JP6268674B2 - Musical sound generating device, electronic musical instrument, musical sound generating method and program - Google Patents

Description

  The present invention relates to a musical sound generating apparatus, an electronic musical instrument, a musical sound generating method, and a program that allow even a beginner user unfamiliar with keyboard operation to easily play a chord glissando.

  Conventionally, an electronic musical instrument capable of playing glissando is known. For example, in the case of a keyboard instrument, the glissando playing method is to press the key so that it does not divide one note at a time from the bass key to the treble key or from the treble key to the bass key. As a result, for example, “doremifasolaside” or “dosila sofa mired” is used to continuously generate a single tone.

  Also known as a harp chord glissando technique is to pluck multiple strings at the same time to produce various chords and similar chord-related sounds from the high to low side or from the low to high side. Yes. Musical notes played with such a chord glissando are often used for so-called sound effects that emphasize the reverberation of the sound rather than the melody because the pitches related to the chord are generated one after another.

  As a technique for enabling such a chord glissando, for example, in Patent Document 1, the keyboard is divided into an upper keyboard (upper key range) and a lower keyboard (lower key range), and the root of the chord (root) If the chord type is specified and the pitch of the melody sound is specified by pressing the upper key, the chord component that has the specified melody as the root is specified by the key operation of the lower key. An electronic musical instrument is disclosed that realizes a chord glissando by playing the upper keyboard key, for example, by stroking it from the right to the left in order to determine the chord type and generate a chord.

JP 2000-172253 A

  By the way, in the technique disclosed in Patent Document 1, the keyboard is divided into an upper keyboard and a lower keyboard, and chord information (root note and type) is specified by the key operation of the lower keyboard, while the melody pitch is set by the key operation of the upper keyboard. Therefore, it is difficult for beginner users who are unfamiliar with keyboard operation to specify chord information and melody pitch using both hands. In other words, there is a problem that a beginner user unfamiliar with the keyboard operation cannot easily play the chord glissando.

  The present invention has been made in view of the above-described circumstances, and provides a musical sound generating device, an electronic musical instrument, a musical sound generating method, and a program capable of easily playing a chord glissando even for beginner users who are unfamiliar with keyboard operation. It is aimed.

In order to achieve the above object, the musical sound generating device according to the present invention is configured such that at least three keys are depressed in a state where the first state is set among the first state and the second state which are selectively set. A first chord determining means for determining a chord having at least three pitches specified by the chord specifying operation as a first chord when the chord specifying operation is performed, and the first chord is determined A switching means for switching the setting from the first state to the second state, a scale determination means for determining a scale from the first chord, and a state of the first chord in the state where the second state is set. From a state in which a key corresponding to any one of the constituent sounds is pressed, a plurality of keys are sequentially pressed while shifting the pressed key to a key corresponding to a pitch that is once higher or lower. Grysan If the operation is performed, the glissando so as to correspond to each of the plurality of pitch husband sequentially designated by the operation, a one to chord component notes the specified pitch, component notes of the chord It is characterized by comprising sound generation control means for sequentially deriving and producing a chord which is a pitch on the determined scale .

  In the present invention, even a beginner user unfamiliar with keyboard operation can easily play a chord glissando.

It is an external view which shows the external appearance of the musical sound generator 100 by one Embodiment of this invention. 2 is a block diagram showing an electrical configuration of the musical sound generating device 100. FIG. 3 is a memory map showing a data configuration of a RAM 15. It is a flowchart which shows operation | movement of the main routine which CPU10 performs. It is a flowchart which shows the operation | movement of the key pressing process which CPU10 performs. It is a flowchart which shows the operation | movement of the key pressing process which CPU10 performs. It is a figure for demonstrating the operation | movement which determines the scale (C major scale) which a main chord (I degree chord) has from the diatonic code table DCT. It is a figure for demonstrating operation | movement of the chord glissando when a reference | standard sound is a root sound. It is a figure for demonstrating operation | movement of the chord glissando when a reference | standard sound is a root sound. It is a figure for demonstrating operation | movement of the chord glissando when a reference | standard sound is a 3rd sound. It is a figure for demonstrating operation | movement of the chord glissando when a reference | standard sound is a 3rd sound. It is a figure for demonstrating operation | movement of the chord glissando when a reference | standard sound is a 5th sound. It is a figure for demonstrating operation | movement of the chord glissando when a reference | standard sound is a 5th sound. It is a flowchart which shows the operation | movement of a key release process. It is a flowchart which shows the operation | movement of the key pressing process by 2nd Embodiment. It is a flowchart which shows the operation | movement of the key pressing process by 2nd Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
A. External view FIG. 1 is an external view showing the external appearance of a musical tone generator 100 according to an embodiment of the present invention. The musical sound generating device 100 shown in this figure has a casing that is rectangular when viewed from above, and includes a keyboard section 13 that includes a liquid crystal display panel 13-1 and a touch panel 13-2 along the longitudinal direction of the casing. And a speaker SP, a switch unit 11 and a display unit 12 on the apparatus panel surface.

  On the liquid crystal display panel 13-1 constituting the keyboard unit 13, for example, images of 88 keys (white key 52 keys, black key 36 keys) are displayed on the screen. On this liquid crystal display panel 13-1, a touch panel 13- having a capacitance type multi-touch detection function using transparent electrodes arranged in a two-dimensional matrix in association with the image positions of the keys displayed on the screen. 2 is laid.

  Therefore, in the keyboard unit 13, an operation in which the user touches (contacts) a key image displayed on the screen is a key pressing operation, and touch position information output from the touch panel 13-2 in accordance with the key pressing operation is the key position information. Treated as a number (or note number). As will be described later, the keyboard unit 13 displays an image indicating the key pressing state in response to the touch of the key image, and displays an image indicating the original key releasing state when the touch is further released. Yes.

