46 and a D / A (digital analog converter) 47.

  The CPU 41 executes various processes according to a program recorded in the ROM 42 or a program loaded into the RAM 43 from a storage unit (not shown).

  The RAM 43 appropriately stores data necessary for the CPU 41 to execute various processes. For example, the RAM 43 stores a chord definition table in which the relationship between the chord and the pressed position of the fret 23 is associated. By referring to the chord definition table, if the chord used in the music to be played is found, the CPU 41 can specify the position of the fret 23 pressed by the performer.

  The string-pressing sensor 44 detects what number-of-frets of what-numbered strings are pressed. The string-pushing sensor 44 detects whether a string-pushing operation has been performed on the string 22 (see FIG. 1) on any fret 23 (see FIG. 1) based on an output of an electrostatic sensor described later.

The sound source 45 generates, for example, waveform data of a musical tone whose sound is instructed by MIDI (Musical Instrument Digital Interface) data, and an audio signal obtained by D / A conversion of the waveform data via the DSP 46 and D / A 47. Are output to the external sound source 53 to issue instructions for sound generation and mute. The external sound source 53 amplifies an audio signal output from the D / A 47 and outputs it, and a speaker (not shown) that emits a musical sound using the audio signal input from the amplifier circuit. And).
The normal pickup 11 converts the detected vibration of the string 22 (see FIG. 1) into an electrical signal and outputs it to the CPU 41.
The hex pickup 12 converts the detected independent vibration of each string 22 (see FIG. 1) into an electrical signal and outputs it to the CPU 41.

The switch 48 outputs input signals from various switches (not shown) provided on the main body 10 (see FIG. 1) to the CPU 41. For example, information related to chords used in the song, such as the tone of the song and the chord progression, is input via the switch 48. If the music data includes information representing the key, information representing the key included in the music data may be used instead of inputting information related to the chord from the switch 48. In addition, if information about a chord can be acquired by specifying a song name, only the song name may be specified.
The display unit 15 displays the type of timbre to be sounded and the like.

FIG. 3 is a schematic diagram illustrating a signal control unit of the string-pressing sensor 44.
As shown in FIG. 3, in the string sensor 44, 22 selection lines KI0 to KI21 corresponding to the number of frets 23 and 6 signal lines KC0 to KC5 corresponding to the number of strings 22 are arranged in a matrix. It has a configuration.

The selection lines KI0 to KI21 are sequentially switched to an active state every predetermined time (for example, 1 ms). These selection lines KI0 to KI21 are pulled up to a high level (for example, 5v). If there is a string that is in contact with the fret 23 by pressing the selected line KI0 to KI21 in an active state, a high level signal is read from the signal lines KC0 to KC5 corresponding to the string.
That is, the string-pressing sensor 44 switches the selection lines KI0 to KI21 to active one by one every predetermined time, reads the state (high level or low level) of the signal lines KC0 to KC5, and for all the frets 23, Detect which position is pressed.

However, in the string-pressing sensor 44, when a plurality of strings 22 are brought into contact with the fret 23 (for example, when an F-code string is pressed), the selection line KI0 for the fret number being pressed in the plurality of strings 22 is selected. A high level signal is output from ~ KI21. In such a case, only the output signal of the string-pressing sensor 44 cannot estimate which fret 23 has been pressed, so the pitch cannot be determined. In such a case, in the present embodiment, the fret 23 that can be estimated that the player is pushing the string is specified from the string-pressed position estimated from the output signal of the string-pressing sensor 44 and the information related to the chord of the song that is input in advance. To do.
Thereby, even when a performance in which a plurality of strings 22 are pressed simultaneously, such as an F chord, is performed, more appropriate pronunciation can be performed.

[Main flow]
FIG. 4 is a flowchart showing a main flow executed in the electronic stringed instrument 1 according to the present embodiment.
The main flow shown in FIG. 4 is repeatedly executed by the CPU 41 during the operation of the electronic stringed instrument 1.

First, in step S1, CPU41 acquires the information regarding the chord of the music played. At this time, the CPU 41 acquires information on the key or chord progression of the music input via the switch 48, or acquires information representing the key included in the data of the music to be played.
In step S2, the CPU 41 sets 1 to the designated string number N and sets the timer value T for pitch extraction to 0.
In step S3, the CPU 41 executes a string state detection process (described later) for detecting the state of each string.
In step S4, the CPU 41 executes a sound generation / mute control process (described later) for controlling sound generation and mute.

