JPH0535265A - Musical sound controller - Google Patents

Abstract

PURPOSE:To enable smooth performance over a wide sound range even with a limited number of fingers by generating a sound by moving the fingers of the right hand like keying operation on a keyboard musical instrument. CONSTITUTION:A bending switch 12 detects the bending of the 2nd joint of the thumb to detect operation corresponding to finger turning in the performance of the keyboard musical instrument. When the finger turning is detected, key codes assigned to the respective fingers are shifted up in scale unless the last sound generating finger is the thumb. When the last sound generating finger is the thumb, the key codes assigned to the respective fingers are shifted down in scale.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a musical tone control device for controlling the generation of musical tones according to the movement of a finger, and more particularly to a musical tone control device suitable for generating musical tones in response to a musical performance of a keyboard instrument. Regarding

[0002]

2. Description of the Related Art Conventionally, there is a device in which a bending angle of a finger joint is detected and a key-on signal is generated to generate a musical tone having a pitch corresponding to a bent finger. Many of these types of devices are designed to generate musical tones in response to a performance operation on a keyboard instrument such as a piano. For example, five pitches are set on five fingers of the right hand in order of increasing pitch from the thumb side. Are assigned.

Further, in order to be able to sound at pitches other than the above-mentioned five pitches, for example, a # switch, a ♭ switch, an octave changeover switch, etc. are constituted by a foot switch and a switch for detecting the bending state of the left finger, With this switch, five pitches assigned to five fingers can be switched to another pitch.

[0004]

However, in such a conventional device, although the actual playing operation is performed only with the right hand, the switch of the left hand or the like is adjusted in time with this playing operation. Since the operation has to be performed, there is a problem that the operation becomes complicated.

Further, when a keyboard instrument such as a piano is played, it can be smoothly played over a wide range by only the five fingers of the right hand by turning back with the thumb and the other fingers. However, in the conventional device, the pitch corresponding to each finger of the right hand is determined according to the condition of the pitch change by the switch, so that the right hand motion that is originally playing is a sound. It was difficult to play smoothly because it was tied up by switching the height.

SUMMARY OF THE INVENTION An object of the present invention is to provide a musical tone control device for controlling the generation of musical tones according to the movement of a finger so that the musical instrument can be played smoothly over a wide range corresponding to the musical performance of a keyboard musical instrument. ..

[0007]

SUMMARY OF THE INVENTION The musical tone control apparatus of the present invention, which has been made to solve the above-mentioned problems, corresponds to the operation of the thumb and other fingers of the finger in a direction substantially perpendicular to the palm of the hand. A plurality of first detecting means for detecting each is provided, and a series of scale information in the scale is made to correspond to the thumb to the other fingers respectively, and scale information corresponding to the finger detected by the first detecting means is output. A musical sound control device for controlling musical sound, comprising: second detecting means for detecting a bending motion of the thumb in a direction substantially parallel to the palm; and bending detection of the thumb by the second detecting means. Just before the first
Scale information shift means for shifting the scale information of each finger according to the type of the finger whose motion is detected by the detection means.

[0008]

In the keyboard instrument, for example, when playing the scale shown in FIG. 9 (A) and when shifting from "Mi" to "Fa", FIG.
As shown in (A), press the "Mi" keyboard A with your middle finger, and then let your thumb go under the middle finger as shown in Fig. 7 (B), and press "Fa" keyboard B with this thumb. A key return is performed. Also, when playing the scale shown in Fig. 9 (B), when moving from "Fa" to "Mi", use the thumb to "Fa" as shown in Fig. 8 (A).
8B, the middle finger is straddled over the thumb, and the middle finger is used to press the "A" keyboard A.

When such a finger return is performed, the second joint of the thumb is bent so that the thumb and the other finger can easily cross in the lateral direction of the keyboard with one finger pressing as a fulcrum. Therefore, it is possible to perform smoothly in a range wider than five keys.

Here, in the tone control device of the present invention,
The detection of the movement of each finger by the first detection means corresponds to the detection of the key depression in the keyboard musical instrument, and the scale information corresponding to the detected finger is output for sounding a musical tone.

