JPH04234088A - Electronic musical instrument - Google Patents

Abstract

PURPOSE:To eliminate the chances of students to produce abnormal sounds through misoperations in a music classroom by limiting the sound generation of a keyboard electronic musical instrument to basic kinds of sounds. CONSTITUTION:First, divide plural number of operation pieces 15a to 15j, which set musical information including tone colors, into two groups 14a and 14b then, set the information related to the kinds of musical instruments by a musical instrument kind setting means 18 and make an invalidating control of the operations of operation pieces 15d to 15j, which belong to the one group, employing the information above.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to electronic musical instruments such as electronic keyboards and organs.

0002

2. Description of the Related Art Keyboard electronic musical instruments such as electronic keyboards (electronic pianos, electronic organs) are designed to allow the user to specify various musical instrument tones, sound effects, rhythm accompaniment sounds, chord accompaniment sounds, etc. by operating a switch. With such a wealth of functions, in music classrooms and the like, students' erroneous operations can cause abnormal noises unrelated to the lesson, which can disrupt the lesson schedule and tempo, especially in group lessons. For this reason, electronic musical instruments used for lessons in music classes and the like have been specialized machines with minimal functionality.

0003

[Problems to be Solved by the Invention] Since the production volume of classroom-only machines is smaller than that of general-use machines, mass production effects cannot be expected. Furthermore, during lessons, each student may set various tones (musical instruments) for ensemble practice, so a single-function device that only provides piano sounds, for example, has the problem of limiting the content of the lessons.

SUMMARY OF THE INVENTION In view of this problem, it is an object of the present invention to provide an electronic musical instrument that can have various functions or simple functions depending on the settings.

[0005]

[Means for Solving the Problems] As shown in FIG. 1, the electronic musical instrument of the present invention includes a musical tone circuit section 12 that forms a musical tone signal for sound generation in response to the operation of a keyboard section 10, and a musical tone signal that is added to the musical tone signal. Operation panel section 1 for setting musical tone element information such as the tone to be played
4. The operators on the operation panel section 14 are divided into a functional group (1) that performs basic sound production and a functional group (2) that provides other additional functions. Model settings/
A canceling means 18 is provided to select between a model type limited to basic sounding tones and a model type with additional functions added thereto. The control section 16 controls the validity/invalidity of operations for each group of the operation panel section 14 according to the operation of the model setting/cancellation means 18, and provides only valid panel operation information to the musical tone circuit section 12. The set model type can be canceled by operating the model setting/cancellation means 18. The unlocked state corresponds to a model type in which all functions can be used. Therefore, the model setting/cancelling means 18 basically only needs to set/cancel the model type limited to the above-mentioned basic functions.

The model setting/cancelling means 18 retains its setting information even when the power is turned off. Therefore, when the power is turned on, the electronic musical instrument operates according to the set model type. In one aspect of the present invention, the model setting/cancellation means 18 includes an operation means for temporarily canceling the setting while maintaining the setting state. If you temporarily cancel the model settings using this operation method, you will be able to use all the functions of the operation panel.
When the power is turned on again after the power is turned off, the functions of the operation panel section 14 are reset based on the model information held by the model setting/cancellation means 18.

According to another aspect of the present invention, a parameter setting section 20 is provided which operates in response to setting information from the model setting/cancellation means 18. This parameter setting section 20
derives parameters for setting musical tone elements such as volume to the musical tone circuit section 12 in accordance with the set model information. Therefore, optimal parameters are automatically set depending on the model.

[0008] The model setting/cancelling means 18 is configured to perform setting/cancellation (including temporary cancellation) by using the operators on the keyboard section 10 or the operation panel section 14 and the power switch, and by operating a combination of these. You can also do that.

[0009]

[Function] For example, in a music classroom, the operation panel section 1
A limited functional group (1) that performs the basic pronunciation of 4
) Set the model type so that the controls are enabled. With this setting, even if the student operates the operator corresponding to the functional group (2) of the additional functions, it will be invalidated, and abnormal sounds that differ from the lesson content will not occur. If this model setting is canceled, all functions of the operation panel 14 can be used. Furthermore, by temporarily canceling the setting while retaining the set model information, it becomes possible to perform an ensemble performance with a plurality of parts having different tones. This temporary release state is cleared by turning off the power.
When the power is turned on, the functions available on the operation panel section 14 are reset based on the retained model information. When the model setting/cancelling means 18 sets, for example, a model type for a concert, the parameter setting section 20 provides the tone circuit section 12 with parameters that will maximize the sound volume.

