JP2660693B2 - Tone parameter setting device for electronic musical instruments - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an electronic musical instrument, in which a plurality of timbre parameters are appropriately set so that timbres of various musical instruments (including the shape of an envelope. The same applies hereinafter). ) Or other timbre parameter setting device for enabling generation of a tone signal that expresses a new timbre. In particular, when changing the characteristics of a timbre, a plurality of timbre parameters are set. Instead of making individual changes to each of them, simply issue a change instruction for one of the tone change feature elements that indicates the feature whose tone is to be changed, for example, "BRILLIANCE" (brightness of sound). The present invention relates to a technique in which a plurality of specific timbre parameters necessary for enhancing / suppressing a timbre changing characteristic element can be increased / decreased in a suitable manner. <Prior Art> As a tone parameter setting device in an electronic musical instrument,
Various types are frequently used, but all of them set a specific plurality of tone color parameters individually by some means. However, recently, in order to respond to the demand for increased diversity of performance expression by electronic musical instruments, when changing to an effective performance expression of a tone definition characteristic element, that is, a broad sense of tone including a sound energizing pattern. However, there is a tendency for the characteristic elements to be emphasized and suppressed by the change from the viewpoint of the performance expression on the timbre, and for example, those listed in the end table 1 are desired. In order to secure such various timbre changing characteristic elements, the tone signal generation means in the electronic musical instrument must be complicated and advanced, and the timbre parameters, that is, the timbres in a broad sense, are effectively converted. The number of timbre parameters to be changed tends to increase due to the change at the time of changing to the performance expression, and for example, the ones listed in Table 2 at the end are known. <Problems to be Solved by the Invention> However, according to the related art, in order to change the timbre changing characteristic element, it is necessary to change a large number of timbre parameters related thereto, and the operation of changing the timbre parameters is extremely complicated. There was a problem of becoming. <Means for Solving the Problems> The present invention has been made in consideration of the problem of the complicated operation of changing the timbre parameter when changing the timbre changing characteristic element of the above-described conventional technique, and a plurality of timbre parameters of different types are provided. Timbre parameter designating means for designating a timbre parameter corresponding to a desired timbre to be supplied to the musical tone signal generating means from among a plurality of timbre parameters respectively corresponding to a plurality of timbres defined by: A tone color changing feature element change instructing means for instructing a change of a predetermined tone color changing feature element with a name indicating the same, and a correlation between the predetermined tone color changing feature element and a plurality of tone color parameters related thereto. A timbre parameter coefficient storage unit for storing a timbre parameter coefficient group; A plurality of timbre parameters supplied to the tone signal generation means specified by the timbre parameter specification means based on a timbre parameter coefficient group stored in the timbre parameter coefficient storage means in response to a change instruction to a timbre change characteristic element. And a tone color parameter change instructing means for instructing to increase or decrease the value based on the current value. <Operation> When a change of a predetermined timbre change characteristic element is instructed by the timbre change characteristic element change instructing means, the timbre parameter coefficient storage means specifies correlations with a plurality of timbre parameters relating to the timbre change characteristic element. The tone color parameter coefficient group to be read is read out, and a change instruction is made based on the tone color parameter coefficient group so that the values of the plurality of tone color parameters increase or decrease based on the current value. <First Embodiment> A first embodiment of the present invention will be described below with reference to FIGS. In FIG. 1, RA as timbre parameter storage means is used.
A digital switch 2 is connected to address terminals A3 to A6 of M1 as tone color parameter designating means.
The output terminals D0 to D6 of M1 are commonly connected to address terminals D0 to D6 of eight reversible counters 3-1... 3-7 and 3-8 as tone color parameter changing means. 3-1. Each of the output terminals Q0 to Q6 of 3-7 and 3-8
It is connected to a normal tone generator 4 as a tone signal generator. The output terminal TRG of the ordinary change detection circuit attached to the digital switch 2 is connected to the clear terminal CLR of the 5-bit counter 5 and the minimum digit (L
The output terminal of SB is from 3 to 8 (3 bit "1")
Convert "0" state to 8-bit "1""0" state)
The counter 5 is connected to the enable terminal E of the decoder 6.
