JP2004045902A - Electronic musical instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic musical instrument capable of varying the spatial extent of harmony according to the kind of a selected timbre. <P>SOLUTION: This electronic musical instrument has a chord detection part 11, a harmony addition part 12 which allocates note data corresponding to respective preset harmony parts according to the detected chord and sets two-dimensional or three-dimensional sound image localization of respective harmony parts according to the kind of the set timbre, a key and tone assigner 13 which allocates the respective note data of the harmony parts whose sound image localization is set to musical sound generation channels, and a musical sound generation part 14 which reads out the respective note data corresponding to parameter-set timbre data by the allocated musical sound generation channels to generate a musical sound. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an electronic musical instrument capable of performing an ensemble.
[0002]
[Prior art]
With an electronic piano with an automatic accompaniment, an electronic organ, or the like, one can easily enjoy an ensemble performance by himself.
[0003]
The automatic accompaniment in this case means that when the rhythm and tempo are set in advance, the automatic accompaniment is turned on, and the keyboard is played, the chord is discriminated from the key being pressed and the accompaniment is added.
[0004]
In addition to the accompaniment, there is also a function of adding a harmony to the melody being played, for example, three times, four times, or the like, based on the result of the chord determination.
[0005]
[Problems to be solved by the invention]
However, considering the examples of vocal tones that can be selected in the ensemble performance as described above, adding harmony means that multiple people are vocal, and multiple people are from the same place I can't speak, so it spreads out in space. This applies not only to vocals, but also to solo instruments such as wind instruments and string instruments.
[0006]
On the other hand, keyboard instruments such as pianos often make harmony by holding down the keyboard alone, so there is not much change in the spread due to playing with the harmony.
[0007]
In the above electronic musical instruments, harmony was added by changing the pitch, such as 3rd up, 4th down, etc., but no spatial expansion was added to the harmony. .
[0008]
Nor was it possible to change the spatial extent of the harmony with musical instruments.
[0009]
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an electronic musical instrument capable of changing the spatial spread of a harmony depending on the type of a selected timbre.
[0010]
[Means for Solving the Problems]
The electronic musical instrument according to the present invention,
Code detection means for detecting a code from key press information;
Harmony adding means for allocating preset note data corresponding to each harmonic part from the detected chord, and setting a two-dimensional or three-dimensional sound image localization of each harmonic part according to the type of the set timbre. ,
Allocating means for allocating each note data of each harmony part for which the sound image localization is set to a musical tone generation channel,
A fundamental feature is that it has a tone generating means for reading out each note data corresponding to the tone color data for which the parameter is set for each assigned tone generating channel and generating a tone.
[0011]
By default, or for a predetermined number of harmonic parts by panel setting, etc., the harmonic note part of the detected chord is assigned to the harmonic note part of which the basic note data of the detected chord is 1, and the remaining note data of the chord is assigned to the harmonic note. Each is assigned to a different harmonicipart. Further, a two-dimensional or three-dimensional sound image localization of each harmony part is set by the harmony adding means based on the kind of the timbre for which the parameters are set by the panel setting or the like. The assigning means assigns each note data of each of the harmony parts for which the sound image localization is set to a tone generating channel, and the tone generating means corresponds to the tone data set for each assigned tone generating channel. The corresponding note data is read out, and a musical tone is generated.
[0012]
Here, each of the harmony parts by the harmony adding means (here, for simplicity of explanation, the note data of the basic harmony part is described as being set to a harmony part three times higher and a harmony part four times lower than the note data of the basic harmony part) The two-dimensional sound image localization means that the volume of each part in a plane direction (horizontal direction to the listener, etc.) is set to an arbitrary state (claim 3). When the volume depth of the note data of both L and R is 70, the R-side volume depth of the third upper part is 100. The L-side volume depth is 40, and the R-side volume depth of the fourth lower part is 40. Setting the breadth depth (two-dimensional sound image localization) so that the L-side volume depth is 100.
[0013]
In addition, the three-dimensional sound image localization means providing a difference in the delay setting in the depth direction together with the two-dimensional localization setting as described above (Claim 4). Such a sound volume setting is performed, and a delay is set such that a delay is 0 ms in the first row of the respective harmoniciparts, 5 ms in the second row, and 10 ms in the third row. (Of course, this delay time is set differently depending on the distance in the depth direction, etc.).
