JP3867684B2 - Electronic musical instruments - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic musical instrument that can generate a musical sound signal in a mute manner, such as a mute function of a stringed musical instrument.
[0002]
[Prior art]
Conventionally, by arranging a plurality of fret switches on the buttocks and arranging a plurality of string members on the trunk, pressing a desired fret switch and performing a string operation on the desired string member A stringed electronic musical instrument that generates a musical sound signal is well known. In this electronic musical instrument, as shown in the following Patent Documents 1 and 2, the mode of the musical sound signal generated is switched to the mute mode by a mute instruction by touching the mute plate provided on the trunk or by a mute operation of the string member. I can do it.
[0003]
[Patent Document 1]
Japanese Patent No. 3309687
[Patent Document 2]
JP 2002-258839 A
[0004]
[Problems to be solved by the invention]
However, in the above-described conventional electronic musical instrument, the musical tone signal once generated in the mute mode is attenuated in the mute mode as it is, even when the mute instruction is canceled, and the generation is terminated. In this case, even when the performer deliberately cancels the mute operation, the generation time of the musical sound signal is shortened, and it is impossible to enjoy the same performance as a natural instrument such as a guitar.
[0005]
SUMMARY OF THE INVENTION
The present invention has been made in order to cope with the above-described problems. The purpose of the present invention is to increase the generation time of a musical tone signal once generated in the mute mode once the performer cancels the mute operation. It is an object to provide an electronic musical instrument that can enjoy the same performance as a natural instrument such as a guitar.
[0006]
  To achieve the above object, the present invention is characterized by a plurality of strings and a plurality of strings.StringA tone signal generating means for generating a tone signal in response to the operation, and a plurality of strings are generated by the tone signal generating means.StringA first mute instruction means for instructing to switch the generation mode of all the musical sound signals generated in response to the operation to the mute mode;StringA plurality of musical sound signals generated in response to an operation areAccording to each contact operation to the stringA second mute instruction means for giving an instruction to switch to a mute mode for each string;When one of the plurality of strings is subjected to a string operation with the first mute instruction means instructed to switch the musical sound signal generation mode to the mute mode, the response to the string operation of any one of the strings The musical tone signal generating means is controlled so as to generate all musical tone signals generated in a muted manner, and the musical tone signal is generated in response to the string operation of one of the plurality of strings. In the state, when the musical sound signal generation mode is instructed to be switched to the mute mode by the first mute instruction means, the generation mode of all the musical sound signals generated in response to the chord operation of any of the strings is set to the mute mode. Control musical tone signal generation means to switchFirst mute mode switching means;In a state where a musical sound signal is generated in response to a string operation on one of the plurality of strings, the second mute instruction means instructs the generation of the musical sound signal related to any one of the strings to the mute mode. The musical tone signal generating means is controlled so that the musical tone signal generated in response to the string operation of one of the strings is switched to the mute mode.When the switching instruction to the mute mode by the second mute mode switching means and the first mute command means is canceled, among all the tone signals generated by the tone signal generating means, the second mute command means When the instruction for switching to the mute mode by the first mute mode canceling unit and the first mute mode canceling unit are canceled, the generation mode of the musical tone signal relating to the string for which the switching command to the mute mode is cancelled is released from the mute mode. On the condition that the instruction to switch to the mute mode by the first mute instruction means is cancelled, of all the tone signals generated by the tone signal generation means, the mute mode by the second mute instruction means is changed. A second mute mode release means for canceling the generation mode of the musical tone signal related to the string for which the switching instruction is canceled from the mute mode; It lies in the fact was.
[0008]
The tone signal mute mode is different from the normal generation mode in that the peak value of the envelope waveform is small (that is, the volume level is small), the decay time and / or release time is short, and the sound quality is different (specifically Is a mode of generation of a musical sound signal having a difference such as lowering a high sound range level by a filter. When a musical tone signal is synthesized using musical tone waveform data that is stored in the waveform memory and represents a musical tone waveform, the musical tone waveform data to be used is different between the mute mode and the normal mode as the generation mode of the musical tone signal. It is good to make it. In an electronic musical instrument that can select a plurality of types of timbres, the difference between the mute mode and the normal mode may be different for each timbre.
