JPS59201095A - Rhythm sound source apparatus varying in sound volume in response to dynamic code - 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 a rhythm sound source device as an electronic musical instrument, and in particular to a standard interface (Musical Instrument) from an external device, typically a keyboard device.
Digital Intertace), the status (e.g., "1" or "0" code indicating that the key has transitioned to the pressed or released state), the key code (e.g., the pitch of the pressed key) A dynamic code (for example, a code in which a numerical value corresponding to the speed at which a key is pressed (hereinafter referred to as dynamic value) is expressed in a binary code to represent the strength of a hammer strike). The present invention relates to a rhythm sound source device whose volume changes in response to the dynamic code. Percussion instruments such as bass drums, snare drums, cymbals, bibats, wood blocks, castanets, etc. can be produced by collaborating with a sound source device that generates desired musical tone signals in response to status, key codes, and dynamic codes from a keyboard device. FIG. 1 is a block diagram showing the configuration of a conventional rhythm sound source device for generating musical tone signals including rhythm musical tone signals simulating sounds. In the figure, the rhythm sound source device A is composed of an automatic rhythm pattern generator 1, a plurality of types of rhythm synthesizer modules 2.3.4.5 following the automatic rhythm pattern generator 1, and output terminals of the synthesizer modules connected together. The automatic rhythm pattern generator 1 further includes a bang selector 7, a start/stop switch 8,
A tempo setting variable resistor 9 is connected. On the other hand, the keyboard device 10 is followed by a sound source device B, which includes a key assigner 11 and a plurality of keys following the key assigner 11.
Typically, the number of synthesizer modules 12.13.14.1 of the same type corresponds to the number of musical tones that can be sounded simultaneously.
5, and musical tone signal synthesis means 16 formed by centrally connecting the output terminals of the synthesizer module. Each output terminal of the rhythm sound source device A and the sound source device B is connected to a variable resistor E linked to an expression pedal via volume control variable resistors C and D, respectively. The output terminal of is connected to a sounding body G such as a speaker via an amplifier F. In the conventional device having the above configuration, when the start/stop switch 8 is operated and the start command signal S0 is given, in response to this, the automatic rhythm pattern generator 1 sends the pattern selector 7
Rhythm signals S1, S2, . S3. Output S4. FIG. 2 is a time chart illustrating extracted rhythm signals S1 for the bass drum and rhythm signals S2 for the cymbals from among such rhythm signals. Now, for example, if the rhythm beat A is selected by the beat selector 7, as shown in FIG. 2(A), the pause period T1
Corresponding to the rhythm signal S1 for the bass drum as a pulse train having
Rhythm signal S for cymbals with pause period T2
2 is generated. Similarly, if Rhythm Pakun B is selected,
This time, as shown in the same figure (C), the pause period T'
1, a rhythm signal S2 having a pause period T'2 and a pause period T''2 is generated as shown in FIG. When a drum is selected, the pause period of each rhythm signal S1 to S4 is determined uniquely to the drum.In addition, the tempo setting variable resistor 9 is operated to specify a different tempo. When the tempo command signal St is given, in response to this, each rhythm signal S1 to S4 maintains the rhythm beat selected by the beat selector 7, and the Bose period 1F, , T2...
. . . are increased or decreased in the same ratio, and the repetition period of the rhythm pattern is changed. Therefore, the rhythm signals 81-84 output from the automatic rhythm bang generator 1 represent a specific rhythm pattern and tempo, and when the rhythm signals S1-S4 are input to the rhythm synthesizer modules 2-5, respectively,
The synthesizer modules 2 to 5 excite built-in relaxation oscillators and generate rhythm musical sound signals S5 and S through filters.
6, S7, and S8, respectively. Rhythm synthesizer modules 2 to 5 generate rhythm musical sound signals S5 to S8, which have harmonic component arrays and envelopes specific to percussion instrument sounds.
