JPS59192289A - Automatic accompanying apparatus for electronic musical instrument - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of the Invention) The present invention relates to an automatic accompaniment device for an electronic musical instrument, and in particular detects a key touch state during a performance and performs fill-in control and accompaniment pattern change control in accordance with this R touch state. The present invention relates to an automatic accompaniment device.

(Background of the Invention) Conventionally, in automatic accompaniment devices for electronic musical instruments, in order to eliminate the monotony of automatic accompaniment such as autorhythm, autochord, autobass, etc., fill-in switches and/or turn selection switches have been installed on the operating surface of electronic musical instruments. It is known that by operating these switches during a performance, an automatic performance using a fill-in pattern is performed instead of the normal 9 turns for a certain period of time, or a variation is provided to the automatic accompaniment.

By the way, in such an automatic accompaniment device for an electronic musical instrument, is it possible to insert a fill-in pattern? To change turns, press the fill-in switch or IQ even while playing a key.
This invention has been made in view of the above-mentioned problems in the conventional type. In automatic accompaniment devices for electronic musical instruments, the idea is to detect key press touches during performance and automatically change the accompaniment pattern based on the touch output.Insertion of fill-in patterns without interfering with performance. An object of the present invention is to provide an automatic accompaniment device that eliminates the monotony of automatic accompaniment by making it possible to change turns.

(Structure of the Invention) In order to achieve the above object, the present invention includes a key touch detection device that generates a mystery touch output according to the state of a key press touch on a keyboard, and a key touch detection device that stores a plurality of accompaniments/Q turns and The accompaniment pattern read out according to the touch output (a turn memory is provided and the accompaniment is played according to the key press touch output) Q-turn is changed (explanation of the overall configuration of the embodiment) The details of this invention will be explained below with reference to the drawings. Explain.

FIG. 1 shows a block configuration of an electronic musical instrument to which an automatic accompaniment device according to an embodiment of the present invention is applied.

In the figure, the keyboard section 1 (IU, IL) consists of an upper keyboard IU for playing melodies and a lower keyboard IL for playing chords. These upper keyboard U and lower keyboard IL each have a large number of arranged switches and generate key data UKKC and LKKC representing pressed keys.

The initial touch sensor 2 and the aftertouch sensor 3 detect the pressed state of a key on the keyboard section 1. The initial touch sensor 2 detects the speed at which a key is pressed, that is, the touch strength, and sends an initial touch signal ITS.
The aftertouch sensor 3 detects the initial pressing edge after the key is pressed by the initial touch, that is, the strength of the aftertouch, and generates an aftertouch signal ATS.

Accompaniment R turn memory 4, rhythm type selection switch 5
For each rhythm type selected in , there are 5 patterns consisting of 1 type of normal pattern, 3 types of variation resistance turn, and 1 type of fill-in pattern.
I remember different types of accompaniment Q-turns. Accompaniment/(Turn includes rhythm pattern data RP for controlling the types of percussion instruments that make up rhythm sounds and the sound timing, yaw 1 pattern data CT for controlling the sound timing of automatic chord sounds, and sound sound timing of automatic bass sounds. and one-st/g-turn data BT for controlling the bass development at that time.These accompaniment patterns are obtained from the rhythm type selection data R8 from the rhythm type selection switch 5 and from the counter 7 described later. count output HN and pattern change data F I L , VARI , VAR2, V from the pattern change control circuit 9
It is read out from the accompaniment pattern memory 4 using AR3 as address designation data.

The tempo oscillator 6 supplies an oscillation output, ie, a tempo, e-rus TP, to the counter 7, for example from a variable frequency oscillator 7. The counter 7 counts this tempo pulse TP and stores the count value HN in the accompaniment IQ turn memory 4.
as addressing data. Therefore, this automatic performance, that is, the accompaniment pattern reading tempo is determined by the period of the tempo pulse TP. The counter 7 further includes 3
Tempo 79 outside the number of beats depending on the rhythm type, such as beats or 4 beats
Each time you count Luss TP, the carrier output CO is measured)
(Output as a file.