B. Configuration FIG. 2 is a block diagram showing the configuration of the musical tone control apparatus 100. In this figure, the CPU 10 sets the processing operation of each part of the apparatus according to the switch event output from the switch part 11, or takes note on / note off according to the detection output of the touch panel 13-2 constituting the keyboard part 13. An event is generated and supplied to the sound source unit 16. The characteristic processing operation of the CPU 10 according to the gist of the present invention will be described in detail later.

  The switch unit 11 includes various operation switches such as a power switch, a tone color selection switch, and an end switch provided on the operation panel, and generates a switch event of a type corresponding to the switch operation. A switch event generated by the switch unit 11 is captured by the CPU 10. The display unit 12 is composed of a liquid crystal display panel or the like, and displays a setting state or an operation state of each part of the device on the screen under the control of the CPU 10.

  As described above, the keyboard unit 13 has a liquid crystal display panel 13-1 that displays each key of the keyboard as an image on the screen, and is laid on the liquid crystal display panel 13-1 and is positioned at the image position of each key displayed on the screen. The touch panel 13-2 is composed of a capacitive touch panel 13-2 using a transparent electrode arranged in a two-dimensional matrix in correspondence with the touch panel 13 in response to a press / release key operation that touches or releases the key image. -2 is detected and output.

  The detection output of the touch panel 13-2 is detected as a key change by key scanning executed by the CPU 10. When the CPU 10 detects a key-on event due to the key depression based on the detection output of the touch panel 13-2, the CPU 10 generates a note-on event including the key number of the depressed key and supplies the note-on event to the sound source unit 16, while releasing the key. When the key-off event is detected, a note-off event including the key number of the released key is generated and supplied to the sound source unit 16.

  Further, a structure in which a transparent pressure-sensitive layer having piezoelectricity is interposed is formed between the liquid crystal display panel 13-1 and the touch panel 13-2, and a pressing force corresponding to a key touch is detected together with touch position information. It does not matter as a mode to do. In this case, the detected key touch (pressing force) is included in the note-on event as a velocity representing the volume of the generated musical sound.

  The ROM 14 stores various control programs loaded on the CPU 10, and also image data of each key displayed on the liquid crystal display panel 13-1 of the keyboard unit 13 (an image indicating a key pressing state or an image indicating a key release state). Remember. The various control programs stored in the ROM 14 include a main routine which will be described later, a key pressing process and a key releasing process which are called from the main routine.

  As shown in FIG. 3, the RAM 15 includes a work area WA and a diatonic code table area DCA. In the work area WA, various register / flag data used for processing of the CPU 10 are temporarily stored. The diatonic code table area DCA stores a plurality of types of diatonic code tables indicating diatonic codes such as triads and seventh chords in each key. The example diatonic chord table DCT illustrated in FIG. 3 shows triad diatonic chords in the major scale. The diatonic code table DCT is used to determine a scale (scale) having a main chord (I-degree chord in the table).

  The tone generator 16 includes a plurality of tone generation channels configured by a well-known waveform memory readout method, and generates musical sound waveform data W according to a note-on / note-off event supplied from the CPU 10. The sound system 17 converts the musical sound waveform data W output from the sound source unit 16 into an analog musical sound signal, performs filtering such as removing unnecessary noise from the musical sound signal, and then amplifies the filtered signal to the speaker SP. (See Fig. 1).

C. Operation Next, with reference to FIGS. 4 to 14, operations of the main routine, the key pressing process, and the key releasing process executed by the CPU 10 of the musical tone generating apparatus 100 having the above-described configuration will be described. In the following, the processing operation of the main routine will be described first as an explanation of the overall operation, and then each operation of the key pressing process and the key releasing process called from the main routine will be described.

(1) Operation of Main Routine FIG. 4 is a flowchart showing the operation of the main routine executed by the CPU 10. When the CPU 10 executes the main routine in response to the power-on of the musical tone generator 100, the process proceeds to step SA1 shown in FIG. 4 to execute initialization for initializing each part of the apparatus. In the next step SA 2, a keyboard image is displayed on the liquid crystal display panel 13-1 of the keyboard unit 13 using the image data of each key stored in the ROM 14.

  Next, in step SA3, switch processing for setting the processing operation of each part of the apparatus in accordance with the switch event output from the switch unit 11, such as setting the tone color of the generated musical tone in accordance with the tone color selection switch operation, is executed. Next, in step SA4, it is determined whether or not an end switch provided in the switch unit 11 has been operated (end operation). If the end operation is not performed, the determination result is “NO”, and the flow proceeds to the next Step SA5.

  In step SA5, key scanning is performed on the keyboard unit 13 (touch panel 13-2) to detect a key change. Subsequently, in step SA6, the presence / absence of key depression is determined based on the detection result in step SA5. If any key of the keyboard unit 13 is pressed, the determination result is “YES”, and the flow proceeds to step SA7 to execute a key pressing process.

In the key pressing process, as will be described later, when three or more keys are pressed and an initial chord is established, a scale (scale) having the initial chord as a main chord (I-degree chord) is determined, and the first chord is determined. The number of sounds of the chord is determined as the number of pronunciations by the chord glissando. Then, after the first chord is sounded, if one of the constituent sounds of the first chord is held down, for example, when the key is pressed one by one with the right glissando on the keyboard, the key is pressed. This is a chord glissando in which the chords on the scale with the key tone as the lowest tone are sequentially generated. When the key pressing process in step SA7 ends, the process proceeds to the next step SA8.