For example, in response to the rhythm signals 81 and 82, the rhythm synthesizer module 2.3 outputs rhythm musical sound signals S5 and S6 having harmonic component arrangements specific to bass drums and cymbals, respectively. . The rhythm musical tone signals 85 to S8 outputted from the respective synthesizer modules 2 to 5 are synthesized by the rhythm musical tone synthesizing means 6 and output as a synthesized rhythm musical tone signal S9. On the other hand, the keyboard device 10 is capable of outputting status C, key code C2, and dynamic code C3 (hereinafter collectively referred to as key event data) in response to the pressed state or released state of each key. The key event data is assigned by the key assigner 11 to any of the synthesizer modules 12 to 15 capable of producing sound. Each of the synthesizer modules 12 to 15 is set to be able to output a musical tone signal having a unique tone and envelope, so the synthesizer modules 12 to 15 to which the key event data is supplied decode the key event data and generate a musical tone signal. Output S+o, Sn, 812, and S13, respectively. To explain one of these musical tone signals using an example in which a performer presses a specific key for a certain period of time, the keyboard device 10 changes the status C1 of "1" and the pitch to the pitch by pressing that key. Key code C2 that represents the corresponding numerical value in binary code
, the dynamic value corresponding to the strength of the keystroke is 2.
Key event data consisting of a dynamic code C3 expressed in a decimal code is output, and when the key is released after a certain period of time, key event data with a status C1 of "0" is output at that point. Therefore, the above key event data is
1, for example, when the synthesizer module 12 is assigned to the synthesizer module 12, the musical tone signal 81 has a unique envelope for a certain period of time and represents the pitch of the pressed key with an intensity corresponding to the dynamic value.
Outputs 0. Each musical tone signal S+o-8ta is synthesized by the musical tone signal synthesizing means 16 and output as a synthesized musical tone signal 814, and the synthesized rhythm musical tone signal S9 and the synthesized musical tone signal 814 are applied to volume control variable resistors C and D, respectively. After the volume is adjusted in a semi-fixed manner, variable resistor E, which responds to the expression pedal operation by the performer, changes the volume over time as musical expression, and then amplifier F amplifies I. Then, it is outputted as a musical tone and a rhythm tone from the S-force G. - Since the conventional rhythm sound source device A cooperates with the sound source device B via the variable resistor E linked to the expression pedal, by operating the pedal with your foot, etc., you can hear the sound from the rhythm sound source device. Although it is possible to apply, for example, a rough amplitude change (volume change) in phrase units to the synthesized rhythm musical sound signal s9 and the synthesized musical sound signal S14 from the sound source device in the same amount and simultaneously, Regarding instantaneous and minute changes in volume, only the synthesized musical tone signal 814 changes in response to the dynamic code representing the strength of the keystroke, and the synthesized rhythmic musical tone signal S9 changes in response to the strength of the keystroke. are unrelated, so in conventional rhythm sound generators, when you press the key harder, the synthesized musical tone signal 8
Since only the volume of the musical tone generated by S14 increases, the volume of the rhythm tone generated by the synthesized rhythm musical tone signal S9 becomes relatively insufficient.
On the other hand, on the other hand, when the keystrokes are weakened, the volume of the rhythm sound becomes relatively excessive, which has the drawback of causing an unnatural musical expression. The purpose of the present invention is to solve the problem of unnaturalness in musical expression caused by the instantaneous volume difference between rhythm tones and musical tones based on the above-mentioned conventional technology, and to respond to dynamic codes from an external device such as a keyboard device. By creating a configuration that changes the volume of the rhythm sound, the above drawbacks are eliminated, and the volume of the rhythm sound is instantaneously and minutely changed on a note-by-note basis depending on the strength of the keystroke. It is an object of the present invention to provide an excellent rhythm sound source device that generates rhythm sounds that have a natural sound in terms of musical expression. According to the configuration of the present invention in accordance with the above object, an automatic rhythm generator outputs one or more types of rhythm signals consisting of pulse trains having mutually independently set pause periods according to a selected rhythm pattern, In response to each of the signals, one or more types of rhythm synthesizer modules output pulsed rhythm musical sound signals of different types, and a rhythm musical sound signal synthesis means synthesizes the one or more types of rhythm musical sound signals to produce a synthesized rhythm musical sound. output a signal, while
A digital-to-analog converter converts the dynamic code from an external device into an analog voltage and supplies this as an amplitude control signal to a voltage-controlled variable gain amplifier, which converts the dynamic code from an external device into an analog voltage. The gist of this invention is to amplify the synthesized rhythm musical tone signal, and the second invention, which is related to this invention, asymptotes to zero when the keystroke from the digital-to-analog converter is weakened.