In step S5, the CPU 41 executes a pitch extraction process (described later) for extracting the pitch of the string 22 that has been played.
In step S6, the CPU 41 increments the string number N by 1 and designates the next string 22.
In step S7, the CPU 41 increments a timer value T for pitch extraction.
In step S8, the CPU 41 determines whether or not the string number N is less than 7 (that is, whether or not the sixth string has already been designated).
If the string number N is less than 7, NO is determined in step S8, and the process proceeds to step S3.
On the other hand, if the string number N is 7 or more, YES is determined in step S8, and the process proceeds to step S2.

[String state detection processing]
FIG. 5 is a flowchart showing the string state detection process executed as a sub-flow in step S3 of the main flow.

First, in step S31, the CPU 41 applies a scan pulse to the string 22 with the string number N.
In step S <b> 32, the CPU 41 acquires fret information indicating which fret 23 the string 22 with the string number N is in contact with. At this time, the fret information is acquired from the output signal of the string-pressing sensor 44.
In step S33, the CPU 41 obtains the amplitude of the string 22 with the string number N. At this time, the amplitude of the string 22 is acquired from the output signal of the hexapickup 12.
After step S33, the process returns to the main flow.

[Sound / mute control processing]
FIG. 6 is a flowchart showing the sound production / mute control process executed as a subflow in step S4 of the main flow. FIG. 7 is a schematic diagram showing the amplitude waveform of the string 22. Further, FIG. 8 is a schematic diagram showing a concept of determining a string pressing position from a plurality of frets with which the string is in contact. Hereinafter, description will be made with reference to FIGS. 7 and 8 as appropriate.

First, in step S41, the CPU 41 determines whether or not the positive peak value of the amplitude of the string 22 with the string number N exceeds the threshold value Th.
When the positive peak value of the amplitude of the string 22 with the string number N does not exceed the threshold Th, NO is determined in step S41, and the process proceeds to step S42.
On the other hand, when the positive peak value of the amplitude of the string 22 with the string number N exceeds the threshold Th, YES is determined in step S41, and the process proceeds to step S43.
In step S <b> 42, the CPU 41 outputs information (note-off information) for muting the sound being generated to the sound source 45.

In step S43, the CPU 41 refers to the fret information and recognizes which fret 23 the string 22 with the string number N is in contact with.
For example, when the strings 22 are pressed as shown in FIG. 8A, the strings are short-circuited by the touch of the index finger, and the first fret, the second fret and the third fret for the strings 22 of any string number. Contact with is detected.
In step S44, the CPU 41 refers to the chord definition table and selects the fret 23 that matches the chord used in the song being played. That is, the CPU 41 validates only the contact with the fret 23 that may be pressed as a chord used in the song being played.
For example, as shown in FIG. 8B, when the chord used in the song to be played is an F chord, the first and second strings of the third and fourth strings, the first string, the second string, the fifth chord Since the second fret of the string and the sixth string is not likely to be pressed, even if contact is detected, it is excluded from the object recognized as the pressed position.

  In step S45, the CPU 41 determines a fret number as a string-pressing position in accordance with a preset condition for the string-pressing position. In the present embodiment, the priority order of the string-pressing position is determined in advance from the relationship between the arrangement of the fingers that operate the fingerboard 21 and the structure of the electronic stringed instrument 1. Specifically, the fingers that press the fret 23 are mainly four fingers, the index finger, the middle finger, the ring finger, and the little finger, and the thumb plays a role of pressing the fret 23 from behind the neck 20. Therefore, when contact with a plurality of frets 23 is recognized with respect to one string, the frets 23 on the head 30 side (low pitch side) of the first string and the sixth string at both ends, For the second to fifth strings, the fret 23 on the main body 10 side (the higher pitch side) is determined as the string-pressing position.

For example, as shown in FIG. 8 (b), it is recognized that the first and sixth strings are in contact with the first and third frets, but as shown in FIG. 8 (c). For these strings, the contact with the fret on the head 30 side is given priority, and the first fret is determined as the pressed position. On the other hand, for the second to fifth strings, the contact with the fret on the main body 10 side is given priority, and the third fret is determined as the string pressing position. However, in the pitch extraction process described later, if the extracted pitch is different from the pitch corresponding to the fret 23 determined in step S45, the CPU 41 immediately adds a pitch to the pitch extracted by the pitch extraction process. correct. “◯” in FIG. 8C represents the string-pressed position after being corrected in this way.
In step S46, the CPU 41 designates a pitch (code) and a volume (velocity), and instructs the sound source 45 to generate a sound.
After step S42 and step S46, the process returns to the main flow.

