JP3271266B2 - 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 for controlling sound generation by program processing.

[0002]

2. Description of the Related Art In recent years, microcomputers have been frequently used in electronic musical instruments, and many functions of internal operations have been controlled by program processing. In addition, many functions become possible due to microcomputer control, and program processing is becoming complicated.

A conventional electronic musical instrument will be described below.
FIG. 5 shows an example of control processing for sound management of a conventional electronic musical instrument such as an electronic organ or an electronic piano. In FIG. 5, reference numeral 51 denotes first output determination means. 52 is a first output judgment. 53 is a first output means. 54 is a second output determining means. 55 is a second output judgment. 56 is a second output means.

The operation of the control processing configured as described above will be described below. First, play the keyboard or MIDI (MUSIC INSTRUMENT)
When a sound generation request is generated as a key event due to, for example, an input from a digital interferometer (DIGITAL INTERFACE), the first output determination unit 51 determines whether or not to sound a sound source. The judgment factor depends on the specifications of the electronic musical instrument.For example, the key data corresponds to which sound part by keyboard split, the corresponding sound part switch is set to sound, the automatic accompaniment function is operating, and the key A lot of judgment processing is performed to determine whether the data should be processed as chord identification data, whether or not the MIDI is locally turned off, and whether or not the sound should be finally generated is determined. Next, the processing procedure is judged in the first output judgment 52, and if the sound is generated according to the result of the first output judgment means 51, the process proceeds to the first output means 53; Then, the process proceeds to output determination means 54. The first output unit 53 is an output unit for a sound source, and determines a sound channel, calculates and creates sound data,
Outputs sound generation control data to a sound source. The second output judgment 54 judges data output to MIDI. For example, it is determined which part the key data corresponds to, whether the corresponding part is in a mode for outputting MIDI, and other setting conditions for MIDI. Next, the second
In the output judgment 55, the processing procedure is judged. If MIDI data is to be output according to the result of the second output judging means 54, the process proceeds to the second output means 56. Proceed to step. Second
Means for converting the key data into the MIDI format and outputting the data through serial communication. After the second output means, it is determined by the specifications of the electronic musical instrument. If there is another output, the same output judgment and output means as described above are repeated.

[0005]

However, in the above-described conventional configuration, the first output determination means 51, the second output determination means 54, and the Subsequent output determination steps in the output determination means become enormous. On the other hand, an increase in the number of processing steps for controlling sound management has a problem that a response delay from keyboard operation to sound generation increases.

The present invention has been made to solve the above-mentioned conventional problems, and has as its object to provide means that does not increase the number of determination steps.

[0007]

In order to achieve this object, an electronic musical instrument according to the present invention comprises an input line comprising a key event input group including a keyboard operation input and a MIDI input, and a tone generation process including a sound source group and a MIDI output. And a sound output path table in which output lines formed by output processing are arranged in a matrix, and by setting connections of intersections of the matrix, one or a plurality of connected intersections can be handled. Input line data to be output as output line data, and when a path event which is a change factor of the sound generation path occurs, the sound generation path table is created by setting the connection of the intersections of the matrix. Means, one or more route reference means for referring to the pronunciation route table when a key event occurs, and one or more means for performing output processing accompanying the key event It has an output means, the configuration of.

[0008]

With this configuration, the sounding path determination means is executed only in the case of a path event that requires a change in the sounding path of the electronic musical instrument, and a sounding path table is created. Further, in the case of a key event of a performance such as a keyboard operation, in the key event processing, a sound generation judgment or another output judgment is made only by referring to a sound generation path table, and then a sound generation means or another output means is executed.

[0009]

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, 10 is a key event process,
11 is first route reference means, 12 is first output means, 1
3 is a second route reference means, 14 is a second output means, 15
Is a sounding event process, and 16 is a route determining means.

The operation of the electronic musical instrument configured as follows will be described. First, the routing table of FIG. 2 will be described. Routing table is input line ( m1, m2, m3 ... m22 )
And an output line ( l1, l2, l3... L24 ), and the input line has the MI shown at the top of the table.
There are DI input, right keyboard, left keyboard, automatic accompaniment, and the output line is polyphonic part 1 sound source shown on the right of the table,
There is a polyphonic part 2 sound source, an accompaniment part 1 sound source,..., An automatic accompaniment chord calculation register. The routing table is displayed in a state of connection or non-connection at the intersection of the input line ( m1, m2, m3... M22 ) and the output line ( l1, l2, l3... L24 ). The data flow from the input line to all output lines can be shown. On the hardware, R in the microcomputer
AM (random access memory)
1 "(connection state) and" 0 "(non-connection state) are stored in. The route event processing 15 in FIG. 1 is executed when an event that requires a change in the status of the routing table occurs (the occurrence of a route event). 3 shows an example of a processing flow of a path event, in which the contents of the event of the path event are checked, and each processing is performed according to the event factor.
First, in a first branch judgment 31, it is checked whether or not the event is a change event of a MIDI basic channel. If the change event is a corresponding change event, the process proceeds to a first route setting process 35, where lines l1,.・ Intersection of l24 and line m1 ... m16 and l8 ... l23 and m1 ... m22
Is set according to the changed basic channel, and the process proceeds to the second branch determination 32. If there is no MIDI basic channel change event in the first branch decision 31, the process proceeds to the next second branch decision 32. In the second branch judgment 32, it is checked whether or not the event is a MIDI local off change event. If the event is a corresponding change event, the process proceeds to a second route setting process 36,
At the intersections of the lines l1... L7 and the lines m17... M22 in the routing table, settings are made in accordance with the changed MIDI local off setting, and the process proceeds to the third branch judgment 33. Also the second
If it is not the MIDI local off change event in the branch judgment 32, the process proceeds to the next third branch judgment 33. In the third branch judgment 33, it is checked whether the event is a change event of the automatic accompaniment switch.
Proceeding to the third route setting process 37, the line l1
... The intersection of l23 and lines m19... M22 is set according to the state after the change, and the flow proceeds to the fourth branch judgment. If the third branch determination 33 indicates that the event is not a change event of the automatic accompaniment switch, the process proceeds to the next fourth branch determination 34.
In the fourth branch judgment 34, it is checked whether the event is a change event of a part switch. If the event is a corresponding change event, the process proceeds to a fourth route setting process 38, where the lines l1. For the intersections of m1,..., m22, settings are made according to the state after the change. In this embodiment, four types of path events are shown, but the type of path event depends on the specifications of the electronic musical instrument. The key event processing 10 of FIG. 1 will be described. A key event is an event when a sounding request or a MIDI output request occurs due to a performance on a keyboard or a MIDI input. When there are a plurality of outputs as in the example of the routing table in FIG. 2, first, the first route reference means 11 is performed. If the results are to be output, the first output means 12 is executed. Perform the second route reference means 13;
As a result, if output is to be performed, the second output unit 14 is executed. If there is more output, the route reference means and output means are further repeated. FIG. 4 shows a processing example of a key event.
For example, the key event of the left keyboard in FIG. 2 corresponds to the first key event processing 41 from the type of output. First, in the branch judgment 41a, the connection state of the intersection of the route table l1, m17 and m18 is checked. If the connection is "1", the next sounding channel determination means 41b and the sound source control data calculation processing 41
c) After executing the sound source data output means 41d, the process proceeds to branch determination 41e. If the connection is not connected at "0" in the branch determination 41a, the process proceeds to the branch determination 41e. The sounding channel determination means 41b checks the sounding state of the sound source and determines a sounding channel for sounding according to the key event being processed. The sound source control data calculation processing 41c calculates sound source control data (tone color data, volume data, pitch data, etc.) according to the key event being processed. The sound source data output means 41d outputs sound source control data to a sound source (generally a sound source LSI). In the branch judgment 41e, the route table l8... L2
Check the connection state of the intersections of 3 and m18, and if any of these intersections has the connection "1", check the MID
The I output process 41f is executed, and the process proceeds to the next branch determination 41g.
If these intersections are all non-connection "0", the flow proceeds to branch determination 41g. The MIDI output processing 41f converts the key event being processed into note data conforming to the MIDI format, and then transfers and outputs the note data by serial communication according to the MIDI standard. In the branch judgment 41g, the connection state at the intersection of l24 and m18 is checked. If the connection is "1", the chord register output processing 41h is executed and the processing is terminated. If the intersection is non-connection "0", the process ends. The chord register output process 41h is a process of writing the key data to a chord judgment register in order to use the key event being processed as key data for chord judgment. Next, in the case of the key event of the right keyboard in FIG. 2, the key events of the automatic accompaniment bass, Acomp1, Acomp2, and Acomp3 correspond to the case of the second key event processing 42 depending on the type of output. The processing steps 42a to 42f perform output processing to a sound source and output processing to MIDI in the same manner as the processing of 41a to 41f with reference to the corresponding routing table. Also, among the key events of the MIDI input of FIG. 2, a chord input corresponds to the third key event processing 43 from the type of output. The processing steps 43a to 43f perform the output processing to the sound source and the output processing to the chord register with reference to the corresponding routing table, similarly to the processing of 41a to 41d and the processing of 41g to 41h.