[The eyelid control amplitude control signal is corrected by the signal correction means into a non-numbered Xukokkon amplitude control signal that asymptotically approaches a specific value other than zero when the keystroke is weakened, and this is supplied to the voltage-controlled variable amplification factor amplifier. The gist of the invention is that the digital-to-analog converter converts the dynamic code from the external device into a fim that asymptotically approaches zero when the keystroke is weakened. The converter converts it into an analog voltage and supplies it as a drive signal to a signal correction means, and the correction means corrects the drive signal to a ≠ displacement force drive signal that asymptotically approaches a specific value other than zero when the keystroke is weakened. This is intermittently supplied to a rhythm synthesizer module through an analog switch that responds to the rhythm signal, and the synthesizer module adjusts the amplitude of the oscillation command signal as a corrected drive signal. The gist of the invention is to output a pulse-like rhythm musical tone signal whose amplitude changes.Furthermore, the configuration of the fourth invention, which is related to this invention, is that when the keystroke is weakened, the signal asymptotically approaches zero. Corresponding to each of the dynamic chords expressing dynamic value, each of the dynamic chords expressing dynamic value asymptotically approaches a specific value other than zero when the keystroke is weakened. The code correcting means includes a dynamic code conversion table means for allocating a dynamic code, which searches for a dynamic code corresponding to a dynamic code from an external device and supplies it to a digital-to-analog converter. The converter converts the W dynamic code into an analog voltage as a drive signal, and supplies this to the rhythm synthesizer module as an oscillation command signal through an analog switch that responds to the rhythm signal. That is. Next, the present invention will be described in detail as follows based on FIGS. 3 and 4. As shown in FIG. 3, the output terminal of the rhythm musical tone signal synthesis means 6 is connected to the input terminal of a voltage-controlled variable gain amplifier 21, and the output terminal of the amplifier is connected to the input terminal of a variable resistor C for volume control. connected to. On the other hand, the output terminal for the dynamic code of the keyboard device 10 is connected to the voltage-controlled variable gain amplifier 2 via the digital-to-analog converter 22.
The components shown in the middle of FIG. 1 are the same as the components indicated by the same reference numerals in FIG. The operation of the above configuration will be explained below with reference to FIG. 4. When the start/stop switch 8 is operated and the start command signal So is given, the automatic rhythm bang generator 1 generates rhythm signals S1 to S1 according to the selected rhythm pattern and tempo.
S4, and in response, each of the rhythm synthesizer modules 2 to 5 outputs rhythm musical tone signals 85 to 85, respectively.
The operation of outputting S8 is the same as that of the conventional device shown in FIG. Furthermore, the operation of sound source device B, which generates musical tone signals 810 to 813 based on key event data from keyboard device 10 and generates synthesized musical tone signal 814 from these, is also similar. Now, to explain the rhythm synthesizer 2, in response to the start command signal &, the automatic rhythm pattern generator 1 outputs the pulse train shown in FIG. As a result, the module 2 outputs the rhythm musical tone signal S5 shown in FIG. 4(B). At this time, if the performer gradually increases the strength of the keystrokes in accordance with the rhythm, the dynamic value represented by the dynamic chord C3 output from the keyboard device 10 will also gradually increase in accordance with the rhythm. Therefore, in response to this, the amplitude of the synthesized musical tone signal 814 output by the sound source device B gradually increases in proportion to this. During this time, the dynamic code C3 is also supplied to the digital-to-analog converter 22. and the converter allows
Since it is converted into an analog voltage and output as the amplitude control signal 815, the voltage value of the amplitude control signal 815 also changes in rhythm with the timing of the rhythm signal S+, as shown in FIG. 4(C). Together, they increase in a stepwise manner. When the amplitude control signal 815 is supplied to the control terminal of the voltage controlled variable amplification factor amplifier 21, the amplification factor of the amplifier 21 increases in proportion to the voltage value of the amplitude control signal 815. The synthesized rhythm musical tone signal S9 is amplified with an amplification factor that increases stepwise, and is output from the rhythm sound source device as a corrected synthesized rhythm musical tone signal 816 as shown in FIG. 4(D). Regarding rhythm musical tone signals S6, S7, and S8 output from other rhythm synthesizer modules 3.4.5,
After being synthesized by the rhythm musical tone synthesis means 6, the synthesized rhythm musical tone signal S9 is similarly supplied to the voltage-controlled variable amplification factor amplifier 21, from which a corrected synthesized rhythm musical tone signal S16 is obtained. The corrected synthesized rhythm musical tone signal 816 from the rhythm sound source device A and the synthesized musical tone signal 8 from the tone source device B.