  On the other hand, if no key is pressed on the keyboard unit 13, the determination result in step SA6 is “NO”, and the process proceeds to step SA8, where it is determined whether there is a key release based on the detection result in step SA5. If the key being pressed in the keyboard unit 13 is released, the determination result is “YES”, and the process proceeds to Step SA9 to execute a key release process. In the key release process, as will be described later, after a note-off event corresponding to the released key is generated and the sound source unit 16 is instructed to mute, the image of the muted key is switched from the depressed state to the released state. . If all keys are released, the flag GF is reset to zero to indicate completion of the chord glissando, the key release process in step SA9 is terminated, and the process proceeds to the next step SA10.

  On the other hand, if neither key depression nor key release is performed by the keyboard unit 13 and no key change is detected in step SA5, the determination results in steps SA6 and SA8 are both “NO”, and step SA10. Proceed to In step SA10, in response to the key pressing operation performed on the keyboard unit 13, the image of the key that has been pressed is converted into an image in the pressed state, and the image of the key that has been released is converted into an image in the released state. After updating the display, the process returns to step SA3. In step SA10, when no key release operation is performed, the display of the keyboard image is not updated.

  When the process returns to step SA3, steps SA3 to SA10 are repeated until the end switch provided in the switch unit 11 is operated. When the end switch provided in the switch unit 11 is operated, the determination result in step SA4 is “YES”, and this routine is completed.

(2) Operation of Key Press Process FIGS. 5 to 6 are flowcharts showing the operation of the key press process. When this processing is executed via step SA7 (see FIG. 4) of the main routine described above, the CPU 10 proceeds to step SB1 shown in FIG. 5 and determines whether or not the flag GF is “1”. The flag GF is a flag indicating whether or not the chord glissando is being used. When the flag GF is “1”, the chord glissando is being displayed. When the flag GF is “0”, the chord glissando is not being displayed. Therefore, in step SB1, it is determined whether or not the chord glissando is being performed. In the following, description of the operation is divided into a case where the chord glissando is not in progress and a case where the chord glissando is in progress.

a. When not in chord glissando In this case, the determination result of step SB1 is “NO”, and the process proceeds to step SB2. In step SB2, it is determined whether or not there are three or more newly pressed keys, that is, whether or not a chord is played. If it is not a chord performance, the determination result is “NO”, the process proceeds to step SB 3, a note-on event corresponding to the newly pressed key is generated and supplied to the sound source unit 16. As a result, a musical tone having a pitch specified by the newly pressed key is generated. Thereafter, the process proceeds to step SB10, where an instruction is given to switch the sounded key image from the key release state to the key press state, and the present process ends. In accordance with this switching instruction, the keyboard image is displayed and updated in step SA10 (see FIG. 4).

  On the other hand, when the newly pressed key is played with three or more chords, the determination result in step SB2 is “YES”, and the process proceeds to step SB4. In this case, for example, by determining whether or not there are three or more keys pressed during a predetermined short time interval, a shift (error) in human key pressing timing or the like may be absorbed. . In step SB4, the chord configuration is analyzed by a known chord determination process. That is, in the case of a three-tone key press, the lowest tone is the root tone (root), and the other constituent sounds are basic chords of the third and fifth degrees with respect to the root tone, or the root note. It is determined whether the constituent sounds other than (the third and fifth sounds) are the first turn type / second turn form that is the lowest sound. Also, in the case of a four-tone key press, whether the lowest tone is the root tone (root) and whether the other constituent sounds are basic chords of the third, fifth, and seventh degrees with respect to the root tone. Alternatively, it is determined whether the constituent sound other than the root tone (third-degree fifth-degree sound and seventh-degree sound) is the first to third turn form in which the lowest sound is obtained.

  Next, in step SB5, the chord constituent sound determined from the result of the analysis in step SB4 (root sound in the case of 3 chords, 3rd sound, 5th sound / 4th sound, root sound, 3rd sound, 5th sound) RAM 15 work area by determining first chord data consisting of chord structure information representing the basic type / inverted type and chord name consisting of key (root note name) and chord type Temporarily store in WA.

  Subsequently, in step SB6, among the plural types of diatonic code tables DCT (1) to (n) stored in the diatonic code table area DCA of the RAM 15, the same tone as the first chord data determined in step SB5 is used. In the diatonic code table DCT, a scale (scale) having the initial chord data as a main chord (I-degree chord) is read.

  For example, as in the example illustrated in FIG. 7, if the first chord played by the user is “Domiso (C)”, the first chord is stored in the main chord (I-degree chord) from the diatonic chord table DCT. C Major scale (C major scale) is read. Subsequently, in step SB7, the number of constituent sounds of the first chord determined in step SB5 is determined as the number of pronunciations generated by the chord glissando.

  In step SB8, a note-on event that causes the first chord determined in step SB5 to be generated is sent to the sound source unit 16. Thereby, the sound source unit 16 generates the first chord. Next, in step SB9, the flag GF is set to “1” to indicate that the chord glissando is being processed. Thereafter, the process proceeds to step SB10, where an instruction is given to switch the sounded key image from the key release state to the key press state, and the present process ends. In accordance with this switching instruction, the keyboard image display is updated in step SA10 described above.

  In this way, when the user performs a chord performance by pressing three or more keys when not in the chord glissando, the chord composition is analyzed based on the three or more keys pressed, and as a result, the chord is If it is established, the first chord is determined. Then, referring to the diatonic chord table DCT, a scale (scale) having the first chord as a main chord (I-degree chord) is determined, and the number of sounds constituting the first chord is determined as the number of pronunciations to be pronounced by the chord glissando. To do.

b. In the case of the chord glissando On the other hand, if it is in the chord glissando, the determination result in step SB1 is “YES”, and the process proceeds to step SB11 shown in FIG. In step SB11, it is determined whether or not there is one key being pressed. If a plurality of keys are pressed, the determination result is “NO”, the process proceeds to step SB12, and the flag GF is reset to zero to indicate that the chord glissando is not being performed.

