JP2001166773A - Electronic musical instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To conduct a four-hand performance by automatic playing based on playing data and the playing of keyboard operations of a player and to prevent the occurrence of double ringing by making a sound source to generate musical signals in accordance with the playing data and to generate musical sound in accordance with the key depressing operations of the player on an electronic musical instrument in which keys are depressed or moved up in accordance with the playing data while the sound source generates musical sound in accordance with the playing data. SOLUTION: The instrument is provided with a keyboard which has rocking capable plural keys and generates key operation data when a key is rocked to a prescribed position, a signal generating means which generates prescribed signals based on playing data, a key driving means which drives the keys based on the prescribed signals generated by the signal generating means and rocks the keys within the ranges so that the keys do not reach prescribed positions and a sound source which generates musical sound based on the playing data and also generates musical sound based on the key operation data generated by the keyboard.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an electronic musical instrument,
More specifically, the present invention relates to an electronic musical instrument such as an electronic piano, which can perform a hand-playing performance by a keyboard operation of a player as well as an automatic performance according to performance data.

[0002]

2. Description of the Related Art Generally, in the field of electronic musical instruments, an automatic performance device is mounted, and performance data (for example, a key press instruction) / a sound stop instruction (key release instruction) read out by the automatic performance device. In MIDI, performance data indicating a sound generation start instruction (key pressing instruction) corresponds to note-on, and performance data indicating a sound generation stop instruction (key release instruction) corresponds to note-off.) Key press operation /
2. Description of the Related Art An electronic piano that performs a key release operation is known.

As such an electronic piano, the present applicant has proposed an electronic musical instrument disclosed in Japanese Patent Application Laid-Open No. 6-266354.

That is, in the electronic musical instrument disclosed in Japanese Unexamined Patent Publication No. 6-266354, generation of musical tone signals is controlled by directly transmitting performance data from an automatic performance device to a sound source, and the performance data is faithfully reproduced. In addition, the automatic performance can be performed, and the keys are swung according to the performance device from the automatic performance device, so that an excellent auditory and visual effect can be obtained.

By the way, in such an electronic musical instrument,
At the same time as the sound source is directly controlled from the automatic performance device, the key is driven by the signal, and when the key is pressed to a predetermined position, the key is detected and a tone is generated.

That is, the same sound is pronounced twice (hereinafter, referred to as
Called "double sound." This is unnatural.

As a method of avoiding the double sound, when the automatic performance is performed, the above detection may be ignored.

However, it is unnatural that no musical tone is generated when a person presses a key, even during automatic performance.

[0009] As another method, during a period in which the sound source is sounding by the automatic performance, the key press signal corresponding to the pitch may be ignored. However, this method makes the decision complicated.

[0010]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned various problems of the prior art, and an object thereof is to provide a simple configuration.
When the key is driven at the same time as the automatic performance is performed, the sound is prevented from ringing twice, and when it is detected that the key is pressed to a predetermined position,
It is an object of the present invention to provide an electronic musical instrument capable of generating a musical tone.

[0011]

In order to achieve the above object, according to the first aspect of the present invention, a plurality of swingable keys are provided, and the keys are swung to a predetermined position. A keyboard that generates key operation data when it is performed, a signal generation unit that generates a predetermined signal based on performance data, and driving the key based on the predetermined signal generated by the signal generation unit, Key driving means for swinging the key within a range not reaching the predetermined position; a sound source for generating a tone signal based on performance data and generating a tone signal based on key operation data generated on the keyboard It has the following.

According to the first aspect of the present invention, when the player presses a key and swings to a predetermined position, key operation data is generated. The tone signal is generated based on
When driving a key based on performance data, key operation data is not generated because the key driving means drives and swings the key within a range where the key does not reach a predetermined position. Then, the sound source does not generate a tone signal.

Therefore, when the tone generator generates a tone signal in accordance with the performance data, the key is swung in accordance with the performance data. However, the tone signal is not generated by the swing of the key. Only when the player presses a key and swings to a predetermined position, a tone signal is generated by swinging the key, so that automatic performance based on the performance data and performance by the player's keyboard operation can be performed. Can be performed, and a double sound can be prevented.

According to a second aspect of the present invention, there is provided a plurality of swingable keys, and key operation data including a pitch corresponding to the keys is provided in accordance with the swing of the keys. A keyboard to be generated, signal generating means for generating a predetermined signal based on performance data, and key driving for driving the key based on the predetermined signal generated by the signal generating means to swing the key Means for generating a tone signal based on the performance data, a sound source for generating a tone signal based on the key operation data generated on the keyboard, and a pitch of the key operation data generated on the keyboard having a predetermined pitch. A prohibition means for prohibiting generation of a tone signal based on key operation data generated on the keyboard in the sound source when the pitch corresponds to a key in a key range.

According to the second aspect of the present invention, when the pitch of the key operation data generated by swinging the key is a pitch corresponding to a key in a predetermined key range In this case, the generation of the tone signal based on the key operation data in the sound source is prohibited by the prohibition means.

For example, the tone generator detects the highest pitch and the lowest pitch of a tone signal being generated based on performance data in a sound source, and generates a key having a pitch between the detected highest pitch and the lowest pitch. Control may be performed so that a tone corresponding to the operation data is not generated. At this stage, no sound is generated based on key operation data by depressing a key having a pitch between the highest pitch and the lowest pitch, and a key having a pitch other than between the highest pitch and the lowest pitch is not generated. Only sound generation based on key operation data by key depression is performed.