14 are mixed through volume control variable resistors C and D, respectively, and supplied to variable resistor E, and after being attenuated in accordance with the amount of operation of the expression pedal by the performer, they are amplified by amplifier F. It reaches the sounding body G and makes it sound. However, according to the above-mentioned invention, the performer can instantaneously and minutely change the strength of musical tones and rhythm sounds not only in phrase units but also in note units, which is preferable for musical expression. Since the sound increases or decreases to the same degree as the strength of the keystrokes, if the keystrokes were weakened below a certain level, the rhythm sounds would be buried in the musical sounds, giving the audience an inconvenient impression. . Therefore, in the second to fourth inventions related to the above-mentioned invention, when the keystroke is weakened to a certain level by correcting the amplitude control signal, etc., the volume of the rhythm sound is adjusted relative to that of the musical sound. This was done to give a calming impression to the audience. Next, the fifth embodiment of the second invention related to this invention will be described.
The explanation will be as follows based on FIGS. 7 to 7. As shown in FIG. 5, in the rhythm sound source device according to the second embodiment of the invention, a signal correction means H is interposed between the digital-to-analog converter 22 and the voltage-controlled variable gain amplifier 21. The other components are the same as those indicated by the same reference numerals in FIG. The signal correction means H is connected to a variable resistor 23 connected to the output terminal of the digital-to-analog converter 22 and a slider of the variable resistor 23, as shown in FIG.
The base of the operational amplifier 24 configured as a voltage follower is connected to the output terminal of the operational amplifier 24 through resistors 25 and 26 that constitute a bleeder, and the emitter thereof is connected through a resistor 29 (not shown). A first transistor 21 extending to the negative power supply has its inverting input terminal connected to the collector of the transistor 27, its non-inverting input terminal is grounded, and a feedback resistor is connected between its output terminal and the inverting input terminal. 31 is followed by an operational amplifier 28;
It consists of a second transistor 3o whose emitter is commonly connected to the emitter of the first transistor 21 and whose sonocollector bases are commonly grounded. In such a circuit configuration, the first transistor 2γ is
The transistor 27 operates as an emitter follower whose positive power source is the virtual ground formed at the inverting input terminal of the operational amplifier 28, and the emitter potential of the transistor 27 remains in the saturation region because its collector and base are commonly connected. Since the emitter potential of the second transistor 3o is maintained at a substantially constant potential (a potential biased to the negative side by the voltage between the pace riveters of the transistor 3o from the hanging potential), the output of the operational amplifier 24 is The voltage on the resistor 25.26
The base potential VB of the first transistor 27 determined by dividing it by a bleeder consisting of
This is the base-emitter voltage VBE of γ. On the other hand, as is well known, there is a non-linear relationship between the base-emitter voltage VBE and the collector current Ic of a transistor.
base ff potential VB (base-emitter voltage VBE
) is gradually increased from zero potential (and accordingly, the collector current Ic supplied from the virtual ground to the collector of the transistor 27 increases non-linearly, thereby increasing the current Ic to replenish the current Ic). , the output voltage Eo of one operational amplifier 28 produced as a voltage drop across the feedback resistor 31 due to the current passing through it, i.e.