  In step SB13, a note-on event corresponding to the depressed key is generated and supplied to the sound source unit 16 to instruct sound generation. Thereafter, the process proceeds to step SB10 shown in FIG. 5 to instruct to switch the sounded key image from the key release state to the key depression state, and this processing is finished. In accordance with this switching instruction, the keyboard image display is updated in step SA10 described above.

  On the other hand, when a glissando is pressed by pressing one key, the determination result in step SB11 is “YES”, and the flow proceeds to step SB14. In step SB14, the key number of the key being pressed is acquired. Next, in step SB15, the acquired key number is determined as the reference sound of glissando.

  In step SB16, the reference tone of the glissando determined in step SB16 (the sound currently being pressed) is the lowest on the scale (scale) read from the diatonic code table DCT in step SB6 (see FIG. 5). A chord as a sound is derived with reference to the diatonic code table DCT.

  Subsequently, in step SB17, a note-on event for generating the derived chord is sent to the sound source unit 16. As a result, the sound source unit 16 generates a chord glissando. Thereafter, the process proceeds to step SB10 shown in FIG. 5 to instruct to switch the sounded key image from the key release state to the key depression state, and this processing is finished. In accordance with this switching instruction, the keyboard image display is updated in step SA10 described above.

  Here, with reference to FIG. 8 to FIG. 13, the specific operation of Steps SB12 to SB18 will be described as an example. In the following, in order to simplify the description, the triad reference sound (lowest sound) is divided into the case of “root sound (root sound)”, “third sound” and “fifth sound”. Proceed with the explanation.

<When the reference sound (minimum sound) is the root sound (root sound)>
For example, as described above, when the first chord played by the user is “Domiso” (C), as shown in FIG. 8, in the C major scale having the first chord as the main chord (I-degree chord). Chords of degree I to degree VII are determined. Then, after the first chord “Domiso” is pronounced, as shown in FIG. 9, the fingers other than the root sound are released, and the finger pressing the root sound is glissandod to the right on the keyboard and raised once. Suppose that the key of “Le” is pressed.

  Then, a chord on the C major scale having the “le” key as the lowest note, that is, a II degree chord “refara” (Dm) is generated. Further, when the finger pressing the “L” key is glissandod to the right on the keyboard and the “M” key one time higher is pressed, as shown in FIG. 8 and FIG. A chord on the C major scale with the key of “Mi” as the lowest note, that is, a chord “Misoshi” (Em) of degree III is produced.

  Thereafter, when the “Fa”, “So”, “La”, “Shi”, and “Do” keys are sequentially pushed up by the right glissando one after another, as shown in FIG. Chord “Farad” (F) on the C major scale with the key played as the lowest note (F), chord “Sosile” (G) on the V degree, chord “Radomi” (Am) on the VI degree, chord on the VII degree "Silefa" (Bm-5) and I-degree chord "Domiso" (C) are pronounced.

  On the other hand, if “Shi”, “La”, “So”, “Fa”, “Mi”, “Le”, “Do” are sequentially pressed by the left glissando, In the reverse order, the chord “Silefa” (Bm−5) of the VII degree and the chord “Domiso” (C) of the I degree are generated. In this way, after playing the first chord, even a beginner user who is unfamiliar with keyboard operation can easily play the chord glissando simply by gliding the right or left direction on the keyboard with the finger pressing the root tone. Is possible.

<When the reference sound (minimum sound) is the third sound>
For example, if the first chord played by the user is “Missodo”, as shown in FIG. 10, a chord of I degree to VII degree in the C major scale having the first chord as a main chord (I degree chord) is obtained. Determined. Then, after the first chord “Missodo” is pronounced, as shown in FIG. 11, the fingers other than the third sound are released, and the finger pressing the third sound is glissandod rightward on the keyboard to 1 Suppose that the key of “Fa” above is pressed.

  Then, a chord on the C major scale having the key of “Fa” as the lowest tone, that is, a II degree chord “Farare” (Dm) is generated. Then, when the finger pressing the “Fa” key is glissando rightward on the keyboard and the “So” key is pressed one more time, the “F” key is pressed as shown in FIGS. 10 and 11. A chord on the C major scale with the key of “So” as the lowest note, that is, a chord “Sosimi” (Em) of degree III is produced.

  Thereafter, when the keys “La”, “Sh”, “Do”, “Le”, and “Mi” are pressed one by one in the right direction glissando, each key press is performed as shown in FIG. Chord “Radofa” (F), C chord “Sileso” (G), chord “VImira” (Am), chord VII "Refasi" (Bm-5) and I-degree chord "Missodo" (C) are pronounced.

  On the other hand, if “Le”, “Do”, “Sh”, “La”, “So”, “Fa”, “Mi” are sequentially pressed down by the left direction glissando from here In the reverse order to the above, the chord “Lefos” (Bm−5) of the VII degree is pronounced to the chord “Missodo” (C) of the I degree. In this way, after playing the first chord, even a beginner user who is unfamiliar with keyboard operation simply plays the chord glissando simply by gliding the third note to the right or left with the finger pressing the third note. It is possible.

<When the reference sound (minimum sound) is the fifth sound>
For example, if the first chord played by the user is “Sodomi”, as shown in FIG. 12, a chord of I degree to VII degree in the C major scale having the first chord as a main chord (I degree chord) is obtained. Determined. Then, after the first chord “Sodomi” is pronounced, as shown in FIG. 13, the fingers other than the fifth sound are released, and the finger pressing the fifth sound is glissandod rightward on the keyboard to 1 Suppose that the key of “La” above is pressed.

  As a result, a chord on the C major scale having the key of “La” as the lowest note, that is, a chord “Rarefa” (Dm) of degree II is produced. Further, when the finger pressing the “L” key is glissando rightward on the keyboard and the “SHI” key is pressed one time higher, as shown in FIG. 12 and FIG. A chord on the C major scale with the key of “shi” as the lowest note, that is, a chord “Shimoso” (Em) of degree III is produced.