The mode selection switch 8 is used to select the mode of fill-in, (+turn insertion, and accompaniment/g turn change) to be performed by this automatic accompaniment device according to the state of touch on the key. One of five modes, modes 1 to 5, can be selected.

Mode 1: When the instantaneous touch strength (touch strength instantaneous value) of the initial touch exceeds a predetermined threshold, a fill inno (turn is inserted) from that point to the beginning of the next measure.

Mode 2 When the instantaneous touch strength of the near-after touch exceeds a predetermined threshold, a fill-in pattern is inserted from that point to the beginning of the next measure.

Mode 3 When the strength of the near aftertouch exceeds a certain value and continues for a certain period of time, a fill-in pattern is inserted into the next measure.

Mode 4: When a signal (average intensity (integral value) of the initial touch) is generated, the pattern is changed to correspond to the signal level.

Mode 5 When a near-aftertouch average intensity (integrated value) signal is generated, the pattern is changed to #=playing pattern according to this signal level.

Companion l (turn refinishing control circuit &89 detects the touch state in the final part 1 based on the output processing of the Ininyalta Tsuchi sensor 2 and aftertouch sensor 3, and performs the fill-in/turn refinishing control circuit according to the mode selected by the mor selection switch 8. (Turn insertion and accompaniment) Controls Q-turn changes.

These control data FIL and VARI~3 are accompaniment data? The data is applied to the turn memory 4 as addressing data.

The melody musical tone forming circuit 10 has a height corresponding to the key data U K K C from the lower keyboard U and a volume corresponding to the sound signals T S , A , T S from each touch sensor 2 and 3 . Form a melody tone fit number of tone quality and note length. This melody sound signal is a accompaniment sound signal, i.e., an iro sound signal formed by a musical sound forming circuit 11 for chords, a pace sound signal formed by a musical sound forming circuit 12 for pace sounds, and a rhythm striking instrument formation circuit 13. The sound signal of the percussion instrument formed by In m1lL, fj, the root note of the hollyhock chord and the chord name (major,
Detect minor, seventh, etc.) 1. tJ1! Everyone data R
T.

Output chord name data CN.

The bass note key data forming circuit 17 includes the harmony detection circuit 16.
The chord name data CN from the circuit 16 and the bass / from the accompaniment IQ turn memory 4 are
? Base tone key data BKC of a pitch (1st, 3rd, 5th, etc.) determined by the pace development data included in the turn data BT is formed and output at the timing of the pace IQ turn data BT from the memory 4.

The chord tone forming circuit 11 forms musical tones corresponding to each of the plurality of key data LKKC from the lower keyboard IL,
Accompaniment is the chord signal formed by acoustically mixing and singing these musical tones.
It is output every time the pulse CT inputs.

The pace tone musical tone forming circuit 12 forms a bass tone according to the bass tone key data BKC inputted from the bass tone key data forming circuit 17.

The rhythm percussion instrument sound forming circuit 13 forms percussion instrument sounds based on rhythm pattern data RP sent from the Banhata Hataan memory 4 for each type of percussion instrument.

(Detailed Operation of Accompaniment IQ Turn Change Control Circuit 9) Next, the detailed operation of the accompaniment IQ turn change control circuit 9 will be described with reference to FIG.

When the keyboard is played in this electronic musical instrument, signals ITS and ATS are sent from the initial touch sensor 2 and the aftertouch sensor 3 (FIG. 1) to the accompaniment note turn change control circuit 9 in accordance with the state of touch on the keyboard. is supplied. Further, in response to selection of any one of modes 1 to 5 by the mode l''' selection switch 8 (FIG. 1), 5-bit mode selection data is supplied in which any pit is 61''.

Furthermore, a bar pulse Co is supplied from the counter 7 at the beginning of each bar.