[0009]
As the first mute instruction means,For example, a plurality of electronic musical instruments (for example, a stringed instrument type) on the outer surfacestringCommon toMiA mute operation unit (for example, a mute plate) is provided, and is generated when the performer touches the mute operation unit.All musical sound signalsMute modeCut offInstruct to changeYou can adopt things. As the second mute instruction means, for example, to a stringThe detection circuit that detects the touch operation of theTo stringInstruct to switch to mute mode by touchingYou can adopt things.
[0010]
  According to the present invention as described above,First and secondBy providing the mute mode release means, in a state where the tone signal is generated in the mute mode,For the first or second mute instruction meansWhen the instruction to switch to the mute mode is canceled, the tone signal generation mode is, In different manners depending on the first or second mute instruction means for which the switching instruction is canceled,The mute mode is released. Therefore,By a switching instruction to the first or second mute instruction means,Even if a tone signal is generated once in a mute mode,Switching instruction to the first or second mute instruction meansBy canceling, the generation time of the same tone signal can be lengthened and a performance similar to that of a natural instrument such as a guitar can be enjoyed.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a stringed instrument type electronic musical instrument according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1A schematically shows a top view of the electronic musical instrument, and FIG. 1 schematically shows the back of a part of an electronic musical instrument. This electronic musical instrument is configured in a shape similar to a guitar, and includes a collar portion 10 and a trunk portion 20.
[0012]
A plurality of frets 11 extending in the width direction are embedded in the collar portion 10 at a predetermined distance along the axial direction. Between each fret 11, six elongate fret operation elements 12 are respectively embedded with the longitudinal direction set as the axial direction of the flange portion 10. The plurality of fret operators 12 arranged in a row in the axial direction of the collar portion 10 correspond to the six strings of the guitar, respectively, and the semitone increases as they approach the trunk portion 20 by their contact operation. Specify the note name. If none of the plurality of fret operators 12 in each row is operated, the pitch name E corresponding to the opening of the first to sixth strings of the guitar, respectively._Three, B₂, G₂, E₂, A₂, E₂The pitch corresponding to is specified.
[0013]
A fret switch group 13 (see FIG. 2) corresponding to each fret operator 12 is provided in the collar unit 10. The fret switch group 13 is configured by switches that are turned on by contact with the fret operation element 12. The fret switch group 13 is configured so that the fret operation element 12 is assembled so as to be displaceable by a small amount perpendicularly to the upper surface of the heel part 10 and is turned on when each press operation of the fret operation element 12 by the player. You may do it.
[0014]
A plurality of control operators 14 and a display 15 are provided in the vicinity of the body portion 20 of the collar portion 10. The plurality of control operators 14 are used to select an operation mode of the electronic musical instrument, a musical tone element generated by the pitch, tone color and volume of the musical tone generated by the electronic musical instrument, and an effect imparted to the musical tone. The operation of these control operators 14 is detected by a control switch group 16 (see FIG. 2) embedded in the collar unit 10. The display unit 15 displays an operation mode name, a musical tone element name, an effect name, and the like when the operation mode, musical tone element, and effect are selected.
[0015]
A long back plate 17 is attached to the back surface of the collar portion 10 with the axial direction of the collar portion 10 as the longitudinal direction. The back plate 17 is made of a conductive metal foil, and is used for detecting a mute operation by a player in cooperation with a string mute detection circuit 25 described later.
[0016]
In the body portion 20, six string members 21 corresponding to the first to sixth strings of the guitar are opposed to the upper surface of the body portion 20 in the extended upper position of each row of the fret operation elements 12. The portion 10 is arranged to extend in the axial direction. The string member 21 is formed of a hard and conductive wire, and gradually increases in thickness as it goes upward in FIG. Both end portions of the string member 21 are bent in a direction perpendicular to the upper surface of the trunk portion 20 and enter the trunk portion 20. Both end portions of the string members 21 are swingably supported in the body portion 20 and are urged to a reference position by an elastic member provided in the body portion 20. The vertical displacement in FIG. 1A is allowed.