[Pitch extraction processing]
FIG. 9 is a flowchart showing the pitch extraction process executed as a sub-flow in step S5 of the main flow.

First, in step S51, the CPU 41 detects a positive peak value in the amplitude of the string 22 with the string number N.
In step S52, the CPU 41 detects a negative peak value in the amplitude of the string 22 with the string number N.
In step S53, the CPU 41 obtains a timer value T at the zero cross point between the positive peak value and the negative peak value.
In step S54, the CPU 41 calculates the pitch from the difference between the timer value Tb at the previous zero cross point and the current timer value T.
In step S55, the CPU 41 outputs the calculated pitch to the sound source 45.

Heretofore, the configuration and processing of the electronic stringed instrument 1 of the present embodiment have been described.
In the present embodiment, the plurality of strings 22 are stretched on the fingerboard 21 provided with the plurality of frets 23, and the string-pressing sensor 44 is provided on each of the plurality of frets 23, and is connected to any one of the plurality of strings 22. Contact with any of the plurality of frets 23 is detected. The CPU 41 acquires information on the chord of the song, and based on the detection result of the string sensor 44 and the information on the acquired chord of the song, the position of the fret 23 pressed by the string pressing operation on one of the plurality of frets 23 Is estimated. The hex pickup 12 detects whether any of the plurality of strings 22 stretched is struck. In response to the detection of the string, the CPU 41 instructs the sound source 45 to generate a musical sound corresponding to the estimated position of the fret 23.
For this reason, even if the string position by the string operation cannot be accurately recognized, the string position used in the chord of the music to be played can be reflected to estimate the string position and determine the pitch.
Therefore, it is possible to provide an electronic stringed instrument that can perform more appropriate pronunciation according to the string pressing operation.

Further, in the present embodiment, the CPU 41 relates to the chord of the acquired song among the frets in which contact is detected when the touch sensor 44 detects contact with a plurality of frets 23 for one string. The position of the fret 23 is estimated by giving priority to the highest fret 23 or the lowest fret 23 corresponding to the information.
Therefore, the position of the fret 23 that is highly likely to be operated can be estimated as the string-pressing position according to the relationship between the arrangement of the performer's fingers and the structure of the electronic stringed instrument.

In the present embodiment, the CPU 41 detects contact with the strings 22 stretched at both ends when the string sensor 44 detects contact with a plurality of frets 23 for one string. Of the frets 23, the frets that match the information related to the chord of the acquired music, the fret 23 on the lowest side is prioritized, and contact is detected for the strings 22 other than the strings stretched at both ends. Of the frets, the fret 23 matches the information related to the acquired chord of the music, and the position of the fret 23 is estimated by giving priority to the fret 23 on the highest pitch side.
Therefore, it is possible to estimate the string-pressing position by appropriately reflecting the strings operated by the thumb and little finger of the player who operates the fingerboard 21 and the strings operated by the other fingers.

Further, in the present embodiment, the hexapickup 12 detects the vibration pitch of the string where the bullet string is detected, and the CPU 41 detects it after instructing the generation of a musical sound corresponding to the estimated position of the fret 23. The sound source 45 is instructed to generate a musical sound corresponding to the vibration pitch of the string 22.
Therefore, even if the fret estimated as the string pressing position is different from the actual string pressing position, it can be quickly corrected to an appropriate pitch.

  In addition, this invention is not limited to the above-mentioned embodiment, The deformation | transformation in the range which can achieve the objective of this invention, improvement, etc. are included in this invention.

  In the above-described embodiment, when contact with a plurality of frets for one string is detected, contact with the frets on the head 30 side is given priority for the first and sixth strings, and the second to fifth As for the strings, the contact with the fret on the main body 10 side is given priority, but the present invention is not limited to this. In other words, different priority conditions may be set reflecting conditions for estimating the pressed string position more accurately.

  In the above-described embodiment, the electronic guitar is described as an example of the electronic stringed instrument to which the present invention is applied. However, the electronic stringed instrument is not limited to this, and any electronic stringed instrument other than the electronic guitar can be used as long as the string is operated. Can also be configured.