Also, the highest note and the lowest note are stored in advance in the header portion of the data of the music piece of the automatic performance,
The stored key operation data by pressing a key having a pitch between the highest note and the lowest note may be controlled by the prohibiting means so as not to generate a tone corresponding to generation of a tone signal. In this case, the highest pitch and the lowest pitch are pitches stored in advance, and are fixed key ranges that do not change as the performance data progresses. Also in this case, the sound generation based on the key operation data by the key depression of the key of the predetermined pitch is not performed, but the sound generation based on the key operation data by the key depression of the key other than the predetermined key range is performed.

Further, the key range of the keyboard may be split (divided) into two, and control may be performed so that a tone corresponding to key operation data by depressing a key having a pitch in the upper key range is not generated. Key operation data obtained by pressing a key having a pitch in the upper key range is ignored, and a tone signal is generated only by key operation data obtained by pressing a key having a pitch in the lower key range.

Therefore, when the tone generator generates a tone signal in accordance with the performance data, the key is swung in accordance with the performance data to generate key operation data. A tone signal is not generated by key operation data due to key swing, but only by key operation data generated when a player presses and swings a key having a pitch not within a predetermined key range. Since a tone signal is generated, it is possible to perform a duet between an automatic performance based on performance data and a performance by a player's keyboard operation.
Squeak can be prevented.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of an electronic musical instrument according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram showing a first embodiment of an electronic musical instrument according to the present invention. In this electronic musical instrument, a central processing unit (CP) controls the overall operation of the electronic musical instrument.
U) It is configured to control by using 10.

This CPU 10 is connected via a bus 12
A read-only memory (ROM) 14 in which a program for controlling the operation of the CPU 10 is stored;
A random access memory (RAM) 16 in which various registers and flags necessary for the execution of a program by the PU 10 are set, and an automatic performance device for storing performance data and outputting the stored performance data via the bus 12 And a sound source 2 for generating a tone signal based on performance data from the automatic performance device 18 and key operation data to be described later.
0, and inputs the performance data to generate a drive signal corresponding to the performance data, and generates a drive signal corresponding to the performance data.
2, a key drive control unit 24, a plurality of swingable keys 30 operated by a player, and solenoids 32 arranged on each of the keys 30 and the keys 30 arranged on each of the keys 30 A key switch 52 for detecting a key pressing operation / key releasing operation of the key 30 and a keyboard device 26 having a key mechanism for operating the key 30 are connected.

The sound source 20 is composed of an amplifier, a speaker, etc., and emits a sound signal generated by the sound source 20 to the space as a sound that can be heard.
System 22 is connected.

Reference numeral 28 denotes a MIDI interface (MIDI I / F) to which an external MIDI device 100 such as a sequencer is connected, for inputting performance data generated by the external MIDI device 100,
It controls the output of performance data to the external MIDI device 100 and the like.

In the description of this embodiment, in order to simplify the description and facilitate the understanding of the present invention, the automatic performance device 18 stores performance data in advance, and stores the stored performance data. Although output is performed, it is needless to say that the present invention is not limited to this. Performance data stored in the external storage means may be read.

In the following description, the performance data output from the automatic performance device 18 is used as the performance data used in the processing of the electronic musical instrument.
Of course, this is not limited to MID
Performance data input from the I interface 28 may be used.

The electronic musical instrument also includes various control elements (not shown). By operating appropriate control elements, performance data output from the automatic performance device 18 and input data from the MIDI interface 28 are provided. It is assumed that performance data to be played can be arbitrarily selected.

Hereinafter, of the above-mentioned components, those relating to the implementation of the present invention will be appropriately described.

First, the automatic performance device 18 outputs performance data as described above, and the performance data is based on tone generation start instruction data (note on), sound generation stop instruction data (note off), and the like. It becomes.

Next, the key switch 52 of the keyboard device 26
The key switch 52 detects the key depression / release operation of the key 30. More specifically, the key switch 52 determines which pitch of the key 30 has been pressed / released, The timing, speed, and the like of each of a key release operation and a key release operation of the released key 30 are detected, and the detected information is supplied to the CPU 10 via the bus 12 as an electric signal.

As described above, the keyboard device 26 has the key 30, the solenoid 32, the key switch 52, and the key mechanism for operating the key 30 so as to swing. FIG. 3 is a partially cutaway side view of the keyboard device 26 of the electronic musical instrument shown in FIG. 1 in a key release state, and FIG. 3 is a side sectional view of the key switch 52 in the state shown in FIG. FIG. 4 is a partially broken side explanatory view of a key pressed state in a performance by a player of the keyboard device 26 of the electronic musical instrument shown in FIG. 1, and FIG. 5 shows a key in the state shown in FIG. FIG. 6 is a side sectional view of the switch 52, and FIG. 6 is a partially cutaway side view of the key pressed state by the solenoid 32 of the keyboard device 26 of the electronic musical instrument shown in FIG. Is a side sectional view of the key switch in the state shown in FIG. It is shown.

In FIGS. 2, 4 and 6,
Although the configuration related to one key 30 constituting the keyboard device 26 is shown for easy understanding, in the actual keyboard device 26, the configuration related to such one key 30 corresponds to the number of keys (for example, the keyboard device 26). If the number of keys of 26 is 88 keys, it is equivalent to 88 keys).