  Thereafter, when the “do”, “le”, “mi”, “fa”, and “so” keys are successively pushed up by the right glissando one after another, as shown in FIG. Chord of the fourth degree on the C major scale (F), the chord of the V degree “Resoshi” (G), the chord of the VI degree “Mirad” (Am), the chord of the VII degree “Facile” (Bm−5) and I-degree chord “Sodomi” (C) are pronounced.

  On the other hand, if “Fa”, “Mi”, “Le”, “Do”, “Shi”, “La”, “So” are sequentially pressed down by the left glissando from here In the reverse order, the chord “Fashire” (Bm−5) of the VII degree and the chord “Sodomi” (C) of the I degree are generated. In this way, after playing the first chord, even a beginner user who is unfamiliar with keyboard operation simply plays the chord glissando simply by gliding the third note to the right or left with the finger pressing the third note. It is possible.

  As described above, in the key pressing process, when three or more keys are pressed and an initial chord is established, a scale (tone) having the initial chord as a main chord (I-degree chord) is determined, and the first chord is determined. The number of sounds of the chord is determined as the number of pronunciations by the chord glissando. Then, after the first chord is sounded, if one of the constituent sounds of the first chord is held down, for example, when the key is pressed one by one with the right glissando on the keyboard, the key is pressed. This is a chord glissando in which the chords on the scale with the key tone as the lowest tone are sequentially generated.

(3) Operation of Key Release Process FIG. 14 is a flowchart showing the operation of the key release process. When this process is executed through step SA9 (see FIG. 4) of the main routine described above, the CPU 10 proceeds to step SC1 shown in FIG. 14, and generates a note-off event corresponding to the key that has been released. The sound source unit 16 is instructed to mute. As a result, the tone generator 16 mutes the musical tone having the pitch specified by the note-off event. At this time, when the chord glissando is performed, the chord constituent sounds other than the key being pressed, which are generated by the chord glissando process, are also muted.

  Subsequently, in step SC2, an instruction is given to switch the muted key image from the key-pressed state to the key-released state. In accordance with this switching instruction, the keyboard image display is updated in step SA10 (see FIG. 4). Next, in step SC3, unnecessary information among the information acquired in the key pressing process (see FIGS. 5 to 6) described above is reset. For example, key press information of a released key.

  In step SC4, it is determined whether or not all keys are in the released state. If all keys are in the released state, the determination result is “YES”, the process proceeds to step SC5, the flag GF is reset to zero, the chord glissando is completed, and the present process is terminated. At the same time, various information used in the chord glissando (main chord, scale, glissando pronunciation number, glissando reference tone, etc.) may be reset. On the other hand, if all keys are not in the released state, the determination result in step SC4 is “NO”, and this process ends.

  As described above, in the key release process, after a note-off event corresponding to the key that has been released is generated and the sound source unit 16 is instructed to mute, the image of the muted key is switched from the pressed state to the released state. If all keys are in the key release state, the flag GF is reset to zero to indicate completion of the chord glissando, and this process ends.

  As described above, in the present embodiment, it is determined whether or not an initial chord is established with at least three sounds designated by the pitch designation operation, and when the initial chord is established, the initial chord is converted into a main chord (I Scale (tone) and the number of constituent sounds of the first chord is determined as the number of pronunciations by the chord glissando. Then, after the first chord is sounded, one of the constituent sounds of the first chord is designated, and the notes are designated in order from the pitch of the designated constituent sound to the treble side or the bass side without being divided. When a glissando operation is performed, chords on the scale with the lowest pitch specified in order according to the glissando operation are sequentially derived and pronounced, so even beginner users unfamiliar with keyboard operation can easily You can play chord glissando.

D. Second Embodiment Next, an operation of a key pressing process according to a second embodiment will be described with reference to FIGS. 15 to 16 are flowcharts showing the operation of the key pressing process according to the second embodiment. When this processing is executed via step SA7 (see FIG. 4) of the main routine as in the first embodiment described above, the CPU 10 proceeds to step SD1 shown in FIG. 15, and the flag GF is “1”. Determine whether or not. The flag GF is a flag indicating whether or not the chord glissando is being used. When the flag GF is “1”, the chord glissando is being displayed. When the flag GF is “0”, the chord glissando is not being displayed. Therefore, in step SD1, it is determined whether or not the chord glissando is in progress. In the following, description of the operation is divided into a case where the chord glissando is not in progress and a case where the chord glissando is in progress.

a. When not in chord glissando In this case, the determination result in step SD1 is “NO”, and the process proceeds to step SD2. In step SD2, it is determined whether or not there are three or more newly pressed keys, that is, whether or not a chord is played. If it is not a chord performance, the determination result is “NO”, the process proceeds to step SD 3, and a note-on event corresponding to the newly pressed key is generated and supplied to the sound source unit 16.

As a result, a musical tone having a pitch specified by the newly pressed key is generated. Thereafter, the process proceeds to step SD10 to instruct to switch the sounded key image from the key release state to the key press state, and the present process ends. In accordance with this switching instruction, the keyboard image is displayed and updated in step SA10 (see FIG. 4).

  On the other hand, when the newly pressed key is played with three or more chords, the determination result in step SD2 is “YES”, and the process proceeds to step SD4. In step SD4, the chord structure is analyzed by a known chord determination process. That is, in the case of a three-tone key press, the lowest tone is the root tone (root), and the other constituent sounds are basic chords of the third and fifth degrees with respect to the root tone, or the root note. It is determined whether the constituent sounds other than (the third and fifth sounds) are the first turn type / second turn form that is the lowest sound. Also, in the case of a four-tone key press, whether the lowest tone is the root tone (root) and whether the other constituent sounds are basic chords of the third, fifth, and seventh degrees with respect to the root tone. Alternatively, it is determined whether the constituent sound other than the root tone (third-degree fifth-degree sound and seventh-degree sound) is the first to third turn form in which the lowest sound is obtained.