[0014]
The configuration of claim 2 is a configuration in which an automatic accompaniment function is further added to the configuration of claim 1, and more specifically,
Code detection means for detecting a code from key press information;
Automatic accompaniment means for executing automatic accompaniment based on key depression information;
Harmony adding means for allocating preset note data corresponding to each harmonic part from the detected chord, and setting a two-dimensional or three-dimensional sound image localization of each harmonic part according to the type of the set timbre. ,
Allocating means for allocating each note data of each of the harmoniciparts for which the sound image localization is set to a musical tone generation channel, and allocating a musical tone generation channel by performing automatic accompaniment similarly;
A tone generating means for reading out note data corresponding to tone color data for which parameters are set for each assigned tone generating channel and generating a tone.
[0015]
As described above, by further adding the automatic accompaniment function, the ensemble performance can be performed more enjoyably.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing an external configuration of an electronic organ 100 equipped with a performance control device according to an embodiment of the present invention, FIG. 2 is a basic circuit diagram of the electronic organ, and FIG. 3 is a functional block of the present invention. FIG. The electronic organ 100 performs a chord discrimination from a pressed key according to a setting of a panel operation unit 115 described later, and, based on the chord discrimination result, determines a melody played by the player three times higher and four times higher. The ensemble can be played with the harmony below.
[0017]
As shown in FIG. 2, the electronic organ 100 includes a CPU (Central Processing Unit) 111, a RAM (Random Access Memory) 112, a ROM (Read Only Memory) 113, and a key scan circuit 114a on a system bus 110. A connected keyboard unit 114, a panel operation unit 115 connected via a panel scan circuit 115a, a display unit 116 connected via a display control circuit 116a, and waveforms (designated as tone parameters) corresponding to each tone. A tone generator 117 capable of simultaneously generating 64 channels by a sound source having data in a waveform memory 117a and reading waveform data set by tone parameters from the memory, and a DSP effect adding circuit 118 are connected to each other. Cage Passing various commands and data are made to these devices via the system bus 110. The DSP effect adding circuit 118 is electrically connected to a D / A conversion circuit 119 for converting a musical tone to which an effect such as reverb is added into an analog signal, and an amplifier for amplifying the analog sound and a sound system 120 such as a speaker for generating an external sound. It is connected to the.
[0018]
The CPU 111 controls each section of the electronic organ 100 including the configuration of the present invention in accordance with a control program stored in a program memory storage section of the ROM 112, and executes an application program stored in the program memory storage section. This is a configuration in which data processing is performed by using the RAM 112 as a work area, and further using various fixed data stored in the ROM 113 as necessary.
[0019]
The RAM 112 stores status information of the apparatus and is used as a work area of the CPU 111. Various registers, flags, and the like for controlling the electronic organ 100 are defined in a RAM 112, and the RAM 112 is accessed by the CPU 111 via a system bus 110.
[0020]
The ROM 113 stores a program for controlling the entire electronic organ 100 as described above, and also stores various fixed data (including a key assignment table, a code detection table, and the like) used by the CPU 111. .
[0021]
The keyboard unit 114 is composed of a keyboard of the electronic organ 100, and includes a plurality of keyboards and a keyboard switch that opens and closes in response to key depression and key release. A key scan circuit 114a interposed between the keyboard unit 114 and the system bus 110 checks the state of the keyboard switch, and generates touch data indicating the strength (speed) of keyboard touch from a signal indicating ON / OFF of the key switch. At the same time, it outputs ON or OFF information and its keyboard number. The ON / OFF information, the keyboard number, and the touch data are sent to the CPU 111 via the system bus 110 as key press information.
[0022]
The panel operation unit 115 is provided with various switches such as a power switch and a tone selection switch, a mode selection touch panel, a volume variable device, and the like. The panel scan circuit 115a interposed between the panel operation unit 115 and the system bus 110 checks the set / reset state of each switch and the touch panel provided in the panel operation unit 115, and turns on the panel switch that is turned on. The data is detected and sent to the CPU 111.
[0023]
In the present embodiment, setting of a normal performance mode and an ensemble performance mode in which a melody is automatically added to a melody by the panel operation of the panel operation unit 115 (or a mode setting in which an automatic accompaniment can be added to these modes) ), And a tone color setting that can be set (selected) so that the user can play the keyboard with his favorite tone color.
[0024]
The display unit 116 is connected to the system bus 110 via a display control circuit 116a. Under the control of the CPU 111, various operation states of the panel operation unit 115, the operation state of the electronic organ 100, the mode setting state, This is a configuration in which a tone setting state and the like are displayed.
