JPS60153093A - Compound sound 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] [Industrial Application Field] The present invention relates to a polyphonic electronic musical instrument that can subtly change and control musical sound characteristics such as pitch, timbre, and volume during performance. By controlling musical tone characteristics for one or more specific tones, new playing techniques are made possible.

[Prior art]

Conventionally, while playing an electronic musical instrument, by operating the pitch ind controller, the pitch of the generated acrylic note was subtly changed δ
It is known that pitch India effects can be obtained by using
(See Publication No. 298, etc.). Although these known pitch bend imparting means are primarily intended for single-tone electronic musical instruments, they can also be applied to multi-tone electronic musical instruments.

By the way, a so-called polyphonic synthesizer is known as a multitone electronic musical instrument that can produce a pitch bend effect, and in this synthesizer, when the pitch ind controller is operated, all sounds being produced are adjusted according to the amount of the pitch bend control. The pitch of the sound is controlled to change uniformly, so it is impossible to perform the playing technique of bending only one string and not bending the other strings, as seen when playing an electric guitar, for example. there were.

Here, choking is a technique in which, after pinking, the string is pressed up or pulled down to make a pinch change, and is also called knding.

[Purpose of the invention]

An object of the present invention is to provide a novel multitone electronic musical instrument that can change and control musical tone characteristics such as pitch, timbre, volume, etc. of one or more specific tones out of a plurality of tones that are generated simultaneously.

[Structure and operation of the invention]

The multitone electronic system device according to the present invention includes a keyboard means, a musical tone generation means that simultaneously generates a plurality of musical tones based on key press operations on the keyboard means, and an operator such as a pitch bend operator to be operated during performance. control information generating means for generating control information for controlling the musical tone characteristics of the pitch based on the operation of the operator; The present invention includes a specific tone specifying means for specifying a specified tone, and a control means for performing musical tone characteristic control according to control information regarding the musical tone specified by the specific tone specifying means.

With this configuration, it is possible to change the pitch of, for example, only the lowest note among the plurality of notes being produced,
This enables a new playing method similar to the homophonic and different string playing method of an electric guitar.

[First Embodiment] FIG. 1 shows a sound collection IK child instrument according to a first embodiment of the present invention. This electronic musical instrument generates multiple musical tones simultaneously through time-sharing musical tone signal formation processing. It is now possible to do so.

The keyboard circuit 10 includes a keyboard having a large number of keys, and a large number of key switches each driven by a large number of keys of the keyboard.

The key assigner 12 is for detecting a pressed key by sequentially and repeatedly scanning a large number of key switches in the keyboard circuit 10. When a pressed key is detected, the key assigner 12 generates key press information regarding that key. It is designed to be assigned to a specific channel among a plurality of time-sharing channels (for example, 8), which is much smaller than the number of keys.Key press information is assigned to each key to identify the pressed key. key code signal K defined in
C and a key-on signal KON indicating whether a key has been pressed are used, and the key code signal KC and key-on signal KON regarding a certain key being pressed are simultaneously sent out from the key assigner 12 at the timing of a specific assigned channel. ,Also,
When multiple keys below the number of channels are pressed, the key code signal KC and key-on signal KON for those multiple keys are pressed.
The frequency number memory 14, which is sent out from the key assigner 12 in a time-divisional manner, stores frequency number data determined for each of the six keys (each note to be generated) on the keyboard, and receives the key code signal KC. Each time, the corresponding frequency number data is supplied to the multiplier 16.

The lowest pitch detection circuit 18 is for detecting the key with the lowest pitch when multiple keys are depressed, and is for detecting the key with the lowest pitch among the keys whose key-on signal KON is 'l' (channels with key depression). The channel in which the value of the key code signal KC is the lowest (smallest) is detected, and the selection control signal S is supplied in addition to the output signal "1" at the timing of the detected channel. Note that if only one key is pressed, that one key is treated as the lowest matching key.

The selector input selects the input when the selection control signal S is 1", and selects the input BY when the selection control signal S is 0", and the input A is the pinch bend data PD from the pitch India operation circuit n. is supplied, and data representing the numerical value 1-JJv is supplied as input B.

The pitch bend operation circuit 22 includes, for example, a voltage divider circuit having a variable resistor whose resistance value changes according to the operation of a pitch bend operator, and a digital signal that outputs a voltage corresponding to the change in resistance of the voltage divider circuit. The digital output of this A/D conversion circuit is sent out as pitch India data PD. It should be noted that the pitch India operation circuit η may have various configurations, such as a type that allows the variable width of the pinch India to be set arbitrarily (an example of this is disclosed in the above-mentioned Japanese Patent Laid-Open No. 56-74298). (as shown in the publication)2
May be adopted.