Are connected to the enable terminal E of the counter 5 itself, respectively.
Further, three output terminals other than the LSB and the MSB of the counter 5 are connected to the remaining address terminals A0 to A2 of the RAM1. The three output terminals are branched midway and extend to the input terminals of the decoder 6, and the eight output terminals of the decoder 6 are respectively connected to eight reversible counters 3-1 ... 3-7, 3-8. Connected to load terminals LD1 ... LD7, LD8. The pulse encoder 7 as the tone parameter change amount designating means rotates its rotating shaft in conjunction with an operator responding to a manual operation, and generates a predetermined number of additional pulses per unit rotation angle in the positive direction of the shaft. , A predetermined number of subtraction pulses are output per unit rotation angle in the opposite direction of the axis, and the addition pulse output terminals thereof are reversible counters 3-1,.
8 and a group of AND gates 8-
8-7, 8-8 are commonly connected to one input terminal, and the subtraction pulse output terminal is connected to a group of AND gates 9-1... 9-7 provided in the same manner. 9
-8 is commonly connected to one input terminal. The group of AND gates 8-1 ... 8-7, 8-
8 output terminals are reversible counters 3-1 ... 3-7, 3-8
And the output terminals of the AND gates 9-1... 9-7 and 9-8 of the other group are connected to the reversible counters 3-1... 3-7 and 3-8, respectively. Connected to a subtraction pulse input terminal, and a pair of AND gates 8
The other input terminals of -1 / 9-1 are connected in common and extend to the output terminal D0 of the ROM 10 as the tone color parameter coefficient storage means, and the other pair of AND gates ... 8-7 / 9-7, 8- 8 / 9−
Similarly, each of the other input terminals 8 extends to each output terminal... D6 and D7 of the ROM 10. Address terminals A0 and A1 of the ROM 10 are connected to 2-bit output terminals of a digital switch 11 as tone color changing feature element designating means. In the above configuration, when setting the timbre parameters, the digital switch 2 as the timbre parameter designating means is manually operated to transmit the 4-bit timbre designation signal S1 to the RAM1.
To the address terminals A3 to A6, and 2 to the fourth power, that is, 16
(Each of which is assigned to a tone color of a musical tone from one type of musical instrument) can be designated. And each of these storage areas has
Eight data representing each of eight timbre parameters (see Table 2) for specifying one timbre are stored, and each data is stored in a 3-bit address terminal A0-A2 and stored in a timbre address signal. By designating S2, each of the eight addresses can be individually read, and in this example, each data is composed of 7 bits. Therefore, when one storage area is specified by the tone color specification signal S1, eight addresses in one storage area are sequentially instructed by the coloring address signal S2 generated as described below, 7-bit data is read from each address to the data bus 12 via the output terminals D0 to D6,
This is distributed and supplied to the input terminals D0 to D6 of the reversible counters 3-1 ... 3-7 and 3-8 in a time-division manner via the bus 12, as described later. When changing the tone parameters, the operator first
Digital switch as tone change feature element designating means
When one of the timbre change feature elements to be emphasized or suppressed is designated by operating the operator 11, the digital switch 11 outputs a 2-bit timbre change feature element designation signal S 3 representing the designated timbre change feature element. Are supplied to two address terminals A0 and A1 of the ROM 10 as the timbre parameter coefficient storage means, and each of the eight timbre parameter coefficients unique to one of the four timbre changing characteristic elements (see Table 1) is stored. The 8-bit data represented by the bit state is read to the output terminals D0 to D7 of the ROM 10. Tone parameter coefficient (state of each bit of 8-bit data read at one time from ROM 10) and timbre parameter (numerical value represented by 7-bit data read at one time from RAM 2) for each timbre changing feature element FIG. 2 shows the relationship between the timbre corresponding to this bit and the state of the bit (eg, the seventh bit) of the 8-bit data representing the timbre parameter coefficient is "1". Parameters (eg VCO LFO MOD
(Parameter 7)) means that there is a correlation between the operation amount of the parameter change designating means 7 and the timbre parameter change amount to be realized, and conversely, the state of the bit is “ “0” means that there is no correlation between the two. Incidentally, the correlation in the first embodiment is “Yes”.