Further, one key 3 constituting the keyboard device 26
The swingable range of 0, that is, the total stroke length L is about 10
mm (see FIG. 4).

Hereinafter, a detailed description will be given with reference to FIGS. 2 to 7. Reference numeral 30 denotes a key including a white key and a black key in the keyboard device 26, and reference numeral 42 denotes a bottom plate (not shown) of the keyboard device 26 main body. This is a keyboard chassis made of resin, which is fastened by screws or the like on the mounting surface of (1).

A key 30 is rotatably supported at the upper rear end of the keyboard chassis 42.
A hammer 48 is rotatably supported at an intermediate portion in the front-rear direction.

The hammer 48 is made of a metal material having a large mass, such as lead or iron. The first protrusion 48 is formed on the lower surface at the front end side of the hammer 48 in order from the rotating shaft 48a.
e and the second protrusion 48f are formed.

An actuator 30a is formed below the key 30. When the key is pressed, the actuator 30a presses the upper surface 48b on the front end side of the hammer 48, and the hammer 4
8 rotates.

Reference numeral 52 is provided on the contact board 54 supported by the second chassis portion 42b, and is provided corresponding to the key 30 to detect a key pressing operation / key releasing operation of the key 30. (See FIGS. 3, 5, and 7).

The key switch 52 is integrally formed of an elastic material, for example, rubber, and includes a primary switch 52a and a secondary switch 52b arranged in parallel with the primary switch 52a.
And a support portion 52c that supports the primary switch 52a and the secondary switch 52b with a gap from the contact board 54.

The primary switch 52a is
The first protrusion 48e of the hammer 48 is configured to abut, and the secondary switch 52b is
Eighth second projections 48f are in contact with each other.

Further, when the key 30 is released from the key switch 52, the first contact surface 52f, which is the tip of the primary switch 52a, and the contact board 54 have a height h1.
The second contact surface 52g, which is the tip of the secondary switch 52b, and the contact board 54 are separated from each other with a gap having a height h2 larger than the height h1. (See FIG. 3).

In this embodiment, the total stroke length L of the key 30 from the key release state to the complete key depression state is described.
(See FIG. 4) is set to about 10 mm, and the state of the key switch 52 accompanying the key pressing operation of the key 30 is changed to the stroke length of about 4.5 mm due to the swinging accompanying the key pressing operation of the key 30.
The first projection 48e of the hammer 48 contacts the primary switch 52a at the position shown in FIG.
Are brought into contact with the contact board 54 (see FIG. 7),
Further, when the stroke length is about 8 mm due to the swing of the key 30 due to the key pressing operation, the primary switch 5
The first protrusion 48e of the hammer 48 abuts on the second protrusion 2a,
The contact surface 52f contacts the contact board 54, and the second switch 4b of the hammer 48 is connected to the secondary switch 52b.
The dimensions are set so that 8f contacts and the second contact surface 52g contacts the contact board 54 (see FIG. 5).

Therefore, the key switch 52 is connected to the key 3
A state in which the first contact surface 52f of the primary switch 52a and the second contact surface 52g of the secondary switch 52b are not in contact with the contact board 54 in accordance with the key pressing operation / key releasing operation of 0 (see FIG. 3). ), Only the first contact surface 52f of the primary switch 52a contacts the contact board 54, and the second contact surface 5 of the secondary switch 52b.
2g is not in contact with the contact board 54 (see FIG. 7)
And the first contact surface 52f of the primary switch 52a
A state in which the second switch 52b and the second contact surface 52g of the secondary switch 52b are in contact with the contact board 54 (see FIG. 5).
And three states.

In this electronic musical instrument, the secondary switch 52 starts when the first contact surface 52f of the primary switch 52a contacts the contact board 54.
The key pressing speed is measured by detecting the time difference between the time when the second contact surface 52g of FIG.
It is made to reflect the velocity in MIDI.

In this electronic musical instrument, when both the first contact surface 52f of the primary switch 52a of the key switch 52 and the second contact surface 52g of the secondary switch 52b contact the contact board 54 (FIG. 5). Only when the key is pressed / released under the control of the CPU 10, the key operation data is output.

When the key 32 is in the key release state shown in FIG.
The upper end of the key a is disposed so as to abut the lower surface 70 a of the key pressing force transmitting member 70 extending rearward of the key 30.

The actuator 32a of the solenoid 32
Is for driving the key pressing force transmitting member 70 in the vertical direction according to the drive signal output from the key drive control unit 24 in accordance with the performance data. By driving the actuator 32a, the key 30 is driven up and down in a stroke length range of about 5 mm.

Accordingly, when the key 30 is driven by the solenoid 32, the stroke length of the key 30 is about 5 mm, and only the first contact surface 52f of the primary switch 52a of the key switch 52 contacts the contact board 54 ( Key operation data is not output.

At this time, the sound source 20 is output from the automatic performance device 18.
, The automatic performance data is output, the musical tone is generated based on the automatic performance data, and there is no double sound.

On the other hand, when the key 30 is depressed by the player's hand, the stroke length of the key 30 becomes 10 mm of the full stroke, and both the primary switch 52a and the secondary switch 52b of the key switch 52 are turned on. The key operation data is output to the sound source 20 by contacting the contact board 54 (see FIG. 5), and the sound source 20 generates a tone signal based on the key operation data.