In the multiplier 16, the frequency number data F from the frequency number memory 14 is multiplied by the output data of the selector. The selector input selects and sends out the pitch indide mark PDY from the pinch 4-nd operation circuit n at the timing of the channel where the lowest match key is detected, and selects and sends out the data Z indicating the numerical value Fil 'i at the timing of other channels. Frequency number data F corresponding to the duplicate key
Only the pinch India data PD is multiplied by the pinch India data PD, and the other frequency number data F is multiplied by rlJ. As a result, the value of the frequency number data F' corresponding to the lowest match key output from the multiplier 16 changes over time in accordance with the pitch India data PD, and the values of the other frequency number data F' do not change at all. I will not do it.

The frequency number data F' output from the multiplier 16 is supplied to an accumulator and accumulated for each channel. This accumulation operation is performed periodically such that when the frequency number data F'Y reaches a predetermined maximum value, the same accumulation is repeated from the beginning. Therefore, the length of one cycle of accumulation depends on the value of frequency number data F'. In this case, the frequency number data is set so that the higher the pitch, the larger the value, so the long field of one cycle of accumulation becomes shorter as the pitch gets higher, and therefore the repetition frequency of the accumulation becomes higher as the pitch gets higher. Become.

Accumulated data qF'lr sent from accumulator U
i, the number of accumulations Yci, and the modulo of the accumulator prisoner is N, then l'(qxp') moduloN
The two-tone generator station, which indicates a value J, and whose numerical value increases by F' each time the number of accumulations increases, includes, for example, a waveform memory that stores waveform sample value data for one period of a musical waveform. The musical waveform sample value data is read out from this waveform memory in a time-division manner according to the accumulated data qF'. In this case, since the tone waveform sample value data is read out at a speed corresponding to the repetition frequency of the accumulation described above, the tone waveform sample value data that is sequentially sent out for each channel from the waveform memory is read out for each channel. The pitch (frequency) corresponding to the bowl assigned to that channel will be shown.

The musical sound waveform sample value data of each channel transmitted from the waveform memory in a time-divisional manner is multiplied by predetermined amplitude encoder data that rises in synchronization with the key-on signal KON for each channel. Ru. The musical waveform sample value data of each channel obtained as a result of this multiplication is supplied to the sound system array as a digital musical tone signal.

The digital musical tone signals of each channel supplied to the sound system array are added and synthesized, and then passed through a D/A converter, a power amplifier, etc., and then produced as a musical tone from a speaker.

According to the multitone electronic musical instrument configured as described above, when multiple hands are pressed on the keyboard and the pitch ind operator is operated, pitch bend can be applied only to the lowest note among the multiple sounds corresponding to the pressed multiple hands. . For example, when two tones χ are generated, the pitch of only the low-pitched tone can be omitted, and the final pitch can be made the same as the high-pitched tone, or it can be slightly shifted.

In the first embodiment described above, the pinch ind is applied to the lowest note, but the pinch ind is not limited to this. For example, the highest note, a note other than the lowest note, a note other than the highest note, the highest note, and the lowest note Pitch pendo may be applied to sounds other than sounds (for example, intermediate sounds). Furthermore, musical tone signals for each channel may be formed by parallel processing instead of time-division processing. Further, the method of generating musical tone signals may be not the waveform memory reading method, but may be an arithmetic method, a frequency modulation method, or other methods.

[Second Embodiment] FIG. 2 shows a multitone electronic musical instrument according to a second embodiment of the present invention. Similar parts to those in FIG. Omitted.

The feature of this second embodiment is that a key touch on the keyboard is detected and a pitch ind is assigned to the note with the strongest key touch.

The touch detection circuit is used to detect the initial touch of each key on the keyboard, and the key code signal KC system outputs touch data from the key assigner 12 according to the strength of the initial touch of each pressed key. Accordingly, the signal is time-divided and supplied to the strongest touch detection circuit 32.

The strongest touch detection circuit 32 is for detecting the key with the strongest initial touch when multiple hands are pressed, and the strongest touch detection circuit 32 is for detecting the key with the strongest initial touch among them when multiple hands are pressed. A large channel is detected and supplied to each detected channel as a selection control signal S.If only one key is pressed, that one key is treated as the key with the strongest touch. be exposed.

According to such a configuration, when multiple needles are pressed on the keyboard and the pitch India operation +2 is performed, the pitch India request is applied only to the note with the strongest initial touch among the multiple sounds corresponding to the suppressed multiple needles. I can do it.