Although limited to either "none", such gradual strength of the correlation will be realized by the second embodiment. Thus, for each 8-bit data that is read from the ROM 10 to its output terminals D0 to D7 and that represents the timbre parameter coefficient, it responds to the state of each bit of the data (for example, the seventh bit "1"). Then, each pair of AND gates 8-1 / 9-1 ... 8-7 / 9-7, 8-8 / 9-8 (for example,
A pair of AND gates 8-8 / 9-8) are opened to allow the addition pulse Pu and the subtraction pulse Pd from the pulse encoder 7 to pass therethrough. However, as will be described later, at this time, eight reversible counters 3-1.
-7 and 3-8 have a RAM 1 designated by one operation of the digital switch 2 as a tone color parameter designating means.
Eight pieces of data that are stored in one storage area and represent one timbre parameter in a 7-bit configuration, that is,
Eight tone parameters (parameter 0 to parameter 7)
Are stored in a time-division manner while maintaining the correspondence, and in this situation, the operator operates the pulse encoder 7 as the tone color parameter change amount designating means and rotates it in the forward direction. Then, a predetermined number of added pulses Pu per unit rotation angle are supplied to the AND gates 8-1 to 8-7,
8-8.
Pu passes through only an AND gate (for example, AND gate 8-8) receiving “1” as a timbre parameter coefficient at the other input terminal, and adds a reversible counter (for example, reversible counter 3-8). At this time, data representing one tone parameter assigned to each reversible counter is already loaded into the reversible counter by the operation described later, and preset to the numerical value of the parameter. (For example, the value of the eighth (parameter 7) of the eight tone color parameters for specifying the designated tone color is preset in the reversible counter 3-8) The reversible counter having received the pulse Pu adds the number of the added pulses Pu (the number of occurrences) to the value preset therein. When the operator rotates the pulse encoder 7 in the reverse direction, in the same operation, in this case, the subtraction pulse Pd is guided to the subtraction pulse input terminal of the predetermined reversible counter,
The number of the subtraction pulse Pd is subtracted from the preset value. Thus, the reversible counters 3-1 ... 3-7,
Eight timbre parameters loaded separately in 3-8 are
Digital switch as tone change feature element designating means
"1" and "0" of each bit of the data representing the timbre parameter coefficient read from the ROM 10 as the timbre parameter coefficient storage means for each timbre change feature element specified in 11
It is controlled by the state, and increases / decreases for each tone parameter corresponding to each bit in accordance with the sole operation amount of the pulse encoder 7 as the tone color parameter change amount designating means. The tone color changing characteristic element designating means 11 and the tone color parameter changing amount designating means 7 constitute tone color changing characteristic element change designating means, and AND gates 8-1... 8-8 and 9-1. It constitutes a tone parameter change instruction means. Next, referring also to FIG. 3, eight timbre parameters for specifying one timbre stored in one storage area of the ROM 1 are sequentially read from the RAM, and the eight reversible counters 3 are read. The operation of distributing and supplying in a time division manner to -1... 3-7 and 3-8 will be described below. In response to the manual operation of the operator, the digital switch 2 as a tone color parameter designating means outputs the tone color designation signal S1 to designate a new tone color, and at the same time, the switch 2
Generates a trigger signal S4 (FIG. 3 (A)), and in response, the 5-bit counter 5 is cleared (FIG. 3 (G) a). Thereafter, the counter 5 counts the clock pulse CLK (FIG. 3 (B)), and the first stage flip-flop of the counter 5 divides the frequency of the clock pulse CLK (FIG. 3 (C)), and this is enabled. Since the signal E is supplied to the enable terminal of the decoder 6, the decoder 6 is activated only during the period of the enable signal, and the eight signals corresponding to the “1” and “0” states of the 3-bit input signal, respectively. The output signal is supplied as a load pulse S5 to the reversible counters 3-1... 3-7 and 3-8 in synchronization with the enable signal E (FIGS. 3 (H), (I) and (J)). During this time, the flip-flops of the second to fourth stages of the counter 5 have advanced so as to divide the output pulses of the preceding stages (FIGS. 3 (D), (E), and (F)). Is defined in synchronization with the enable signal E (FIG. 3 (C)).