The corrected amplitude control signal s17 also gradually increases along the curve J+ that rises non-linearly from the origin, as shown in the seventh graph. Therefore, the dynamic code C3 from the keyboard device 1o is converted into a linear amplitude control 4i 815 by the digital-to-analog converter 22, that is, as shown in FIG. As the voltage increases, it is converted into an analog voltage that increases along the straight line L extending from the origin and is supplied to the variable resistor 23 of the signal correction means H. The amplitude control signal 81
If the position of the slider is selected so as to obtain a voltage of a desired specific value corresponding to a dynamic value of zero, the voltage of the seventh In Figure (13), an analog voltage that increases along the straight line L2 indicated by a dotted line is obtained. ,・Then, after this analog voltage is impedance-converted with a gain of 1 by the subsequent arithmetic amplifier 24, it is passed through the bleeder consisting of the resistors 25 and 26 to the first transistor. 27, bass
Since the emitter voltage ■BE is supplied as the collector current Ic of the transistor 2γ, that is, the operational amplifier 28
The output voltage El+ increases along a curve J2 that rises non-linearly from a specific value M' determined according to the position of the slider of the variable resistor 23, as shown by the dotted line in Figure 1). (7) The input linear amplitude control signal S15
, a corrected non-linear amplitude control signal 817 is obtained, which is supplied to the control terminal of the variable gain amplifier 21 controlled by the voltage amount 1''. On the other hand, in sound source device B, as shown by the straight line LL in Fig. 1) In this example, the volume is controlled along a curve extending from the origin 7, as shown by curve Jl. In addition, the non-linearization process described above, as is the case in many cases, reduces the dynamic value that liquefies while keeping a linear relationship with the strength of the keystroke detected as the keypressing speed. This is necessary in order to realize, for example, the feeling of hitting the keys on a piano as a natural musical instrument, by correcting the linear relationship to the force applied to the keys into a dynamic value that changes suddenly. Therefore, in the embodiment of the second invention of the CS, when the keystrokes are weakened, in FIG. 7i (B), the region of small dynamic value, in other words, the first transistor 2
In other words, the area where the base-emitter flood pressure VBE is small in FIG.
In this region, the corrected amplitude control signal of the rhythm sound source device However, in the region where the tableting is weak, the volume of the rhythm sound is relatively large and direct compared to the uncorrected amplitude control No. 1d in the sound source device B. The weaker the keystrokes, the more pronounced the tendency to become thick (1. An embodiment will be described based on FIGS. 8 to 10 (f as follows. As shown in FIG. 8, in the rhythm sound source device of the embodiment of the third invention, the signal correction means is Between H and the rhythm synthesizer module 32.33.34.35,
Analog switches 36, 37, 38, 39 are respectively inserted, each control terminal of which is connected to the four output terminals of the automatic rhythm and tongue generator 1, respectively. The other components are the same as those indicated by the same reference numerals in FIG. And the rhythm synthesizer module 32.3
As shown in Figure 9, the internal configuration of 3.34.35 is a phase shifter consisting of a resistor R and a capacitor C connected in a multi-stage 7N6 shape, inserted in the feedback path of the amplifier 4a. circuit 4
0b, and a signal adding circuit 40d consisting of a resistor &R2 inserted in series between the input terminal of the amplifier 4a and the ground, and a connection point of both resistors 1' and R2 extending to the oscillation command signal input terminal 40c. It consists of a relaxation oscillator 40 and a filter 41 following it. Now, similar to the above explanation with reference to FIG. 4 (Al, fc), if the keystrokes are gradually strengthened while hitting the keys in time with the rhythm of the rhythm signal S1 shown in FIG. 10(A), , the signal correction means H outputs a drive signal 817 corresponding to the above-mentioned corrected amplitude control signal 817, and in this case, the drive signal corresponds to the above-mentioned FIG. (A) While maintaining the relationship represented by the middle curve J2, it increases in a stepwise manner with each keystroke, as shown in FIG. 10fB). Such drive signal S'l? In response to the rhythm signals 81, 82, R3, 84 supplied to their respective control terminals, the analog switches 36, 37, 3B, 39 that are supplied with the 36, 37, 3B, 39 are rendered conductive only during the duration of the rhythm signals. The drive signal is passed intermittently. Thus, for example, as shown in FIG. 10(C), from the analog switch 36 that responds to the rhythm signal Sl,
An oscillation command signal 81 having each amplitude value of the drive signal S'17 increasing stepwise and the duration period between the rhythm signals Sll.
