JP4373625B2 - Electronic musical instruments - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic musical instrument including a keyboard in which white keys and black keys are arranged, and a musical sound generation unit that generates musical sounds according to the performance operation of the keyboard.
[0002]
[Prior art]
Conventionally, note numbers are set corresponding to rhythm patterns and sound effect patterns, and patterns corresponding to the specified note numbers are read out to the musical sound generating means, so that rhythm patterns and sound effects are played in real time during performance. A technique of RPS (Realtime Phase Sequence) that freely changes the pattern is known (see Japanese Patent No. 2629433). By adopting this technology, each pattern is assigned to each key within a part of the key range of the keyboard (for example, within a key range of one octave), and the key corresponding to the desired pattern is pressed. Rhythm and sound effects are added to the musical sound to be played. Here, when a basic rhythm pattern is assigned to the white key and a sound effect pattern such as fill-in is assigned to the black key, the rhythm pattern and the sound effect pattern can be easily distinguished visually. Therefore, performance can be performed easily.
[0003]
[Problems to be solved by the invention]
Here, when playing a musical tone on the keyboard, depending on the music played, there may be a performance using only the high-frequency side keys of the keyboard, or only using the low-frequency side keys. . In this case, a pattern assigned in advance to a predetermined key range is moved to the low tone range side of the keyboard or moved to the high tone range side. There is no problem if such movement is performed in octaves, but if movement is performed in semitones, the rhythm pattern assigned to the white key before the movement and the effect assigned to the black key are moved. The positional relationship with the sound pattern may be lost. Then, a sound effect pattern is assigned to the white key, and a rhythm pattern is assigned to the black key, making it difficult to visually distinguish the rhythm pattern from the sound effect pattern, which makes it difficult to play. appear.
[0004]
In view of the above circumstances, an object of the present invention is to provide an electronic musical instrument that can be easily played.
[0005]
[Means for Solving the Problems]
An electronic musical instrument of the present invention that achieves the above object is an electronic musical instrument comprising a keyboard in which white keys and black keys are arranged, and a musical sound generating unit that generates musical sounds according to a performance operation of the keyboard.
A function assigning unit that assigns each function to each key in a part of the key range of the keyboard;
A function execution unit that executes a function assigned to a key operated in response to an operation of each key in the key range;
A key range movement designating unit for designating the amount of movement of the key range to a new key range in semitone units;
The function allocating unit specifies the key area movement designation from the key area before the movement to the key area to which each function is assigned when the movement amount to the new key area is designated by the key area movement designation unit. The function that was assigned to the white key in the previous key range is also assigned to the white key in the new key range and moved to the new key range that has been moved according to the movement amount specified in the section. The function assigned to the black key in the previous key range moves so as to be assigned to the black key also in the new key range.
[0006]
In the electronic musical instrument of the present invention, when a key is moved from a key range to which a function is assigned in advance to a new key range, the function assigned to the white key in the key range before the movement is changed in the new key range. Is assigned to the white key, and the function assigned to the black key in the previous key range moves so that it is also assigned to the black key in the new key range. Even if it exists, it is prevented that the function assigned to the white key is assigned to the black key or the function assigned to the black key is assigned to the white key. Therefore, in the performance, it is possible to easily distinguish the function assigned to the white key and the function assigned to the black key.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described.
[0008]
FIG. 1 is a block diagram of an embodiment of an electronic musical instrument of the present invention.
[0009]
In the electronic musical instrument 100 shown in FIG. 1, a ROM 11, a RAM 12, a CPU 13, a mode selection operator 14, a transpose setting operator 15, a pattern shift setting operator 16, a white key and a black key are arranged. A keyboard device 17, a musical sound reproducing device 18, a pattern reproducing device 19, a D / A converter 20, and a speaker 21, which constitute a musical sound generating unit that generates musical sounds according to a performance operation of the keyboard device 17, are provided. Yes.
[0010]
The ROM 11 stores a program for controlling the entire electronic musical instrument 100.
[0011]
The RAM 12 includes a work area for the CPU 13 to execute various processes.
[0012]
The CPU 13 controls the entire electronic musical instrument 100 shown in FIG. 1 by reading the program stored in the ROM 11 and using the work area provided in the RAM 12 and executing the read program.
