JP2598634B2 - Electronic musical instrument - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention has a plurality of timbre sequences including a melody portion and a timbre sequence that can be a harmony portion, and generates a pitch frequency of a generated tone according to the timbre sequence. The present invention relates to an electronic musical instrument that can be set to a rhythm.

[Conventional technology]

2. Description of the Related Art In an electronic musical instrument represented by a keyboard musical instrument such as an electronic organ and a synthesizer, it is necessary to generate a musical tone signal having a pitch frequency corresponding to a keyboard to be operated. Various methods have been considered for this tone signal generation method.

First, the so-called "independent oscillation system" is a system in which a plurality of original oscillators corresponding to a keyboard or the like are used and the pitch of each keyboard is separately tuned. However, this method involves a difficult tuning operation as in the case of a conventional natural instrument such as a piano or a harpsichord, and has a drawback that the pitch between octaves tends to be out of order.

Next, the so-called "division method" is used for the highest frequency range.
Using a 12-tone independent oscillator, the octave relationship below that
This method uses a 1/2 frequency divider. However, this method also requires tuning over 12 notes,
There is a disadvantage that tuning is required again every time the environment changes such as temperature, humidity, and aging.

Next, the so-called "top octave method" is a method using a group of frequency dividers that approximately gives a frequency of 12 tones from a main clock oscillator as a reference. However, this method has a disadvantage that a very high main clock frequency must be changed during transposition.

Next, the so-called "program counter method" is a method in which a pitch is given as the frequency division ratio data using a programmable frequency divider. According to this method, an arbitrary pitch can be given as the frequency division ratio data according to the bit precision, so that the pitch frequency can be easily digitally controlled.

Next, the so-called "frequency number method" is a method of generating pitch frequency data (a value obtained by adding and accumulating frequency numbers) by an addition accumulator that periodically adds and accumulates incremental value data called a frequency number. It is. According to this method, the pitch frequencies of a plurality of sounding channels can be simultaneously sounded by a single circuit by digital time-sharing operation, and the frequency numbers are digitally processed to realize real-time operation. A feature that cannot be obtained by other methods, that is, an operation function can be obtained.

The above-mentioned "frequency number system" is realized by digital electronic circuit technology typified by recent LSI technology, and is a system which can sufficiently meet musical requirements in terms of pitch setting accuracy. For example, the pitch setting precision of a digital electronic musical instrument can be easily fixed to an error of about one cent. Therefore, in consideration of the fact that the "semitone" is 100 cents and the human musical interval discrimination ability limit is several cents, the "frequency number system" sufficiently exceeds the pitch setting accuracy and the pitch holding stability of the conventional musical instrument. It has the ability and can easily realize the accurate setting of the pitch difference of one cent to several cents necessary for the proper use of the "temperament" that is required musically by an expert. By digitally controlling the correspondence between the frequency number and the keyboard, it is possible to instantaneously transpose to an arbitrary key and generate a musical tone, but this is hardly possible with conventional musical instruments. It was.

[Problems to be solved by the invention]

As described above, accurate pitches are easily given by electronic musical instruments, and in some cases classical tones that are different from 12-element equal temperament are expressed. A series of tones can now be generated simultaneously. However, there is still a large gap between the performance of not only classical music based on the classical temperament but also the performance of a classical orchestra composed of multiple types of natural musical instruments and the performance of an electronic musical instrument having a plurality of tone sequences. It is a fact.

One of the causes is that the scale of each orchestral natural musical instrument is different from the 12-element equal temperament, some instruments are close to just intonation, and some instruments are close to Pythagorean temperament. It is a well-known fact that an electronic musical instrument equipped with a musical instrument cannot obtain a profound sound close to an ensemble of a plurality of types of natural musical instruments due to these subtle differences in pitch.

Therefore, in a conventional electronic musical instrument, in order to cause this pitch variation to be artificially generated throughout, the orchestra effect is periodically performed using a delay element such as a BBD.
Has been added. However, the “subtle differences in pitch between individual instruments” is an additional operation after the common temperament and pitch are determined, and has the disadvantage that it cannot be said to mimic the essence of the rich sound of the orchestra. Was.

The present invention has been made in order to solve the above-described problems, and has a characteristic of the temperament characteristic of each musical instrument group belonging to one timbre series, which is one of the "subtle differences in pitch between individual musical instruments". By focusing on the differences and setting different different tones according to the timbre series of musical tones that occur, it is possible to generate a sound closer to an ensemble of multiple types of natural musical instruments and effectively express multiple timbre series It provides rich electronic musical instruments.