On the other hand, the detection of the bending motion of the thumb by the second detecting means corresponds to the detection of the presence or absence of the finger return, and the scale information shifting means shifts the scale information assigned to each finger by the bending detection by the second detecting means. To do.

For example, when this tone control device is applied to the right hand, shift is performed according to whether the finger whose motion is detected by the first detecting means is the thumb or another finger before detecting the bending of the thumb. If the detected finger is a finger other than the thumb, it is determined that the bending of the thumb is a finger return upward in the scale, and the scale information of each finger is shifted upward. When the detected finger is the thumb, it is determined that the finger is returned to the lower part of the scale, and the scale information of each finger is shifted downward.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram of an electronic musical instrument to which the musical tone control device of the embodiment is applied, and FIG. 2 is a front view of a glove type input device in the musical tone control device. The glove-type input device 1 is attached to the right hand of the player. Therefore, when the player wearing the glove-type input device 1 hits the piano with his right hand, for example, hits the upper surface of the table with his finger, Under the control of the CPU 2, the struck finger is detected and a musical tone with a pitch corresponding to this finger is generated.

As shown in FIG. 2, a pressure-sensitive switch 11 for detecting the pressure applied to each fingertip of the glove-type input device 1 is provided on the ventral side of each fingertip. As the pressure-sensitive switch 11, it is possible to use one that detects pressing by a change in resistance value of the pressure-sensitive resistor, or one that detects pressing by turning on / off a contact switch made of a conductive film and an electrode.

A bending switch 12 for detecting bending of the second joint of the thumb is arranged at a position corresponding to the second joint of the thumb of the glove type input device 1. FIG. 3 is a view showing an example of the bending switch 12. This bending switch 12 has two rod-shaped pieces 121, rotatably connected at a fulcrum O in a state where the end washers 121a, 122a are overlapped. 122, each of the washers 121a, 122a
Convex pieces 121b and 122b are formed on each of them.

Contact points 121c and 122c are formed on the facing surfaces of the convex pieces 121b and 122b, respectively.
When the rod-shaped pieces 121 and 122 are bent at the fulcrum O as shown by arrows in the figure, the contact points 121c and 122c come into contact with each other. This constitutes a contact switch, and leads 121d connected to the contacts 121c, 122c,
ON / OFF of the contact switch is detected via 122d. That is, as shown by the chain double-dashed line in FIG. 2, when the thumb is bent at the second joint, the bending switch 12 is turned on.

In FIG. 1, a key-on detection circuit 3 is a circuit for detecting whether or not each finger presses the pressure-sensitive switch 11, and when the pressure-sensitive switch 11 is pressed, a key-on signal is output and Information indicating the type of finger corresponding to the pressed pressure sensitive switch 11 is output. Also, when the pressure sensitive switch 11 changes from the pressed state to the non-pressed state, a key-off signal is output.

The bending detection circuit 4 is a circuit for monitoring the state of the bending switch 12, and when it detects that the bending switch 12 is turned on, it sets the bending event signal to "H" level. The bending event signal is reset to "L" level by the reset signal from the CPU 2.

The ROM 5 stores a control program, key code table data, etc., which will be described later,
The CPU 2 controls the operation of the entire electronic musical instrument based on the control program of the ROM 5 while using the registers and array variables set in the RAM 6. Then, a key code of a musical tone to be generated, a note-on signal indicating the start of sound generation and a note-off signal indicating the stop of sound generation are output to the tone generator circuit 7.

The tone generator circuit 7 generates a digital tone signal corresponding to the key code by the note-on signal, and outputs it to the sound system 8 for sounding. The note-off signal also stops sounding.

In this embodiment, a musical tone of a C major scale is generated, and when the thumb-turn and other fingers are crossed as described with reference to FIGS. 7 and 8,
The scale assigned to each finger is shifted depending on whether the thumb is returned by the thumb and any other finger, and whether the finger is returned upward or downward in the scale.

The key code used in this embodiment complies with the MIDI standard, and is C ₃ , D ₃ , E ₃ ,
_{F 3, G 3, A 3} , "6 decimal to each sound of B ₃
0 "," 62 "," 64 "," 65 "," 67 "," 6 "
Key codes of 9 "and" 71 "are assigned, and other notes are assigned 12 notes each octave above or below these notes.
The value obtained by adding or subtracting is assigned as the key code.