As a result, a 3-bit tone color address signal S2 is generated, and the input terminal of the decoder 6 and the address terminals A0 to A2 of the RAM 1 are generated.
Supplied to Thus, the eight reversible counters 3-1 ... 3-7, 3-
8 from the RAM 1 on the data bus 12 in response to the timing of the enable signal E (FIG. 3 (C)) and, in turn, to each of the eight load pulses S5 synchronized with the increment of the tone color address signal S2. Similarly, each of the eight timbre parameters read out in synchronization with the increment of the timbre address signal S2 is loaded and preset to each timbre parameter value. Then, at the point in time when the progress of the flip-flops of the second to fourth stages of the counter 5 has defined eight states (FIG. 3F), the fifth stage flip-flop of the counter is activated. Since it is inverted to "1" (FIG. 3 (G) c), the complementary signal "0" of "1" causes the extinction of the enable signal E of the counter 5 itself. And stands by until the trigger signal S4 (FIG. 3 (A)) is received. <Second Embodiment> A second embodiment of the present invention will be described below with reference to FIGS. In FIG. 4, an addition pulse output terminal and a subtraction pulse output terminal of the pulse encoder 7 as a tone color parameter change amount designating means are connected to a well-known pulse multiplication circuit 20 respectively.
U, extend to each input terminal of 20D, further branch on the way,
Each is connected to each clock terminal CLK of the frequency-dividing flip-flops 21U and 21D. Then, the clear terminals CLR of the flip-flops 21U and 21D
Is a trigger terminal TR from a well-known change detection circuit attached to the digital switch 11 as a tone color changing feature element designating means.
Connected to G. On the other hand, ROM 10 'as tone parameter coefficient storage means
Can individually read data representing tone parameter coefficients of 16-bit configuration stored at four addresses specified by a 2-bit address signal S3, and have output terminals D0 to D15. , 22U-8 and the 2-bit control terminals A and B of the 4-bit data selector as the subtraction pulse data selectors 22D-1... 22D-8 are connected in the following manner. I have. That is, a pair of output terminals D0 / D1 are commonly connected to the control terminals A and B of the pair of data selectors 22U-1 / 22D-1, and similarly, 8 to 16 output terminals D0 / D1 to Data selector 22U-1 / 22D-1 ... 22U-8 / 22U with 8 to 16 D14 / D15
For example, the last pair of output terminals D14 / D15 is commonly connected to the respective control terminals A and B of the last pair of data selectors 22U-8 / 22D-8. It is connected. 0th of the addition pulse data selectors 22U-1... 22U-8.