The instantaneous touch strength threshold comparison circuit 911 compares the initial touch signal ITS from the initial touch sensor 2 with a predetermined threshold and generates an output "1" when the initial touch strength (instantaneous value) exceeds the predetermined value. . Mo I-″1
is selected, the mode P selection signal MOD I is 1
Therefore, the output "'1" of the comparison circuit 911 is given as a set input to the hold circuit 914 via the AND gate 912 and the OR gate 913, and the bold circuit 914 generates the output F I L = "1". .on the other hand,
The measure/(rus CO) from the counter 7 (Fig. 1) is a delay circuit driven by the system clock φ that drives the entire electronic musical instrument, for example a delayed flip-flop 9.
After being delayed by one clock time at step 15, it is applied to hold circuit 914 as a reset input. Therefore, the output FIL of the hold circuit 914 is 1" from when the initial touch strength exceeds the threshold until the beginning of the next measure. This output FIL="1" is the accompaniment) (turn memory (given to the first erection). For memory 4 voltage, this F I L = ″′1″
The fill-in pattern is read out using the control data as addressing data.

When mode 2 is selected, the instantaneous touch strength threshold comparison circuit 921 operates in the same manner as the above comparison circuit 911 for the aftertouch signal layer from the aftertouch sensor 3, and this mode 2 and gate 922 when is selected
A hold circuit 914 is set via an OR gate 913.

Therefore, when mode 2 is selected, the control output FIL will be "]" from the time when the aftertouch strength exceeds the predetermined threshold until the beginning of the next measure, and the accompaniment Q-turn memory 4
The fill-in Q Kuhn is read out from.

When mode 3 is retranslated, the duration measurement circuit 931 receives the aftertouch signal ATS.
The time during which the level of is above a certain value is measured, and when this time reaches a certain time, an output "1" is generated. The hold circuit 932 is set by this output "1", and the output Q
="l" is generated.

Antogame-1-933 has this output Q-″1 on one input.
” is given, and the input of the ability is given the measure/Q pulse Co. Therefore, when the first measure pulse Co-1 is input after the output Q becomes “I+”, the AND gate 93
3 generates a pulse output "l". Further, this bar pulse Co-']'' is delayed by one clock time by the delay circuit 915 described above and then applied to the reset terminal of the hold circuit 932.
is AND gate 93 by the first bar pulse after setting
3 generates a Norse output "1", it is immediately reset. This pulse output "1" sets the hold circuit 914 via the AND gate 934 and the OR gate 913 if mode 3 is selected and the mode selection signal MOD3 is "1".

As mentioned above, the hold circuit 914 is reset by the first measure pulse CO after setting, so when Mole-''3 is selected and the aftertouch strength is one foot or more and continues for a certain period of time, the hold circuit 914 is reset. Output F for next 1 measure
The average touch strength detection circuit Nr941, which generates IL-"1" and a fill-in pattern is extracted from the memory 4, integrates the initial touch signal ITS and outputs a level corresponding to the average strength of the initial touch. Occur. The level comparator 942 compares the output level of the detection circuit 941 with
It compares with three reference levels, medium and small, and generates a 3-bit output depending on the output level. That is, the detection circuit 9
If the output level of 41 is smaller than the reference level (small), it outputs "0" to all bits, if it is above (small) or more (medium), it outputs "1" only to the first bit, and if it is above (medium) or less (thick), it outputs "1" to all bits. Second
l” for bit only, 1 for only 3rd bit for (large) or more
’” is output.

Average touch strength detection circuit 951 and level comparator 95
2 operates in the same manner as the average touch strength detection circuit 941 and the level comparator 942, except that it operates based on the aftertouch signal A I''S, and all bits are 0 or 1 of the 1st to 3rd bits. Only bits produce a '1' output.