[0017]
These string members 21 instruct the generation of musical sounds, and the performer performs a string operation (corresponding to a displacement operation) in the vertical direction in FIG. Then, by the displacement of each string member 21 by this stringing operation, the first to sixth musical sounds corresponding to the first to sixth strings of the guitar are instructed independently. Further, in the trunk portion 20, six chord sensors 22 for detecting the maximum displacement amount of each one end portion of the chord member 21 are provided in order to detect the chord operation of the chord member 21. These string sensors 22 are constituted by, for example, a piezoelectric element assembled to an elastic member.
[0018]
A mute plate 23 is attached on the surface of the body 20 and below the string member 21 (left side of FIG. 1A). The mute plate 23 is provided for instructing all the string members 21 to mute the musical tone in common by the player's contact, and is composed of a conductive metal plate. The player's contact with the mute plate 23 is detected by a mute plate detection circuit 24 (see FIG. 2) provided in the trunk portion 20 and electrically connected to the mute plate 23.
[0019]
Further, as shown in FIG. 2, six string mute detection circuits 25 respectively corresponding to the six string members 21 are provided in the trunk portion 20 in order to detect the mute operation by the performer for each string member 21. Is provided. The six string mute detection circuits 25 are electrically connected to the six string members 21, respectively, and are connected to the back plate 17 described above. When the performer performs a mute operation for each string member 21, that is, with the left hand in contact with the back plate 17 provided on the buttocks 10, the right hand makes the belly contact with the desired string member 21, the string mute is performed. The detection circuit 25 detects the mute operation by conduction between each string member 21 and the back plate 17 through the performer's body.
[0020]
The fret switch group 13, the control switch group 16, the string sensor 22, the mute plate detection circuit 24, and the string mute detection circuit 25 are connected to the bus 32 via the operator interface circuit 31. In addition to the display unit 15 described above, a computer main body 40, a storage device 50, and a musical tone signal generation circuit 60 are connected to the bus 32.
[0021]
The computer main unit 40 includes a CPU 41, a timer 42, a ROM 43, and a RAM 44, and repeatedly executes the tone control program of FIG. 3 (including the mute processing routine of FIG. 4) every predetermined short time. The storage device 50 is composed of a relatively large capacity memory such as a flash memory or a disk, and stores various programs including the programs and various data including timbre parameters used for the programs. The various programs and some data may be stored in the ROM 43.
[0022]
The musical tone signal generation circuit 60 generates a musical tone signal according to the control data supplied from the computer main unit 40, adds an effect to the generated musical tone signal, and outputs it. The musical tone signal generation circuit 60 is connected to a sound system 61 including an amplifier, a speaker, and the like. Although all these electronic circuits may be built in the electronic musical instrument, some electronic circuits are accommodated in an external control box (not shown) and the electronic musical instrument is connected to the electronic musical instrument via the cable 26. You may make it connect with an electronic circuit.
[0023]
Next, the operation of the electronic musical instrument configured as described above will be described with reference to the flowcharts of FIGS. When the power switch (not shown) is turned on, the computer main unit 40 starts to repeatedly execute the musical tone control program including steps S10 to S32 in FIG. 3 every predetermined short time.
[0024]
When the performer selects a timbre by operating the control operator 14 related to the timbre while viewing the display content of the display 15, the computer main unit 40 performs the timbre parameters corresponding to the selected timbre by the processing of steps S12 and S14. Is stored in the RAM 44. The tone parameter is composed of tone element control data representing pitch change, frequency characteristics, envelope shape, etc. for generating a tone signal corresponding to a selected tone color (electric guitar tone color, classic guitar tone color, etc.). In setting the timbre parameters, a non-muted timbre parameter for generating a musical tone signal in a normal mode (that is, a non-muted mode) and a mute timbre parameter for generating a musical tone signal in a mute mode. Two kinds of timbre parameters are prepared simultaneously.
[0025]
For example, the mute tone parameter has a smaller envelope waveform peak value (that is, a lower volume level), a shorter decay time and / or release time, and a lower tone range level than the non-mute tone parameter. Contains the parameters that generate the signal. The solid line in FIG. 5 shows an example of the envelope waveform formed by the non-muting timbre parameter, and the broken line in FIG. 5 shows an example of the envelope waveform formed by the mute timbre parameter. Further, the difference in tone color parameters between the mute mode and the normal mode may be made different for each tone color.