In the state where the key is depressed by the solenoid 32, when sound generation stop instruction data (note-off) is sent from the automatic performance device 18, the solenoid of the key 30 corresponding to the sound generation stop instruction data (note-off) is transmitted. The power supply to the power supply 32 is stopped. As a result, the actuator 30a of the key 30 is pushed back by the own weight of the hammer 48, and the key 30 returns to the key release state.

Immediately before the key 30 is released, both the primary switch 52a and the secondary switch 52b of the key switch 52 are separated from the contact board 54, and the keyboard device 26 emits sound to the sound source 20. Stop instruction data (note-off) is transmitted, but data for which sound generation stop instruction has already been issued is ignored.

Then, the automatic performance device 18 controls the key 3
When the key 0 is released from the key pressed state to the key released state, sound generation stop instruction data (note-off) has already been sent and sound generation has stopped, and in this case, sound generation transmitted from the keyboard device 26 to the sound source 20 is performed. The stop instruction data (note off) is ignored.

On the other hand, when the player changes the key 30 from the key pressed state to the key released state, the sound source 20
The tone generation signal being generated is muted by the sound generation stop data (note-off) sent from 6.

As described above, the key 30 played by the player
In the key depressed state, the tone generator 20 generates a tone signal based on each of the performance data and the key operation data. A duet with a performance by pressing 30 keys is realized.

When the key is depressed by the solenoid 32, only the first contact surface 52f of the primary switch 52a of the key switch 52 contacts the contact substrate 54, and the second contact surface 52g of the secondary switch 52b.
Is not in contact with the contact board 54, the key operation data is not output from the CPU 10 to the sound source 20, and therefore, the tone signal is not generated in the sound source 20 based on the key operation data.

Therefore, even if the key 32 is depressed by driving the actuator 32a of the solenoid 32 based on the performance data, the sound source 20 is controlled based on the performance data.
There is no double sounding phenomenon.

Note that from the end of the key press shown in FIG.
When the sound stop instruction data (note-off) of the key 30 in this state is input as the performance data from the state after the key 30 is depressed within the stroke length of 5 mm, the sound stop instruction data (note-off) is input. ), The solenoid 32 of the key 30 drives and moves the actuator 32a in the downward direction (the direction of the arrow D 'in FIG. 6) in accordance with the drive signal output from the key drive control unit 24. With the movement of the actuator 32a in the downward direction, the key pressing force transmitting member 70 is also moved in the direction of arrow D ', and the hammer 48 is rotated by its own weight in the direction of arrow G' about the rotation shaft 48a as a fulcrum. With the rotation of the actuator 48, the actuator 3 of the key 30 is
0a is pushed up in the direction of arrow F ', and the key 30 is turned in the direction of arrow E'.

At this time, the rear portion 48c of the hammer 48 collides with the stopper 58, so that the two come into contact with each other.
The zero claw portion 30c comes into contact with the lower surface of the cushioning member 56.

In this manner, the state is returned from the key pressed state (the state shown in FIG. 6) by the solenoid 32 to the key released state (the state shown in FIG. 2).

Accordingly, in the first embodiment of the electronic musical instrument according to the present invention, when the tone generator 20 generates a tone signal in accordance with performance data, the key 30 is generated in accordance with the performance data.
Will be depressed or released, and the tone generator 20 is prevented from generating a tone signal in response to the depressing or releasing operation of the key 30 corresponding to the performance data. Since it is permissible for the sound source 20 to generate a tone signal in response to a key press operation / key release operation of the key 30 of the player's keyboard device 26, an automatic performance based on performance data and a performance by the player's keyboard operation 26 And can prevent double sounding.

In the first embodiment of the electronic musical instrument according to the present invention, the solenoid 32 moves the key 30 with a stroke length of about 5 mm by a drive signal corresponding to performance data.
, A large solenoid is not required, a small solenoid can be used, and since the driving range is small, the follow-up performance to performance data can be improved.

Here, when a large solenoid is arranged in the keyboard device 26, there are problems such as high power consumption required for driving, inefficiency, heavy weight of the solenoid, and increase in cost. Will be invited,
Since a small solenoid may be used in the electronic musical instrument according to the present invention, it is possible to reduce the size, weight, power consumption, and cost of the solenoid, and it is possible to completely eliminate the above-mentioned problems.

FIG. 8 is a partially cutaway explanatory view of a key 30 in a second embodiment of the electronic musical instrument according to the present invention. FIG. 8 is the same as or equivalent to FIGS. 1 to 7 are denoted by the same reference numerals as those used in FIGS. 1 to 7, and a detailed description of the configuration and operation is omitted.

The block diagram of the electronic musical instrument according to the second embodiment of the present invention is the same as the block diagram of the electronic musical instrument according to the first embodiment of the present invention shown in FIG. 1 shall be incorporated.

The keyboard device 26 of the electronic musical instrument according to the second embodiment of the present invention has 88 keys 30 each having a key number, and the structure of the keys 30 is the same as that of the first embodiment. It has the same structure as the key 30.

However, the solenoid 320 is connected to the first
Unlike the solenoid 32 of the embodiment, the actuator 320a of the solenoid 320
This is a conventional type in which the key 30 is driven and oscillated by a stroke length in a range of 0 mm, that is, the key 30 is driven up and down so as to make a full stroke.

