JPS5968787A - 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 The present invention relates to an electronic device that can automatically play a melody as an additional melody when playing a melody.
By varying the pitch between the melody tones and the additional tones depending on the range in which the melody tones fall, harmony can be comfortably achieved over the entire tonal range.

(2) Conventionally, electronic musical instruments that can generate seasonal melodies include:
Paddy number keys pressed on the accompaniment keyboard (e.g. C2, 12, G2
) and note name (CXHl, G for C2, E2, G2)
)'ff: The lower 1st octa-7 of the key pressed on the melody keyboard (for example, tl+C6) from among the many same notes
It is known that the sounds in the range (C5, E5, Gs in the case of Oa)' are selected as the overtones and are sounded together with the melody sound (C6).
(See Publication No. 7895).

However, in such electronic musical instruments, no matter which range of the melody note and key you press, the interval between the melody note and the upper note changes a lot, so the whole range is affected. There was a problem that even with four songs, I couldn't get a beautiful enough harmony.

The purpose of this clarification is to provide an instantaneous electronic musical instrument that can obtain comfortable harmony over the entire range.

The electronic musical instrument according to the present invention is characterized in that it is determined in which region of the melody keyboard a key with an iP is placed, and a different note interval is specified for each region depending on the result of the determination. It is something to do. In my opinion, in the commercial range, the sound has a slightly oven-like sound, and it is wide, and it is important to get harmony, but in the low range, if it is oven-like, the harmonies are too noticeable and I don't like it. Therefore, it is a VCLk type that allows you to listen to the concert in a slightly close manner, so that you can obtain beautiful harmonies in the entire range.

The present invention will now be described in detail with reference to embodiments shown in the accompanying drawings.

FIG. 1 shows an electronic device according to an embodiment of the present invention.
7J is a genius, and this electronic musical instrument is designed to control the generation of melody tones, 11th tones, additional melody tones, etc. with the help of a microcomputer.

The central processing unit (OP U) 10 operates according to programs stored in a program memory 12 consisting of a ROM (read-only memory), and controls the volume switch (sw') of the panel 14, that is, the tone switch, Function switch F- (?11 is a switch for auto bass chord, auto rhythm, etc.), additional sound mode switch MS, etc. 2sw (switch) is scanned through the interface 16 to detect all the states of each switch, and the detected switch Information (5flAM (random access memory) is sent to the register in the working area 18, and when there is a change in the switch state, the working area 18 is sent via the bus 2U'i to the UK sound interface 22 and/or the LK sound. A switch switch is provided to the interface 24.

In addition, the central processing unit 10 scans the lower keyboard for melodies and the lower keyboard 3o for official keys via the key interface 26, detects the state of the valley keys, and stores the detected key information in the working area 18. When the register is entered and the key status changes, the bus 20 is activated from the working area 18 and the U
Key information is supplied separately for the K sound interface 22 and/or the LK sound interface. In this case, +J kajoon -
When the switch MS is turned on, the central processing unit 10
is based on the key-on information from the upper keyboard and the key-on information from the lower keyboard 30 (or the key-on information from the 1-keyboard memory), and generates the seasonal sound information for two notes in the working area 18. Put 1 in the register, then bus 2
The UK sound interface 2'2K is supplied through the O meeting.

UKf-1' Turf Ace 22 is working area 1
The key data UKK'D and tone control data UC are supplied to the upper keyboard tone generator (UKTG) 32 based on the key information and switch information regarding the upper keyboard from 8, and the tone generator 32 receives the key data U4KD.
and forming a UKK signal according to the tone control data UO,
The signal is supplied to a speaker 36 via an output amplifier 34. Furthermore, when the additional sound mode switch MS is pressed, the UK sound interface n also supplies the additional material key data as key data UKKD to the tone generator 32, so the tone generator 32 outputs the UK material double signal. A seasonal sound signal is also transmitted.

The LK material interface 24 is connected to the working area 18
This is to supply key data LIKKD and tone control data LO-jz to the tone generator (LKTG) 3H for the lower keyboard based on key information related to the lower keyboard and switch 1#, and the tone generator related key data LKK.
In response to D and tone color unpacking 1 data LO, an LK signal is generated and supplied to the speaker 36 via the output amplifier 34.

In response, the speaker 36 emits a UK tone (usually a melody) corresponding to the key pressed on the upper keyboard, and
LK sound corresponding to key presses on the lower keyboard 30 (Tsutomi, O0 materials)
is sounded, and when the additional sound mode switch MS is further pressed, the VC produces two additional sounds as a seasonal melody for the original UK sound.