The third input terminal is commonly connected to the third input terminal, and the commonly connected zeroth input terminal is grounded. The commonly connected first input terminal is connected to the output terminal of the AND gate 23U, and one input terminal of the AND gate 23U is connected to the connection from the complementary output terminal of the flip 21U to the D terminal of the flip-flop. The other input terminal of the AND gate 23U is connected to the added pulse output terminal of the pulse encoder 7. Further, the commonly connected second input terminal is connected to the addition pulse output terminal of the pulse encoder 7, and similarly, the commonly connected third input terminal is connected to the output terminal of the well-known addition pulse pulse multiplication circuit 20U. Have been. Exactly the same connection is made between the control terminals A and B of the subtraction pulse data selectors 22D-1. It is also applied during 21D. The other components are the same as the components denoted by the same reference numerals in FIG. The pulse multiplication circuits 20U and 20D and the flip-flop 21
U, 21D and data selectors 22U-1... 22U-8, 22D-
1... 22D-8 constitute tone color parameter change instructing means. In the above configuration, when the timbre changing characteristic element is newly specified by the digital switch 11 as the voice changing characteristic element specifying means, the flip-flops 21U and 21D are cleared by the trigger signal S6 output from the trigger terminal TRG. At the same time, the two-bit tone color changing feature element designating signal S3 output from the switch 11 causes the ROM 10 'to output one of the four tone color changing feature elements (see Table 1) as the tone color parameter coefficient recording means. Each of the eight unique timbre parameter coefficients is represented by a pair of bits.
16-bit data is output to each pair of output terminals D0 / D1 to D14 / D
Read to 15. The timbre parameter coefficient for each timbre parameter change feature element (0 represented by the state of each pair of bits of 16-bit data read out from the ROM 10 'at one time)
FIG. 5 shows the relationship between the timbre parameters (numerical values represented by 7-bit data read from the RAM 2 at one time) and the timbre parameters (for example, MOD DEPTH as a timbre changing feature element). Is specified, the pair of the 14th bit and the 15th bit output to a pair of bits (for example, a pair of output terminals D14 / D15) of the 16-bit data representing the tone parameter coefficient represents 3. This means that for the timbre parameter (for example, VCO LFO MOD (parameter 7)) corresponding to this pair of bits, the relationship between the operation amount of the parameter change amount specifying means 7 and the timbre parameter change amount to be realized is determined. , As described below, 1: 2
(4: 8), and similarly, the bits of the pair represent 0, 1, and 2, respectively, indicating that the operation amount and the change amount of the corresponding timbre parameter are Are 1: 0, respectively, as described below.
(4: 0), 1: 1/2 (4: 2) and 1: 1 (4: 4). Thus, from ROM 10 ', eight pairs of its output terminals D0 / D1
~ D14 / D15, each reversible counter 3 according to the state of each pair of bits of the data for each 16-bit data representing the tone parameter coefficient.
-1 ... 3-8, the output selection of each pair of data selectors 22U-1 / 22D-1 ... 22U-8 / 22D-8 is controlled. That is, for example, when “0” or “0” representing 0 is output to the pair of output terminals D14 / D15, the pair of data selectors 22U-8 / 22D-8 selects the 0th input terminal, When "1" or "0" representing 1 is output to the output terminal, the data selector selects the first input terminal, and so on.
When "0", "1", "1", and "1" representing "2" and "3" are output, the data selector selects the second and third input terminals, respectively. Then, for example, a pair of data selectors 22U-8 / 22D-
When 8 selects the 0th input terminal, the ground potential constantly appears at the output terminal of the data selector (FIG. 6 (B)), so that the subsequent reversible counter 3-8 does not increase or decrease. , The tone color parameters (parameter 7) distributed and supplied from the RAM 1 are stored as preset values. Then, for example, the pair of data selectors 22U-8 / 22D
When −8 selects the first input terminal, the arrival of the addition pulse Pu or the subtraction pulse Pd from the pulse encoder 7 (the sixth input terminal)
The output from the AND gate 23U during the period in which the complementary output of the flip-flop 21U or 21D which is inverted every time (A) is "1" and for the duration of the pulse Pu or Pd. (C) of FIG. 6, that is, two pulse trains for four pulses Pu or Pd appear at the output terminal of the data selector, and the subsequent reversible counter 3-8 counts the pulse train. Thus, a 4: 2 correlation is realized between the operation amount of the tone color parameter change amount designating means 7 and the tone color parameter change amount to be realized. Subsequently, for example, when the pair of data selectors 22U-8 / 22D-8 selects the second input terminal,
Since a pulse train (FIG. 6 (D)) directly corresponding to the addition pulse Pu or the subtraction pulse Pd appears at the output terminal of the data selector, the subsequent reversible counter 3-8 counts the pulse train, thereby To achieve a 4: 4 correlation. Further, for example, the pair of data selectors 22U-8 / 22D
When −8 selects the third input terminal, a known pulse multiplication circuit 20U is used in response to the addition pulse Pu or the subtraction pulse Pd.