Therefore, in the second embodiment, the key 30 is swung by the player's depression of the key, whereby not only the CPU 10 generates key operation data but also the solenoid based on the performance data. The key operation data is generated by the CPU 10 even when the actuator 320a of the actuator 320 is driven, whereby the key 30 is swung and the key is depressed.

Here, various kinds of registers and flags necessary for the execution of the program by the CPU 10 are set in the RAM 14 as described above. In the second embodiment, as will be described below. Settings are made.

That is, FIG. 9 graphically shows the flags set in the RAM 14, and FIG.
The register group set to 4 is shown in a diagram.

As shown in FIG. 9, flags corresponding to 88 keys 30 of the keyboard device 26 are stored in the RAM 14 for each key 3.
0 is set for each key number (KEY No.).

Regarding this flag, when the power of the electronic musical instrument is turned on, the flags of all the key numbers are set to "0" and initialized.
When "ON" is input, "1" is set to the flag of the key number corresponding to the note-on.
Then, when the note-off of the key number for which the flag is set to “1” is input, “0” is set to the flag for which the “1” is set.

In the state shown in FIG. 9, the note-on of key number 2, key number 4, and key number 5 is input, and the flag of each key number corresponding to the note-on is set. "1" is set,
The other flags are set to “0”.

A processing routine started by input of performance data (see FIG. 11) described later, a processing routine started by time-up of a timer (see FIG. 12), or a process started by generation of key operation data. The registers used in the routine (see FIG. 13) include the following (see FIG. 10).

In this specification, the contents (data, etc.) of each register are indicated by the same label name unless otherwise specified.

(1) TMP_N This is a temporary register for storing the key number of the note event of the performance data, that is, the key number of note-on or note-off.

Note that "N" is "an integer from 1 to n" (where "n" is a sufficiently large number), and when automatic performance based on a series of performance data ends, "N = 1" is set. It will be initialized.

(2) MAX The largest key number among the key numbers corresponding to the tone signals generated according to the performance data (that is, the maximum key number)
It means the highest pitch among tone signals generated according to the performance data. ).

When an automatic performance based on a series of performance data is completed, the register is initialized to "register MAX = -1".

(3) MIN The minimum key number (that is, the minimum key number) of the key numbers corresponding to the tone signals generated in accordance with the performance data.
It means the lowest pitch among tone signals generated according to the performance data. ).

When an automatic performance based on a series of performance data is completed, the register is initialized to "register MIN = 127".

(4) The key operation of the key 30 is detected by the KEY key switch 52, and the key number of the note event of the key operation data obtained by the CPU 10, that is, note-on or note-on. This is a temporary register for storing an OFF key number.

The operation of the electronic musical instrument according to the second embodiment of the present invention will be described below with reference to the flowcharts shown in FIGS.

First, the processing routine started by the input of the performance data shown in the flow chart of FIG. 11 will be described. The processing routine started by the input of the performance data is such that the performance data is inputted from the automatic performance device 18 to the electronic musical instrument. This is an interrupt routine that is started when a call is made.

In the processing routine started by the input of the performance data, if the performance data input from the automatic performance device 18 is note-off, the solenoid 3
20. On the other hand, when the performance data input from the automatic performance device 18 is note-on, the key-pressing drive of the solenoid 320 is instructed and the key-in drive is being generated. Processing for detecting the maximum key number and the minimum key number of the tone signal of each of the above, and setting a flag for each key number to "1";
And a process of setting a timer for each P_N.

When the processing routine started by the input of the performance data is started, first, at step S1102
, The key number of the note event of the performance data input from the automatic performance device 18, that is, the key number of note-on or note-off is stored in the register TMP_N.

Further, the value of N of the register TMP_N is set to 1
After that, the process in step S1102 ends, and the process proceeds to step S1104.

Next, in the processing of step S1104, the input performance data, that is, step S110
In the process of 2, it is determined whether or not the note event of the key number stored in the register TMP_N is note-on.

If it is determined in step S1104 that the input performance data is note-on, the flow advances to step S1106.

On the other hand, if it is determined in step S1104 that the input performance data is not note-on, the flow advances to step S1108.

Then, in the process of step S1106, since the input performance data is note-on, a key-press driving instruction is issued to the key 30 of the key number stored in the register TMP_N. Specifically, in response to the input note-on, the key drive control unit 2
The CPU 10 sends a key drive control unit 2 to the solenoid 320 so that the solenoid 320 gives a drive signal for operating the key 30 to depress the key.
Instruct 4 When a drive signal is given from the key drive control unit 24 to the solenoid 320, the actuator 320a of the solenoid 320 is driven according to the drive signal.

As shown in FIG. 8, according to the drive signal output from the key drive control unit 24, the actuator 320a
Is driven in the upward direction (the direction of arrow H in FIG. 8), the key pressing force transmitting member 70 is actuated by the actuator 320a.
Is pushed up in the direction of arrow D, so that the key 30 is pressed down in the direction of arrow I, and the actuator 30a of the key 30 presses down the actuator receiving portion 48b of the hammer 48 in the direction of arrow J. It rotates in the direction of arrow K with the pivot shaft 30a rotatably supported as a fulcrum.

Then, the arm portion 48d of the hammer 48 comes into contact with the stopper 62, thereby restricting the rotation range of the hammer 48.

The back surface of the key 30 comes into contact with the upper surface of the buffer member 56 and the upper surface of the buffer member 60.