Next, the control operation of the CPU 2 will be described. Here, the main registers used in the control of the embodiment are as follows, and in the following description and flowchart, each register is represented by the following label, and each register name and their contents are not specifically mentioned. The same label is used unless otherwise specified.

1st: allocation register for holding the key code of the thumb 2nd: allocation register for holding the key code of the index finger 3rd: allocation register for holding the key code of the middle finger 4th: allocation register for holding the key code of the ring finger 5th: little finger Allocation register that holds the key code of KCD: Register that holds the key code of the pressed finger SHIFT: Register that indicates the state of shift occurrence Note that the value of register SHIFT is above the scale as in the case of FIG. It is "1" when the return is performed, and "-1" when the return is performed below the scale as in the case of FIG. 8, and is usually "0".

FIG. 4 is a flowchart of the main routine of the control program, and FIG. 5 is a flowchart of the subroutine. When the power of the electronic musical instrument is turned on, the CPU 2 starts the processing of the main routine, and in step S1,
Assignment registers 1st, 2nd, 3 for each finger from thumb to little finger
rd, 4th, 5th, as the initial value of the key code,
_{C 3, D 3, E 3} , F 3, G 3 key code "60",
"62", "64", "65", and "67" are set, respectively, and other initial settings are made.

Next, in step S2, the presence or absence of a key-on is determined by the key-on signal / key-off signal from the key-on detection circuit 3, and if there is a key-on, a key-on process is performed based on the subroutine of FIG. 5 in step S3. If there is no key-on in the determination of step S2, the presence or absence of key-off is determined by the key-on signal / key-off signal from the key-on detection circuit 3 in step S4. If there is a key-off, a note-off signal is output to the tone generator circuit 7 in step S5. Mute processing. If there is no key-off in the determination in step S4, the process proceeds to step S6.

In step S6, it is determined from the state of the bending event signal from the bending detection circuit 4 whether or not the bending of the thumb is detected. If the bending is not detected, the step S6 is performed.
Returning to step 2, when bending is detected, the bending event signal of the bending detection circuit 4 is reset, and the register K is set in step S7.
It is determined whether the value of CD matches the value of the tone generation register 1st.

Here, the value of the register KCD is set when the key-on process of step S3 is performed as will be described later, and is the key code of the musical tone generated immediately before the bending detection. That is, if the decision result in the step S7 is YES, it means that the thumb is pushed just before the bending detection, and if the decision result is NO, it means that the finger other than the thumb is pushed just before the bending detection. ..

Therefore, the determination result of step S7 is YES.
If it is, the register SHIFT is set to "-1" in step S8.
Is set to store the fact that the finger is returned to the lower part of the scale, and in the case of NO, the register SHIFT is set to "1" in step S9 to store that the finger is returned to the upper part of the scale. Then, when the process of step S8 or step S9 ends, the process returns to step S2, and the same process is repeated.

As shown in FIG. 5, in the key-on process,
In step S11, it is determined whether or not the pressed finger is the thumb. If the thumb is the thumb, the process proceeds to step S12, and if it is not the thumb, the process proceeds to step S15.

In step S12, it is determined whether or not SHIFT = 1. If SHIFT = 1, the process proceeds to step S17. If SHIFT = 1, step S13.
Then, it is determined whether the value of the register KCD matches the value of the allocation register 1st. If the determination result of this step S13 is YES, it will progress to step S17, and if NO, the process of step S14 will be performed.

In step S14, a key code one note higher than the value of the register KCD is stored in the thumb allocation register 1st, and the value of the thumb allocation register 1st is updated. Shift key code up. That is, since the key code of the sound produced immediately before is stored in the register KCD, step S1
If it is determined in step 3 that the immediately preceding pronunciation was not the thumb pronunciation, an upward shift is performed.

On the other hand, if it is determined in step S11 that the pressed finger is not the thumb, then SHIFT =-in step S15.
It is determined whether or not 1, and if SHIFT = -1 is not satisfied, the process proceeds to step S17, and if SHIFT = -1, the process of step S16 is performed.

In step S16, a key code one note below the value of the thumb allocation register 1st is stored in the allocation register corresponding to the currently pressed finger, and the value of the pressed finger allocation register is updated. Accordingly, the key code of the allocation register of the other finger is shifted downward.