9 is output, and this is supplied to the oscillation command signal input terminal 40c of the rhythm synthesizer 32. In response to this, the synthesizer module whose internal configuration is shown in FIG.
The oscillation command signal 819 is introduced into the input terminal of the amplifier 40a via the amplifier 40a, and the shortage suppression condition (und
An electrical disturbance is generated in the closed loop of the er da + nped condition), thereby causing the closed loop to enter a damped oscillation state. A sinusoidal signal is obtained, which rises with an amplitude corresponding to the amplitude of the signal, and has an envelope that follows the attenuation curve specific to the modulo, that is, the desired percussion instrument sound. If this is passed through the subsequent filter 41 and the arrangement of harmonic components included in the sinusoidal signal is adjusted, the ninth
A rhythm music signal 823 representing a desired percussion instrument sound as shown in Figure 1D is obtained. And Ike Rhythm 2 Feather Synthesizer Module 33.
Regarding 34.35, each oscillation command signal 820
．． 821, 822, and in response to the corrected drive signal S'17, exactly the same operation is performed, and the rhythm musical tone signals S24, S25, 826 from each module are combined a IJ
The point where it is synthesized into the sum musical tone signal 827 is the same as the operation of the embodiment shown in FIG. 3 or FIG. Thus, the rhythm sound source device according to the third invention has been corrected corresponding to the corrected amplitude control signal 817 in the rhythm sound source device according to the second invention of Section 1111. Under the control of the drive signal S']7, when a key is pressed weakly to some extent, a rhythm sound whose volume remains relatively large compared to the musical sound from the sound source is obtained. Next, the first embodiment of the fourth invention that is related to this invention will be described.
The explanation based on FIG. 1 is as follows. As shown in FIG. 1, in the rhythm sound source device according to the embodiment of the fourth invention, a chord correction means N is interposed between the keyboard device 1o and the digital φ analog converter 22, and the chord correction means N is The means includes a dynamic code conversion table 42 and a dynamic code search means 43' realized by the arithmetic processing section 43. The dynamic code conversion table 42 is
Typically, each address is inscribed with a dynamic code that represents a dynamic value that increases linearly from zero depending on the strength of the keystroke, and varies from a future value other than zero to a non-zero value depending on the strength of the keystroke. Each dynamic code representing a supplemented dynamic value that increases linearly is assigned and taken from a readably recorded memory;
, it is possible to search for the relationship shown by curve J2 when the horizontal axis is read as dynamic value. The other components are the same as those indicated by the same reference numerals in FIG. In the above configuration, when a key is operated, the keyboard device 10 outputs a dynamic code C3 that linearly represents the strength of the keystroke, and when this is supplied to the code correction means N, the correction means performs a dynamic code C3. The code search means 43' searches for the supplied dynamic code C3.
Specifies the address of the dynamic code conversion table 42, represented by supply to. Such processing is performed by reading the horizontal axis as a linear dynamic value before correction in Figure 7 above, specifying one point x1 on the horizontal axis, and setting the corresponding point x1 on the vertical axis with respect to curve J2. This corresponds to the process of searching for yl. Then, the subsequent digital-to-analog converter 22 converts the corrected drive signal 828 into the analog switches 36, 37, 3 in accordance with the corrected dynamic code C'3.
8.39, and thus each of the rhythm synthesizer modules 32.33.34.35.