Note that in the second embodiment described above, pitch India is added to the note with the strongest initial touch, but aftertouch is detected and pitch India is added to the note with the strongest aftertouch. Good too.

[Third Embodiment] FIG. 3 shows a multitone electronic musical instrument according to a third embodiment of the present invention, and the same parts as in FIG. omitted.

The feature of this third embodiment is that it detects a specific key range of the keyboard,
Pitch indicia is applied only to notes belonging to that specific key range.

The specific key range detection circuit 34 is for detecting @ta belonging to a specific octave based on the octave code signal OC and the key-on signal KON of the key code signal KC consisting of a combination of an octave chord and a note chord. Compare the octave code signal OC with a predetermined specific octave code for the channel where the key-on signal KON is 1'', detect the channel where both match, and select the output signal ``1'' at the timing of the detected channel. In addition, it is supplied as a selection control signal S.

According to this configuration, when a pitch pen operation is performed by simultaneously pressing a key belonging to a specific octave and a key belonging to another octave on the keyboard, the pitch pend operation is performed only on the notes corresponding to the keys belonging to the specific octave. will be granted. Furthermore, when the pinch bend operator is operated by pressing a plurality of needles belonging to a specific octave, a pitch ind is added to each of the plurality of sounds corresponding to the plurality of needles.

Note that the key code signal KCY may be input to the specific key range detection circuit 34 instead of the octave code signal OCO to detect keys belonging to the specific key range.

[Fourth Embodiment] FIG. 4 shows a multitone electronic musical instrument according to a fourth embodiment of the present invention. Similar parts to those in FIG. omitted.

The feature of this fourth embodiment is that the maximum volume sound is detected and pitch bend is applied only to that sound.

An encoder (EG) 36 provided inside the tone generator generates a key-on signal KO for each channel.
In response to N, the amplitude of the digital musical tone signal is increased by 40--j%.
The amplitude envelope data EVy for determining the amplitude w is generated on a time-divisional basis, and while this data EV can be multiplied by the musical waveform sample value data read from the waveform memory as described above, the maximum value detection circuit Between supply and vomiting.

The maximum value detection circuit is designed to detect the loudest sound when multiple sounds can be generated at the same time, and the value of the amplitude envelope data EV is The largest channel is detected, and an output signal "1" is supplied to the selector as a selection control signal S at the timing of the detected channel.

According to such a configuration, when a plurality of needles are pressed on the keyboard and the pinch bend operator is operated, a pitch index is applied only to the loudest sound among the plurality of sounds corresponding to each of the pressed plurality of needles.

[Fifth Embodiment] FIG. 5 shows a multitone electronic musical instrument according to a fifth embodiment of the present invention, in which the same parts as in FIGS. 1, 2, and 4 are designated by the same reference numerals. A detailed explanation will be omitted.

The feature of this fifth embodiment is that when a plurality of tones are generated simultaneously, any one of various pitch indentation modes can be selected.

The pinch India control circuit 40 controls the first to sixth control circuits that are respectively enabled in response to the ON signals of the first to sixth mode selection switches 51=86 in the mode selection switch (SW) circuit 42. These six control circuits have different pitch indentation modes.

In other words, the first control circuit is used to apply pitch bend to all six tones that are generated simultaneously, and when this circuit is enabled, the output signal "1" is applied to the selector at the timing of all channels. It is supplied as a selection control signal S. Therefore, when the first mode selection switch S is turned on, bisochipendo can be applied to each of the plural notes corresponding to the plural needles pressed on the keyboard.

The second control circuit is for applying "pitch bend dry" to the sound with the strongest key touch among multiple sounds occurring simultaneously, and is functionally similar to the strongest touch detection circuit 32 in FIG. Yes, therefore, the second mode selection switch S
2' When turned on, pitch India can be applied only to the note with the strongest key touch among the multiple notes corresponding to the multiple needles pressed on the keyboard.

The third control circuit is for applying a pinch bend to the lowest pitch sound among multiple sounds generated at the same time.
Functionally, it is similar to the lowest tone detection circuit 18 of FIG. Therefore, when the third mode selection switch 83 is turned on, pitch bend can be applied only to the lowest pitch note among the plurality of notes corresponding to the plurality of keys pressed on the keyboard.

The fourth control circuit is for applying pitch bending to the highest pitched note among the plurality of notes generated simultaneously,
Its function is similar to the third control circuit described above, except that it detects the highest tone instead of the lowest tone. Therefore, when the fourth mode selection switch 84 is turned on (7), pinch bento can be applied only to the highest pitched note among the plurality of notes corresponding to the plurality of keys pressed on the keyboard. ' The fifth control circuit is for adding pinch bent tones to sounds in a specific key range, and is functionally similar to the specific key range detection circuit shown in FIG. Therefore, when the fifth mode selection switch 8s'l is turned on, only when a key belonging to a specific key range is pressed on the keyboard, pitch bend can be applied to the sound corresponding to that key.