[0026]
Next, an operation for generating a musical sound in accordance with the operation of the fret operator 12 and the string member 21 by the performer will be described. First, a case of generating a normal musical tone without a mute operation will be described.
[0027]
When the performer operates any one of the plurality of fret operators 12, the computer main body 40 executes a pitch name designation process in step S16. In this pitch name designation process, note data representing the pitch name corresponding to the operated fret operator 12 is stored in the RAM 44 for each string member 21. Further, since the processing in step S16 is always executed regardless of the operation of the fret operator 12, the string member 21 shown in FIG. Name E from bottom to top_Three, B₂, G₂, E₂, A₂, E₂Is set for each chord member 21. These note data correspond to each pitch name when the first to sixth strings of the guitar are opened.
[0028]
When any one of the six string members 21 is subjected to a string operation, the string sensor 22 corresponding to the operated string member 21 detects the string operation. Then, the string sensor 22 outputs a signal representing the intensity of the string operation together with a signal representing the string operation to the computer main body 40. At this time, the computer main body 40 determines “Yes” in step S18 and executes the processes in and after step S20. In the following description, the six string members 21 are defined as a first string member, a second string member,... A sixth string member from the bottom to the top. The string member that has been subjected to the stringing operation is defined as the n-th string member 21 (where “n” is any integer from 1 to 6). When no mute operation is performed by the performer, the mute flag AMT indicating the mute designation for all the string members 21 is kept at “0” by “1”, and the first by “1”. The mute flags MF (1) to MF (6) respectively indicating mute designations of the first string member to the sixth string member 21 are also kept at “0”.
[0029]
Therefore, in this case, the tone signal generation process of step S24 is executed by the determination process of steps S20 and S22. The musical tone signal generation process in step S24 is to generate a musical tone signal related to the operated nth string member 21 in a non-muted manner, and note data representing a specified pitch name related to the nth string member 21, the nth string member. The tone data representing the strength of the 21 chords, the key-on data for instructing the start of the tone signal generation, and the non-muting tone color parameters set by the processing in step S14 are output to the tone signal generating circuit 60.
[0030]
The musical tone signal generation circuit 60 is a musical tone signal having a pitch specified by the supplied note data and a timbre specified by the supplied non-mute tone parameter, A musical tone signal controlled to a volume level proportional to the value is generated. For example, a musical sound signal whose amplitude envelope is controlled by an envelope waveform signal indicated by a solid line in FIG. 5 is generated. Therefore, the musical sound signal generating circuit 60 generates a non-muted musical signal having a pitch designated by the operation or non-operation of the fret operator 12 corresponding to the string member 21 that has been subjected to the string operation. Then, since a tone corresponding to the generated tone signal is generated from the sound system 61, in this case, a normal tone is played according to the contact operation of the fret operator 12 and the string operation of the string member 21. It is done.
[0031]
Next, a case where the performer instructs mute performance using the mute plate 23 or cancels the mute performance instruction will be described. That is, when the performer touches the base of the right thumb with the mute plate 23 and releases the contact, the contact and release of the mute plate 23 are detected by the mute plate detection circuit 24, respectively. Signals representing contact release are supplied to the computer main body 40, respectively. In this case, the computer main body 40 determines “Yes” in step S28 of FIG. 2 when the mute plate 23 changes from the contact release state to the contact state and when the mute plate 23 changes from the contact state to the contact release state. The mute process routine of step S30 is executed.
[0032]
The mute processing routine includes steps S50 to S80 as shown in FIG. When the performer brings the right hand into contact with the mute plate 23, the computer main unit 40 determines that all the musical sound signals that are being generated by the musical sound signal generating circuit 60 in step S56 by the determination process in step S52. Apply mute processing. Specifically, the mute tone parameters set by the processing in step S14 are supplied to the tone signal generation circuit 60 for all tone signals being generated. In response to the supply of the mute tone parameter, the tone signal generation circuit 60 starts to generate all the tone signals currently being generated using the supplied mute tone parameter. The musical tone signal generated in (1) is switched to be generated in a mute manner. For example, a musical tone signal having an amplitude envelope indicated by a solid line in FIG. 5 is switched to a musical tone signal having an amplitude envelope indicated by a broken line in FIG. After the process of step S56, the mute flag AMT common to all the string members 21 is set to “1” in step S58.