Upon completion of each of the above processes, step S17
"0" is set in the register SHIFT with, and step S
At 18, the key code of the allocation register corresponding to the pressed finger is set in the register KCD. And step S
In step 19, the KCD key code and the note-on signal are output to the tone generator circuit 7 to perform sound generation processing, and the process returns to the main routine.

By the above processing, the key code of the allocation register of each finger is shifted according to the finger return, and the finger return is performed before and after the finger return regardless of the position of the finger return. The scale becomes continuous with the finger, and a musical tone with a wide range can be smoothly generated according to the movement of the finger, as when playing a keyboard instrument.

For example, as shown in FIG. 6, the initial state I
The key codes from C _{3 to} G ₃ are assigned from the thumb to the little finger with, and if the thumbs are pressed in the order of, and the middle finger is followed by the thumb, the fingers are returned to The assigned key code is shifted as in state II, and the middle finger sound E ₃ before the finger is returned and the thumb sound F ₃ after the finger is returned in a continuous scale. Therefore, even after the finger is returned, it is possible to play the scale with smooth finger movement in the order from the thumb to. The same applies when the finger is turned downward.

In the above embodiment, the key-on operation corresponding to the key pressing operation of the finger is detected by using the pressure sensitive switch. For example, a bending sensor for detecting the bending amount of the finger is a glove type input device. It may be arranged on each finger and the bending sensor may detect the key-on operation. The bending motion of the thumb may also be detected using a bending sensor. Further, in the above embodiment, the example in which the musical sound control device is applied to the right hand is shown, but it may be applied to the left hand.

In the above embodiment, only the C major (and A monotone) scale can be produced, but an auxiliary switch is also used to shift the scale by a semitone or to a specific pitch. You may jump and shift. Further, even if the finger is continuously returned, the key codes are sequentially shifted, and the scale becomes continuous.

[0040]

As described above, according to the present invention, a motion of a finger of a hand in a direction substantially perpendicular to the palm, such as a key pressing motion of a keyboard instrument, is detected and detected corresponding to each finger. In a musical tone control device that outputs musical scale information corresponding to a finger to control a musical tone, a bending motion in a direction substantially parallel to a palm of a thumb corresponding to a finger-turning motion in a keyboard instrument is detected, and this bending detection is performed. Since the scale information of each finger is shifted according to the type of finger detected as a key pressing action immediately before, the scale information of each scale of the thumb and other fingers when the finger is turned back is continuous. Can be set to Therefore, it is possible to perform smoothly over a wide sound range corresponding to the performance operation of the keyboard instrument.

[Brief description of drawings]

FIG. 1 is a block diagram of an electronic musical instrument to which a musical sound control device according to an embodiment of the present invention is applied.

FIG. 2 is a front view of the back of the hand of the glove type input device according to the embodiment.

FIG. 3 is a view showing a bending switch according to an embodiment.

FIG. 4 is a flowchart of a main routine in the embodiment.

FIG. 5 is a flowchart of a key-on process in the embodiment.

FIG. 6 is a diagram conceptually showing an example of a sound allocation state before and after finger returning in the embodiment.

FIG. 7 is a diagram showing an example of returning a finger to the upper part of a scale according to the present invention.

FIG. 8 is a diagram showing an example of returning a scale downward according to the present invention.

FIG. 9 is a diagram showing an example of a musical scale performance that requires finger return.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Glove type input device, 2 ... CPU, 11 ... Pressure sensitive switch, 12 is a bending switch.

Claims (1)

Claim: What is claimed is: 1. A plurality of first detecting means for detecting a motion of a thumb of a hand and a finger of the other finger in a substantially vertical direction with respect to a palm, respectively. Of the scale information corresponding to the fingers detected by the first detecting means and controlling the musical sound by outputting the scale information corresponding to the fingers from the thumb to the other fingers. Second detecting means for detecting a bending motion of the palm in a direction substantially parallel to the palm of the hand, and detection of bending of the thumb by the second detecting means of the finger whose motion is detected by the first detecting means immediately before the bending detection. A musical tone control device comprising: musical scale information shifting means for shifting musical scale information of each finger according to the type.