[0025]
FIG. 3 is a functional block diagram of a configuration according to the present invention in which the melody played by the player is incorporated into the electronic organ 100 as a configuration capable of performing an ensemble performance with a harmony. As shown in the figure, the configuration in which the ensemble performance function is executed is a timbre in which, when a performer selects a timbre by setting by the panel operation unit 115 and the panel scan circuit 115a, the timbre parameter is set. The setting unit 10, a code detection unit 11 that detects a code from key press information of the keyboard unit 114 scanned by the key scan circuit 114 a, and a preset default (or a panel operation unit 115) Harmony addition unit that allocates note data corresponding to each harmonic part, and sets a two-dimensional or three-dimensional sound image localization of each harmonic part according to the type of tone for which the parameter is set. 12 and each note data of each harmony part for which sound image localization is set A key & tone assigner 13 corresponding to an assigning unit to be assigned to a predetermined channel of a tone generating circuit 117 described later, and note data corresponding to tone color data for which parameters are set are read out for each assigned tone generating channel to read a tone. And a tone generation unit 14 for generating a tone.
[0026]
In addition, in the present embodiment, for example, by operating the panel operation unit 115, an arbitrary point of the keyboard unit 114 is set as a split point, the left side is set as a chord specification area, the right side is set as a melody performance area, and key press information of the chord specification area is set. An automatic accompaniment unit 15 that performs automatic accompaniment may be provided in accordance with the above. The automatic accompaniment function of the automatic accompaniment unit 15 may perform automatic accompaniment based on the chord detected by the chord detection unit 11. The performance data of this automatic accompaniment is sent to the key & tone assigner 13 and is assigned to a tone generation channel.
[0027]
As described above, the tone color setting section 10 is constituted by the RAM 112 in which, when the player selects a tone color by the setting by the panel operation section 115 and the panel scan circuit 115a, the tone color setting is stored as a tone color parameter. ing.
[0028]
The chord detection unit 11 includes a CPU 111 and a ROM 113, and has a function of detecting a chord, that is, an additional sound, from key press information of the keyboard unit 114 scanned by the key scan circuit 114a. Specifically, when the ensemble performance mode is selected by the panel operation of the panel operation unit 115, the chord detection table (not shown) is used as the basic note with the note data of the melody part played by the keyboard set 114 by the set player. For example, a note three times above and four notes below the basic note are transmitted as additional sounds.
[0029]
The harmony adding section 12 is composed of the CPU 111, the RAM 112, and the ROM 113, and allocates note data (basic note data and additional sound data) corresponding to each preset harmony part from the detected code. And a function of setting the two-dimensional or three-dimensional sound image localization of each harmonic part according to the type of the tone color for which the parameter is set.
[0030]
More specifically, as shown in FIG. 4, the configuration of the harmony adding unit 12 includes an allocation setting unit 12a for allocating and setting note data input from the chord detection unit 11 to each harmony part. A tone-specific harmony data setting storage unit 12b storing tone image localization setting parameters for each harmony part based on the timbre parameters set by the setting unit 10, and a sound image from the tone color-specific harmony data setting storage unit 12b to each harmony part A localization setting parameter is read out, and based on the readout parameter, a two-dimensional or three-dimensional sound image localization is set for the note data allocated and set to each harmony part by the allocation setting unit 12a, and the sound image localization setting is output to the outside. A portion 12c.
[0031]
The key & tone assigner 13 is constituted by the CPU 111 and has almost the same function as a normal key assigner. As described above, each note data of each harmony part for which sound image localization is set is converted to a musical tone. When assigning to the predetermined channels of the generation circuit 117, the tone color data and velocity data to be read in each channel are also instructed to the tone generation circuit 117 as parameters.
[0032]
The tone generator 14 includes a tone generator 117 having the above-described waveform memory 117a, a DSP effect adding circuit 118, a D / A converter 119, and a sound system 120. The basic function of reading out note data corresponding to tone data for which parameters are set for each assigned tone generating channel and generating a tone is performed by a tone generating circuit 117 having a waveform memory 117a.
[0033]
In the configuration of the embodiment described above, when a person who wants to play with the electronic organ 100 turns on the power, the electronic circuit of the electronic organ 100 is initialized as shown in the main processing routine of FIG. (Step S101).
[0034]
Then, a panel scan is performed (step S102). Here, a state change of the panel switch is detected, and when a switch event, that is, a state change of the panel switch is detected, a process corresponding to each switch is performed.
[0035]
Then, a keyboard process is performed (step S103), and a change in the keyboard state is detected. If a keyboard event, that is, a change in the key state is detected, a well-known process such as key assignment or key-off is performed.