Another object of the present invention is to provide an electronic musical instrument capable of stably obtaining a musical tone having a pitch frequency based on a rhythm set in accordance with a tone color series with high precision by digital processing.

It is another object of the present invention to provide an electronic musical instrument capable of instantaneously and easily changing the temperament even during a performance.

[Means for solving the problem]

In order to solve the above-described problems, the present invention provides an electronic musical instrument including a plurality of tone sequences including a tone sequence that can be a melody part and a harmony part. A part of a plurality of tone sequences generated by assigning a plurality of tones to one key and performing a key operation is defined as a melody part, and another part is defined as a harmony part, and Performance state setting means (40, 10,...) For generating setting data for setting the tone of the musical tone generated from the melody part and the harmony part to different different tones according to the timbre series related to the melody part. 20, 21), pitch data detecting means (4) for obtaining pitch data corresponding to keys played on the keyboard, and pitch data corresponding to pitch frequencies based on a plurality of tones. A frequency number storage means (22) storing several numbers for each temperament, and an address signal formed based on the pitch data and the setting data, the pitch frequency of a tone generated from the frequency number storage means. Reading means (30, 31, 32) for reading a frequency number corresponding to the time-division, and a sound for generating pitch frequency data in a time-sharing manner by adding and accumulating the frequency numbers read by the reading means. High-frequency data generating means (6), based on the pitch-frequency data, simultaneously perform tone-frequency tones of pitch frequencies based on different different tones corresponding to tone sequences related to the melody section and the harmony section by time-division processing. And a tone generating means (8) for generating a tone.

[Action]

According to the present invention, it is possible to simultaneously generate, by time-division processing, musical tones of pitch frequencies based on different different tones corresponding to the melody part and the timbre series relating to the harmony part. A sound closer to the ensemble can be generated, and a plurality of tone sequences can be effectively represented.

〔Example〕

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a conceptual diagram illustrating the configuration of an electronic musical instrument according to the present invention, wherein 1 is a tone tablet, 2 is a keyboard, 3 is a tone setting circuit, 4 is a state detection / processing operation circuit,
Reference numeral 5 denotes a tone color data generation circuit, 6 denotes a pitch frequency data generation circuit (pitch frequency data generation means), 7 denotes an envelope data generation circuit, 8 denotes a tone generation circuit (tone generation means), 9
Is a sound system.

In FIG. 1, a state detection / processing operation circuit 4 constituting a pitch data detecting means and the like includes a tone setting state in the tone tablet 1, a playing state such as a key press and a key release on the keyboard 2,
The tone setting circuit 3 detects the tone that has been set and input according to the tone color setting state / performance state information and the like. further,
The state detection / processing operation circuit 4 stores a timbre parameter signal a required for the timbre data generation circuit 5 and a frequency number required for the pitch frequency data generation circuit 6 in a frequency number table circuit (frequency number storage means: FIG. 1). Is not shown)
, An address signal b for reading from the data, an envelope parameter signal c necessary for the envelope data generation circuit 7,
And generates and supplies a tone generation parameter signal.

The musical tone generating circuit 8 generates musical tones based on musical tone generating data such as tone color data d from the tone color data generating circuit 5, pitch frequency data e from the pitch frequency data generating circuit 6, and envelope data f from the envelope data generating circuit 7. Generates a signal (musical sound). The tone signal is converted into sound by a sound system 9 including an amplifier and a speaker, and is emitted as a player of the electronic musical instrument.

FIG. 2 is a specific configuration example for explaining an example of a tone color setting portion realized around the state detection / processing operation circuit 4, tone color data generation circuit 5, and tone generation circuit 8 shown in FIG.

In FIG. 2, reference numeral 10 denotes a CPU, 11 denotes a timbre characteristic data memory circuit, 12 denotes a RAM, 13 denotes a ROM, 14 denotes a system bus, 16 denotes a harmonic table circuit, and 17 denotes a time-division timing circuit.
Here, the CPU 10, the tone characteristic data memory circuit 11, the RAM 12,
The ROM 13 and the system bus 14 detect the state
It is included in the processing operation circuit 4. In this example, the tone generation circuit 8 generates a tone by a sine synthesis method according to the timing of the time division timing circuit 17, and the tone color data generation circuit 5 sets the intensity of each overtone for that purpose. The CPU 10 controls the entire circuit, and stores data in the RAM 1 via a system bus 14 including an address bus and a data bus.
2. Operates with the ROM 13 in which programs and data are stored.