The sixth control circuit is for applying a pitch bend to the loudest sound among the plurality of sounds generated simultaneously, and is similar to the lowest sound detection circuit of the functional KFi in FIG. Therefore, when the sixth mode selection switch S6't is turned on, pitch bend can be applied only to the loudest sound among the plurality of sounds corresponding to the plurality of keys pressed on the keyboard.

The performer must play the first to sixth moles before or during the performance.
By turning on any one of select, r, and itte s1 to s6 as appropriate, a desired pitch indium imparting mode can be selected, so it is possible to perform a performance with a change KM.

[Sixth Embodiment] FIG. 6 shows a multitone electronic system according to a sixth embodiment of the present invention, in which the same parts as in FIGS. 1 and 2 are given the same reference numerals. A detailed explanation will be omitted.

The first feature of this sixth embodiment is that a variable frequency division method is adopted as the musical tone signal generation method, and the second feature is that the timbre or volume of a specific sound is changed based on the operation of the pend operator. This is to control the situation.

The specific sound detection circuit 44 is for detecting one or more specific keys when a plurality of keys are pressed. Specifically, for example, the lowest sound detection circuit 18 (FIG. 1) described above,
The structure can be similar to the strongest touch detection circuit 32 (FIG. 2) or the specific key range detection circuit 34 (FIG. 3), and if desired, the pitch bending control circuit 40 and mode selection switch circuit 420 can be configured as shown in FIG. It can also be configured as a combination.

The specific sound detection circuit 44 outputs an output signal "l" at the timing of the channel in which one or more specific keys (or sounds) are detected.
The signal is supplied as the tt sector V sector 46 selection control signal S.

When the selection control signal S is '0', the selector 46 selects the base r.
The positive pressure signal O is selectively sent out, while the selection control signal S
When is 1'', the voltage signal VnY for India control from the India operation circuit 48 is selectively sent out.

The bend operation circuit 48 is configured to generate a voltage signal VB for R-end control of the tone or the combined tone based on the operation of the bend operation element.

The frequency division value memory 5Q stores frequency division value data determined for each key on the keyboard, and sends out frequency division value data Di corresponding to the key code signal KC every time it receives the key code signal KC. There is.

The tone generator 52 includes N variable frequency division type tone generators TGl-TGN corresponding to the number of channels iN in the key-a-to-iner 12.Here, as a representative, the tone generator TG1 corresponding to the first channel is included. The structure and function will be explained.

In the tone generator TGl, the launch circuit 52a
is the frequency division value data D from the frequency division value memory and the key retainer 1 according to the timing signal CHI of the first channel.
2 and the voltage signal V from the selector 46. When the key press information of a certain key is assigned to the first channel, the frequency division value data Di corresponding to that key is and the voltage signal ■l related to the key,
A key-on signal KONI regarding the key is sent out. In this case, the voltage signal Vl consists of a voltage signal vB for India control if the pressed key corresponds to a specific tone such as the lowest note, and otherwise it consists of a reference voltage signal vO. be.

The rjJ variable frequency division circuit 52b generates a sound source signal having a pitch of 7 corresponding to the pressed key by dividing the frequency according to the frequency division value data DI, which is the sound source clock signal from the sound source oscillator 54. The sound source signal is supplied to a voltage-controlled variable filter (VCF) 52c to impart desired tone characteristics.

For example, the cutoff frequency of the variable filter 52c is controlled according to the voltage signal Vl, and when the voltage signal vi consists of the voltage signal vB for India control, the cutoff frequency is controlled according to the voltage signal vB. By controlling changes over time, so-called brilliance R-nd (
or tone bend) to the musical tone signal, and otherwise maintains a constant cutoff frequency according to the reference voltage signal V (,).

The encoder (EG) 52d generates a key-on signal K.
A voltage signal representing a predetermined amplitude encoder is generated in accordance with ONI, and this voltage signal is supplied to a voltage-controlled variable gain amplifier (VCA) 52eK.