  The series of processes described above can be executed by hardware or can be executed by software.

When a series of processing is executed by software, a program constituting the software is installed on a computer or the like from a network or a recording medium.
The computer may be a computer incorporated in dedicated hardware. The computer may be a computer capable of executing various functions by installing various programs, for example, a general-purpose personal computer.

  The recording medium including such a program is configured by a recording medium provided to the user in a state of being incorporated in advance in the apparatus main body and distributed separately from the apparatus main body in order to provide the user with the program. The recording medium is composed of, for example, a magnetic disk (including a floppy disk), an optical disk, a magneto-optical disk, or the like. The optical disk is composed of, for example, a CD-ROM (Compact Disk-Read Only Memory), a DVD (Digital Versatile Disk), or the like. The magneto-optical disk is configured by an MD (Mini-Disk) or the like. Moreover, the recording medium provided to the user in a state of being preliminarily incorporated in the apparatus main body is constituted by, for example, a hard disk included in the RAM 43 of FIG. 2 in which a program is recorded.

  In the present specification, the step of describing the program recorded on the recording medium is not limited to the processing performed in chronological order according to the order, but is not necessarily performed in chronological order, either in parallel or individually. The process to be executed is also included.

  As mentioned above, although embodiment of this invention was described, embodiment is only an illustration and does not limit the technical scope of this invention. The present invention can take other various embodiments, and various modifications such as omission and replacement can be made without departing from the gist of the present invention. These embodiments and modifications thereof are included in the scope and gist of the invention described in this specification and the like, and are included in the invention described in the claims and the equivalents thereof.

The invention described in the scope of claims at the beginning of the filing of the present application will be appended.
[Appendix 1]
A plurality of strings stretched on a fingerboard portion provided with a plurality of frets;
A plurality of sensors provided on each of the plurality of frets, and detecting a contact between any of the plurality of strings and any of the plurality of frets;
Chord information obtaining means for obtaining information on the chord of the song;
Fret estimation means for estimating the position of a fret that is pressed by a string pressing operation on any of the plurality of frets, based on the detection result of the sensor and information on the acquired chord of the song;
String detection means for detecting whether any of the plurality of strings stretched is stringed;
Sound generation instruction means for instructing a sound source to generate a musical sound corresponding to the estimated fret position in response to detection of the string;
Electronic stringed instrument with
[Appendix 2]
When the sensor detects contact with a plurality of frets for a single string, the fret estimation means matches information about the acquired chord of the song among the frets for which contact has been detected. The electronic stringed instrument according to appendix 1, wherein the electronic musical instrument is for estimating the position of the fret by giving priority to the fret on the highest pitch side or the fret on the lowest pitch side.
[Appendix 3]
The fret estimation means, when the sensor detects contact with a plurality of frets for one string, the string stretched at both ends, the fret of which the contact is detected It is a fret that matches the information related to the chord of the acquired song, giving priority to the fret on the lowest side, and for the strings other than the string stretched at both ends, among the frets in which contact is detected, The electronic stringed instrument according to appendix 1 or 2, wherein the fret matches the information related to the chord of the acquired music, and the position of the fret is estimated giving priority to the fret on the highest pitch side.
[Appendix 4]
The string detection means detects the vibration pitch of the string detected by the string,
The sound generation instructing means instructs the sound source to generate a musical sound corresponding to the detected string vibration pitch after instructing the generation of the musical sound corresponding to the estimated fret position. Electronic stringed instrument according to any one of the above.
[Appendix 5]
A plurality of strings stretched on a fingerboard portion provided with a plurality of frets, and a plurality of strings provided on each of the plurality of frets, for detecting contact between any of the plurality of strings and any of the plurality of frets. A musical sound generating method used for an electronic stringed instrument having a sensor of
Get information about the chord of the song,
Based on the detection result of the sensor and the information on the acquired chord of the song, the position of the fret that is pressed by a string pressing operation on any of the plurality of frets is estimated,
Detecting whether one of the plurality of strings stretched is struck;
A musical sound generation method of instructing a sound source to generate a musical sound corresponding to the estimated fret position in response to detection of the bullet string.
[Appendix 6]
A plurality of strings stretched on a fingerboard portion provided with a plurality of frets, and a plurality of strings provided on each of the plurality of frets, for detecting contact between any of the plurality of strings and any of the plurality of frets. In a computer used as an electronic stringed instrument having a sensor of
A chord information acquisition step for acquiring information on the chord of the song;
A chord estimation step for estimating a position of a fret pressed by a string pressing operation on any of the plurality of frets based on a detection result of the sensor and information on the acquired chord of the song;
A string detection step of detecting whether any of the plurality of strings stretched is stringed;
In response to detection of the string, a sounding instruction step for instructing a sound source to generate a musical sound corresponding to the estimated fret position;
A program that executes