20D, a pulse train (FIG. 6 (E)) generated two at each rising and falling of the pulse Pu or Pd appears at the output terminal of the data selector. , Counting the pulse train, which results in 4:
Achieve 8 correlations. The operation other than the above is the same as that of the first embodiment. <Effects> As described above, according to the present invention, it is not necessary to individually change each of the plurality of timbre parameters for each timbre change feature element, and only one change is required for each timbre change feature element. Since a plurality of timbre parameters can be simultaneously and suitably changed by a command operation, an excellent effect is achieved in that, when emphasizing / suppressing each timbre changing feature, an increase / decrease operation on a plurality of timbre parameters is greatly simplified. You.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 to 3 relate to a first embodiment of the present invention, FIG. 1 is a block diagram showing the configuration thereof, and FIG. 2 is a tone color parameter, tone color changing characteristic element. FIG. 3 is a diagram showing the relationship between (A) the trigger terminal TR of the tone color parameter designating means 2 in the configuration of FIG.
G, (B) clock pulse CLK, (C) enable terminal E of decoder 6, (D) address terminal A0 of RAM1, (E) RA
M1 address terminal A1, (F) RAM1 address terminal A2,
(G) Enable terminal E of the counter 5, (H) Load terminal LD1 of the reversible counter 3-1 and (I) Counter 3-2.
(J) is a time chart showing waveforms appearing at the load terminal LD8 of the same counter 3-8. 4 to 6 relate to a second embodiment of the present invention. FIG. 4 is a block diagram showing the configuration, FIG. 5 is an explanatory diagram corresponding to FIG. 2, and FIG. (A) output terminal of tone color parameter change amount designating means 7 in the configuration of FIG.
(B) Data selectors 22U-1, 22D-1 ... 22U-8, 22D-
8 0th input terminal, (C) the same data selector 22U-1, 2
2D-1... 22U-8, first input terminals of 22D-8, (D) same data selectors 22U-1, 22D-1... 22U-8, second input terminals of 22U-8, (E) same data Selectors 22U-1, 22D-
1 is a time chart showing waveforms appearing at third input terminals of 22U-8 and 22D-8. 1 timbre parameter storage means (RAM) 2 timbre parameter designation means (digital switch) 3-1 3-8 timbre parameter change means (reversible counter) 4 tone signal generation circuit 5 5 bits Counter 6 Decoder 7 Tone parameter change amount designating means (pulse encoder) 8-1 8-8 AND gate 9-1 9-3 AND gate 10, 10 '... Tone parameter coefficient storage Means (ROM) 11 Tone changing feature element designating means (digital switch) 20U, 20D Pulse multiplying circuits 21U, 21D Flip-flops 22U-1, 22D-1 22U-8, 21D-8 Data selector

Claims (1)

(57) [Claims] Tone parameter designation for designating a tone parameter corresponding to a desired tone supplied to the tone signal generation means from among a plurality of tone parameters each corresponding to a plurality of tone colors each defined by a plurality of different tone parameters. Means, tone color changing feature element change instructing means for instructing a change of a predetermined tone color changing feature element with a name indicating a feature to be changed, and the predetermined tone color changing feature element and a plurality of tone colors related thereto. A timbre parameter coefficient storage unit for storing a timbre parameter coefficient group for respectively defining a correlation with a parameter; and the timbre parameter coefficient according to a change instruction of the predetermined timbre change characteristic element by the timbre change characteristic element change instruction unit. Based on the timbre parameter coefficient group stored in the storage means, An electric musical instrument comprising: tone parameter change instructing means for instructing a change in a value of a plurality of tone parameters supplied to the designated tone signal generating means to increase or decrease based on the current value. Timbre parameter setting device. 