[0036]
If the automatic accompaniment mode has been set in the panel processing, automatic performance processing is performed next (step S104). That is, if there is performance information that is in an automatic performance state and has a sounding timing, sounding is controlled in the same manner as a keyboard event.
[0037]
Thereafter, the additional sound processing described later is performed (step S105), and the sound generation of the additional sound is controlled.
[0038]
Finally, a process of displaying the setting state of the tone color, the tempo, and the like on the display unit 116, a process of updating control parameters for effects such as vibrato and drum gate processing in each channel performed by the DSP effect adding circuit 118, and the like are performed ( Step S106).
[0039]
FIG. 6 is a flowchart showing a processing procedure of the additional sound processing performed in step S105 of FIG. First, the additional sound determination processing (step S201) by the chord detection unit 11 is performed, and then the sound image localization setting processing by the harmony addition unit 12 is performed (step S202).
[0040]
Here, the additional sound determination processing in step S201 is as described above, and the details are omitted.
[0041]
FIG. 7 is an explanatory diagram showing a setting state of the two-dimensional sound image localization in the harmony adding unit 12 when a trio (vocal) tone color is set by the panel operation unit 115. As described above, the chord detecting unit 11 outputs note data three times higher and four times lower than the basic note (key note) data. When these note data are input to the harmony adding section 12, the note setting section 12a assigns respective note data to each harmonic part.
[0042]
On the other hand, two-dimensional harmony data setting information is read out from the timbre-specific harmony data setting storage unit 12b based on the timbre parameters set in the timbre setting unit 10 by the panel operation of the panel operation unit 115, and the sound image localization setting unit 12c is read. Sent to Based on this, the sound image localization setting unit 12c performs sound image localization setting for each harmonic part as shown in FIG. That is, in the harmonic part to which the basic note data is assigned, the volume depths of the R side and the L side are respectively set to 70, and in the harmonic part to which the note data three times higher is assigned, the volume depth of the R side is 100. In the harmony part to which the L and L side volume depths are set to 40 and the note data four degrees below are assigned, the R side volume depth is set to 40 and the L side volume depth is set to 100. Each of these harmoniciparts can express the spread in the horizontal direction by performing the pan setting as described above. Therefore, each delay time is set to 0 ms.
[0043]
FIG. 8 shows the setting state of the three-dimensional sound image localization in the harmony adding unit 12 when the timbre setting of the chorus (vocal) in which the three persons are arranged in rows A, B, and C by the panel operation unit 115. FIG. As described above, the chord detecting unit 11 outputs note data three times higher and four times lower than the basic note (key note) data. When these note data are input to the harmony adding section 12, the note setting section 12a assigns respective note data to each harmonic part.
[0044]
On the other hand, three-dimensional harmony data setting information is read from the timbre-specific harmony data setting storage unit 12b based on the timbre parameters set in the timbre setting unit 10 by the panel operation of the panel operation unit 115, and the sound image localization setting unit 12c is read. Sent to Based on this, the sound image localization setting unit 12c performs sound image localization setting for each harmony part as shown in FIG. That is, in the harmonic part to which the basic note data is assigned, the volume depths of the R side and the L side are respectively set to 70, and in the harmonic part to which the note data three times higher is assigned, the volume depth of the R side is 100. In the harmony part to which the L and L side volume depths are set to 40 and the note data four degrees below are assigned, the R side volume depth is set to 40 and the L side volume depth is set to 100. Each of these harmoniciparts can express the spread in the horizontal direction by performing the above setting.
[0045]
On the other hand, in the depth direction of the rows A, B, and C, since each row has a distance, each sound image localization is delayed. Therefore, in the first column A, the delay time is set to 0 ms, but in the next column B, the delay time is set to 5 ms, and in the column C, the delay time is set to 10 ms. By doing so, the sound image localization in the depth direction can be set.
[0046]
FIG. 9 is a time chart showing the actually measured sound shift states in the rows A, B, and C when the three-dimensional sound image localization setting in FIG. 8 is performed. As shown in the figure, although the delay time of the row A is actually 0 ms in the actually sounded tone, there is actually a slight time lag, but in the rows B and C, the delay time is relative to the row A. Thus, it can be seen that the musical sound is output with a delay of the set delay time.