The selector 943 connects the rail comparators 942 to 3 to the A input.
Given the average initial touch strength data of the bit,
3-bit aftertouch average strength data is given to the B input from the level comparator 952, while the input selection signal S
Mode selection signals MOD4 and MOD5 are input as A and SB, respectively. For this reason, the selector 94
3 is a mode selection signal MOD47) When K is "1", the A input is selected and output. Output VA of this selector 943
R] to 3 are given to the accompaniment pattern memory 4 as accompaniment and e-turn change control data. As a result, motor 1'''
4 is selected, while the average initial touch strength signal is being generated, the average strength of the initial touch among the three types of pariene yonno Q Kuhn stored in the memory 4, that is, the control data VAR1 to VAR3 is selected. A NoQ turn corresponding to the song is played. Also, if mode 5 is selected,
Mode selection signals MOD5-61'' are applied to selector 943 as B input selection signal SR, whereby selector 943 selects and outputs the output of level comparator 952. That is, in this case, accompaniment pattern change control data VARI~3 corresponding to the average strength of aftertouch is given as accompaniment and e cuno change control data VARI~3. While the average strength signal is occurring, the parity function according to this average strength? The turn is read out. In addition,
Even when mode 4 (or 5) is selected, the output of the average touch strength detection circuit 941 (also 1951) is the reference level (or 1951) of the level comparator 942 (or 952)
Needless to say, when the comparator output, that is, the control data output from the selector 943 is all bits "o", the change to parie-yon and Q-turn is not performed, and the normal pattern continues to be played. Also, when none of the modes Yz~5 is selected, 2
Even if modes 1 to 3 are selected, if the fill-in control signal FIL is O'' in these modes 1 to 3, the normal pattern is still played.

In the above embodiment, the instantaneous value or average value of the touch strength or the combination of the touch strength and time is detected to change the 7g turn or perform fill-in control. It is also possible to change patterns and perform fill-in control depending on the frequency of touch strength. Furthermore, it is also possible to change the IQ turn and perform fill-in control by detecting the left-right movement of the key with a sensor.

(Effects of the Invention) As described above, in this invention, the sharp touch accompanying the performance is detected to control the fill-in-no Q-turn insertion or the change of Ban Hong putter 7, but the 5% touch accompanying the performance is controlled. , which originally adds changes to the flow of music;
Since fill-in or no-Q-kuno changes also add changes to the flow of music, the present invention allows automatic accompaniment control that is naturally rich in musicality.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an electronic musical instrument to which an automatic accompaniment device according to an embodiment of the present invention is applied, and FIG. 2 is a detailed block diagram of an accompaniment pattern change control circuit in the electronic musical instrument of FIG. 1. IU...Upper@board, IL...Mountain/Lower keyboard, 2
・・Mountain・Initial touch sensor, 3・・・・・・
Aftertouch sensor, 4...Accompaniment l (turn memory, 8...Mode selection switch,
9...river/accompaniment) (turn change control circuit, 10
...Music tone formation circuit for melody, 11...
・Musical sound formation circuit for chords, ]2...Musical sound formation circuit for bass sounds, ]3...Percussion instrument sound formation circuit for rhythm. Patent applicant: Nippon Gakki Manufacturing Co., Ltd. Agent: Attorney Tatsuo Ito Attorney: Patent attorney Tetsuya Ito

Claims (1)

[Scope of Claims] 1. A large number of key switches constituting a keyboard, a key touch detection device that generates a key touch output according to the state of a key touch on the keyboard, and a key touch detection device that stores a plurality of accompaniment notes and An electronic device characterized by comprising an accompaniment 7g turn memory from which an accompaniment pattern is read in accordance with a key touch output, and a musical tone forming circuit that forms a musical tone based on key data representing keys pressed by a keyboard performance and the accompaniment pattern data. Automatic accompaniment device for musical instruments. 2. The automatic accompaniment device according to claim 1, wherein the plurality of accompaniment patterns include a fill-in pattern, and fill-in control is performed by inserting different R turns for a certain period of time in accordance with the key touch output. 3. The automatic accompaniment device according to claim 1, wherein the plurality of accompaniment/R turns include a variation q turn, and IQ turn change control is performed in accordance with the key touch output.