  DESCRIPTION OF SYMBOLS 1 ... Electronic string instrument, 10 ... Main body, 11 ... Normal pickup, 12 ... Hexa pickup, 13 ... Electronic part, 14 ... Cable, 15 ... Display part, 16 ... -Bridge, 17 ... Tremolo arm, 20 ... Neck, 21 ... Fingerboard, 22 ... String, 23 ... Fret, 30 ... Head, 31 ... Bob, 41 ... CPU, 42 ... ROM, 43 ... RAM, 44 ... string sensor, 45 ... sound source, 46 ... DSP, 47 ... D / A, 48 ... switch, 49 ..I / F, 50 ... Bus, 53 ... External sound source, KI0-KI21 ... Select line, KC0-KC5 ... Signal line

Claims (6)

A plurality of strings stretched on a fingerboard portion provided with a plurality of frets;
A plurality of sensors provided on each of the plurality of frets, and detecting a contact between any of the plurality of strings and any of the plurality of frets;
Chord information obtaining means for obtaining information on the chord of the song;
Fret estimation means for estimating the position of a fret that is pressed by a string pressing operation on any of the plurality of frets, based on the detection result of the sensor and information on the acquired chord of the song;
String detection means for detecting whether any of the plurality of strings stretched is stringed;
Sound generation instruction means for instructing a sound source to generate a musical sound corresponding to the estimated fret position in response to detection of the string;
Electronic stringed instrument with   When the sensor detects contact with a plurality of frets for a single string, the fret estimation means matches information about the acquired chord of the song among the frets for which contact has been detected. The electronic stringed instrument according to claim 1, wherein the position of the fret is estimated by giving priority to a fret on the highest pitch side or a fret on the lowest pitch side.   The fret estimation means, when the sensor detects contact with a plurality of frets for one string, the string stretched at both ends, the fret of which the contact is detected It is a fret that matches the information related to the chord of the acquired song, giving priority to the fret on the lowest side, and for the strings other than the string stretched at both ends, among the frets in which contact is detected, The electronic stringed instrument according to claim 1 or 2, wherein a fret that matches information about the acquired chord of the music and that estimates the position of the fret giving priority to the fret on the highest pitch side. The string detection means detects the vibration pitch of the string detected by the string,
4. The sound generation instructing unit instructs a sound source to generate a musical sound corresponding to the detected string vibration pitch after instructing the generation of a musical sound corresponding to the estimated fret position. The electronic stringed instrument according to any one of the above. A plurality of strings stretched on a fingerboard portion provided with a plurality of frets, and a plurality of strings provided on each of the plurality of frets, for detecting contact between any of the plurality of strings and any of the plurality of frets. A musical sound generating method used for an electronic stringed instrument having a sensor of
Get information about the chord of the song,
Based on the detection result of the sensor and the information on the acquired chord of the song, the position of the fret that is pressed by a string pressing operation on any of the plurality of frets is estimated,
Detecting whether one of the plurality of strings stretched is struck;
A musical sound generation method of instructing a sound source to generate a musical sound corresponding to the estimated fret position in response to detection of the bullet string. A plurality of strings stretched on a fingerboard portion provided with a plurality of frets, and a plurality of strings provided on each of the plurality of frets, for detecting contact between any of the plurality of strings and any of the plurality of frets. In a computer used as an electronic stringed instrument having a sensor of
A chord information acquisition step for acquiring information on the chord of the song;
A chord estimation step for estimating a position of a fret pressed by a string pressing operation on any of the plurality of frets based on a detection result of the sensor and information on the acquired chord of the song;
A string detection step of detecting whether any of the plurality of strings stretched is stringed;
In response to detection of the string, a sounding instruction step for instructing a sound source to generate a musical sound corresponding to the estimated fret position;
A program that executes

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