Note that the alternate long and short dash line in FIG. 8 indicates the position of the upper surface of the key 30 in the key released state.

Here, since the actuator 320a of the solenoid 320 drives the key 30 with a stroke length in the range of about 10 mm, the key 30 is pressed by a full stroke when the key is pressed by driving the solenoid 320.

As a result, the first contact surface 520f of the primary switch 52a of the key switch 52 and the second contact surface 52g of the secondary switch 52b both come into contact with the contact board 540 (see FIG. 5). Key operation data is output from the keyboard device 26 to the CPU 10.

On the other hand, in step S1108, since the input performance data is note-off, a key release driving instruction is issued to key 30 of the key number stored in register TMP_N. Specifically, in response to the input note-off, the key drive control unit 24 instructs the key drive control unit 24 to provide the solenoid 320 with a drive signal for releasing the key 30 from the key. . The drive signal is sent from the key drive controller 24 to the solenoid 320
To the solenoid 32 according to the drive signal.
0 actuator 320a is driven.

As shown in FIG. 8, according to the drive signal output from the key drive control unit 24, the actuator 320a
Is driven in the downward direction (the direction of arrow H ′ in FIG. 8), the key pressing force transmitting member 7 is moved together with the actuator 320a.
0 ′ moves in the direction of arrow D, and the hammer 48 rotates in the direction of arrow K ′ with the rotation shaft 48a as a fulcrum by its own weight.
With the rotation of the hammer 48, the actuator 30a of the key 30 is pushed up in the direction of arrow J 'by the actuator receiving portion 48b, and the key 30 is rotated in the direction of arrow I'.

At this time, the rear portion 48c of the hammer 48 collides with the stopper 58 so that the two come into contact with each other, thereby restricting the rotation range of the hammer 48.

Further, the claw portion 30c of the key 30 is
, And returns to the key release state (the state shown in FIG. 2) (see the dashed line in FIG. 8).

Here, since the actuator 320a of the solenoid 320 drives the key 30 with a stroke length in the range of about 10 mm, the key 30 is released by a full stroke key release operation by driving the solenoid 320. Is done.

When the process in step S1108 is completed, the process jumps to the process in step S1116 and proceeds.

When step S1106 is completed, the process proceeds to step S1110, where the register TMP
"1" for the flag of the key number stored in _N
Is set, and the process proceeds to step S1112.

In the process of step S1112, the largest key number among the key numbers corresponding to the tone signals generated according to the performance data is detected.
The maximum key number of the detected tone signal being generated is stored in the register MAX.

Next, when step S1112 is completed,
Proceeding to step S1114, the smallest key number of the key numbers corresponding to the tone generated in accordance with the performance data is detected, and the smallest key number of the detected tone signal being generated is registered. Store it in MIN.

When the processing in step S1114 ends,
Proceeding to step S1116, the timer is set. This timer is provided for each register TMP_N, and when set in the processing in step S1116, counts down repeatedly at predetermined time intervals to time up.

The predetermined time is determined by the key drive control unit 24.
Is output to the solenoid 320,
This is equal to the time required to complete the vertical drive of the solenoid 32 according to the drive signal.

When the processing in step S1116 ends, the processing routine started by the input of the performance data ends.

Next, a processing routine started when the timer shown in FIG. 12 expires will be described.

The processing routine started when the timer times out is the same as the processing routine (see FIG. 11) started when the performance data is input as described above.
This is an interrupt routine that is started when at least one of the timers set for each register TMP_N in 1116 times out.

In the processing routine started when the timer times out, "1" is set to the flag in the processing in step S1110 of the processing routine (see FIG. 11) started when the performance data is input. An instruction to generate a tone signal corresponding to the key number is issued.

That is, when the processing routine started by the time-up of this timer is started, first, in the processing of step S1202, the note of the key number stored in the register TMP_N corresponding to the timer whose time has gone up -It is determined whether or not the event is note-on.

In the determination processing of step S1202, the register T corresponding to the timer whose time has expired
If the note event of the key number stored in MP_N is determined to be note-on, the process proceeds to step S1204.

On the other hand, if it is determined in step S1202 that the note event of the key number stored in the register TMP_N corresponding to the time-up timer is not note-on,
The processing routine started by the expiration of the timer ends.

In the processing of step S1204, since the note event of the key number stored in the register TMP_N corresponding to the time-up timer is note-on, the tone signal corresponding to the key number is generated. Is instructed to the sound source 20.

As a result, the musical tone according to the note-on of the key number stored in the register TMP_N is emitted to the space via the sound system 22, and the automatic performance based on the performance data is realized. .

At this time, the sound generation according to the note-on of the key number stored in the register TMP_N is performed by the timer set in step S1116 of the processing routine (see FIG. 11) started by the input of the performance data described above. Is performed after the time-up, that is, in the process of step S1106, a key pressing drive instruction is given to the key 30 of the key number stored in the register TMP_N, and then the timer is set. This is performed after the elapse of the predetermined time.

Accordingly, the timing of the instruction for the key depression drive (step S1106) and the timing of the sound generation (step S1)
204) is not the same timing but differs by the predetermined time when the timer expires,
By appropriately setting the predetermined time at which the timer times out, the solenoid 320 corresponding to the drive signal is set.
By driving the key 30 in the vertical direction, the timing at which the key 30 is actually depressed and the timing of sound generation can be matched.