[0047]
According to the configuration of the present embodiment described above, the basic note data of the chord detected by the chord detection unit 11 is given to one harmonicipart by the harmony addition unit 12 for a predetermined number of harmony parts by default. Is assigned to it, and the remaining note data of the chord are assigned to different harmonic parts. Further, the two-dimensional or three-dimensional sound image localization of each harmony part is set by the harmony adding unit 12 based on the kind of timbre for which parameter setting is performed in the timbre setting unit 10 by panel setting. The key & tone assigner 13 assigns each note data of each harmony part to which the sound image localization is set to a tone generation channel, and the tone generation unit 14 sets a tone for each assigned tone generation channel. Each note data corresponding to the data is read, and a musical tone is generated. Therefore, in the electronic organ 100, when the ensemble performance mode is selected by the panel operation of the panel operation unit 115, the spatial expansion of the harmony is appropriately changed depending on the selected tone type (for example, the number of pianos is small, and the vocal is large). Etc.), and the ensemble performance can be easily enjoyed alone.
[0048]
Note that the electronic musical instrument of the present invention is not limited to the above-described embodiment, and it is needless to say that various changes can be made without departing from the scope of the present invention.
[0049]
【The invention's effect】
As described above, according to the electronic musical instrument according to the first to fourth aspects of the present invention, the spatial extent of the harmony can be appropriately changed depending on the type of the selected timbre. It is possible to achieve an excellent effect that it becomes possible to enjoy an ensemble performance.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an external configuration of an electronic organ 100 equipped with a performance control device configuration according to an embodiment of the present invention.
FIG. 2 is a basic circuit diagram of the electronic organ 100.
FIG. 3 is a block diagram showing functional blocks of the present invention.
FIG. 4 is a block diagram showing a functional block configuration of a harmony adding section 12 in the configuration of the present invention.
FIG. 5 is a flowchart showing a main flow of the electronic organ 100.
FIG. 6 is a flowchart showing a processing procedure of additional sound processing performed in step S105.
FIG. 7 is an explanatory diagram showing a setting state of a two-dimensional sound image localization in a harmony adding unit 12 when a timbre setting of a trio (vocal) is performed.
FIG. 8 is an explanatory diagram showing a setting state of a three-dimensional sound image localization in the harmony adding unit 12 when a timbre setting of a chorus (vocal) in which three persons are arranged in three rows.
FIG. 9 is a time chart showing a state of a sound shift in rows A, B and C actually measured when three-dimensional sound image localization is set.
[Explanation of symbols]
REFERENCE SIGNS LIST 10 tone color setting unit 11 chord detection unit 12 harmony addition unit 12 a assignment setting unit 12 b timbre-specific harmonic data setting storage unit 12 c sound image localization setting unit 13 key & tone assigner 14 tone generator 15 automatic accompaniment unit 100 electronic organ 110 system bus 111 CPU
112 RAM
113 ROM
114 keyboard part 114a key scan circuit 115 panel operation part 115a panel scan circuit 116 display part 116a display control circuit 117 musical sound generation circuit 117a waveform memory 118 DSP effect adding circuit 119 D / A conversion circuit 120 sound system

Claims (4)

Code detection means for detecting a code from key press information;
Harmony adding means for allocating preset note data corresponding to each harmonic part from the detected chord, and setting a two-dimensional or three-dimensional sound image localization of each harmonic part according to the type of the set timbre. ,
Allocating means for allocating each note data of each of the harmoniciparts for which the sound image localization is set to a musical tone generation channel,
An electronic musical instrument comprising: a tone generating means for reading out note data corresponding to tone color data for which parameters are set for each assigned tone generating channel and generating a tone. Code detection means for detecting a code from key press information;
Automatic accompaniment means for executing automatic accompaniment based on key press information;
Harmony adding means for allocating preset note data corresponding to each harmonic part from the detected chord, and setting a two-dimensional or three-dimensional sound image localization of each harmonic part according to the type of the set timbre. ,
Allocating means for allocating each note data of each of the harmoniciparts for which the sound image localization is set to a tone generation channel, and allocating the same tone generation channel by performing automatic accompaniment,
An electronic musical instrument comprising: a tone generating means for reading out note data corresponding to tone color data for which parameters are set for each assigned tone generating channel and generating a tone. 3. The electronic musical instrument according to claim 1, wherein, when the two-dimensional sound image localization is set by the harmony adding means, the volume of each part in the plane direction is set to an arbitrary state. 2. The method according to claim 1, wherein when the three-dimensional sound image localization is set by the harmony adding means, the volume of each part in the plane direction is set to an arbitrary state, and a difference is provided in the delay setting in the depth direction. Or the electronic musical instrument according to claim 2.

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