[0013]
Further, the CPU 13 plays a role of a function assigning unit that assigns each function to each key in a part of the key range of the keyboard device 17. Furthermore, the CPU 13 plays a role of a function execution unit that executes a function assigned to the key operated in accordance with the operation of each key in the key range. The function here refers to a function for adding a rhythm or a sound effect to a musical sound played on the keyboard device 17, and a basic rhythm pattern is assigned to the white key in the above-mentioned key range of the keyboard device 17. Black keys are assigned sound effect patterns such as fill-in.
[0014]
The mode selection operator 14 is an operator for selecting one of the tone mode and the pattern mode. The musical tone mode is a mode for generating a normal musical tone played in response to a key operation of the keyboard device 17 by a musical tone reproducing device 18 described later. On the other hand, the pattern mode is a mode in which the pattern playback device 19 generates a rhythm pattern assigned to the white key in the above-mentioned key range of the keyboard device 17 and a sound effect pattern assigned to the black key. When the player selects the mode selection operator 14 in the musical tone mode, the value “1” is output from the mode selection operator 14 to the CPU 11. When the pattern mode is selected, the value “2” is output to the CPU 11. Is output.
[0015]
The transpose setting operator 15 is an operator for designating how much (transpose value) the note number corresponding to the operated key is to be moved when generating a normal musical tone. The performer can specify a transpose value within a range of −12 to +12 by operating the transpose setting operator 15. The designated transpose value is output to the CPU 13.
[0016]
The pattern shift setting operator 16 corresponds to an example of a key range movement designation unit according to the present invention, and a new key range is selected from the key range of the keyboard device 17 to which the rhythm pattern or sound effect pattern is previously assigned. This specifies the amount of movement of the above pattern. The performer can operate the pattern shift setting operator 16 to designate a pattern shift value within a range of −24 to +24. The designated pattern shift value is output to the CPU 13. When the pattern shift value is “0”, note numbers 60 to 71 in the key range for one octave at the center of the keyboard device 17 are the pattern performance key range.
[0017]
Here, when the movement amount (pattern shift value) to a new key range is designated by the pattern shift setting operator 16, the CPU 13 moves the key range to which the rhythm pattern and sound effect pattern are assigned before moving. The rhythm pattern assigned to the white key in the key range before the movement is moved to the new key range moved by the movement amount corresponding to the movement amount designated by the pattern shift setting operator 16 from the key range of the new key range. The sound effect pattern assigned to the black key in the key range before movement is moved so as to be assigned to the black key also in the new key range.
[0018]
The keyboard device 17 will be described with reference to FIG.
[0019]
FIG. 2 shows a part of the keyboard apparatus shown in FIG.
[0020]
The keyboard device 17 of this embodiment is provided with 128 keys corresponding to note numbers from 0 to 127, and FIG. 2 shows a part of the keys (keys corresponding to 4 octaves). Has been. The key range for one octave is composed of seven white keys 17_0, 17_2, 17_4, 17_5, 17_7, 17_9, 17_11 and five black keys 17_1, 17_3, 17_6, 17_8, 17_10. The keyboard device 17 outputs key press information and key release information with a note number corresponding to the key operated by the performer to the CPU 13.
[0021]
Returning to FIG. 1 again, the description will be continued. When the musical sound reproducing apparatus 18 constituting the electronic musical instrument 100 receives a musical sound reproduction start instruction with a note number of 0 to 127 from the CPU 13, it outputs a digital musical sound signal having a pitch corresponding to the note number. When receiving a musical sound reproduction stop instruction from the CPU 13, the output of the musical sound signal is stopped.
[0022]
When receiving a pattern reproduction start instruction with a pattern number of 11 to 17 or 21 to 25, which will be described later, from the CPU 13, the pattern reproduction device 19 outputs a digital musical tone signal having a pattern corresponding to the pattern number. When receiving a pattern reproduction stop instruction from the CPU 13, the output of the tone signal is stopped.
[0023]
The D / A converter 20 converts the digital musical sound signal output from the musical sound reproducing device 18 and the pattern reproducing device 19 into an analog signal, and outputs the sound through the speaker 21.
[0024]
FIG. 3 is a diagram for explaining variables used in the electronic musical instrument shown in FIG.
[0025]
Variables CurMode, CurTranspose, and CurPatternShift shown in FIG. 3 are all stored in the RAM 12.
[0026]
The variable CurMode is for holding the number of the mode currently selected by the mode selection operator 14. In the case of the musical tone mode, the value “1” is substituted for the variable CurMode, and in the case of the pattern mode, the value “ 2 "is substituted.
[0027]
The variable CurTranspose is for holding the transpose value currently set by the transpose setting operator 15, and the possible values are from −12 to +12 as described above. The initial value is set to “0”.
[0028]
The variable CurPatternShift is for holding the pattern shift value currently set by the pattern shift setting operator 16, and the possible values are from −24 to +24 as described above. The initial value is set to “0”.
[0029]
FIG. 4 is a diagram showing the correspondence between note numbers and keys.
[0030]
The keyboard device 17 is provided with keys having 128 keys corresponding to note numbers of 0 to 127. FIG. 4 shows note numbers 0, 1, 2 for one octave on the left end side of the keyboard device 17. ,..., And keys C, C #, D,... Corresponding to note numbers 60, 61, 62,. Yes.
[0031]
FIG. 5 shows a pattern table, white key table, and black key table for one octave.
[0032]
Indexes 0 to 11 constituting the pattern table 51 shown in FIG. 5 indicate a key range for one octave, and are represented by a remainder obtained by dividing a note number of 0 to 127 by 12. By doing in this way, even if it is the key in the area | region for any octave, it can represent with this index 0-11. For example, the indexes 0 to 11 are the white key 17_0, the black key 17_1, the white key 17_2, the black key 17_3, the white key 17_4, 17_5, the black key 17_6 and the white key in order from the left in the keyboard device 17 shown in FIG. 17_7, black key 17_8, white key 17_9, black key 17_10, and white key 17_11. Here, the indexes 0, 2, 4, 5, 7, 9, and 11 corresponding to seven white keys (de, les, mi, fa, so, la, and shi) have rhythms 1, 2, 3, and 4, respectively. , 5, 6, and 7 are associated with pattern numbers 11, 12, 13, 14, 15, 16, and 17, while indexes 1, 3, 6, 8, and 10 corresponding to the five black keys are associated. Are associated with pattern numbers 21, 22, 23, 24, and 25 representing sound effects 1, 2, 3, 4, and 5, respectively.
[0033]
Also, as a result of the above-described pattern shift setting process, when seven white keys in a key range of one octave are shifted, white keys to be assigned according to respective indexes (note numbers) of the seven white keys A table 52 and a black key table 53 for assigning according to an index (note number) of each of the five black keys when the five black keys are shifted are shown.
[0034]
FIG. 6 is a diagram showing each table in each pattern shift value set in the pattern shift setting operator shown in FIG.
[0035]
A table 61 illustrated in FIG. 6 is a table when the pattern shift value is “0” (when the variable CurPatternShift is “0”). In this case, as described above, note numbers 60 (C) to 71 (B) are pattern performance key ranges. Specifically, seven white keys corresponding to seven note numbers 60 (C), 62 (D), 64 (E), 65 (F), 67 (G), 69 (A), 71 (B) 7 pattern numbers 11 (rhythm 1), 12 (rhythm 2), 13 (rhythm 3), 14 (rhythm 4), 15 (rhythm 5), 16 (rhythm 6), 17 (rhythm 7) are assigned. Yes. Also, five pattern numbers 21 (5) are assigned to five black keys corresponding to five note numbers 61 (C #), 63 (D #), 66 (F #), 68 (G #), and 70 (A #). Sound effects 1), 22 (sound effect 2), 23 (sound effect 3), 24 (sound effect 4), and 25 (sound effect 5) are assigned.
[0036]
Here, the pattern shift setting operator 16 is operated to set the variable CurPatternShift to +1 (high sound range side). Then, the table 61 is shifted to the table 62. In the table 62, note numbers 61 (C #) to 72 (C) are pattern performance key ranges. That is, seven white keys corresponding to seven note numbers 62 (D), 64 (E), 65 (F), 67 (G), 69 (A), 71 (B), 72 (C) Two pattern numbers 11 (rhythm 1), 12 (rhythm 2), 13 (rhythm 3), 14 (rhythm 4), 15 (rhythm 5), 16 (rhythm 6), and 17 (rhythm 7) are assigned. The five black keys corresponding to the five note numbers 61 (C #), 63 (D #), 66 (F #), 68 (G #), and 70 (A #) have the same pattern as the table 61. Numbers 21 (effect sound 1), 22 (effect sound 2), 23 (effect sound 3), 24 (effect sound 4), and 25 (effect sound 5) are assigned as they are.
[0037]
Further, the pattern shift setting operator 16 is operated to set the variable CurPatternShift to +2 (further high frequency range side). Then, the table 62 is shifted to the table 63. In the table 63, note numbers 62 (D) to 73 (C #) are pattern performance key ranges. That is, seven white keys corresponding to seven note numbers 62 (D), 64 (E), 65 (F), 67 (G), 69 (A), 71 (B), 72 (C) Numbers 11 (rhythm 1), 12 (rhythm 2), 13 (rhythm 3), 14 (rhythm 4), 15 (rhythm 5), 16 (rhythm 6), and 17 (rhythm 7) are assigned as they are. The five note numbers 63 (D #), 66 (F #), 68 (G #), 70 (A #), and 73 (C #) have pattern numbers 21 (effects) corresponding to the five black keys. Sounds 1), 22 (effect sound 2), 23 (effect sound 3), 24 (effect sound 4), and 25 (effect sound 5) are assigned.
[0038]
As described above, in this embodiment, when moving from a pre-assigned key range to a new key range, the rhythm pattern assigned to the white key in the key range before the movement is also white in the new key range. The sound effect pattern assigned to the black key in the key range before the movement is moved so as to be assigned to the black key also in the new key range. This prevents the rhythm pattern assigned to the white key from being assigned to the black key or the sound effect pattern assigned to the black key from being assigned to the white key. Therefore, it is possible to easily distinguish the rhythm pattern and the sound effect pattern when performing.
[0039]
FIG. 7 is a flowchart of a routine that is started when key depression information is input from the keyboard device to the CPU of the electronic musical instrument shown in FIG.
[0040]
First, in step S1, it is determined whether the pattern mode or the musical tone mode. That is, when the value of the variable CurMode is “2”, it is determined that the pattern mode is selected, and when the value of the variable CurMode is “1”, it is determined that the tone mode is selected. If it is determined that the pattern mode is selected, the process proceeds to step S2, and if it is determined that the tone mode is selected, the process proceeds to step S9. In step S2, it is determined whether or not it is a pattern key area. Here, it is determined whether or not the note number is equal to or greater than the value of the variable CurPatternShift + 60 and less than the value of the variable CurPatternShift + 72. When it is determined that it is the pattern key area, the process proceeds to step S3, and when it is determined that it is not the pattern key area, the process proceeds to step S9.
[0041]
In step S3, the pattern number is obtained from the note number. Specifically, a value (pattern number) corresponding to the remainder (index of the pattern table 51 shown in FIG. 5) obtained by dividing the current note number by 12 is obtained. Next, the process proceeds to step S4.
[0042]
In step S4, it is determined whether or not the key is a white key. In this determination, if the pattern number obtained in step S3 is less than 20, it is determined to be a white key and the process proceeds to step S5. If it is 20 or more, it is determined to be a black key and the process proceeds to step S7.
[0043]
In step S5, the pattern number is corrected with the pattern shift value. Specifically, the white key table 52 shown in FIG. 5 described above is referred to by the remainder (index) obtained by dividing the value of the variable CurPatterShift + 60 by 12, and the referenced value is subtracted from the pattern number. If the subtraction result is less than “11”, “7” is added. In step S6, a pattern reproduction start instruction with the obtained pattern number is output to the pattern reproduction device 19, and this routine is terminated.
[0044]
On the other hand, if it is determined in step S4 that the key is a black key and the process proceeds to step S7, the pattern number is corrected by the pattern shift value in step S7. That is, with reference to the black key table 53 shown in FIG. 5 described above with the remainder obtained by dividing the value of the variable CurPattern Shift +60 by 12, the value referred to is subtracted from the pattern number. If the subtraction result is less than “21”, “5” is added. In step S8, a pattern reproduction start instruction with the obtained pattern number is output to the pattern reproduction device 19, and this routine is terminated.
[0045]
If it is determined in step S1 that the musical tone mode is selected and the process proceeds to step S9, or if it is determined in step S2 that it is not a pattern area and the process proceeds to step S9, the note number is converted into a transpose value in step S9. to correct. Specifically, the value of the variable CurTranspose is added to the note number. In step S10, a tone reproduction start instruction with the corrected note number is output to the tone reproduction apparatus 18, and this routine is terminated.
[0046]
FIG. 8 is a flowchart of a routine that is started when key release information is input from the keyboard device to the CPU of the electronic musical instrument shown in FIG.
[0047]
First, in step S21, it is determined whether the pattern mode or the musical tone mode. When the value of the variable CurMode is “2”, it is determined that the mode is the pattern mode, and when the value of the variable CurMode is “1”, it is determined that the mode is the musical tone mode. If it is determined that the pattern mode is selected, the process proceeds to step S22. If it is determined that the musical tone mode is selected, the process proceeds to step S24. In step S22, whether or not it is the pattern key range is determined by whether or not the note number is equal to or greater than the value of the variable CurPatternShift + 60 and less than the value of the variable CurPatternShift + 72. When it is determined that it is the pattern key area, the process proceeds to step S23, and when it is determined that it is not the pattern key area, the process proceeds to step S24.
[0048]
In step S23, a pattern reproduction stop instruction is output to the pattern reproduction device 19, and this routine is terminated.
[0049]
On the other hand, if it is determined in step S21 that the musical tone mode is selected, or if it is determined that it is not a pattern area in step S22 and the process proceeds to step S24, a musical sound reproduction stop instruction is output to the musical sound reproducing device 18 in step S24. End the routine.
[0050]
【The invention's effect】
As described above, according to the electronic musical instrument of the present invention, performance can be easily performed.
[Brief description of the drawings]
FIG. 1 is a block diagram of an embodiment of an electronic musical instrument of the present invention.
FIG. 2 is a diagram showing a part of the keyboard device shown in FIG. 1;
FIG. 3 is a diagram for explaining variables used in the electronic musical instrument shown in FIG. 1;
FIG. 4 is a diagram illustrating a correspondence relationship between a note number and a key.
FIG. 5 is a diagram showing a pattern table, a white key table, and a black key table for one octave.
6 is a diagram showing each table in each pattern shift value set in the pattern shift setting operator shown in FIG. 1. FIG.
7 is a flowchart of a routine that is activated when key depression information is input from the keyboard device to the CPU of the electronic musical instrument shown in FIG. 1;
FIG. 8 is a flowchart of a routine that is activated when key release information is input from the keyboard device to the CPU of the electronic musical instrument shown in FIG. 1;
[Explanation of symbols]
11 ROM
12 RAM
13 CPU
14 mode selection operator 15 transpose setting operator 16 pattern shift setting operator 17 keyboard device 17_0, 17_2, 17_4, 17_5, 17_7, 17_9, 17_11 white key 17_1, 17_3, 17_6, 17_8, 17_10 black key 18 musical sound reproducing device 19 Pattern playback device 20 D / A converter 21 Speaker 100 Electronic musical instrument

Claims (1)

In an electronic musical instrument comprising a keyboard in which white keys and black keys are arranged, and a musical sound generator that generates musical sounds according to the performance operation of the keyboard,
A function assigning unit that assigns each function to each key in a part of the key range of the keyboard;
A function execution unit that executes a function assigned to a key operated in response to an operation of each key in the key range;
A key range movement designating unit for designating the amount of movement of the key range to a new key range in semitone units;
The function allocating unit specifies the key area movement designation from the key area before the movement to the key area to which each function is assigned when the movement amount to the new key area is designated by the key area movement designation unit. The function assigned to the white key in the new key range is also assigned to the white key in the new key range and moved to the new key range that has been moved according to the movement amount specified in the section. An electronic musical instrument characterized in that the function assigned to the black key in the previous key range moves so as to be assigned to the black key also in the new key range.

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