  Next, in step SD5, the chord constituent sound determined from the result of the analysis in step SD4 (root sound in the case of 3 chords, 3rd sound, 5th sound / 4th sound, root sound, 3rd sound, 5th sound) RAM 15 work area by determining first chord data consisting of chord structure information representing the basic type / inverted type and chord name consisting of key (root note name) and chord type Temporarily store in WA.

  Subsequently, in step SD6, among the plural types of diatonic code tables DCT (1) to (n) stored in the diatonic code table area DCA of the RAM 15, the same key as the first chord data determined in step SD5 is used. In the diatonic code table DCT, a scale (scale) having the initial chord data as a main chord (I-degree chord) is read.

  For example, as in the example illustrated in FIG. 7, if the first chord played by the user is “Domiso (C)”, the first chord is stored in the main chord (I-degree chord) from the diatonic chord table DCT. C Major scale (C major scale) is read. Subsequently, in step SD7, the number of constituent sounds of the first chord determined in step SD5 is determined as the number of pronunciations generated by the chord glissando.

  Then, when the process proceeds to step SD8, a note-on event that causes the first chord determined in step SD5 to be generated is sent to the sound source unit 16. Thereby, the sound source unit 16 generates the first chord. Next, in step SD9, the flag GF is set to “1” to indicate the chord glissando. Thereafter, the process proceeds to step SD10 to instruct to switch the sounded key image from the key release state to the key press state, and the present process ends. In accordance with this switching instruction, the keyboard image is displayed and updated in step SA10 described above.

  In this way, when the user performs a chord performance by pressing three or more keys when not in the chord glissando, the chord composition is analyzed based on the three or more keys pressed, and as a result, the chord is If it is established, the first chord is determined. Then, referring to the diatonic chord table DCT, a scale (scale) having the first chord as a main chord (I-degree chord) is determined, and the number of sounds constituting the first chord is determined as the number of pronunciations to be pronounced by the chord glissando. To do.

b. In the case of the chord glissando On the other hand, if it is in the chord glissando, the determination result in step SD1 is “YES”, and the process proceeds to step SD11 shown in FIG. In step SD11, it is determined whether or not there is one key being pressed. If a plurality of keys are pressed, the determination result is “NO”, the process proceeds to step SD12, and the flag GF is reset to zero to indicate completion of the chord glissando.

  In step SD13, a note-on event corresponding to the depressed key is generated and supplied to the sound source unit 16 to instruct sound generation. Thereafter, the process proceeds to step SD10 shown in FIG. 15 to instruct to switch the sounded key image from the key release state to the key press state, and this processing is ended. In accordance with this switching instruction, the keyboard image is displayed and updated in step SA10 described above.

  On the other hand, when a glissando is made in which one key is pressed, the determination result in step SD11 is “YES”, and the flow advances to step SD14. In step SD14, it is determined whether or not the previously generated chord is the first chord. If the previously generated chord is not the first chord, the determination result is “NO”, and the process proceeds to Step SD17 described later.

  On the other hand, if the previously generated chord is the first chord, the determination result in step SD14 is “YES”, and the flow proceeds to step SD15. In step SD15, the key number of the key being pressed is acquired, and in the subsequent step SD16, the acquired key number is determined as the reference sound of glissando. Then, when proceeding to step SD17, the chord having the lowest tone as the reference tone of the glissando (the sound currently being pressed) on the scale (scale) read from the diatonic code table DCT in step SD6 (see FIG. 15) described above. Is derived with reference to the diatonic code table DCT.

  Subsequently, in step SD18, a note-on event for generating the derived chord is sent to the sound source unit 16. As a result, the sound source unit 16 generates a chord glissando. Thereafter, the process proceeds to step SD10 shown in FIG. 15 to instruct to switch the sounded key image from the key release state to the key press state, and this processing is ended. In accordance with this switching instruction, the keyboard image is displayed and updated in step SA10 (see FIG. 4).

  As described above, in the key pressing process according to the second embodiment, the scale (scale) having the first chord formed by pressing three or more keys as the main chord (I-degree chord) is determined, and the configuration of the first chord is formed. The number of sounds is determined as the number of pronunciations by the chord glissando, and after the first chord is pronounced, one of the constituent chords of the first chord is pressed, for example, once in the right direction on the keyboard. When you press the upper key, the chord on the scale with the lowest key is the chord glissando, which is sequentially generated, so even beginner users who are unfamiliar with keyboard operation can easily You can play chord glissando.

  As mentioned above, although one Embodiment of this invention was described, this invention is not limited to it, It is included in the invention described in the claim of this-application, and its equivalent range.

  For example, the speaker SP may be provided on the side surface or the back surface of the device other than the device panel surface, or may be connected to a separate speaker.

  In addition, the chord used for the glissando from the first chord pressed by the user and the keypress in the subsequent glissando can be realized by various methods. Analyze chords and scales from the first chord and keep the inversion form of the first chord, and then generate the inversion chord that has the lowest single tone in the subsequent glissando. Regardless of the initial chord being played, various methods such as a method of generating a turning chord according to the sound being played in the glissando can be used.

  For example, even if the first chord played by the user is “Domiso”, if only “Mi” is left and other keys are released and then “Mi” is glissandoed, the first chord of each chord It can be made to glissando in one turning form (turning form of each chord corresponding to a miso in the case of a chord of a domino). That is, when “M” → “Fa” →... Transitions, “Missod” → “Farale” →...

  Similarly, even if the initial chord played by the user is “Domiso”, when the glissando is performed after leaving only “So”, the second inversion of each chord (in the case of the Diso chord) It can be made to glissando in the form of each chord corresponding to sodomi).