The timbre information set by the timbre tablet 1 is
The value is taken into the system bus 14 by 0, and the necessary tone color parameters are referred to by the tone color characteristic data memory circuit 11 and supplied to the tone color data generation circuit 5 as a tone color parameter signal a.

The state of the tone parameter signal a is shown in FIG.
FIG. 4 is a signal diagram of the figure. When a characteristic such as that shown in FIG. 3A is set as a tone color parameter signal a, such characteristic curve data is actually transferred or such a characteristic can be obtained. Such a table reference address signal is transferred. In the case of the sine synthesizing method as in this example, the timbre data generating circuit 5 uses the harmonic table circuit 16 storing the basic data corresponding to each harmonic component to generate the discrete data as shown in FIG. , And the tone generation circuit 8 calculates each harmonic component in a time-division manner in accordance with the timing of the time-division timing circuit 17.
In the case of an electronic musical instrument of a so-called "subtraction method" as a tone generation method, that is, a method of setting a tone by an original waveform rich in harmonics and a filter circuit, cut-off frequency, Q characteristic, filter Attenuation characteristics etc. correspond, and the tone color data is VCF
(Voltage control filter) corresponds to the control voltage, and SCF (switched, capacitor, filter) corresponds to the control clock signal and the like. In the present invention, it is obvious that any of these methods can be easily applied. is there.

FIG. 4 shows the state detection / processing operation circuit 4 shown in FIG.
6 is a specific configuration example for explaining an example of a pitch frequency setting portion realized around the pitch frequency data generation circuit 6 and the musical tone generation circuit 8.

In FIG. 4, 3 is a tone setting circuit, 10 is a CPU, and 12 is R
AM, 13 are a ROM, 14 is a system bus, 20 is a tone characteristic data memory circuit, 21 is a tone selection circuit, and 22 is a frequency number table circuit. Here, the CPU 10, the temperament characteristic data memory circuit 20, the temperament selection circuit 21, the RAM 12, the ROM 13, and the system bus 14 are included in the state detection / processing operation circuit 4 shown in FIG. In this example, the tone generator 8 generates a tone based on the pitch frequency data from the pitch frequency data generator 6. As a method for forming pitch frequency data, a "program counter method" in which programmable frequency-divided data is generated by the pitch frequency data generation circuit 6 or a pitch frequency is supported by the pitch frequency data generation circuit 6 A system such as a so-called “frequency number system” that generates frequency numbers (increment value data) and periodically adds and accumulates them is conceivable.

The example of FIG. 4 is a specific example using the “frequency number system”. In this case, the frequency number table circuit
Reference numeral 22 is arranged between the state detection / processing operation circuit 4 and the pitch frequency data generation circuit 6 shown in FIG. However, the first
The figure only shows the outline of the configuration of the electronic musical instrument,
In FIG. 1, the illustration of the frequency number table circuit 22 is omitted. The CPU 10 controls the entire circuit, and includes a system bus including an address bus, a data bus, and the like.
It operates together with the RAM 12 for storing data and the like and the ROM 13 for storing programs and data via the medium 14.

FIG. 5 is a memory signal diagram for explaining the operation of the high frequency setting portion of the conventional electronic musical instrument corresponding to the specific configuration example shown in FIG. In a conventional electronic musical instrument, the fifth
The memory configuration shown in the figure was common. Explaining in correspondence with the operation of the specific configuration example shown in FIG. 4, the operation state of the keyboard 2 is taken into the system bus 14 by the CPU 10,
The pitch frequency data is supplied to the pitch frequency data generation circuit 6 as necessary pitch information. At this time, the frequency number table circuit 22 simply accesses data of an address corresponding to the key number corresponding to the order of the keyboard as shown in FIG. It was a suitable method when using temperament.

FIG. 6 is a memory signal diagram in a data memory circuit (not shown) stored in the frequency number table circuit 22 for explaining the operation of the pitch frequency setting portion in the specific configuration example shown in FIG. This is an example. Explaining in correspondence with the operation of the specific configuration example shown in FIG. 4, the operation state of the keyboard 2 is taken into the system bus 14 by the CPU 10, the tone setting information of the tone tablet 1 and the tone setting information of the tone setting circuit 3 Is also taken into the system bus 14.

