JP2549441Y2 - Electronic musical instrument - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] The invention relates to an electronic musical instrument having an automatic accompaniment function.

[Prior Art and its Problems] Conventionally, there has been known an electronic musical instrument with an ending function that can play an ending pattern at the end of an automatic rhythm accompaniment. In this type of electronic musical instrument, generally, a rhythm selection switch for selecting a rhythm pattern, a start switch for starting a rhythm, and a stop switch for stopping a rhythm (a start / stop switch for starting and stopping each time the key is pressed) are provided on an operation panel thereof. A ending switch for calling a fill-in pattern, an ending switch for calling an ending pattern, and the like.

At the time of automatic rhythm performance, first, a desired rhythm pattern is selected by a rhythm selection switch, and the selected rhythm pattern is sounded by pressing a start switch. When the fill-in switch is operated while this rhythm pattern (which is a normal rhythm pattern and may be referred to as a main pattern) is being generated, the fill-in pattern is generated and returns to the main pattern after a predetermined period. On the other hand, when the ending switch is pressed, the ending pattern is sounded, and after that, the rhythm accompaniment automatically stops.

As described above, in the related art, a dedicated switch is used to call an ending pattern, and an ending function cannot be provided in a low-cost model.

[Purpose of the invention] This invention has been made in view of the above-mentioned circumstances, and the purpose of the invention is to provide a feeling of ending a song by calling an ending pattern without providing a dedicated ending switch. An electronic musical instrument having an automatic accompaniment function is provided.

[Constitution of the Invention] In order to achieve such an object, the invention selects an accompaniment switch for starting and stopping automatic accompaniment and an accompaniment mode other than the normal accompaniment mode (referred to as a non-normal mode) on the instrument body. Electronic musical instrument with an automatic accompaniment function provided with a non-normal mode selection switch for
Automatic accompaniment control means for: (a) first accompaniment control means for activating automatic accompaniment in the normal accompaniment mode when the accompaniment switch is operated while the automatic accompaniment is stopped; and (b) automatic accompaniment control means. Second accompaniment control means for temporarily shifting the automatic accompaniment from the normal accompaniment mode to the non-normal mode when the non-normal mode selection switch is operated alone during the automatic accompaniment; and (c) the normal accompaniment mode. A third accompaniment control means for guiding the automatic accompaniment to the ending pattern and ending the automatic accompaniment when the accompaniment switch and the non-normal mode selection switch are simultaneously operated during the automatic accompaniment. Provide electronic musical instruments.

In one configuration example, the non-normal mode selection switch may include a fill-in switch for selecting an accompaniment mode of a fill-in pattern. Additionally or alternatively, the non-normal mode selection switch may include a break switch for selecting an accompaniment break mode for breaking automatic accompaniment. Also, the automatic accompaniment may include a rhythm part.

Further, in one configuration example, the automatic accompaniment control means further induces the automatic accompaniment to the ending pattern when the accompaniment switch is operated during the automatic accompaniment in the non-normal accompaniment mode, thereby ending the automatic accompaniment. It has a fourth accompaniment control means.

In one configuration example, the third accompaniment control means guides the automatic accompaniment from the normal accompaniment mode through the non-normal accompaniment mode and then to the ending pattern in response to the simultaneous operation.

[Summary of Invention] In this invention, the automatic accompaniment start and / or stop switch is not used during the normal automatic accompaniment, but is used only as a control for starting and stopping the automatic accompaniment. It focuses on that. That is, the main points of this invention are (a) when the accompaniment switch is operated while the automatic accompaniment is stopped, the automatic accompaniment in the normal accompaniment mode is activated, and (b) the non-normal mode selection switch during the automatic accompaniment in the normal accompaniment mode. Is operated alone, the automatic accompaniment is temporarily shifted from the normal accompaniment mode to the non-normal mode. (C) If the accompaniment switch and the non-normal mode selection switch are simultaneously operated during the automatic accompaniment in the normal accompaniment mode, the automatic accompaniment is performed. To the ending pattern to end the automatic accompaniment.

[Embodiment] Hereinafter, an embodiment of the present invention will be described in detail.