[0033]
On the other hand, when the nth chord member 21 is operated as described above with the mute flag AMT set to “1”, “Yes” is determined in step S20. The computer main body 40 executes the tone signal generation process of step S26 instead of the tone signal generation process of step S24. In the musical tone signal generation process of step S26, the mute tone parameter set by the process of step S14 is output to the musical tone signal generation circuit 60 in place of the non-mute tone parameter used in the process of step S24. To do. Since the other points are the same as the processing in step S24, in this case, the tone signal generation circuit 60 starts to generate a mute tone signal from the start of generation.
[0034]
When the performer cancels the contact operation of the mute plate 23, the determination process in steps S52 and S54 determines that all the musical sound signals being generated by the musical sound signal generation circuit 60 in step S60. A mute release process is performed on a musical sound signal whose mute flag MT (k) is “0”. In this case, “k” is an integer of 1 to 6. Specifically, the non-muted timbre parameter set by the process of step S14 is supplied to the musical tone signal generating circuit 60 by designating the corresponding musical tone signal. Since the tone signal generation circuit 60 is currently being generated and starts generating the corresponding tone signal using the supplied non-muting tone parameter, the mute flag MT (k) is “0” and the mute mode is set. The musical sound generated in is returned to the non-muted mode.
[0035]
After the process of step S60, the mute flag AMT common to all the string members 21 is returned to “0” in step S62. Accordingly, in this state, if the nth string member 21 is operated to perform the stringing operation, the tone signal generation circuit 60 performs the above-described processing in step S24 on the condition that the mute flag MT (n) is “0”. The generation of a non-muted tone signal starts from the start of sound generation.
[0036]
Next, a case where the performer instructs mute performance for each string member 21 and a case where the instruction for the mute performance is canceled will be described. That is, when the performer touches the back plate 17 with the left hand, the base of the right hand thumb contacts the desired string member 21, and one of these contact operations is released, both the back plate 17 and the string member 21 are brought into contact. The simultaneous contact with and the release of the simultaneous contact are detected by the string mute detection circuit 25, and signals representing the contact and the contact release are supplied to the computer main body 40, respectively. In this case, the computer main body 40 is configured to change the contact state between the back plate 17 and the string member 21 from the contact release state to the contact state and when changing from the contact state to the contact release state, step S28 of FIG. In step S30, the mute process routine in step S30 described above is executed.
[0037]
When the performer starts contact between the back plate 17 and the desired string member 21, the computer main body 40 executes the processes of steps S68 to S72 by the determination process of step S64. The string member 21 subjected to the contact operation is referred to as the nth string member 21 including a case where there are a plurality of string members 21 subjected to the contact operation. In the processing of these steps S68 to S72, on the condition that the mute flag AMT is “0”, the musical tone signal related to the nth string member 21 being generated by the musical tone signal generating circuit 60 in step S70. A mute process is applied to this. Specifically, the tone signal parameter for mute set by the process of step S14 is supplied to the tone signal generation circuit 60 by specifying the tone signal related to the nth string member 21. If a musical tone signal corresponding to the nth string member 21 is currently being generated, the musical tone signal generating circuit 60 starts to generate the musical tone signal using the supplied mute tone parameter, and is thus generated in a normal manner. The musical tone signal corresponding to the nth chord member 21 is switched so as to be generated in a mute manner.
[0038]
When the mute flag AMT is “1”, the process of step S70 is not executed, and the process proceeds to step S72. This is because if the mute flag AMT is “1”, all the musical tone signals being generated by the musical tone signal generating circuit 60 have already been generated in a mute manner, so that the mute processing in step S70 is not necessary. In step S72, the mute flag MT (n) for each string member 21 is set to “1”.
[0039]
On the other hand, when the nth chord member 21 is operated as described above with the mute flag MT (n) set to “1”, the mute flag AMT is “0”. Also, since it is determined as “Yes” in step S22, the musical tone signal generation process for generating the musical tone signal in the mute manner in step S26 described above is executed. Accordingly, also in this case, with respect to the tone signal of the nth string member 21, the tone signal generation circuit 60 starts to generate a mute tone signal from the start of sound generation. When the mute flag AMT is “0”, the musical tone signal related to the string member 21 in which the mute flag MT (k) (k is an integer from 1 to 6) is “0” is obtained in step S24. Generated in a non-muted manner by processing.