0010

Embodiment FIG. 2 is a block circuit diagram of an electronic musical instrument showing an embodiment of the present invention. The control unit 16 in FIG.
a, a program ROM 16b, and a work RAM 16c. keyboard section 10 and operation panel section 14a,
14b is connected to the CPU 16a. Musical tone circuit section 1
2 is composed of a sound source circuit 12a, a waveform ROM 12b, and a D/A converter 12c. An operation on the keyboard section 10 is detected by the CPU 16a, and a key code that determines the pitch and key depression data that determines the pitch are sent to the sound source circuit 12a. Further, the CPU 16a detects operations on the panel sections 14a and 14b, and sends setting data or parameters such as tone color and accompaniment pattern to the sound source circuit 12a. Sound source circuit 1
2a stores the PCM signal of the specified tone in the waveform ROM 12.
B is read out at a pitch corresponding to the key code, its envelope, amplitude, etc. are processed using set parameters and key press pressure data, and the processed data is output to the D/A converter 12c. D/
The A-converted analog tone signal is output to the speaker 24 via the amplifier 22.

The model setting/cancelling means 18 shown in FIG. 1 can be composed of switches 18c and 18d, such as dip switches, connected to the CPU 16a via an input/output circuit 18b. The model setting/cancelling means 18 is not operated frequently and must not be operated erroneously by students in the music class, so it is located in a position where it cannot be easily operated. In the following embodiments, a switch 18c such as a dip switch,
18d, a switch 18a linked to the power button connected to the input/output circuit 18b and the keyboard section 10 or panel section 1.
Model setting/cancellation is performed based on detection of simultaneous operation with 4a and 14b.

FIG. 3 shows the main parts of the operation panel section 14. The operation panel section 14 includes a section 14a corresponding to a functional group (1) for performing basic sound production, and a section 14b corresponding to a functional group (2) for providing other additional functions. Although the operation buttons in each group are divided into two in this example, the button arrangement does not have to be clearly divided. Part 14a of group (1) is piano-1, piano-
2. Contains operation buttons 15a to 15c corresponding to piano-3. Part 14b of group (2) includes strings-1,
─2, Percussion ─1 to 3, Effect ─1, ─2
It includes operation buttons 15d to 15j for setting or adjusting tones other than the basic tone, rhythm accompaniment, onomatopoeia, tune, transpose, and the like.

The model types that can be set by the model setting/cancellation means 18 are those for home practice (model information = 0), for music classes (model information = 1), and for concerts (model information = 2).

When the model is set for home practice, all the operation buttons 15a to 15j on the operation panel section 14 shown in FIG. 3 can be operated. In other words, the basic tones used for practice (piano ─
In addition to 1 to ─3), you can also obtain ensemble pronunciations (strings ─1, ─2, etc.) and sound effect (onomatopoeic) pronunciations.

[0015] When the model is set for a music classroom, only the operation buttons 15a to 15c of group (1) of the operation panel section 14 can be operated, and operations on other buttons are disabled. Therefore, this model can only produce basic sounds for practice (piano sounds and organ sounds). Furthermore, when the classroom model is set, the parameter setting section 20 operates and the sound volume is set higher than that for home use. Further, the mode of this model can be temporarily canceled by operating the model setting/cancelling means 18, and the function can be returned to the same as that of the home model. This temporary release is valid while the power is on, but once the power is turned off and then turned on again, it is reset to the classroom model.

When set as a concert model, functions equivalent to those of a home model can be obtained, and the parameter setting section 20 sets the volume parameter so that the sound volume is maximized.

The model setting/cancelling means 18 shown in FIG. 1 includes a backup area 18e set in a part of the work RAM 16c shown in FIG. This backup area 18e is protected by a battery or the like so that the stored contents will not be lost even if the power is turned off. The model information (0 to 2) set by the model setting/cancellation means 18 is held in the backup area 18e of the work RAM 16c. Therefore, even if the power is turned off, the model type that was previously set will be reset when the power is turned on.

FIGS. 4 and 5 show the processing procedure of the CPU 16a regarding the model type setting/cancellation operation.

FIG. 4 shows the initialization process when the power is turned on. First, in step 41, it is determined whether or not a reset operation is to be performed. In this example, the reset is enabled by pressing both the C and M keys on the keyboard section 10 at the same time when the power is turned on. When the switch 18a linked to the power button and the C and M keys are turned on at the same time, the CPU 16a
Determined as a reset. This reset corresponds to the cancellation operation in the model setting/cancellation means 18 in FIG.
When a reset operation is detected in step 1, the entire work RAM 16c including the backup area 18e is cleared in step 52. Therefore, the model information stored in the backup area 18e disappears, and the model information is set to 0, that is, the home model.