FIG. 2 shows the register self 16 in the two kink area 18.
For the sake of simplicity, we will only discuss the additional sound forms and operations, and explain the others as various registers. r'4 omitted.

U4KDl ~UKKDlil are C2~C of the upper keyboard path
The data format of each register is one of 1 byte (8 bits) as shown in the representative example for UKKDI.
The most significant bit (MSB) indicates the key status KI9 (91'' if the key is on, ILQ// if the key is off), and the remaining bits are not used.

Also, LKKDI~LKKD51 is the lower play (C of board 30)
It is a key data register corresponding to each of the 61 keys from 2 to C7, and the cheater format of each register is LKKD.
As shown schematically for I, the most significant bit (MSB) of one byte (8 bits) is
If the key is on, 1〃, if the key is off, l'Q/1)-
I note, lowest pitch) (LSB) or note name related flag NF
Therefore, the remaining number of people is 1,040, or unknown. Here, note name related flag NI! ' is a month if you fill in the riddle pressed at 1/keyboard 30 with a song name (if the name is the same in terms of joint salary), for example, C2, E2, C2
If the key is pressed, this and the note name C, l! 1iXG meeting 1bl L; <Furu all the islands C2, lX+)2:
a,,g,,Gtsu; (34)J for G4...
・The corresponding Shimanaseki Jun flag is NF or 11.

By the way, MffiLL is a key number register for storing the key number of one key when one key is pressed on the upper keyboard, and the key number of the lowest key among them when multiple keys are pressed at the same time. . - Yota,” 0
, BF-1 is a buffer register for inserting =& into the additional sound key number data 'MOD, 1lti is an additional sound mode register, which indicates "01" in hexadecimal when the additional sound mode switch MS is on. Something that makes you cry, Engineering NTlf
i A register for writing the first note interval data that specifies the note interval between the melody note and the first phrase upper note, and NT2 specifies the note interval between the first additional note and the second additional note. tJKAKO is the UK any key on flag indicating that any key has been pressed on the upper keyboard, LKAKO is the register that contains all the second note interval data. This is the LK any key on flag. Note that the key numbers for both the upper keyboard and the lower keyboard are C2 key 1 and 2.3 in the following classes.
．． 4... All assignments, Ow's meeting 1) ■.

Referring briefly to Figure 3, the processing of the main routine,
Awaken, dawn.

(9) When the 1st and * source switches (not shown) are fully turned on, processing starts, and the upper and lower keyboards UKX and LK are moved and panel 1 is turned on.
The operation of each of the four switches SW is carried out, and the key information and switch information are taken into the register of the working area 18. Then, it is determined whether there is a change in the key state and the switch state, and if there is no change (if no), the moving and importing operations are repeated.

Here, assuming that there is a change in the key state or switch state (the determination result is YES), the process moves to a branched process according to the event) yuzufASwX UK and LK.

ν Rie is UK, if there is a change in the switch state.
LK color switch change or f4Ji, if yes Y then UK, f, tone switch Shinshu all interface 2
2.24 (each tone generator 32 via z
．． Output to 38.

1, the buffer register TRI F-Q and HiB F-1 are on the platform that was the change of the sound mode switch MS.
Write “00” in hexadecimal to
After A, the contents of BF-(l and BF-1 are sent to the tone generator 32 via the UK sound interface 22'.
Output to. As a result, the additional sound key data of the tone generator 32 is cleared, and the state in which the additional sound is not produced continues, and if the additional sound is being produced, the production is stopped.

Furthermore, in the case of a change in a function switch, data is transferred to various block program processing units, and since this is not related to IM in this case, I will omit the congratulations. Note that after the processing associated with any of the switch state changes described above, the process returns to the scanning and 'l\+ information acquisition processing described above.

- If there is a change in the upper keyboard UK, the key of the changed key + pI information (on or off data and key number data) (output to the zUK sound interface B. After this, the register UKK D l By checking the topmost bit of ~61, if it is pUK any key on or not, if yes Y, fold "01" into the flag UKAKO in hexadecimal and set it to the set state, )-N if flag U
Write r00J'i in hexadecimal to KAKO, this is k +
) Set state. And the flag UKAKO-jz
When set, register UKKDI~
61, all of the highest pits - 01 are checked, the lowest note with the smallest key number is searched, and the key number of this lowest note is set in the register MELL. This bale is checked to see if the register MODB is not "00" in hexadecimal to determine whether it is in the additional sound mode, and if it is not in the additional sound mode, the process returns to the above-mentioned scanning and information acquisition process.