<Structure> FIG. 1 shows the structure of this embodiment. The electronic musical instrument shown is
In addition to the automatic rhythm accompaniment function, it has an automatic base chord function for performing a bass or chord progression at a timing that matches the rhythm progress of the selected rhythm pattern. When this function works, the lower keyboard
Keying on 13 gives the signal on which the automatic base code is based. That is, the automatic bass chord performance control device 16
Based on this signal (key chord), a chord (chord) and bass tone data are generated, and the base tone generation timing information (base pattern signal) matching the selected rhythm pattern is generated. , The output timing of the bass sound data is controlled.
Further, the automatic bass chord performance control device 16 outputs a chord sounding timing signal that matches the selected rhythm pattern, and chops the chord data in accordance with the chord sounding timing signal. As a result, the tone generation circuit 17 is synchronized with the progress of the rhythm played by the selected rhythm pattern by the automatic rhythm playing device 33.
More bass sounds and chords are emitted.

Further, the illustrated electronic musical instrument is an important feature of the present embodiment in that a start / stop switch 36 for designating the start or stop of rhythm performance is inserted between the normal rhythm pattern (this pattern) with respect to the automatic rhythm performance device 33. An accompaniment control unit 39 is provided to control the ending pattern to be read following the fill-in pattern when operated during the filled-in pattern reading mode.

Hereinafter, the configuration of the embodiment shown in FIG. 1 will be described in more detail.

The key coder 11 scans the state of each key of an upper keyboard 12 for playing a melody sound, a lower keyboard 13 which is a source of an automatic bass chord playing, and a pedal keyboard 14 for a manual bass sound playing, and detects key depression. Is the corresponding key code signal KC
Occurs. This key code identifies each key,
For example, two bits are used to distinguish three types of keys, three bits are used to indicate the order of the octave range key,
It is composed of 4 bits for discriminating the pitch name of the key (12 kinds of keys C to B), that is, 9 bits in total. The key coder 11 outputs a scan start signal to the automatic rhythm playing device 16 and the channel processor 15 every one scan (for example, about 5 milliseconds) of all keys. This scanning start signal is used for on / off control of sound generation in the channel processor 15.
It is used to detect which key has been pressed and when the key has been released.

The channel processor 15 receives data of the key code KC from the key coder 11 or the key code AKC representing a bass sound or a chord given via the automatic bass chord playing control device 16 and performs a polyphonic function of up to 12 sounds. The key code data KC * is output in a time-division format for each channel time and transmitted to the frequency information storage device 19 of the tone generation circuit 17, and the key of the allocated channel is stored. In order to control the sounding of the chord data KC *, an attack start signal AS is output in accordance with the detection of the key code data (detection of the corresponding key being pressed). When it detects that a key has been released, it generates a decay start signal DS and sends it to the envelope generation circuit 18. That.

The frequency information storage device 19 includes a channel processor 15
The accumulator 20 reads out a numerical value F proportional to the tone frequency of the key, which is the generation source, based on the key code data KC * given by the accumulator 20, accumulates the numerical value, and repeatedly reads out the sound source waveform signal from the waveform memory 21. Outputs address data qF. On the other hand, the envelope generation circuit 18
Are the data AS and DS given from the channel processor 15.
, An envelope waveform signal EV is generated, and the amplitude of a sound source waveform signal repeatedly read out from the waveform memory 21 is controlled by the envelope waveform signal EV. The sound source waveform signal subjected to the envelope control in this manner is controlled in the tone color circuit 22, and becomes a tone signal of a desired tone color. Tone signals sourced from the upper keyboard are grouped into line 23U, and the lower keyboard 13
Or automatic chords (chords), sourced from
The tone signal representing the sound signal based on the manual operation of the pedal keyboard 14 and the tone signal representing the automatic bass sound generated based on the operation of the lower keyboard 13 are collected on a line 23P.

Gate 31 on line 23L opens during manual performance and closes in automatic bass chord performance mode. This opening / closing control is performed by a signal NG from the base pattern generation circuit 27. On the other hand, during the performance of the automatic bass chord, the envelope gate 30 is controlled by the chord sound generation timing signal CG provided by the chord sound generation timing control unit 29 and in harmony with the current rhythm pattern. Therefore,
The signal of the automatic chord generated by the automatic bass chord performance control device 16 and sent to the tone generation circuit 17 is analog-controlled by the envelope gate 30. As a result, the automatic chord, which is generated when the chord sound is generated, is emitted through the sound system 24. Chords (chords) that harmonize rhythmically with the rhythm being played by the automatic rhythm playing device are played.