According to the gist of the present invention, an address signal for reading out the frequency number stored in the frequency number table circuit 22 is supplied and output from the tone selection circuit 21 to the frequency number table circuit 22. Here, as will be described in detail later, the address signal is data generated by the state detection / processing operation circuit 4 and corresponding to the pitch data corresponding to the key played on the keyboard 2 and the pitch setting circuit 3 and the like. Based on the generated data and the setting data for setting the tune of the generated musical tone to different tunes respectively corresponding to the timbre series, the CPU 10 and the tune characteristic data memory circuit 20
And the signal formed in the temperament selection circuit 21.

In the frequency number table circuit 22, as shown in FIG. 6, the frequency numbers (1000 to 1060, 1100 to 1160,.
…, 1900 to 1960) are arranged for each temperament block and correspond to the key order (Key No. 1 to Key No. 6).
1) are stored separately (that is, stored for each temperament). The address signal is for reading out the pitch number of the generated musical tone or the corresponding frequency number from the frequency number table circuit 22 in a time-division manner and accessing the address signal. With such a configuration of the frequency number table circuit 22, it is possible to easily realize memory expansion in units of temperament.

FIG. 7 is a configuration example of a pitch frequency setting portion in the specific configuration example shown in FIG. 4 for generating the address signal corresponding to FIG. In FIG. 7, 10 is CP
U and 14 are system buses. 30 is the block selection circuit, 3
1 is a tone selection address circuit, and 32 is a key number selection circuit. The block selection circuit 30, the tone selection address circuit 31, and the key number selection circuit 32 constitute the tone selection circuit 21 shown in FIG. Reference numeral 22 denotes a frequency number table circuit.

Here, the CPU 10 sends a control signal g for selecting a desired data block from a data memory circuit (not shown) included in the frequency number table circuit 22 to a block selection circuit.
Supply 30. The block selection circuit 30 converts the chip select signal and the upper address signal j for each data memory circuit included in the frequency number table circuit 22 formed based on the control signal g into the frequency number table circuit 22.
Supply output.

Further, the CPU 10 outputs a control signal h for selecting a desired temperament block <1> to <10> from the frequency number table circuit 22 to the setting data (the temperament of the generated tone generated in the temperament setting circuit 3 or the like). (Data for setting different and different tones in accordance with the tone color series) to the tone selection address circuit 31. The temperament selection address circuit 31 supplies and outputs a middle-order address signal m formed based on the control signal h to the frequency number table circuit 22.

Further, the CPU 10 sends a control signal i for selecting a frequency number corresponding to a desired key number from the frequency number table circuit 22 to the pitch data (played on the keyboard 2 generated by the state detection / processing operation circuit 4). The data is supplied to the key number selection circuit 32 based on the data corresponding to the key).
The key number selection circuit 32 converts the lower address signal n formed based on the control signal i into the frequency number table circuit 22.
Supply output.

In this case, as is clear from the example of the memory signal diagram shown in FIG. 6, in order to change the tune of a certain timbre series, the middle address signal m output from the tune selection address circuit 31 may be changed. . This is instantaneous CP even while playing
It can be easily implemented by U10. Also, when performing tone waveform synthesis in a time-division manner as described above, the tone parameter is referred to for each corresponding time-division time slot,
It is also easy to generate corresponding different temperament selection signals.

FIG. 8 is another memory in a data memory circuit (not shown) stored in the frequency number table circuit 22 for explaining the operation of the pitch frequency setting section in the specific configuration example shown in FIG. It is an example of a signal diagram. Explaining in correspondence with the operation of the specific configuration example shown in FIG. 4, the operation state of the keyboard 2 is taken into the system bus 14 by the CPU 10,
Further, the tone color setting information of the tone color tablet 1 and the tone rule setting information of the tone rule setting circuit 3 are also taken into the system bus 14.

According to the gist of the present invention, the address signal for reading out the frequency number stored in the frequency number table circuit 22 is supplied and outputted from the tone selection circuit 21 to the frequency number table circuit 22.

In the frequency number table circuit 22, as shown in FIG. 8, the frequency numbers (1000 to 1009, 101 to 1019,...
…, 1600-1609) is the key number (Key No.1 ~ Key No.
61) Temperament <1> ~ which is arranged for each and corresponds to the same pitch
It is stored separately according to <10> (that is, stored for each temperament). The address signal is for accessing a frequency number corresponding to a pitch frequency of a generated musical tone in a time-division manner from the frequency number table circuit 22 for access. With such a configuration of the frequency number table circuit 22, an efficient data storage method can be easily realized.