  Alternatively, if the first chord played by the user is “Domiso”, then only “Mi” is left and another key is released, and then “Mi” is glissandoed, the third “Domiso” It is possible to pronounce the glissando by determining the chord by assuming that the third note is specified for the subsequent single key press because the sound “Mi” was left behind. It is. That is, after the initial chord of “Domiso” is specified, when “Mi” → “Fa” → “So” → ... transitions, “Domiso” → “Referer” → “Missoshi” → ... It is also possible to do so.

  In short, the initial chord and scale are determined by the first chord played by the user, and the chord (and its inverted form) is determined according to a predetermined rule for the subsequently played sound. Should be pronounced. Predetermined rules include: the various methods described above, a method in which the sound being pressed by the glissando is always regarded as the root sound, the sound being pressed by the glissando after the first chord is sounded, the root sound, the third sound , Determining which of the fifth sound corresponds, a method of deriving a chord having it as a constituent sound, determining the turning form by the first chord, and then the key pressed sound is the lowest sound in the turning form It can be realized by various methods such as a method of generating a chord of a diatonic chord.

  Furthermore, based on the initial chords pressed by the user, the pitch relationship of each of those sounds is extracted, and thereafter, the glissando sound pressed by a single tone is regarded as the lowest sound of the initial chords, for example. It is also possible to realize a chord glissando by overlapping and generating sounds based on the pitch relationship from the lowest tone.

  Further, during the glissando (GF = 1), the glissando is made to be performed when “one key is depressed” in step SB11. However, the present invention is not limited to this, and a plurality of sounds are depressed. Alternatively, the glissando may be pronounced based on the last key pressed. Even when there is a timing when two or more keys are pressed at a time, such as when the sound switches, when playing with glissando, the present invention can be realized by such a method. It is.

  In addition, the present invention can be applied to a normal keyboard as a performance operator, a keyboard instrument having a musical tone output unit such as a speaker or an audio output terminal, a keyboard instrument such as an electronic piano, and other types of performance input operators. It can also be realized with an electronic musical instrument or the like.

Hereinafter, each invention described in the scope of claims at the beginning of the present application will be additionally described.
(Appendix)
[Claim 1]
First chord determination means for determining a first chord based on at least three initial pitches designated by a pitch designation operation;
Scale determining means for determining a scale from the initial chord determined by the initial chord determining means;
Based on the plurality of pitches sequentially specified by the glissando operation performed after the scale is determined, the initial chord determined by the initial chord determination means, and the scale determined by the scale determination means, A musical tone generating apparatus comprising: a chord glissando sounding means for sequentially deriving and producing chords on a scale.

[Claim 2]
The chord glissando sound generation means discriminates the type of the inverted form from the chord constituent sound and the lowest tone of the first chord determined by the first chord determination means, and the discrimination using the pitch specified by the glissando operation as the lowest tone 2. The musical tone generating apparatus according to claim 1, wherein the chord is generated by deriving a pitch on the scale constituting the kind of inverted chord.

[Claim 3]
The chord glissando sound generation means determines the type of the inversion of the initial chord having the lowest pitch specified by the glissando operation as the lowest pitch, and sets the pitch specified by the glissando operation as the lowest pitch. 2. The musical tone generating apparatus according to claim 1, wherein the chord is generated by deriving a pitch on the scale constituting the discordant type of the turned chord.

[Claim 4]
The chord glissando sound generation means discriminates which kind of constituent tone of the initial chord is the pitch specified first by the glissando operation, and continues to the glissando following the pitch specified first. In order for the pitch specified by the operation to be a chord that is a component of the discriminated type, the chord is pronounced by deriving the pitch on the scale as another type of component of the chord The musical tone generator according to claim 1, wherein:

[Claim 5]
The scale determining means includes a pronunciation number determining means for determining the number of constituents of a chord to be pronounced by the chord glissando sounding means based on the number of constituent sounds of the first chord determined by the first chord determining means. The musical tone generator according to any one of claims 1 to 4, wherein:

[Claim 6]
The glissando operation performed after the scale is determined is to sequentially specify a plurality of pitches by sequentially specifying one sound,
6. The musical tone generating apparatus according to claim 1, wherein the chord glissando sound generation means derives and generates a chord to be pronounced based on a single tone designated by the glissando operation.

[Claim 7]
A musical sound generator according to any one of claims 1 to 6,
A performance input operator for performing the pitch designating operation;
An electronic musical instrument comprising: a musical sound output unit that generates and outputs a musical sound based on the sound derived by the chord glissando sound generation means.

[Claim 8]
A method performed by a musical sound generator,
The musical sound generator is
The first chord is determined based on at least three initial pitches specified by the pitch specifying operation,
Determine the scale from the determined initial chord,
Based on a plurality of pitches sequentially specified by a glissando operation performed after the scale is determined, the determined initial chord, and the determined scale, a chord on the scale is sequentially derived. Sound generation method to pronounce.