The automatic bass code playing control device 16 inserted between the key coder 11 and the channel processor 15 receives the key code KC of the key pressed on the lower keyboard 13 from the key coder 11, and based on this key code KC, Key chords representing bass sounds and chords (chords) in performance
Generate AKC. In particular, the automatic bass chord performance control device 1
6 can detect a base sound from the key code KC of the key pressed on the lower keyboard 13 and chop the base sound in accordance with the timing information of the base pattern from the base pattern generation unit 27. Further, based on the key code KC of the key pressed on the lower keyboard 13, the automatic base chord performance control device 16 changes the key code AKC of the key that is not actually pressed as if the key were pressed. It can also be created automatically (especially when a function called "single finger" is activated), but this function will not be described in further detail.

The key code KC based on the key pressed on the lower keyboard 13 is received by the chord detection unit 25, and the root of the chord and the pitch structure are detected, and as a data RT and a data CD, respectively, a key code processing unit 28, It is output to the data generator 26. Based on the input data CD from the chord detection unit 25, the subordinate formation data generation unit 26 determines the relative pitch structure (pitch structure for the root note) of the bass sound and the chord component sound, and sets the subordinate formation data SD Automatic bass chord performance control device 16
Output to At this time, the chord detection unit 25 determines the timing of the base sound data in accordance with the base pattern pulse (timing information that is in rhythm with the rhythm pattern being played by the automatic rhythm playing device 33) provided by the base pattern generation unit 27. The chords are supplied to the key code processing unit 28 (note that when the chords are dispersed in an arpeggio style and played, the output timing of each subordinate data of the output SD of the subordinate formation data generation unit 26 is determined by the base pattern generation unit 27 Information from
Although it can be controlled by BP1 to BPn, here,
No further description).

In the key code processing unit 28 which receives the root note data RT (this is a key code format) from the chord detection unit 25 and the data SD from the follow-on sound formation data generation unit 26, the key code corresponding to the root of the chord is converted into a key code. On the other hand, a key code AKC having a desired pitch from the root is calculated by adding each data SD having a value of a relative pitch (for example, a tone three degrees higher than the root).
(Key code representing a chord) is generated. The data
Of the SDs, those representing the bass sound are added after the above-mentioned addition operation (not necessary when the root note and the bass sound have the same note name), and a code representing the pedal keyboard 14 is added, and finally the sound is emitted as the bass sound A key code AKC to be performed is generated.

Next, the surroundings of the accompaniment control unit 39 which is a main part of the present embodiment will be described.

The accompaniment controller 39 receives inputs from the fill-in switch 35 and the start / stop switch 36, and sends a fill-in start signal F138 and an ending start to the base pattern generator 27, the chord sounding timing controller 29, and the automatic rhythm playing device 33. Signal EN37, accompaniment start / stop signal ▲
▼ Send out 34. On the other hand, the automatic rhythm playing device 33 sends a fill-in pattern reading end signal FIN4 to the accompaniment controller 39.
0 and an ending pattern read end signal FNN are sent.

As described above, the base pattern generation unit 27 generates a base timing pattern that is rhythmically harmonized with the rhythm pattern selected by the rhythm selection switch 32, and the chord sounding timing control unit 29 is similarly selected. It generates a chord timing pattern that is in harmony with the rhythm pattern and has a built-in timing pattern memory for reading out the corresponding timing pattern. FIG. 2 shows an example of a pattern read out by the automatic rhythm playing device 33, the chord sounding timing control unit 29, and the base pattern generating unit 27 in the fill-in mode. FIG. 3 shows an example of a pattern read out by the base pattern generating section 27 by musical notes.

Hereinafter, the patterns read out by the automatic rhythm playing device 33, the chord sounding timing control unit 29, and the base pattern generation unit 27 in the fill-in mode are collectively referred to as a fill-in pattern,
The patterns read in the ending mode are collectively called an ending pattern, and the patterns read in the normal accompaniment mode are collectively called a main pattern (see FIG. 4).

<Operation> Next, the operation of the embodiment configured as described above will be described, particularly focusing on the accompaniment control unit 39.