FIG. 9 is another configuration example of the pitch frequency setting portion in the specific configuration example shown in FIG. 4 for generating the address signal corresponding to FIG. In FIG. 9, 10
Is a CPU and 14 is a system bus. Reference numeral 30 denotes a block selection circuit, 31 denotes a tone selection address circuit, and 32 denotes a key number selection circuit. The block selection circuit 30, the tone selection address circuit 31, and the key number selection circuit 32 constitute the tone selection circuit 21 shown in FIG. Reference numeral 22 denotes a frequency number table circuit.

Here, the CPU 10 sends a control signal g for selecting a desired data block from a data memory circuit (not shown) included in the frequency number table circuit 22 to a block selection circuit.
Supply 30. The block selection circuit 30 converts the chip select signal and the upper address signal p for each data memory circuit included in the frequency number table circuit 22 formed based on the control signal g into the frequency number table circuit 22.
Supply output.

Further, the CPU 10 outputs a control signal h for selecting a desired temperament block <1> to <10> from the frequency number table circuit 22 to the setting data (the temperament of the generated tone generated in the temperament setting circuit 3 or the like). (Data for setting different and different tones in accordance with the tone color series) to the tone selection address circuit 31. The temperament selection address circuit 31 supplies and outputs the lower address signal q formed based on the control signal h to the frequency number table circuit 22.

Further, the CPU 10 sends a control signal i for selecting a frequency number corresponding to a desired key number from the frequency number table circuit 22 to the pitch data (played on the keyboard 2 generated by the state detection / processing operation circuit 4). The data is supplied to the key number selection circuit 32 based on the data corresponding to the key).
The key number selection circuit 32 converts the middle address signal r formed based on the control signal i into a frequency number table circuit 22.
Supply output.

In this case, as is apparent from the example of the memory signal diagram shown in FIG. 8, in order to change the tune of a certain timbre series, the lower address signal q output from the tune selection address circuit 31 may be changed. This is instantaneous CP even while playing
It can be easily implemented by U10. Also, when performing tone waveform synthesis in a time-division manner as described above, the tone parameter is referred to for each corresponding time-division time slot,
It is also easy to generate corresponding different temperament selection signals.

FIG. 10 shows the state detection / processing operation circuit 4 shown in FIG.
9 is a specific configuration example for explaining another example of the pitch frequency setting portion according to the present invention implemented around the pitch frequency data generation circuit 6 and the tone generation circuit 8. In FIG. 10, 40 is a performance state setting circuit, 10 is a CPU, 20 is a temperament characteristic data memory circuit, 12 is a RAM, 13 is a ROM, 14 is a system bus, 21 is a temperament selection circuit, and 22 is a frequency number table circuit ( Frequency number storage means). Note that the performance state setting circuit 40, the CPU 10, the temperament characteristic data memory circuit 20, and the temperament selection circuit 21 constitute a performance state setting means of the present invention.

In this specific configuration example, the performance state setting circuit 40
At the time of performance, one of a plurality of keyboards, a part of the range of the keyboard or a plurality of timbres generated by the same keyboard by allocating a plurality of timbres to one key and performing a key operation. Part is defined as the melody part that composes the performance of the melody (melody) line, and the other part is the harmony part that composes the performance of the harmony (accompaniment) line (the part that generates the sound to enrich the sound) And
It is used to set the tone of the musical tone generated from the melody part and the harmony part to different different tones corresponding to the tone colors related to the melody part and the harmony part.

As an example of this performance state, for example, in an electronic organ having a configuration of a two-step keyboard, a three-step keyboard, etc., the upper keyboard is defined as a melody part, a violin tone is designated as the melody tone, and the tone of the violin is often the Pythagorean tone. , The lower keyboard is defined as a harmony part, a pipe organ timbre is designated as the harmony tone, and the tone of the tone is set to pure intonation.

As another example of a playing state, for example, in a synthesizer in which the range can be divided into a single-step keyboard and a sound area can be substantially formed into a two-step keyboard, a high range is defined as a melody part, and a trumpet tone is designated as a melody tone. It is also conceivable that the temperament is set to the Pythagorean temperament common to trumpets, the low range is defined as a harmony part, the jazz organ timbre is specified as the harmony tone, and the temperament is set to the Bergmeister temperament.