The drive signal 828 is used as the oscillation command signal 819, S20 . S2
+, 822, so that intermittent supply is possible, so the subsequent operation is similar to that of the configuration shown in FIG. 8 above. As described above, according to the present invention, the "dynamic code" from an external device is converted into an analog voltage, and the synthesized rhythm musical sound signal is outputted from the IJ Sum sound source device in correspondence with the voltage value of the analog voltage. By controlling the amplitude of the rhythm sound, the volume of the rhythm sound can be changed instantaneously and minutely in units of notes depending on the strength of the keystrokes, allowing for a wide variety of musical expressions. Furthermore, according to the second, third, and fourth inventions that overlap with this invention, in addition to the above-mentioned effects of this invention, when the keystroke is weakened, the keystroke asymptotically approaches zero. Correct the Sansha Kikimi dynamic code representing the dynamic value of Hachikai Yu1, which asymptotes to a specific value other than zero when the keystrokes are weakened, and make it correspond to the corrected signal. The device is configured to control the amplitude of the synthesized rhythm musical tone signal output from the rhythm sound source device. σ), which can be kept relatively large, makes it possible to express music with a sense of stability without losing the sense of rhythm, even when playing the Gogo tone. It also has other effects.

[Brief explanation of the drawing]

FIGS. 1 and 2 relate to the prior art. FIG. 1 is a diagram illustrating its configuration, and FIG. 2 is a time chart illustrating a rhythm signal. 3 and 4 are related to the first embodiment of the present invention, FIG. 3 is a block diagram showing its configuration, and FIG. 4 is a block diagram showing a rhythm signal tA) and a 1J rhythm certain tone signal CB+ and,
Amplitude control signal (CL and composite 1” sum musical tone signal (J))
Figures 5 to 7, which are time charts shown in comparison, are related to the embodiment of the second invention, and Figure 5 is
77 is a block diagram showing its configuration, and No. 6 is a circuit diagram showing an extracted internal configuration of the signal correction means H in FIG. 5.
(A) is the transistor 27 (operational amplifier 2B) in FIG.
t graph showing the input/output custom curve of the 1st UA (including B
+ is a graph showing the relationship between the dynamic value represented by the dynamic code and the output voltage of the operational amplifier 24 in the sixth factor. 8 to 10 relate to an embodiment of the third invention, FIG. 8 is a block diagram showing its configuration, and FIG.
Figure 10 is a circuit diagram showing an extracted internal failure configuration of the rhythm 1% IA, a drive signal (Lll), an oscillation command signal (CL, and a rhythm musical tone signal (D)). FIG. 11 is a block diagram showing the configuration of an embodiment of the fourth invention. 1...Automatic rhythm generators 2-6, 32-35... ... Rhythm piece 1 Synthesizer module 6 ... Rhythm music = a'
(ILR synthesis means 10...external device 22...transitional analog converter 21...
...IR pressure Ili control variable gain amplifiers 36 to 39
...... Analog Sui Sochi 42... Dynamic code conversion table means 43'...
Dynamic code insertion means H...Signal correction means N...Code correction means patent applicant Roland Corporation

Claims (4)

[Claims] (1) One or more types of rhythm signals sl, 82, S3, S4, etc. consisting of pulse trains having pause periods set independently from each other according to a selected rhythm pattern.
an automatic rhythm generator 1 that outputs pulse-shaped rhythm musical sound signals S5, S6, and S6 of different types in response to each of the one or more types of rhythm signals S1 to S4.
7, one or more types of rhythm synthesizer modules 2.3.4.5... outputting S8... and one or more types of rhythm musical sound signals S5 to S8...・
In the rhythm sound source device, the synthesized rhythm musical sound signal S9 from the rhythm musical sound signal synthesizing means 6 is supplied to its control terminal. amplitude control signal 8
A voltage-controlled variable amplification factor amplifier 21 amplifies with an amplification factor that changes according to 15, and converts the dynamic code C3 from the external device 10 into an analog voltage and applies it to the control terminal of the voltage-controlled variable amplification factor amplifier 21. A rhythm sound source device characterized in that it is further equipped with a digital-to-analog converter 22 for supplying an analog voltage as an amplitude control signal. (2) One or more types of rhythm signals S1, S2, S3, S4, etc. consisting of pulse trains having bose periods set independently from each other according to a selected rhythm pattern.
an automatic rhythm generator 1 that outputs different types of pulsed rhythm musical sound signals S5, S6.87 in response to each of the one or more types of rhythm signals S1 to S4...
．． One or more types of rhythm synthesizer modules 2.3.4.5... outputting 8B...