First, it is assumed that a predetermined rhythm pattern, base timing pattern, and chord timing pattern have been selected via the rhythm selection switch 32, and that the rhythm is currently stopped.

Here, when the start / stop switch 36 is depressed, the accompaniment control unit 39 detects this as shown in step S1 of FIG. 5, and outputs a signal indicating the start of the rhythm accompaniment.
▼ = 1 is output (step S2). In response to this, the base pattern generator 27 and the chord sounding timing controller 2
9. The automatic rhythm playing device 33 reads the pattern 50.
At this time, when the player inputs a chord through the lower keyboard 13, the chord is generated by the chord sounding timing control unit 29 by the operation of the chord sounding timing control unit 29. The base sound obtained based on the chord inputted through the forming data generating unit 26 and the key code processing unit 28 can be used as a base timing pattern sent from the base pattern generating unit 27 to the subordinate forming data generating unit 26. You will be crushed. When the start / stop switch 36 is pressed again in such a mode of the present pattern, the accompaniment control section 39 steps it.
A signal ▲ ▼ = 0, which is detected in S3 and notifies the stop of the rhythm accompaniment, is output (step S4). On the other hand, the base pattern generator 27, the chord sounding timing controller 29, and the automatic rhythm playing device 33 stop reading the pattern, thereby stopping the rhythm accompaniment.

In the mode of this pattern, if the start / stop switch 36 is not pressed, the fill-in switch 35
It is checked whether or not is pressed (step S5). When the fill-in switch 35 is pressed, the fill-in start signal FI =
1 is output (step S6). In response, the base pattern generator 27, the chord sounding timing controller 29, and the automatic rhythm playing device 33 read out the fill-in pattern 51 (see FIG. 2).

When the start / stop switch 36 is pressed during the generation of the fill-in pattern, the accompaniment control unit 39 detects this in step S7, and outputs 1 as the ending start signal EN (step S11). Generally, in the fill-in mode, when the fill-in pattern 51 (for example, one bar) is read to the end, the mode automatically returns to the main pattern mode in which the main pattern 50 is repeatedly read. To do this, in this example, when the start / stop switch 36 is not pressed during the fill-in mode, EN = 0
(Step S8) At the end of the fill-in pattern 51, the automatic rhythm playing device 33 outputs a fill-in pattern reading end signal FIN = 1. The accompaniment control unit 39 detecting this in step S9 outputs FI = 0 and responds (step S10). In response to this, the base pattern generating section 27, the chord sounding timing control device 29, and the automatic rhythm playing device 33 shift to reading of the main pattern 50.

However, start / stop switch during fill-in
When the ending start signal EN = 1 is obtained by pressing the ending pattern 36, the automatic rhythm playing device 33, the chord sounding timing control section 29, and the base pattern generating section 27 read the ending pattern 52 following the fill-in pattern, and then read the ending pattern. A pattern read end signal FNN = 1 is output. In response, the accompaniment control unit 39 sets EN to 0, and
▼ is set to 0 (steps S12, S13, S4). Thereby, the rhythm accompaniment automatically stops at the end of the ending pattern 52 (see FIG. 6 (a)).

As can be seen from the above description, in this embodiment, when the start / stop switch is pressed during the fill-in, the rhythm accompaniment is ended by reading the end pattern after reading the fill-in pattern. In this case, the entire (fill-in pattern + end pattern) can be made a pattern that gives a good sense of the end of the music. Therefore, in terms of hardware, a short end pattern can give a substantially sufficient sense of ending the music, which leads to saving of the end pattern memory.

<Modifications> The present invention is not limited to the above embodiment, and various modifications,
Changes can be made. For example, as shown in FIG. 6 (b), during reading of this pattern, the fill-in switch and the start / stop switch are pressed almost simultaneously or rolled over to shift to the fill-in pattern, and finally the ending pattern is read. It may be. In this case, the detection of substantial simultaneous pressing can be realized by providing a timer means in the accompaniment control unit 39. Rollover can be realized by using flag means for storing the ON state of one switch.

As shown in FIG. 6 (c), a break switch for temporarily stopping the rhythm accompaniment is used (in place of or in combination with the fill-in switch). When a start / stop switch (instead of an individual start switch, stop switch, which is also the same in the other modified examples and the above-described embodiments) is pressed during the operation, immediately or as shown in the drawing. After the end of the break period, this pattern may be read out in about one or two measures, or a fill-in pattern may be read out, and then the ending pattern may be read out to end the rhythm accompaniment.