2. The tone color parameter change instructing means has a temporary storage means for temporarily storing the result of the instruction to change the value of the tone color parameter, and the tone color changing characteristic element change instructing means is instructed a plurality of times by the tone color changing characteristic element changing instruction means. In this case, the value of the timbre parameter is changed or instructed by a change instruction immediately before the timbre change characteristic element by the timbre change characteristic element change instructing means, and the value is increased or decreased based on the value stored in the temporary storage means. 2. The tone color parameter setting device for an electronic musical instrument according to claim 1, wherein the change instruction is issued. 3. The timbre change characteristic element change instructing means can instruct a change of a desired timbre change characteristic element among a plurality of types of timbre change characteristic elements, and the timbre parameter coefficient storage means is provided for each of a plurality of types of timbre change characteristic elements. A plurality of timbre parameter coefficient groups are stored correspondingly, and the timbre parameter change instructing means is based on a timbre parameter coefficient group corresponding to the timbre changing characteristic element whose change is instructed by the timbre changing characteristic element changing instructing means. And a temporary storage unit for temporarily storing a result of the instruction to change the value of the timbre parameter, wherein the plurality of timbre change features are designated by the timbre change characteristic element change instruction unit. When the element changes are sequentially instructed, the value of the timbre parameter is changed by the timbre change characteristic element change instructing means. Timbre parameter setting apparatus for an electronic musical instrument of the previous change indicated by an increase or claims to change instructing the decrease described first term to the value stored in the temporary storage means is changed instruction as a reference element. 4. The timbre change characteristic element change instructing means is provided in common with the timbre change characteristic element specifying means for specifying a timbre change characteristic element to be changed among a plurality of types of timbre change characteristic elements and the plurality of timbre change characteristic elements. And a timbre parameter change amount designating means for designating a change amount of the timbre parameter, based on a timbre parameter coefficient group corresponding to the timbre change feature element designated by the timbre change feature element designating means. 4. The timbre parameter setting device for an electronic musical instrument according to claim 3, wherein a value of said plurality of timbre parameters is changed and instructed in accordance with a change amount designated by said instruction means. 5. The timbre parameter change instructing means, in accordance with the designation of the timbre parameter by the timbre parameter designation means,
By invalidating the contents stored so far stored in the temporary storage means, a new change of the timbre change characteristic element is performed by the timbre change characteristic element change instruction means after the timbre parameter specification means is specified by the timbre parameter specification means. Until a tone signal is designated, a tone signal is generated by the tone signal generating means based on a value of a tone parameter newly designated by the tone parameter designation means, which has not been changed yet. 4. The timbre parameter setting device for an electronic musical instrument according to any one of the second and third ranges. 6. The timbre parameter coefficient group defines the correlation between the predetermined timbre change characteristic element and a plurality of timbre parameters related thereto in three or more stages. The timbre parameter change instruction means includes: 2. The electronic musical instrument according to claim 1, wherein the instruction for changing the values of the plurality of timbre parameters is made in three or more steps based on the step indicated by the timbre parameter coefficient group in response to the change instruction of the change characteristic element. Tone parameter setting device. 7. 2. The timbre parameter setting device for an electronic musical instrument according to claim 1, wherein said timbre parameter coefficient storage means is constituted by a ROM.