When there is a change in the lower keyboard LK, the key information (on or off data and key number data) of the changed key is output to the iLK sound interface. After this,
By checking the most significant bit of register LKKDI~61, it is determined whether J, LK any key is on, and the result is YES Y.
If so, set flag LKAKO to r01J'(ill
If it is no N, flag L.
Write roOJk in hexadecimal to KAKO to reset it. Then, when the flag LKAKO' (H set state) is set, the pitch name related flag HBr-1g is set for the most significant bit=11 of LKKDI~61 and the pitch name that is the same as this. Thereafter, as in the case of the UK branch described above, it is determined whether the mode is seasonal material, and if it is not the additional material mode, the process returns to the scanning and information acquisition process described above.

By the way, if it is determined that the additional sound mode is selected (the register MODE is not "00" in hexadecimal) in the above-mentioned additional sound mode, the fourth
Proceeding to the subroutine shown in the figure, if possible, write the additional key data, and if possible, write the buffer register BP-
Put 1 into 0 and BF-1. And register B F'
After outputting the additional key data of -Q and 13F-1 to the iUK sound interface 22, the process returns to the scanning and information acquisition process described above.

Next, referring to FIG. 4, the entire processing flow of the subroutine for forming additional sounds will be explained.

First, roOJk'! in buffer registers BP-0 and BF-1 with 16 runs! ) and clear the same register. Then, by checking whether the flag LKAKO is "00" in hexadecimal, it is determined whether all keys of LK are off, and if YES, it is impossible to form additional tones, so the process ends.

Ushita, if LK all mystery is not off, flag UKAKO
Check to see if it is "00" in hexadecimal and determine whether all keys of UK are off. If it is YES, it is impossible to form an additional sound, so the process ends. In this way, if additionality cannot be formed because all LK keys are off or all OK W keys are off, buffer registers BP-0 and BF
Since -1 is cleared to 1, no sound is generated.

Assuming that all keys in -CXLK and σ are not turned off, the key number data of the [JK lowest note] is written from the key number register MPLL to the A register included in the central processing unit [10. This l, determine which range the UK lowest note falls into, and then move to a-+: where you can select different sound intervals for each range depending on the size of the range, or move to the sound interval value for each range. is predetermined as shown in the table below.

Here, the first interval value indicates the musical interval between the UK lowest interval and the first interval value, and the second interval value indicates the interval between the first interval value and the first interval value.
This indicates the interval between the notes of the song and the second additional note.

In the case of a regional publication, first, determine whether the lowest note in σ is above Ii'5 by the key number of 1i1J or P' in the A register. If the published viscous rice is YES Y, the range is from 05 to C7, so the interval data for at least 7 sessions is written in the registers 1NT1 and INT2. Also, if the judgment result is No N, the value of the A register is E4, which is the value of the other two areas.
You can determine whether the lowest note of υUK is higher than 124 by reading it. As a result of the calculation, if the answer is Yes Y, the range is F4 to F5, so register NTI contains note interval data indicating 7, and register NT2 contains all note interval data indicating 3. Also, if the judgment result is No N'''C, it is the range of 02 to E4, so register 1
Write the three-tone interval data to both NT1 and INT2.

To write such tone interval data, subtract the register NTl0 value from the value of the A register. This is to make the first additional note lower than the UK lowest note by the value of the register NT1.

Next, it is checked whether the content of the A register of the subtraction XI is negative or 0 to determine whether it is outside the UK key range. As a result of this determination, if the key is outside the UK key range, additional tones cannot be formed, so no additional tones are generated, as described above.

The contents of the A register are transferred to the iY register by the doctor.

This Y register σ is provided in the central processing unit [10/
) is a thing. After this, UKIIl as shown in Figure 2.
Address value LADilc at the boundary between ll and LK141I
LK key data registers (LKKDl, LKKD5) that extract the address corresponding to the value of the Y register
1) to the A register.

Next, check the least significant bit of the A register and find the pitch name l3II.
It is determined whether the continuous flag NF' is '1'. As a result, no N
Then, subtract 1 from the value of the Fi'Y register to make the address all 1.
Change the key to the bass side. Then, it is checked whether the content of the Y register is negative or 0 to determine whether it is out of the key range, and if it is no N, the process returns to the LK key data import process as described above, and the note name related flag Np1=*l// is discovered. Repeat the same operation until the Incidentally, if the result of determining whether the key is outside the key range after subtracting 1 from the value of the Y register is YES Y, the process ends as an additional tone cannot be formed, as described above.

On the other hand, if it is assumed that the pitch name related flag NF is determined to be altt or not, the key number data '(f-V) is written from the Y register to the buffer register BP-Q. The number data becomes additional sound key data for the first sound.