As shown in FIG. 6D, by pressing the start / stop switch and other control switches simultaneously during reading of an arbitrary pattern, the ending pattern is immediately or after a predetermined time. You may make it switch.

Although the automatic bass chord function in the above embodiment is considered to be effective for music, it may not be desirable.

[Effects of the Invention] As described in detail above, according to the invention, in an electronic musical instrument having an automatic accompaniment function capable of playing an ending pattern, an accompaniment switch (accompaniment start switch, accompaniment stop, Switch, accompaniment start / stop switch, etc.), the accompaniment switch is used for starting and stopping the accompaniment, and when the accompaniment switch is operated under special conditions, that is, in the normal accompaniment mode. When the accompaniment switch and the non-normal mode selection switch are simultaneously operated during the automatic accompaniment, the operation is detected and the automatic accompaniment is automatically led to the ending pattern (note that the normal accompaniment is used). If the non-normal mode selection switch is operated alone during automatic accompaniment in Shift to normal mode). Therefore, the ending mode selection switch for selecting the ending mode can be eliminated from the control panel of the musical instrument main body, and as a result, the configuration of the control panel is simplified, which also has the advantage of reducing the cost.

[Brief description of the drawings]

FIG. 1 is a block diagram of an electronic musical instrument according to an embodiment of the present invention.
FIG. 2 is a diagram in which an example of a fill-in pattern is represented by musical notes,
FIG. 3 is a diagram showing an example of an ending pattern in musical notes, FIG. 4 is a diagram used to prove the terms of the present pattern, fill-in pattern and ending pattern, and FIG.
Fig. 6 is a flowchart of the operation of the embodiment, and Fig. 6 is a diagram used for explaining the outline of the modification. 33 ... automatic rhythm playing device, 35 ... fill-in switch, 36 ... start / stop switch, 39 ... accompaniment control section, 50 ... this pattern, 51 ... fill-in pattern,
52 ... Ending pattern.

Claims (6)

(57) [Scope of request for utility model registration] An automatic accompaniment provided with an accompaniment switch for starting and stopping an automatic accompaniment and a non-normal mode selection switch for selecting an accompaniment mode other than the normal accompaniment mode (referred to as a non-normal mode) on a main body of the musical instrument. In an electronic musical instrument with a function, the automatic accompaniment control means includes: (a) first accompaniment control means for activating automatic accompaniment in a normal accompaniment mode when the accompaniment switch is operated while automatic accompaniment is stopped; b) second accompaniment control means for temporarily shifting the automatic accompaniment from the normal accompaniment mode to the non-normal mode when the non-normal mode selection switch is operated alone during the automatic accompaniment in the normal accompaniment mode; c) When the accompaniment switch and the non-normal mode selection switch are simultaneously operated during the automatic accompaniment in the normal accompaniment mode. Electronic musical instrument, characterized in that it comprises a third accompaniment control means for terminating the automatic accompaniment led dynamic accompaniment ending pattern. 2. The electronic musical instrument according to claim 1, wherein said non-normal mode selection switch comprises:
An electronic musical instrument including a fill-in switch for selecting an accompaniment mode of a fill-in pattern. 3. The electronic musical instrument according to claim 1, wherein said non-normal mode selection switch includes a break switch for selecting an accompaniment break mode for breaking an automatic accompaniment. Musical instruments. 4. The electronic musical instrument according to claim 1, wherein said automatic accompaniment includes a rhythm part. 5. The electronic musical instrument according to claim 1, wherein said automatic accompaniment control means further comprises: (d) when said accompaniment switch is operated during automatic accompaniment in a non-normal accompaniment mode. An electronic musical instrument, further comprising: a fourth accompaniment control means for guiding an automatic accompaniment to an ending pattern and terminating the automatic accompaniment. 6. An electronic musical instrument as set forth in claim 1, wherein said third accompaniment control means is adapted to control said simultaneous operation.
An electronic musical instrument wherein automatic accompaniment is led from a normal accompaniment mode to a non-normal accompaniment mode and then to an ending pattern.