[0040]
Further, when the performer cancels the contact operation of the back plate 17 or the desired string member 21, the process of steps S74 to S78 is executed by the determination process of steps S64 and 66. In the processing of these steps S74 to S78, on the condition that the mute flag AMT is “0”, the musical tone signal related to the nth string member 21 being generated by the musical tone signal generating circuit 60 in step S76. On the other hand, a mute release process is performed. Specifically, the tone signal for non-mute set by the process of step S14 is designated as a tone signal for the nth string member 21 and supplied to the tone signal generating circuit 60. If a musical tone signal corresponding to the nth string member 21 is currently being generated, the musical tone signal generating circuit 60 starts to generate the musical tone signal using the supplied non-muting tone color parameter. The musical tone corresponding to the nth string member 21 that has been made is returned to the normal mode.
[0041]
When the mute flag AMT is “1”, the process of step S76 is not executed, and the process proceeds to step S78. If the mute flag AMT is “1”, even if the contact operation of the back plate 17 or the desired string member 21 is canceled, all the tone signals generated by the tone signal generating circuit 60 are generated in a mute manner. This is because the mute release processing in step S76 is not necessary. In step S78, the mute flag MT (n) for each string member 21 is returned to “0”. Therefore, in this state, if the n-th string member 21 is operated by stringing, the musical tone signal generating circuit 60 is not muted from the start of sound generation by the process of step S24 on the condition that the mute flag AMT is “0”. The musical tone signal of the mode is started to be generated.
[0042]
As can be understood from the above operation description, according to the above embodiment, in the state where the musical sound signal is generated in a mute manner by the process consisting of steps S54, S60, S62, S66, and S74 to S78 in FIG. When the instruction to switch to the mute mode is released, the tone signal generation mode is released from the mute mode. Therefore, even if a musical tone signal is once generated in a mute mode, if the performer cancels the mute operation, the generation time of the musical tone signal can be lengthened and a performance similar to that of a natural instrument such as a guitar can be enjoyed. it can.
[0043]
Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the object of the present invention.
[0044]
For example, in the above embodiment, the method of forming the tone signal waveform in the tone signal generation circuit 60 has not been described in detail, but various methods such as a filtering method, an FM modulation method, a harmonic synthesis method, and a waveform memory method are adopted. it can. When the waveform memory system is adopted, the musical sound waveform data stored in the waveform memory and used to form the musical tone signal waveform may be differentiated between the normal mode and the mute mode.
[0045]
Further, in the above embodiment, the contact operation to the mute plate 23 or the contact operation to the back plate 17 and the string member 21 is detected for an instruction to switch the tone signal to the mute mode. However, various modifications can be made with respect to the switching instruction to the mute mode. For example, with respect to the mute plate 23 and the back plate 17, their fixing positions may be changed to various positions of the flange portion 10 and the trunk portion 20. Further, a mute plate 23 may be provided for each string member 21 so that a mute performance can be instructed for each string member 21 by a touch operation of each mute plate. Further, instead of detecting contact with the mute plate 23 and the back plate 17, the mute plate 23 or the back plate 17 is assembled to the body portion 20 and the flange portion 10 so as to be displaceable, and a mute plate 23 or The displacement of the back plate 17 may be detected as an instruction to switch to the mute mode. Further, the fret operator 12 is assembled to the flange 10 so as to be displaceable left and right, front and rear, or up and down, and the pitch designation operation and the instruction to switch to the mute mode are detected independently by the difference in the operation mode of the fret operator 12 You may be able to do it. Furthermore, a displacement sensor that continuously detects a minute displacement of the string member 21 may be provided in each string member 21 so that switching to the mute mode for each string member 21 can be detected by detecting the minute displacement. .
[0046]
In the above embodiment, six rows of fret operators 12 and six string members 21 are provided to correspond to a six-string guitar, but “12” for a 12-string guitar and “12” for a bass guitar. As in “4”, the number of rows of fret operators and the number of string members may be other than “6”. Moreover, although the shape of the electronic musical instrument is configured to resemble a guitar shape, it may be configured to resemble another stringed musical instrument shape such as a violin, cello, or violada gamba. In this case, the detection signal for the bowing operation of the bow member may be a trigger signal for the key-on signal.