As still another example of a performance state, for example, a plurality of timbres of a plurality of timbres are assigned to one key, and a plurality of timbres are simultaneously generated by operating one key. When the performance of a series can be performed, a certain timbre series is defined as a melody part, its tune is set to a melody tone's own tune, and another timbre series is defined as a harmony part, and the tune is defined as a harmony part. There may be a case where the tone is set to a unique tone.

〔The invention's effect〕

As described above, according to the present invention, it is possible to generate pitch-tone musical tones based on different timbres respectively corresponding to the melody part and the harmony part of the timbre series. It is possible to provide an electronic musical instrument rich in musicality that can express a sound closer to an ensemble.

In addition, since the apparatus is provided with frequency number storage means for storing frequency numbers corresponding to pitch frequencies based on a plurality of tones, digital processing can be performed, and based on the tones set according to the timbre series. A tone with a pitch frequency can be obtained with high accuracy and stability.

Further, since the frequency number storage means stores the frequency numbers corresponding to the pitch frequencies based on a plurality of temperaments for each temperament, the temperament can be instantaneously and easily changed even during the performance.

In addition, since pitch-tone musical tones based on different timbres corresponding to the melody part and the harmony part of the harmony part can be simultaneously generated by time-division processing, a performance similar to an ensemble of a plurality of types of natural musical instruments can be performed. The effect can be obtained.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram illustrating the configuration of an electronic musical instrument according to the present invention. FIG. 2 is a diagram showing a specific configuration example of a tone color setting portion in the electronic musical instrument shown in FIG. FIG. 3 is a signal diagram of a tone color parameter signal. FIG. 4 is a diagram showing a specific configuration example of a pitch frequency setting portion in the electronic musical instrument shown in FIG. FIG. 5 is a memory signal diagram of a frequency number of a conventional electronic musical instrument. FIG. 6 is a memory signal diagram of a frequency number according to the present invention. FIG. 7 is a diagram showing a configuration example for generating an address signal corresponding to FIG. FIG. 8 is another memory signal diagram of a frequency number according to the present invention. FIG. 9 is a diagram showing a configuration example for generating an address signal corresponding to FIG. FIG. 10 is a diagram showing another specific configuration example of the pitch frequency setting portion in the electronic musical instrument shown in FIG. [Description of Signs] 1... Tone tablet 2... Keyboard 3... Tone regulation circuit 4... State detection and processing operation circuit 5... Tone color data generation circuit 6. 7 Envelope data generation circuit 8 Music tone generation circuit 9 Sound system 10 CPU 11 Memory color characteristic data memory circuit 12 RAM 13 ROM 13 14 System Bus, 16 harmonic table circuit, 17 time-division timing circuit, 20 temperament characteristic data memory circuit, 21 temperament selection circuit, 22 frequency frequency table circuit, 30 block selection circuit, 31 ...... Temperature selection address circuit, 32 ... Key number selection circuit, 40 ... Play state setting circuit.

Continuation of front page (56) References JP-A-53-49420 (JP, A) JP-A-57-23999 (JP, A) JP-A-59-102290 (JP, A) JP-A-49-130213 (JP, A) , A) Japanese Utility Model Showa 58-138994 (JP, U) Japanese Utility Model Showa 58-54695 (JP, U)

Claims (1)

(57) [Claims] An electronic musical instrument comprising a plurality of tone sequences including a tone sequence that can be a melody part and a harmony part, wherein a plurality of tones are provided for a part of a plurality of keys, a part of a range of a keyboard or one key. , A part of a plurality of tone sequences generated by performing a key operation is defined as a melody part and another part is defined as a harmony part, and
Performance state setting means (40, 40) for generating setting data for setting the tone of a musical tone generated from the melody part and the harmony part to different different tones depending on the tone colors of the melody part and the harmony part.
10, 20, 21), pitch data detecting means (4) for obtaining pitch data corresponding to keys played on the keyboard, and frequency numbers corresponding to pitch frequencies based on a plurality of temperaments. Frequency number storage means (2
2) and reading means (30) for reading out the frequency number corresponding to the pitch frequency of the musical tone to be generated from the frequency number storage means in a time-sharing manner, based on the address signal formed based on the pitch data and the setting data. , 31, 32); pitch frequency data generating means (6) for generating pitch frequency data in a time-division manner by adding and accumulating the frequency numbers read by the reading means; A musical tone generating means (8) for simultaneously generating musical tones of pitch frequencies based on different timbres based on different timbres according to the melody part and the harmony part based on the data by time division processing. An electronic musical instrument characterized by that: