JP3426379B2 - Electronic musical instrument - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic musical instrument which stores musical tone information and generates a musical tone based on the musical tone information.

[0002]

2. Description of the Related Art Conventionally, there has been proposed a technique for storing musical tone information and generating a musical tone based on the stored musical tone information. In this technology, for example, corresponding musical tone information defining one musical tone such as an instrument number (name), pitch, decay, level, etc. is defined corresponding to each note number, and the musical tone information includes a plurality of note numbers. There is a case where a musical tone information table called a so-called kit, which is arranged in a plurality corresponding to the above, is used. In an electronic musical instrument using this musical tone information table, a plurality of musical tone information tables are stored in order to correspond to a plurality of musical styles, and the performer selects and uses one of these musical tone information tables. To do. When the musical tone information table is related to rhythm sounds, the musical tone information of the drum sound is stored in a part of the plurality of musical tone information tables, and the musical tone information of the percussion sound is stored in the other part. Here, regarding the tone information table for rhythm sounds,
In many cases, the percussion sounds are common even if the drum sounds are different, so that the musical sound information of the percussion sounds is often the same across a plurality of musical sound information tables.
Even if the percussion sounds are common in this way, since a part of the musical tone information table stores information specific to the musical tone information table, it is necessary to separately prepare a plurality of musical tone information tables.

[0003]

When it is desired to change only a part of the musical tone information in the musical tone information table, it is necessary to rewrite a portion of the musical tone information or select a new musical tone information table. is there. If a part of the musical tone information in a certain musical tone information table is rewritten, the original musical tone information recorded up to that point will be lost. Rewriting is also very troublesome. Furthermore, for example, in a musical tone information table regarding rhythm sounds, even if the musical tone information of a percussion tone in a certain musical tone information table is rewritten to obtain a desired percussion tone, the performer tries to change only the drum tone to obtain the desired drum tone. When another compatible tone information table is selected, the tone information of the percussion tone in that tone information table is not rewritten, so the desired percussion tone cannot be obtained, and rewriting is required to obtain that percussion tone. It is complicated.

In order to solve this problem, a plurality of musical tone information tables are divided into two sets, for example, a musical tone information table for drum sounds and a musical tone information table for percussion sounds, and each desired musical tone is generated from each of these sets. It is conceivable to select an information table and combine the two selected musical sound information tables to generate a musical sound. However, even in this case, the same problem as described above occurs when the musical tone information to be changed is a part of the drum sound, or when the part of the drum sound and the part of the percussion sound are straddled. Become. That is, if you rewrite part of the percussion sound, the information before rewriting will be lost,
Further, if another musical tone information table for percussion tone is selected, it is necessary to rewrite the musical tone information table again, which may complicate the handling. Therefore, even if the genre of the musical tone information table such as the musical tone information table of the drum sound and the musical tone information table of the percussion sound is fixedly determined in advance, it is not a fundamental solution to the problem.

In view of the above-mentioned circumstances, the present invention changes the tone information of an arbitrary subset of the tone information set forming the tone information table without losing the information before the change.
It is an object of the present invention to provide an electronic musical instrument that can be added and can reflect the change / addition made once even in the case of switching the musical tone information table in the switched musical tone information table.

[0006]

The electronic musical instrument of the present invention for achieving the above object stores a tone information table in which a plurality of tone information defining one tone is arranged, and the tone information table is stored. In an electronic musical instrument that generates a musical tone based on the musical tone information extracted from (1) a first storage means (2) for storing a plurality of first musical tone information tables in which a plurality of musical tone information are arranged, Second storage means for storing a plurality of second tone information tables arranged in plurality (3) One of the plurality of first tone information tables stored in the first storage means Musical sound table selecting means (4) for selecting a musical sound information table and for selecting one second musical sound information table from the plurality of second musical sound information tables stored in the second storage means. First selected by the cable selection means
Extract desired tone information from the tone information table of
If the desired musical tone information does not exist in the first musical tone information table, the musical tone information extracting means for extracting the desired musical tone information from the second musical tone information table selected by the musical tone table selecting means is provided. It is characterized by that.

[0007]

In the electronic musical instrument of the present invention, the first musical tone information table and the second musical tone information table are prepared. First, desired musical tone information is extracted from the first musical tone information table, and the first musical tone information table is extracted. When the desired musical tone information does not exist in the musical tone information table, the desired musical tone information is extracted from the second musical tone information table to generate the musical tone. Record information, first
By writing the musical tone information to be changed into the musical tone information table of No. 2, it is possible to change the musical tone information without erasing the original musical tone information (the musical tone information recorded in the second musical tone information table). Further, by writing the musical tone information whose musical tone information does not exist in the second musical tone information table into the first musical tone information table, it becomes possible to add the musical tone information.

Even if the second tone information table is switched, the tone information recorded in the first tone information table remains valid. That is, the musical tone information once changed / added can be reflected as it is on the other second musical tone information tables. Further, in the present invention, since a plurality of the first tone information tables as described above are prepared, even if the portion to be changed differs depending on the case, the change / addition corresponding to that case can be made for each first tone. By writing in the information table, it is possible to change or add the musical tone information in each case simply by selecting the desired first musical tone information table according to the case from the plurality of first musical tone information tables. can do.

Further, if the number of musical tone information per one first musical tone information table is smaller than the number of musical tone information per one second musical tone information table, the memory capacity is saved as described in an embodiment to be described later. To be done. Furthermore, if the user can freely set the contents of the first musical tone information table, the user can change and add as desired, which is easy to use.

[0010]

EXAMPLES Examples of the present invention will be described below. FIG. 1 is a block diagram showing a circuit configuration of an electronic musical instrument according to an embodiment of the present invention. The electronic musical instrument includes an operation panel 11 provided with operators for setting musical tone information,
A MIDI signal input terminal 12 for inputting a MIDI signal from an externally connected keyboard (not shown), a musical tone generating section 13 for generating musical tones based on musical tone information, and a display section 14 for displaying the setting state of musical tone information. A CPU 15 that performs a process corresponding to an operation of an operator provided on the operation panel 11 and a process that controls the musical tone generating unit 13 to generate a musical tone; a ROM 16 that stores a program such as a musical tone generating process;
Readable and writable RAM that stores music information
17 and a bus 18 for exchanging data between them.

In this embodiment, two kinds of kit formats are prepared as the tone information table in which tone information is stored. Here, of the two types of kit formats, the first kit format (a plurality of first tone information tables according to the present invention) is defined as a foreground kit.
t), a second kit format (a plurality of second musical tone information tables referred to in the present invention) is used as a background kit (back).
It is called a ground kit). Multiple foreground kits and background kits are provided. The performer selects and uses one of a plurality of foreground kits and one of a plurality of background kits.

Generally, the foreground kit stores different tone information for each music style, while the background kit stores tone information common to a plurality of music styles. When trying to pronounce according to the performance information, first search for whether the musical tone information corresponding to the performance information exists in the foreground kit, and refer to it if the musical tone information corresponding to the performance information exists. To pronounce. When there is no musical tone information corresponding to the performance information in the foreground kit, the musical tone information in the background kit is referred to and sound is generated.

FIG. 2 is a diagram showing an example of the foreground kit. The foreground kit shown in Figure 2 is
It is a musical tone information table in which a plurality of musical tone information are arranged. In this musical tone information table, element numbers 1 to 32 indicating the order of arrangement of musical tone information related to each other, note numbers, and musical tone information necessary for the tone generation processing, that is, instrument number (name), Pitch, decay,
The levels and are shown. 32 such foreground kits are provided, each with a foreground kit number, and stored in the memory as a musical tone information group.

FIG. 3 is a diagram showing an example of the background kit. The background kit shown in FIG. 3 is also a musical tone information table in which a plurality of musical tone information are arranged.
Element numbers from 1 to 128 are shown in this tone information table. Also, in this background kit, note numbers and musical tone information corresponding to the note numbers are recorded as in the foreground kit shown in FIG. Four such background kits are provided, each of which is assigned a background kit number and stored in the memory as a musical tone information group.

The note number recorded in the foreground kit is the same note number as the note number recorded in the background kit for the purpose of changing the tone information recorded in the background kit. For the purpose of adding other musical tone information to the recorded musical tone information, the note number is different from the note number recorded in the background kit. Therefore, the note numbers recorded in the foreground kit will be overlapped with any of the note numbers recorded in the background kit in the case of change only, and all the note numbers will be in the background in the case of addition only. It is different from any of the note numbers recorded in the kit, and if the changes and additions are mixed, only some of the note numbers overlap with the note numbers recorded in the background kit. As described above, there are various modes of overlapping the foreground kit and the background kit depending on the purpose.

Note that the note numbers in FIGS. 2 and 3 do not seem to match the number of element numbers at first glance, but the note numbers are not arranged in order due to the nature of these tables. FIG. 4 is a diagram showing a register group in the RAM 17 shown in FIG. Register FGKit shown in FIG.
Num, register BGKitNum, operation panel 1
Foreground kit number set by the controller 1
Each background kit number is stored. The register NoteNum stores the note number extracted from the MIDI receiving buffer (not shown).

FIG. 5 shows the processing of the foreground kit,
It is a flow chart of a main routine including processing of a background kit. When the electronic musical instrument is powered on, an initialization routine is first executed in step S101 to clear the MIDI reception buffer. Next, in step S102, a tone generation processing routine is executed in which the foreground kit and the background kit are searched for based on the note number of the MIDI signal and sounded. Further, in step S103, a routine for setting the foreground kit number and background kit number and other processing is executed. The routines of these steps S101, S102 and S103 are repeatedly and sequentially executed.

FIG. 6 is a flowchart of the tone generation processing routine shown in FIG. When the routine shown in FIG. 6 is started, first, in step S111, the MIDI receive buffer is searched to determine whether or not there is a MIDI note-on message. When it is determined that the MIDI note-on message is present in the MIDI receiving buffer, the process proceeds to step S112 to process the pronunciation. On the other hand, if it is determined that there is no MIDI note-on message in the MIDI reception buffer, it is not necessary to process the sound generation, and the process ends without doing anything.

In step S112, the register Not
The note number of the note-on message is stored in eNum. In step S113, the next MIDI input
In preparation for the note-on message, the note-on message is deleted from the MIDI reception buffer. Next step S1
In step 14, it is determined whether or not the same note number as the note number stored in the register NoteNum exists in the tone information table of the foreground kit corresponding to the number stored in the register FGKitNum.
If the same note number as the note number stored in the register NoteNum exists, the process proceeds to step S116. In step S116, the tone generation unit 13 is controlled by referring to the instrument number, pitch, decay, and level corresponding to the note number in the tone information table of the foreground kit to generate a tone.

On the other hand, if the same note number as the note number stored in the register NoteNum does not exist in the tone information table of the foreground kit,
It proceeds to step S115. In step S115,
It is determined whether or not the same note number as the note number stored in the register NoteNum exists in the tone information table of the background kit corresponding to the number stored in the register BGKitNum. Register NoteN in the tone information table of the background kit
If the same note number as the note number stored in um exists, the process proceeds to step S116. Step S116
In the tone information table of the background kit, the instrument number corresponding to the note number,
The tone generation unit 13 is controlled by referring to the pitch, decay, and level to generate a tone.

On the other hand, if there is no note number same as the note number stored in the register NoteNum in the tone information table of the background kit, nothing is done and the process ends. Next, in this embodiment, the memory capacity required for recording the foreground kit and the background kit will be considered.

Generally, the number of foreground kits is L
The number of musical tone information arrays is M, the number of background kits is I, the number of musical tone information arrays is J, and the memory capacity for storing musical tone information arranged in one row is Assuming X bytes, ((L × M) + (I × J)) ×
A memory capacity of X bytes is required. Here, assuming that the memory capacity for storing the tone information arranged in one column is 32 bytes, in the present embodiment, the number of tone information arrays per foreground kit is 32, and the number of foreground kits is 32. And background kit 1
If the number of musical tone information arrays per one is 128 and the number of background kits is 4, ((32 foreground kit x 32 arrays) + (4 background kit x 128 arrays)) x 32 bytes = 49152 bytes It becomes the memory capacity, and musical tone information of a combination of 32 foreground kits × 4 background kits = 128 patterns can be obtained. On the other hand, when trying to obtain the number of 128 patterns by the conventional method (the arrangement of the musical tone information per kit is 128), 128 kits × 128 arrangements × 32 bytes = 524288 bytes are required. The memory capacity of this embodiment is about 1/10 of the memory capacity of the conventional example. By thus combining the two types of kit formats, it is possible to save the memory capacity for storing the musical tone information.

FIG. 7 is a flowchart of an interrupt routine for processing an operator. By this routine, the foreground kit number and the background kit number are set. The routine shown in FIG.
It is activated by an interrupt generated by the operation of the operator provided in 1. When this routine is activated, first, in step S121, it is determined whether or not the operator for setting the foreground kit number has been operated. If it is determined that the operator for setting the foreground kit number has been operated, the process proceeds to step 122. In step S122, the foreground kit number set by the operator for setting the foreground kit number is the register FGKitN.
stored in um, and the process proceeds to step S123. On the other hand, when it is determined in step S121 that the operator for setting the foreground kit number is not operated, the process directly proceeds to step S123.

In step 123, it is determined whether or not the operator for setting the background kit number has been operated. If it is determined that the control for setting the background kit number has been operated,
Go to step 124. In step S124, the background kit number set by the operator for setting the background kit number is the register BGK.
Stored in itNum and finished. On the other hand, step S12
When it is determined in 3 that the operator for setting the background kit number is not operated,
It ends as it is.

When the operator of the operation panel 11 is operated in this manner, the foreground kit number and the background kit number are set.

[0026]

As described above, in the electronic musical instrument of the present invention, the desired musical tone information is extracted from the second musical tone information table only when the desired musical tone information does not exist in the first musical tone information table. That is, since the changed / added musical tone information is preferentially processed to generate a musical tone, the original musical tone information recorded in the second musical tone information table is prevented from being lost. Moreover, even if the second musical tone information table is switched, the musical tone information once changed and added can be reflected in the performance using the newly selected second musical tone information table. Furthermore, it is possible to save the memory capacity for storing a plurality of tone information tables.

[Brief description of drawings]

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

FIG. 2 is a diagram showing an example of a foreground kit.

FIG. 3 is a diagram showing an example of a background kit.

FIG. 4 is a diagram showing a register group in the RAM shown in FIG.

FIG. 5 is a flowchart of a main routine including a foreground kit process and a background kit process.

6 is a flowchart of a sound generation processing routine shown in FIG.

FIG. 7 is a flowchart of an interrupt routine for processing an operator.

[Explanation of symbols]

11 Operation panel 12 MIDI signal input terminal 13 Musical sound generator 14 Display 15 CPU 16 ROM 17 RAM

Claims (2)

(57) [Claims] 1. An electronic musical instrument which stores a musical tone information table in which a plurality of musical tone information defining one musical tone is arranged, and generates a musical tone based on the musical tone information extracted from the musical tone information table. First storage means for storing a plurality of first tone information tables in which a plurality of pieces of information are arranged, and second storage means for storing a plurality of second tone information tables in which a plurality of pieces of tone information are arranged , A plurality of second musical tones stored in the second storage unit while selecting one first musical tone information table from the plurality of first musical tone information tables stored in the first storage unit. Musical sound table selecting means for selecting one second musical sound information table from the information table, and desired musical sound from the first musical sound information table selected by the musical sound table selecting means. To extract the broadcast, the first
Sound information extraction means for extracting desired music information from the second music information table selected by the music table selection means when desired music information does not exist in the music information table. A characteristic electronic musical instrument. 2. A tone information table in which a plurality of tone information defining one tone is arranged corresponding to a note number is stored, and tone information corresponding to an input note number is extracted from the tone information table. In an electronic musical instrument that generates a musical tone based on the extracted musical tone information, a first storage unit that stores a plurality of first musical tone information tables, a second storage unit that stores a second musical tone information table, Musical sound table selecting means for selecting one first musical sound information table from a plurality of first musical sound information tables stored in the first storing means, and musical sound information corresponding to the inputted note number is the musical sound information. The tone information corresponding to the input note number extracted from the first tone information table selected by the table selecting means does not exist in the first tone information table. In case,
An electronic musical instrument, comprising: musical tone information extraction means for extracting musical tone information corresponding to the input note number from the second musical tone information table.