Thereafter, in step 53, registers and the like of the sound source circuit 12a are initialized, and the initialization process is completed. Note that the model setting/cancellation means 18 may be provided with a reset switch 18d exclusively for cancellation. If no reset operation is detected in step 41, then in step 42 the work RAM 16c is cleared leaving the backup area 18e storing model information. Next, in step 43, it is determined whether the classroom model setting switch S2 is pressed when the power is turned on. In this example, the operation button 15a of piano-1 in group (1) on the operation panel 14 is used as the switch S2. CPU16a
determines that the classroom model setting operation has been performed when the switch 18a linked to the power button and the switch corresponding to the operation button 15a are turned on at the same time. If the switch S2 is on, then in step 45, classroom model information = 1
is written to a predetermined register in the backup area 18e of the work RAM 16c. Further, in step 46, a classroom flag indicating that the classroom model mode is set is set, and the process proceeds to step 47.

If the switch S2 is not turned on in step 43, the backup area 18e is
Clear the model information of , and proceed to step 47. In step 47, it is determined whether the concert model setting switch S1 is on. This switch S1 corresponds to a switch 18c such as a dip switch included in the model setting/cancelling means 18. Note that as this switch S1, short circuit processing using a jumper wire or a diode attached to the circuit board may be used. If the switch S1 is on, in the next step 48, concert model information=2 is written in the backup area 18e, and in step 49, the classroom flag is cleared. And in the next step 50,
As a volume value, a maximum value MAX is set in a parameter register that determines the volume of the sound source circuit 12a. This process is shown in Figure 1.
For example, when the volume is variable in 16 steps, the maximum value 16 is sent to the tone generator circuit 12a of the musical tone circuit section 12.

On the other hand, when it is determined in step 47 that the switch S1 is off, the model information has been cleared in the previous step 44, so it is determined that the data for the household model = 0 has been set as the model information. Become. At this time, in the next step 51, the volume value is set to half of the maximum value 16, ie, MAX-8.

When step 50 or 51 is completed, the sound source circuit 12a is initialized in step 53, and the initialization processing at power-on is completed. Thereafter, a processing loop regarding the operation of the keyboard section 10 or the operation panel section 14 shown in FIG. 5 is entered.

In step 54 of FIG. 5, key processing shown in detail in FIG. 6 is performed, and then in step 55 the operation panel section 14 is
Detection scanning of all the controls (buttons) is performed. When any of the controls is operated, it is determined in step 56 whether it is on or off, and an off event (operation button off) is generated.
If so, the process returns to before step 54 and enters the loop again.

When it is determined in step 56 that it is an on event (operation button on), in the next step 57 it is determined whether the operation is a button operation in the portion 14b corresponding to group (2) of the operation panel section 14. It is determined whether or not. If not, it is a button operation in the portion 14a corresponding to group (1), so the process goes through steps 58 and 59 to step 60.
Then, the tone parameters corresponding to the buttons 15a to 15c in group (1) are set in the register of the tone generator circuit 12a.

In step 58, turning on of the system mode switch 17 in group (1) is detected, and based on this, in step 59, a system mode flag is set. System mode is used to control system variables, such as pitch (
This mode is used to set variables for fine adjustment (pitch).

When a button operation in group (2) is detected in step 57, it is determined in the next step 61 whether or not the system mode flag is set, and if YES, in step 65 the system parameters are set. and loops before step 54. Note that the system parameters are changed using up/down buttons (not shown) provided in the operation section 14b of group (2). For example, when tuning, the pitch parameter is increased or decreased by a minute step each time one of the up/down buttons is touched. When transposing, the pitch increases or decreases by a semitone each time one of the up/down buttons is touched.

If it is determined in step 61 that it is not the system mode, then in step 62 the switch S is turned on.
Simultaneous pressing of 3 and S4 is detected. This switch S3
, S4 correspond to the operation buttons 15d and 15e of strings -1 and -2 belonging to group (2) of the operation panel section 14. When simultaneous pressing of these switches S3 and S4 is detected, the classroom model flag is cleared in step 64.
This allows the classroom model mode to be temporarily canceled. Note that a button exclusively for temporary cancellation may be added to the model setting/cancellation means 18. When the classroom model mode is canceled, all operation buttons on the operation panel section 14 become valid. As described above, this temporary release state is canceled when the power is turned off, and the next time the power is turned on, the classroom model mode is reset based on the classroom model information=1 stored in the backup area 18e of the RAM 16c.

If it is not detected in step 62 that the switches S3 and S4 are on, the process proceeds to step 63, where it is determined whether the classroom model flag is 1, and if it is 1, the process returns to the loop from step 54. That is, in step 57, the group (
Even if it is determined that it is an on event of the operation button in 2), the operation is invalid in the classroom model mode, and no parameters are set or changed.

On the other hand, if it is determined in step 63 that the classroom model flag is not set, since the model is set for home use or concert use, the process proceeds to step 60 and the group (
Parameters (timbre, rhythm type, etc.) corresponding to the operation of any of the operation buttons 15d to 15j in 2) are set.