Next, the contents of the Y register were moved to the A register (17)
, r Subtract the value of register NT2 from the value of LA register.

This is done in order to make the second additional tone lower than the first additional tone by 110 of the register INT2. Thereafter, it is determined whether the key is outside the key range in the same manner as described above, and if no, the contents of the A register are transferred to the iY register. Then, in the same request as mentioned above, all LK key data is imported into the A register, the note name related flag NF is set from the town, and if the import is no N, one value is subtracted from the value of the Y register, and then If it is determined that it is out of the key range and the result is NO, return to the LK key data import process and 1llllll
Repeat the same movements until '='1〃 is completed.

On the other hand, if the note name related flag NF is 11”, it is determined as YES.
Then, write the key number booter from the Y register to the buffer register EF-1. At this time, BP
The key number data that is 1 in -1 or the 2nd edition sound key data will be available.

The buffer registers B y -0 and E are constructed by E above.
The additional sound key data written in F'-1 is 14 in Figure 3.
UJ4 "I1q" by adding key data th force processing
(1B) Since it is supplied to the interface n, the 1-n generator 32 generates all the sound signals corresponding to the sound key data added to the sound signals corresponding to the key presses in the UK as UK sound signals. do.

According to the actual h11-i example above, the pitch interval to be set in register NT1 and register NT2 changes depending on which character structure the UK lowest note is placed in, so for example, whether it is the UK lowest note or the low note from C2 to E4. In the case of a tone in the range, a first additional note is generated which is three keys lower than the UK low pitch, and a second additional note which is three keys lower than the first additional note is generated. However, in this case, it goes without saying that the "A" lung sound, which is outside the key range, will not be generated. Also, UKka, bass is F4~F
- When decoying in the midrange, a first additional note that is 7 keys lower than the UK low neck and a second additional note that is 3 keys lower than the first additional note are generated. . In addition, the lowest UK chant is 0.
5 to G7, the first additional note is 7 keys lower than the UK lowest note, and the first additional note is 7 keys lower than the UK lowest note.
The second addition, which is lower by the key, is also generated.

In the above embodiment, 3 semitones and 7 semitones are used as the tone interval, but other values such as 5 semitones may also be used.

Furthermore, the line spacing may be varied depending on the tone color. moreover,
The keyboard is not limited to a two-level keyboard, but may be one in which a single-level keyboard is divided into a melodic key area and an accompaniment key area.

As described above, according to the present invention, the #r11 interval between the melody sound and the above sound is varied depending on the range to which the melody sound belongs, and in the overlapping region, the above sound is attached to a slightly oven-like sound, and the sound is low. Since the sound was completed and the addition was heard in a slightly close manner, a sufficiently beautiful Tsukumony can be obtained in the entire range.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of an electronic musical instrument according to an embodiment of the present invention, Fig. 2 is a diagram showing the register arrangement in the working area, Fig. 3 is a flowchart of the main routine, and Fig. 4 is an additional sound 3 is a flowchart of a subroutine for formation. 10...Central processing unit, upper keyboard, 3o...J keyboard, :32...Tone generator for upper keyboard, 38.
...Tone generator for lower keyboard, MS...Phrase upper tone mode switch, BF-0, BF-11...Buffer register for additional tone key data, Engineering NTl, Engineering NT2...
- Interval data register. Applicant Nippon Musical Instruments Manufacturing Co., Ltd. Agent Patent Attorney Toshiaki Izawa (21)

Claims (1)

[Claims] 1. A first key range for the melody, a second key range for the accompaniment, and a key range related in pitch to the riddle pressed in the first riddle range, and the second!
l! data generating means for generating additional note key data related by note name to the key pressed in the first key area; In an electronic musical instrument, the electronic musical instrument is provided with a musical tone forming means for forming an additional tone according to data, and a hand board for determining to which range the key pressed in the first key range belongs; A specifying means is provided for instructing the note interval between the key pressed in the first key range and the additional sound key data to be a different note interval for each note range, 1. The additional tone key data is generated so that the tone indicates a specified tone interval with respect to the musical tone.
) An electronic musical instrument characterized by the following. 2. In the electronic musical instrument according to claim 1,
The data generating means generates first additional tone key data having a lower pitch than the key pressed in the first key range, and second additional tone key data having a lower pitch than the first additional tone key data. The designating means determines the first note interval of the song between the key pressed in the first key range and the deleted first additional note key data, and the first additional note key data. The electronic musical instrument is characterized in that a second tone interval profile between the second additional tone key data and the second note key data is specified.