The variable gain amplifier 52e applies an amplitude en-rozo to the musical tone signal from the variable filter 52c in accordance with the voltage signal from the enlope generator 52d, and the musical tone signal with the rope applied to the amplitude en is sent to the sound system 56. The gain may be controlled by supplying a voltage signal vl' (11-) to the variable gain amplifier 52e as shown by the broken line. The above-described configuration and operation of the tone generator TG1, which allows the amplitude (enlarge) (that is, the volume) to be delicately changed and controlled over time in accordance with the tonnage pressure signal vB, has a latch timing that corresponds to the timing of each corresponding channel. Other tone generators TG2 to TGN except for Tone
The same applies to Tone generator TGl-T
The musical tone signals from the GN are mixed and sent to the sound system 5.
The signal is supplied to 6, and is outputted from a speaker after being subjected to power amplification and the like. As a result, a plurality of musical tones (up to N) can be generated simultaneously from the speaker. , according to the multitone electronic musical instrument shown in FIG. It is possible to change the timbre and/or pitch of a specific note based on the operation of the Indian controller, and as a performer, it is possible to express musical expressions that were previously impossible. be.

In addition, in this sixth embodiment, the frequency division value memory (capital)
At the same time, a multiplier is provided on the output side of the selector 46, and a selector similar to the selector shown in FIG. At the same time, a digital signal obtained by A/D conversion of the output voltage signal vB of the Indian operation circuit 48 and a numerical value Ill'! are input to the A input and B input. If the output signal of this selector is supplied to the multiplier described above, it is possible to select a specific sound among a plurality of sounds in the same manner as in the embodiments shown in FIGS. 1 to 5 described above. Pitch India can now be applied to players.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to specify a specific l or plural tones among a plurality of tones generated simultaneously in an electronic value tone device, and to make musical sounds such as pitch, timbre, volume, etc. only for the specified tones. Since the characteristics are changed and controlled in accordance with the pen operation, a new playing method similar to the homophonic different string playing method on an electric guitar is possible. Furthermore, as shown in Fig. 5, if an arbitrary one can be selected from among the Indian patterns of the ridges, it is possible to further enrich the performance expressions of the multitone electronic musical instrument.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a multitone electronic musical instrument according to a first embodiment of the present invention, and FIGS. 2 to 6 are block diagrams showing multitone electronic musical instruments according to second to sixth embodiments of the present invention, respectively. It is a diagram. lO...Keyboard circuit, 12...Key assigner, 14...
...Frequency number memory, 16...Multiplier, S unit, 18.
...Minimum output circuit, 2tJ, 46...Selector, B...Pinch bend operation circuit, U...Accumulator, 2b, 52...Tonji A Lake, 28
．． 56...Sound system, addition...touch detection circuit, 32...strongest touch detection circuit, praise...specific key range detection circuit, 36...enlope generator, fat...maximum value detection circuit , 40... Pitch India imparting control circuit,
42...Mode selection switch circuit, Necessary...Specific sound detection circuit, 48...Bend operation circuit, 52e...Variable filter, 52e...Variable gain amplifier.

Claims (1)

[Claims] 1. (al keyboard means; (b) musical sound generating means that simultaneously generates a plurality of musical tones based on key press operations on this keyboard means; (c1) an operator operated during performance; control information generating means for generating control information for controlling musical tone characteristic tones based on the operation of the operator; , a specifying means, and a control means for controlling musical tone characteristics according to the control information with respect to the musical tone specified by the specific sound specifying means. 2. Scope of Claim 1. The multitone electronic musical instrument described above is characterized in that the specific tone specifying means is configured to specify a musical tone of a specific pitch based on key depression information from the keyboard means. In the multitone electronic musical instrument according to claim 1, the specific tone designating means is configured to designate a musical tone of a specific key touch based on key touch information from the keyboard device. A multi-tone electronic musical instrument characterized by: 4. In the multi-tone electronic musical instrument according to claim 1, the specific tone designating means specifies a musical tone in a specific range based on key depression information from the keyboard device. 5. In the multitone electronic musical instrument according to claim 1, the specific tone designation means is configured to perform a multitone electronic musical instrument based on amplitude enlope information from the musical tone generation means. A multitone electronic musical instrument characterized in that it is configured to specify a musical tone of a specific volume. 6. (a) a keyboard means; (, e) control information generating means that has an operator operated during performance and generates control information for controlling musical tone characteristics based on the operation of the operator; (e) mode selection means for selecting one of the first and second control modes; (e) mode selection means for selecting one of the first and second control modes; When the first control mode is selected, musical tone characteristics are controlled according to the control information for all the plurality of musical tones simultaneously generated from the musical tone generating means, and when the second control mode is selected, the musical tone characteristics are controlled according to the control information. A multitone electronic musical instrument comprising a control means for controlling musical tone characteristics according to the control information with respect to a musical tone specified by the tone specifying means.