As described above, according to the present embodiment, a sound generation path determining means for creating a sound generation path table when a path event which is a change factor of a sound generation path occurs, and the sound generation path table is generated when a key event occurs. By providing one or a plurality of route reference means to be referred to and one or a plurality of output means for performing an output process accompanying a key event based on a result of the route reference, a step of determining a sounding route when a key event occurs can be performed. It can be performed in a short time and the pronunciation response can be improved.

In the embodiment, the input is a keyboard, MID
I and the output were a sound source and MIDI, but it goes without saying that a sequencer play can be added to the input and a sequencer storage register can be added to the output.

[0014]

As described below, the present invention provides a keyboard operation input,
An input line consisting of key event input group including a MIDI input, sound sources, sound processing including MIDI output has a sound path table arranged and an output line consisting of output processing in a matrix, connected at the intersection of said matrix By setting, the data of the input line corresponding to one or a plurality of connected intersections is configured to be output as the data of the output line, and when a path event that is a change factor of the sound generation path occurs, A sounding path determining means for creating the sounding path table by setting connections at intersections of the matrix; one or more path referencing means for referring to the sounding path table when a key event occurs; By providing one or a plurality of output means for performing a sound generation path in a short time when a key event occurs, It is to realize an electronic musical instrument that can improve the Pons.

[Brief description of the drawings]

FIG. 1A is a conceptual flow diagram of key event processing of an electronic musical instrument according to an embodiment of the present invention; FIG. 1B is a conceptual flow diagram of a path event of the electronic musical instrument according to the embodiment;

FIG. 2 is a diagram showing a path for explaining the operation of the electronic musical instrument in the embodiment.

FIG. 3 is a detailed flowchart of a route event according to the embodiment of the present invention.

FIG. 4A is a detailed flowchart of a first key event according to the embodiment of the present invention; FIG. 4B is a detailed flowchart of a second key event according to the embodiment of the present invention; Detailed flowchart of the third key event in the example

FIG. 5 is a conceptual flow chart of a conventional electronic musical instrument.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Key event processing 11 1st path | route reference means 12 1st output means 13 2nd path | route reference means 14 2nd output means 15 path | route event processing 16 sound generation path | route determination means 30 path | route event 31 1st branch determination 32nd Branch decision 2 33 Third branch decision 34 Fourth branch decision 35 First route setting process 36 Second route setting process 37 Third route setting process 38 Fourth route setting process 41 First key event Processing 41a Branch judgment 41b Sounding channel determination means 41c Sound source control data calculation processing 41d Sound source data output means 41e Branch judgment 41f MIDI output processing 41g Branch judgment 41h Chord register output processing 42 Second key event processing 42a Branch judgment 42b Sounding channel determination means 42c Sound source control data calculation processing 42d Sound source data output Means 42e branch determination 42f MIDI output process 43 third key event processing 43a branch decision 43b sounding channel determining unit 43c tone generator control data computing 43d sound source data output unit 43e branch decision 43f chord register output process

Claims (1)

(57) [Claims] [Claim 1] keyboard operation input, and the input line consisting of key event input group including a MIDI input, sound sources, MIDI
It has a tone generation path table in which output processing including output and output lines composed of output processing are arranged in a matrix, and by setting connections at the intersections of the matrix, it is possible to correspond to one or a plurality of connected intersections. Input line data to be output as output line data, and when a path event which is a change factor of the sound generation path occurs, the sound generation path table is created by setting the connection of the intersections of the matrix. An electronic musical instrument comprising: means, one or more path reference means for referring to the sounding path table when a key event occurs, and one or more output means for performing output processing accompanying the key event.