[Claim 9]
In a computer used as a musical sound generator,
Determining an initial chord based on at least three initial pitches designated by a pitch designation operation;
Determining a scale from the determined initial chord;
Based on a plurality of pitches sequentially specified by a glissando operation performed after the scale is determined, the determined initial chord, and the determined scale, a chord on the scale is sequentially derived. Step to pronounce,
A program that executes

10 CPU
DESCRIPTION OF SYMBOLS 11 Switch part 12 Display part 13 Keyboard part 13-1 Liquid crystal display panel 13-2 Touch panel 14 ROM
15 RAM
16 sound source unit 17 sound system 100 musical sound generator SP speaker

Claims (14)

The chord designation is performed when a chord designation operation is performed in which at least three keys are pressed in a state where the first state of the first state and the second state which are selectively set is set. A first chord determination means for determining a chord having at least three pitches designated by the operation as a first chord;
Switching means for switching the setting from the first state to the second state when the first chord is determined;
And scale determining means for determining the scale from the first chord,
In a state where the second state is set, a sound that is one key up or down from the state in which the key corresponding to any one of the constituent sounds of the first chord is pressed When a glissando operation is performed in which a plurality of keys are sequentially pressed while shifting to a key corresponding to a high pitch, the specified pitch is made corresponding to each of a plurality of pitches sequentially designated by the glissando operation . A chord having a pitch as one of its constituent sounds, comprising: sound generation control means for sequentially deriving and producing a chord whose pitch is a pitch on the determined scale. Musical sound generator. Further comprising constituent sound number determination means for determining the number of constituent sounds of the first chord,
The sound generation control means is a chord having one of the specified pitches corresponding to each of a plurality of pitches sequentially specified by the glissando operation, and all the constituent sounds are determined as described above. 2. A chord having a pitch on the scale and having the number of constituent sounds equal to the number of constituent sounds determined by the constituent sound number determination means is sequentially derived and pronounced. Musical sound generator. The musical tone generator according to claim 1 or 2, wherein the scale determination means determines a scale having the first chord as a main chord. Reference sound setting means for setting the position of the component sound to be used as the reference sound among the plurality of component sounds constituting the chord,
The sound generation control means is a chord having the designated pitch as the reference tone in correspondence with each of a plurality of pitches sequentially designated by the glissando operation, and all the constituent sounds are determined 4. A musical tone generator according to claim 1, wherein a chord which is a pitch on the scale is sequentially derived and pronounced. 5. The musical tone generating device according to claim 4, wherein the reference sound setting means sets the lowest sound having the lowest pitch among the plurality of component sounds constituting the chord as the reference sound. The glissando operation is performed by pressing a key corresponding to another component sound while pressing a key corresponding to one component sound among a plurality of component sounds constituting the initial chord. One key is sequentially pressed to the key corresponding to the pitch that is higher or lower once, and a plurality of keys are pressed.
The reference sound setting means determines the position of the constituent sound corresponding to the key that has been pressed only at the start of the glissando operation among the plurality of constituent sounds constituting the initial chord. The musical tone generator according to claim 4, wherein the musical tone generator is set as follows. Further comprising a turn form judging means for judging a turn form of the first chord,
The sound generation control means is a chord having the designated pitch as the reference tone in correspondence with each of a plurality of pitches sequentially designated by the glissando operation, and all the constituent sounds are determined 5. The musical tone generating apparatus according to claim 4, wherein a chord having a pitch on the scale and having the same inversion form as the inversion form determined by the inversion form determining means is sequentially derived and pronounced. The inversion form determination means is a method of determining the type of inversion form from a plurality of constituent sounds and the lowest sound constituting the initial chord , or the initial chord having the lowest pitch as a pitch specified first by the glissando operation. musical tone generating apparatus according to claim 7, characterized in that to determine the type of inverted form by any of the methods for determining the type of the inversion variations. The said switching means switches a setting from the said 2nd state to the said 1st state, when the said glissando operation performed in the state in which the said 2nd state was set is complete | finished. The musical tone generator according to any one of 1 to 8. After the initial chord is determined , the sound generation control means determines which type of constituent sound of the initial chord is the pitch specified first by the glissando operation, and is specified first. In order for the pitch specified by the glissando operation following the pitch to be a chord that is the determined type of component, the pitch on the scale is derived as another type of component of the chord The musical tone generator according to any one of claims 1 to 9 , wherein the chord is generated by doing so. A musical sound generator according to any one of claims 1 to 10 ,
A performance input operator that designates the pitch using a plurality of keys that can be pressed ,
An electronic musical instrument comprising: a musical sound output unit that generates and outputs a musical sound based on the sound derived by the sound generation control means . The performance input operator is composed of a display panel and a touch panel,
The plurality of keys are a plurality of keys displayed as images on the display panel,
The electronic musical instrument according to claim 11, wherein the key pressing operation is an operation of touching an image of a key displayed on the display panel. The musical sound generator
The chord designation is performed when a chord designation operation is performed in which at least three keys are pressed in a state where the first state of the first state and the second state which are selectively set is set. A chord having at least three pitches designated by the operation as a constituent tone is determined as a first chord,
When the first chord is determined, the setting is switched from the first state to the second state;
Determine the scale from the first chord,
In a state where the second state is set, a sound that is one key up or down from the state in which the key corresponding to any one of the constituent sounds of the first chord is pressed When a glissando operation is performed in which a plurality of keys are sequentially pressed while shifting to a key corresponding to a high pitch, the specified pitch is made corresponding to each of a plurality of pitches sequentially designated by the glissando operation. A musical tone generating method , wherein a chord having a pitch as one of the constituent sounds, the chord constituent sound being a pitch on the determined scale, is sequentially derived and pronounced . On the computer,
The chord designation is performed when a chord designation operation is performed in which at least three keys are pressed in a state where the first state of the first state and the second state which are selectively set is set. Initial chord determination processing for determining a chord having at least three pitches designated by the operation as a constituent chord as a first chord;
A switching process for switching the setting from the first state to the second state when the first chord is determined;
A scale determination process for determining a scale from the first chord;
In a state where the second state is set, a sound that is one key up or down from the state in which the key corresponding to any one of the constituent sounds of the first chord is pressed When a glissando operation is performed in which a plurality of keys are sequentially pressed while shifting to a key corresponding to a high pitch, the specified pitch is made corresponding to each of a plurality of pitches sequentially designated by the glissando operation. A chord having a pitch as one of the constituent sounds, and a sound generation control process for sequentially deriving and producing a chord in which the constituent sounds of the chord are pitches on the determined scale;
A program that executes

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