The one or more types of rhythm musical sound signals s5 to s8...
The rhythm musical tone signal synthesis means 6 synthesizes the synthesized rhythm musical tone signal s9 and outputs the synthesized rhythm musical tone signal s9, and the synthesized rhythm musical tone signal s9 from the rhythm musical tone signal synthesis means 6 is controlled by amplitude control (according to No. The voltage-controlled variable amplification factor amplifier 21 amplifies with an amplification factor that changes with
In a rhythm sound source device comprising a digital-to-analog converter 22 that supplies the analog voltage as an amplitude control signal 815 to a control terminal of the voltage-controlled variable gain amplifier A 21, the voltage-controlled variable gain amplifier 21 and A signal correction means H for correcting the amplitude control signal SI5 is inserted and attached between the digital to analog converter 22, and the signal correction means H produces a white gradient that asymptotically approaches zero when the keystroke is weakened. The amplitude control signal 81 ?corresponds to the 匈子AMPLITUDE CONTROL SIGNAL Sj5, and the bare-handed PINKAI signal which asymptotically approaches a specific value other than zero when the keystroke is weakened. A rhythm sound source device characterized in that the voltage is supplied to a control terminal of a voltage controlled variable amplification factor amplifier 21. (3) One or more types of rhythm signals 81.82.83%S4 consisting of pulse trains having pause periods set independently from each other according to a selected or sum pattern.
Automatic rhythm generator 1 that outputs 819.8
20, 821, 822, old... Different types of pulse-like rhythm musical tone signals S23, S24, S25 whose amplitude changes according to the magnitude of the analog voltage in response to the analog voltage. One or more types of rhythm synthesizer module 3 that outputs .826...
2.33.34.35... and the one or more types of rhythm musical sound signals 823 to 826... and outputting the synthesized rhythm musical sound signal 827 as a synthesized rhythm musical sound signal 827. The rhythm synthesizer modules 32 to 35 generate oscillation command signals 819 to 822 in response to the rhythm signals S1 to S4 supplied to their control terminals. Analog switches 36.37, 38.39 that intermittently supply power to each of...
・Old... and dynamic code c from external device 1°
3 into an analog voltage, and analog switch 36~
Digital-to-analog converter 22 that supplies the analog voltage as a drive signal 815 to 39'...
In the rhythm sound source device, a signal correction means H for correcting the drive signal 815 is inserted between the analog switches 36 to 39 and the digital/analog converter 22. The signal correction means H is provided with an i-immersion driving signal 8 that asymptotically approaches zero when the keystroke is weakened.
15, the rhythm sound source is characterized in that it supplies, as a drive signal 817, a basic musical accompaniment signal that asymptotically approaches a specific value other than zero when the keystroke is weakened to the analog switches 36 to 39. Device. (4) Pulse train number 819.8 having bose periods set independently of each other according to a selected rhythm pattern.
20, 821, 822, . . ., different types of pulsed rhythm musical tone signals 823, S24, whose amplitudes change according to the magnitude of the analog voltages. One or more types of rhythm synthesizer modules 32.33, 34.35, etc. that output S25, S26..., and one or more types of rhythm musical sound signals 823-826... . . . and generates an oscillation command signal S19 in response to each of the rhythm signals 5l-84 supplied to its control terminal. -822... to each of the rhythm synthesizer modules 32 to 35... intermittently, an analog switch 36.31.3B;
39... and the supplied dynamic code C
3 into an analog voltage, and analog switch 36~
39. The analog voltage is applied to the drive signal 8.
28, the rhythm sound source device is provided with a chord correction means N for correcting the dynamic chord C3 from the external device 1o, and the chord correction means N weakens keystrokes. Corresponding to each dynamic code C3 representing an m dynamic value that asymptotically approaches zero, each corrected dynamic code C'3 representing a ≠m dynamic value that asymptotically approaches a specific value other than zero when the pressure is weakened. and a dynamic code search means 43' for searching each of the divided dynamic codes in the dynamic code conversion table means 42 and supplying the corrected dynamic code C'3 to the digital-to-analog converter 22. Rhythm sound source device.