Next, the processing routine started by the generation of the key operation data shown in FIG. 13 will be described. The processing routine started by the generation of the key operation data is as follows.
This is an interrupt routine that is started when the key 30 of the keyboard device 26 of the electronic musical instrument is pressed / released to generate key operation data.

That is, this is an interrupt routine that is started when the key switch 52 of the key 30 is electrically connected to the contact board 54 and the CPU 10 outputs key operation data.

In the processing routine started by the key operation data, the key number of the key operation data output from the CPU 10 is the maximum of the key numbers corresponding to the musical tones generated in accordance with the performance data. It is determined whether the key number is between the first key number and the minimum key number.

In this determination, when it is determined that the key number of the key operation data output from the CPU 10 is between the maximum key number and the minimum key number, the CPU 10 It is assumed that the output key operation data is based on key depression by driving the solenoid 320 according to the performance data, and the sound source 2
There is no pronunciation instruction for 0.

On the other hand, if it is determined in this determination that the key number of the key operation data output from the CPU 10 is not between the maximum key number and the minimum key number, the CPU 10 The output key operation data is considered to be based on a key pressed by the player's hand, and the tone generator 20 generates a tone signal based on the key operation data.

That is, when the processing routine started by generation of the key operation data is started, first, at step S
In the process of 1302, the key number of the note event of the key operation data output from the CPU 10 is stored in the register KEY.

When the processing in step S1302 ends,
Proceed to step S1304 to proceed to step S1302.
In the above processing, the key number stored in the register KEY is the maximum key number of the tone signal being generated stored in the register MAX, and the minimum key number of the tone signal being generated stored in the register MIN. It is determined whether or not the key number is between.

In the judgment processing in step S1304, the register KEY is used in the processing in step S1302.
Is the key number between the maximum key number of the musical tone signal being generated stored in the register MAX and the minimum key number of the musical tone signal being generated stored in the register MIN. If it is determined that the key is not a number, the key stored in this register KEY
It is considered that the key operation data of the number is generated by a key pressing operation / key releasing operation by playing by the player, and the process proceeds to step S1306.

On the other hand, in the determination processing in step S1304, the key number stored in the register KEY in the processing in step S1302 is stored in the register MAX.
Is determined to be between the maximum key number of the musical tone signal being generated stored in the register MIN and the minimum key number of the musical tone signal being generated stored in the register MIN. The key operation data of the key number stored in the register KEY is regarded as generated by the key pressing operation / key releasing operation by the driving of the key 30 by the solenoid 320, and the process proceeds to step S1310.

In the process of step S1306, it is determined whether or not the performance data of the key number stored in the register KEY is note-on.

If it is determined in step S1306 that the performance data of the key number stored in the register KEY is not note-on, the process jumps to step S1318.

On the other hand, if it is determined in step S1306 that the performance data of the key number stored in the register KEY is note-on, the flow advances to step S1308.

In the process of step S1308, the tone generator 20 is instructed to generate a tone signal corresponding to the key number stored in the register KEY.

That is, in the process of step S1308, the key operation data that is determined to have been generated by the key press operation / key release operation of the player's hand by the judgment process in step S1304 is note-on. A tone signal is generated by the sound source 20 based on the key operation data of the key number stored in the register KEY.

Then, the generated tone signal is generated by the sound source 2
0 is output to the sound system 22 and is emitted to the space as a musical sound that can be heard through the sound system 22, and the performance by the keyboard operation 26 of the player is realized.

When the processing in step S1308 is completed, the processing routine started by generating the key operation data is completed.

On the other hand, in the process of step S1310, it is determined whether or not the performance data of the key number stored in the register KEY is note-on.

In the determination processing in step S1310, when it is determined that the performance data of the key number stored in the register KEY is note-on, the key pressing operation / release by the driving of the key 30 by the solenoid 320 is performed. Since the key operation data regarded as generated by the key operation is note-on, the processing routine started by generating the key operation data is terminated without generating a tone signal by the sound source 20.

On the other hand, if it is determined in step S1310 that the performance data of the key number stored in the register KEY is not note-on, the flow advances to step S1312.

In the process of step S1312, “0” is set to the key number flag stored in the register TMP_N, and the process proceeds to step S131.
Go to step 4.

Next, in the process of step S1314, the largest key number among the key numbers corresponding to the tone signals generated according to the performance data is detected, and the detected tone being generated is generated. The maximum key number of the signal is stored in the register MAX.

When the processing in step S1314 is completed, the flow advances to step S1316 to detect the minimum key number among the key numbers corresponding to the tone signals generated in accordance with the performance data. The minimum key number of the detected tone signal being generated is stored in the register MIN.

As described above, in the processing of steps S1314 and S1316, the value of register MAX and the value of register MIN in the case of note-on are detected and stored, so that the value of register MAX and the value of register MIN are stored.
Is updated in real time each time a note is turned on / off.

When the processing in step S1316 ends, the flow advances to processing in step S1318.

In the process of step S1318, the tone generator 20 is instructed to stop generating the tone signal corresponding to the key number stored in the register KEY.

Therefore, the solenoid 3 corresponding to the performance data
The key operation data generated by operating the key 30 by driving the key 20 and the key 3 by the player flicking the key 30
If the key operation data generated by operating 0 is note-off (that is, in this case, the key 30 has been released), the key stored in the register KEY in step S1318. -An instruction to stop the generation of the tone signal corresponding to the number is issued.