[0047]
In addition, with respect to the pitch designating operator, operators other than the fret operator 12, such as operators arranged simply in a matrix, continuously arranged rods, strings, etc., in which the operation position can be detected. You may employ | adopt the operation element arrange | positioned with an operation element and other forms. Further, regarding the sound generation instruction member, instead of the string member 21, other members such as a string that vibrates by a manual operation of the performer or a string that vibrates by a bow like a violin can be employed. When using such string vibration, it is preferable to pick up the vibration of the string and use it for generation control of a musical sound signal.
[0048]
Furthermore, the present invention is not limited to a stringed electronic musical instrument, but a performance operator that instructs the generation of musical sounds (a case in which a pitch designating operator and a pronunciation commanding operator are different from each other, And an electronic musical instrument having any shape as long as the electronic musical instrument has a switching instruction operator for switching the musical sound signal generation mode to the mute mode.
[Brief description of the drawings]
FIG. 1A is an external view showing a top surface of a stringed musical instrument according to an embodiment of the present invention, and FIG. 1B is an external view showing a part of the back surface of the electronic musical instrument.
2 is a block diagram showing an electric circuit device of the electronic musical instrument of FIG. 1. FIG.
FIG. 3 is a flowchart of a musical tone control program executed by the computer main body of FIG.
FIG. 4 is a flowchart showing details of a mute processing routine of the musical tone control program of FIG. 3;
5 is a waveform diagram showing an envelope waveform of a musical tone signal generated by the musical tone signal generating circuit of FIG. 2. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Butt part, 11 ... Fret, 12 ... Fret operation element, 14 ... Control operation element, 15 ... Display, 17 ... Back plate, 20 ... Body part, 21 ... String member, 22 ... Chord sensor, 23 ... Mute Reference numeral 24: Mute plate detection circuit 25: String mute detection circuit 40: Computer main unit 50: Storage device 60: Music signal generation circuit

Claims (1)

Multiple strings,
And tone signal generating means for generating a musical tone signal respectively in response to 發弦 operation of the plurality of strings,
A first mute instruction means for switching instruction to mute mode the mode for generating all of the musical tone signal respectively in response is generated 發弦 operation of the plurality of strings by the musical tone signal generating means,
The mode for generating a plurality of musical tone signals, each in response is generated 發弦 operation of the plurality of strings by the musical tone signal generating means, mute mode for each string in response to each contact operation to the plurality of strings Second mute instruction means for instructing to switch to
When one of the plurality of strings is subjected to a string operation in a state in which the first mute instruction means is instructed to switch the sound signal generation mode to the mute mode, the string string of any one of the strings is The musical tone signal generating means is controlled so as to generate all musical tone signals generated in response to the operation in a mute manner, and the musical tone is responsive to the string operation of any one of the plurality of strings. When the tone signal generation mode is instructed to be switched to the mute mode by the first mute instruction means in a state where a signal is generated, all the tone signals generated in response to the chord operation of any one of the strings A first mute mode switching means for controlling the musical tone signal generating means to switch the generation mode of mute to the mute mode;
In a state where a musical tone signal is generated in response to an operation of stroking any one of the plurality of strings, the musical tone signal generation mode related to any one of the strings is changed to a mute mode by the second mute instruction unit. Second mute mode switching means for controlling the music signal generation means to switch the generation mode of the musical sound signal generated in response to the string operation of any one of the strings to the mute mode when switching is instructed ;
When the instruction for switching to the mute mode by the first mute instruction means is released, switching to the mute mode by the second mute instruction means among all the tone signals generated by the tone signal generation means. First mute mode release means for canceling the generation mode of the musical tone signal related to the string for which the instruction has been released from the mute mode;
When the instruction to switch to the mute mode by the second mute instruction means is released, the tone signal generating means generates the condition that the instruction to switch to the mute mode by the first mute instruction means is released Second mute mode canceling means for canceling, from the mute mode, the generation mode of the tone signal related to the strings for which the instruction to switch to the mute mode by the second mute commanding unit is canceled among all the musical sound signals that are being performed An electronic musical instrument characterized by that.

Images