FIG. 6 is a flow diagram showing details of the key processing routine 54 of FIG. In this routine, first a detection scan of all keys is performed in step 71, then steps 72 and 7.
3. It is determined whether the event is an off event (key release) or an on event (key press). If it is an on event, step 74
A corresponding key is assigned to one of the plurality of sound generation channels of the sound source circuit 12a. Furthermore, in the next step 75, it is determined whether the model information is 0 or not. If the model is for home use (=0), the process proceeds to step 77, but if it is a model for classroom use (=1) or a model for concerts (=2), in step 76, a bias according to the model is added to the key touch strength information. Values are added. That is, for a model for classroom use, for example, 4 is added as a bias value, and for a model for concert use, for example, 8 is added as a bias value. As a result, the volume corresponding to the key press touch is set higher depending on the model.

In the next step 77, an operation is performed to convert the touch information into a volume value. Further, in step 78, the timbre information is transferred to the sound source circuit 12a, and in step 79, a sound generation operation is performed.

In the case of an off event, the process proceeds from step 72 to step 80, in which the sound generation channel to which the released key number is assigned is searched, and then step 81 is executed to mute the sound of that channel.

[0034]

[Effects of the Invention] According to the present invention, it is possible to set a model in which only the operation of a specific basic operator of the operation section for setting musical tone information is valid, and in such a setting state, for example, only piano sounds are produced. Since the function is limited so that musical instrument sounds, rhythm accompaniment sounds, etc. of other tones are not emitted, it is possible to prevent students from producing abnormal sounds due to erroneous operations in music classes and the like. Since such limited functions are set for general models that can specify a variety of tones, there is no need to manufacture a special model for music classrooms, and therefore, mass production effects can be expected. In addition, even if the model is set to enable only basic control operations, it is configured so that this can be temporarily canceled, so each student's electronic instrument can be used for multiple parts with different tones, etc. It is possible to perform an ensemble performance. Furthermore, since the model information of the previously set limited functions is saved, the model can be automatically reset based on this model information, eliminating the need for complicated operations.

[Brief explanation of the drawing]

FIG. 1 is a functional block diagram showing the essential features of an electronic musical instrument according to the present invention.

FIG. 2 is an overall circuit diagram of an electronic musical instrument according to an embodiment of the present invention.

FIG. 3 is a plan view of essential parts of the operation panel section.

FIG. 4 is a flow diagram of CPU processing performed in response to an operation of an operator.

FIG. 5 is a flow diagram of CPU processing performed in response to an operation of an operator.

FIG. 6 is a flow diagram of CPU processing performed in response to a keyboard operation.

[Explanation of symbols]

10 Keyboard section 12 Musical tone circuit section 14 Operation panel section 14a Group (1) part 14b Group (2) part 16 Control section 18 Model setting/cancellation method 20 Parameter setting section

Claims (11)

[Claims] 1. A musical tone circuit that forms pronunciation information according to the operation of a keyboard section, an operation section having a plurality of operators for setting musical tone information such as a tone to be given to the pronunciation information, and setting model information. an electronic musical instrument comprising: a model setting means for setting the model; and a control means for disabling operations of some of the plurality of operators in accordance with the set model information. 2. The plurality of operators are divided into a first group for setting basic musical tone information and a second group for setting other musical tone information, and the model setting means selects the first group. 2. The electronic musical instrument according to claim 1, wherein when model information is set that enables only the operations of the second group of operators, the control means disables the operations of the second group of operators. 3. The device type setting means includes means for canceling the set model information, and in the canceled state, all operations of the plurality of operators are valid. electronic musical instrument. 4. The model setting means sets the model information based on turning on both a switch linked to the power switch and one or more of the operators included in the keyboard section and the operation section. The electronic musical instrument according to claim 1, characterized in that: 5. The means for canceling the model information is configured to release the model information based on turning on both a switch linked to the power switch and one or more of the operators included in the keyboard section and the operation section. 4. The electronic musical instrument according to claim 3, wherein model information is canceled. 6. The electronic musical instrument according to claim 1, wherein the model setting means includes a storage means for storing the model information even when the power is turned off. 7. The electronic musical instrument according to claim 1, wherein the model setting means includes canceling means for temporarily canceling the set model information while the power is on. 8. The electronic musical instrument according to claim 7, wherein the canceling means cancels the model information set based on specific simultaneous operations of two or more operators of the operating section. 9. The electronic musical instrument according to claim 1, further comprising a parameter setting section that sets the variable parameter of the musical tone information to a predetermined value based on the model information set by the model setting means. 10. The electronic musical instrument according to claim 9, wherein the variable parameter is a sound volume. 11. The second group includes setting means for setting variable parameters of musical tone information, and in a model setting state in which the operations of the operators of the second group are disabled, the operations of the second group are performed. 3. The electronic musical instrument according to claim 2, wherein the first group includes a partial release operator for validating at least a part of the operation including the child setting means.