Therefore, in the second embodiment of the electronic musical instrument according to the present invention, the sound source 20 generates a musical tone in accordance with the performance data, and furthermore, the key depressing operation / key releasing operation of the key 30 in accordance with the performance data. Is made.

Key operation data is transmitted from the keyboard device 26, and a note event corresponding to a corresponding key number is transmitted to the sound source 20 when a player performs a key release operation. However, the key number of the key operation data from the keyboard device 26 is the largest key number (register MA) among the performance data being generated by the sound source.
X value) and the minimum key number (the value of the register MIN), the key operation data is regarded as a key pressed by the performance data, and the key operation is performed. The note event corresponding to the data is not transmitted to the sound source 20.

Therefore, it is possible to prevent double sounding and perform a duet between an automatic performance based on performance data and a performance by a player's keyboard operation.

In the electronic musical instrument according to the embodiment of the present invention, when the key operation data transmitted from the keyboard 26 has a predetermined pitch, the sound source 20 is not instructed to start or stop sounding. Processing, but
It is needless to say that the present invention is not limited to this. For example, a sound source having two inputs, one input to which performance data from an automatic performance device is input, and the other input to The key operation data from the keyboard may be input, and a tone signal of a predetermined pitch in the key operation data input from the keyboard may be previously ignored on the sound source side.

In the electronic musical instrument according to the second embodiment of the present invention, the maximum key number (register MAX) and the minimum key number (register MI) are set.
N) is not transmitted to the sound source 20. However, the present invention is not limited to this. For example, the keyboard may be divided into an upper key region and a lower key region. One area may be split so that the musical tone corresponding to the note event in the upper key range is not generated, and the tone is generated according to the note event in the lower key range.

In the electronic musical instrument according to the second embodiment of the present invention, the maximum key number (register MAX) and the minimum key number (register MIN) each time a note-on is sent. ) Is detected, but it is a matter of course that the present invention is not limited to this, and the maximum key number (register MAX) and the minimum key number (register (Register MIN).

In this case, when the header portion of the automatic performance data is reproduced, the maximum key number (register MA)
X) and the minimum key number (register MIN) are set, so that each time a note-on is sent, the maximum key number (register MAX) and the minimum key number (register MIN) are changed. There is no need to detect.

[0153]

Since the present invention is constructed as described above, the key is driven simultaneously with performing the automatic performance with a simple structure to prevent double sounding, and the key is moved to a predetermined position. When a press is detected, an excellent effect that a musical sound can be generated is achieved.

[Brief description of the drawings]

FIG. 1 is a block diagram of an electronic musical instrument according to a first embodiment of the present invention.

FIG. 2 is a partially cutaway side view showing a key release state of the keyboard device of the electronic musical instrument shown in FIG. 1;

FIG. 3 is an explanatory side sectional view of the key switch in the state shown in FIG. 2;

FIG. 4 is a partially cutaway side view showing a key-pressed state of the keyboard device of the electronic musical instrument shown in FIG.

FIG. 5 is an explanatory side sectional view of the key switch in the state shown in FIG. 4;

FIG. 6 is a partially cutaway side view showing a key pressed state by a solenoid of the keyboard device of the electronic musical instrument shown in FIG. 1;

FIG. 7 is an explanatory side sectional view of the key switch in the state shown in FIG. 6;

FIG. 8 is a partially cutaway side view of a key of an electronic musical instrument according to a second embodiment of the present invention.

FIG. 9 is an explanatory diagram schematically showing flags set in a RAM according to the second embodiment of the present invention.

FIG. 10 is an explanatory diagram schematically showing registers set in a RAM according to the second embodiment of the present invention.

FIG. 11 is a flowchart of a processing routine activated by input of performance data.

FIG. 12 is a flowchart of a processing routine started when a timer expires.

FIG. 13 is a flowchart of a processing routine started by generation of key operation data.

[Explanation of symbols]

 Reference Signs List 10 central processing unit (CPU) 12 bus 14 read-only memory (ROM) 16 random access memory (RAM) 18 automatic performance device 20 sound source 22 sound system 26 keyboard device 28 MIDI interface 30 key 32, 320 solenoid 32a , 320a Actuator 42 Keyboard chassis 48 Hammer 52 Key switch 52a Primary switch 52b Secondary switch 52c Support 52f First contact surface 52g Second contact surface 54 Contact board 70 Keying force transmitting member 100 External MIDI device

Claims (2)

[Claims] A key for generating key operation data when the key is swung to a predetermined position; and a signal for generating a predetermined signal based on performance data. Generating means, key driving means for driving the key based on the predetermined signal generated by the signal generating means, and swinging the key within a range not reaching the predetermined position, based on performance data An electronic musical instrument having a sound source that generates a tone signal and generates a tone signal based on key operation data generated on the keyboard. 2. A keyboard having a plurality of swingable keys and generating key operation data including a pitch corresponding to the keys in accordance with the swinging of the keys, and a predetermined signal based on the performance data. And key driving means for driving the key based on the predetermined signal generated by the signal generating means to swing the key, and generating a tone signal based on performance data. A sound source that generates a tone signal based on the key operation data generated on the keyboard; and a case where the pitch of the key operation data generated on the keyboard is a pitch corresponding to a key in a predetermined key range. Prohibiting means for prohibiting generation of a tone signal based on key operation data generated on the keyboard in the sound source.