JPH0634171B2 - Waveform display device - Google Patents

Description

The present invention relates to a waveform display device for displaying a waveform.

[Background of the Invention]

Conventionally, there is a waveform display device for displaying the waveform stored in the storage means (for example, Japanese Patent Laid-Open No. 57-2097).
issue). Furthermore, there is also a waveform display device capable of magnifying and displaying a waveform at an arbitrary magnification (for example, Japanese Patent Laid-Open No. 51-
No. 1133653).

However, for example, the above-mentioned Japanese Unexamined Patent Publication No. 51-113653.
The waveform display device of No. 1 merely displays the waveform currently being displayed by enlarging or reducing it. Therefore, when the waveform is expanded, the expanded waveform corresponds to any portion of the original waveform. There was a drawback that you would lose sight of it. The waveform display device of Japanese Patent Laid-Open No. 51-113653 takes a slight allowance for this point, and even when the displayed waveform is expanded more and more, the same point (sample point) of the displayed waveform is always displayed at the center of the display. ) Is displayed so that it will come.

However, since the display width of the display is constant, as the display waveform is expanded more and more, the display range of the original waveform becomes narrower.

As described above, the waveform display device of the above-mentioned Japanese Patent Laid-Open No. 51-113653 keeps the point at the center of the display when the display waveform is expanded more and more, but the expanded waveform is the same as the original waveform. The user could not recognize which part (range) was displayed.

[Object of the Invention]

An object of the present invention is to realize a waveform display device that allows a user to recognize which part of the original waveform the expanded waveform corresponds to, even when the displayed waveform is expanded more and more.

[Main points of the invention]

In order to achieve the above object, the present invention provides first display means for displaying a waveform stored in a storage means and the first display means.
Second display means for enlarging and displaying a part of the waveform displayed on the display means, and the waveform displayed on the second display means of the waveform displayed on the first display means. The waveform display device is configured by the third display means for displaying which part, and the original waveform, the partially enlarged waveform of the original waveform, and the position of the partially enlarged waveform in the original waveform are displayed. The point is.

〔Example〕

 The present invention will be described in detail with reference to an embodiment shown in the drawings.

FIG. 1 shows its circuit configuration. Reference numeral 1 is a waveform information processing apparatus.
It has a CPU 2. The CPU 2 is composed of, for example, a microprocessor and controls the entire processing function of the waveform information processing apparatus 1.

Then, other devices are connected to the CPU 2 via the bus line BUS. That is, reference numeral 3 is a working memory, which is used when the CPU 2 executes arithmetic processing according to the control program stored in the control ROM 4. That is, the working memory 3 stores an area for storing data for a main graph (MAIN GRA), which will be described later, and a sub graph (SUB GRA).
In addition to an area for storing data for the cursor and a cursor position data area for generating data according to the position when the cursor is moved, various areas are provided.

Reference numeral 5 is a keyboard for issuing various commands to the CPU 2. Further, in this embodiment, a digitizer 6 is provided as an input device. The digitizer 6 has an operator 6-1 which is manually moved on the tablet plane, and the operator 6-1 is further provided with a switch 6-2. The digitizer 6 supplies the CPU 2 with information indicating the position of the operator 6-1 (position on the XY plane) and a signal indicating whether or not the switch 6-2 is on-operated. .

The CPU 2 is also connected to the PCM waveform memory 7. The PCM waveform memory 7 has, for example, an area of 32 pages (blocks), and can store digital waveform information representing one to a plurality of waveforms.
It should be noted that one of the 32 pages is used for preliminary recording before the trigger signal is applied when waveform information is recorded. Can be used for

The PCM waveform memory 7 can transfer data with the disk 8 (floppy disk or magnetic disk), and can transfer and record a plurality of waveform information selectively.

Further, reference numeral 9 is a display register for recording display data for the display device 10.
2, the contents are rewritten.

The display device 10 may be a color CRT or an LCD device capable of color dot matrix display, and various display devices can be used.

The waveform information processing apparatus 1 is connected to the electronic musical instrument 12 via the interface (I / O) 11. An electronic musical instrument 12 has an interface (I / O) 13 which is connected to the interface 11 and inputs / outputs data, and is connected to the CPU 14 via the interface 13. The CPU 14 is composed of, for example, a microprocessor and controls all processes of the electronic musical instrument 12.

A keyboard (KBD) 15 having a plurality of performance keys is connected to the CPU 14, and the keyboard 1
The electronic musical instrument 12 generates a musical tone corresponding to the operation of 5. That is, the CPU 14 controls the read / write control unit 16 for reading and writing, and at the time of writing,
An external sound signal input from the outside is given to the sample hold (S / H) circuit 17 and sampled, and then A / D
It is converted into a digital signal (PCM signal) by the converter 18 and recorded in the PCM waveform memory 19. Therefore, PCM
In the waveform memory 19, the waveform signals from the beginning to the end of the waveform are sequentially sampled and digitally recorded.
Then, for example, in 32 pages (blocks), this memory 1
9 is also dividable and can record a single waveform information or a plurality of waveform information.

Also, the read / write control unit 16 is configured to read the PCM waveform memory 19 at a speed according to the operation of the keyboard 15 during reading.
The waveform information can be read out, given to the D / A converter 20, converted into an analog signal, and then emitted through the amplifier 21 and the speaker 22.

Further, the read / write control unit 16 reads the contents of the PCM waveform memory 19, and the CPU 14 and the interface 13 are read.
The waveform is transferred to the waveform information processing apparatus 1 via the
It is possible to input to the M waveform memory 7. Therefore,
The waveform information processing apparatus 1 can perform correction processing based on the waveform information sampled by the electronic musical instrument 12.

On the contrary, the PCM waveform memory 7 in the waveform information processing device 1
Can be input to the electronic musical instrument 12 via the interface 11 and can be set in the PCM waveform memory 19.

Next, the display state of the display device 10 will be described with reference to FIG. FIG. 2 shows an initial screen of the display device 10.

In the figure, MENU1 to MENU7 indicate menus (modes) of arithmetic processing executed by the waveform information processing apparatus 1.
The processing in each of the MENU1 to MENU7 is simply as follows.

First, the MENU 1 is a mode for inputting a waveform using the digitizer 6, and when this mode is entered, the waveform input is displayed on the screen and its contents are input to the PCM waveform memory 7. In the figure, the letters WAVE GEN indicating the wave generator are displayed.

The MENU 2 is a mode in which a waveform or the like is processed by a graphic. In the figure, the character indicating the graphic is displayed as GRAPH. In this mode, waveforms and parameters can be modified and deleted. The details will be described later.

The MENU 3 is a mode for loading waveform information from the disk 8 to the PCM waveform memory 7, and is displayed as LOAD.

On the contrary, the MENU 4 is a mode for saving the waveform information from the PCM waveform memory 7 to the disk 8 and is displayed as SAVE.

The MENU 5 is a mode for inputting waveform information from the PCM waveform memory 19 of the electronic musical instrument 12 to the PCM waveform memory 7 of the waveform information processing apparatus 1, and is indicated as WAVE IN.

The MENU 6 is a mode for outputting waveform information from the PCM waveform memory 7 of the waveform information processing device 1 to the PCM waveform memory 19 of the electronic musical instrument 12 on the contrary, and is indicated as WAVE OUT.

The MENU 7 is a parameter edit (PARAMETER EDIT) mode in which various parameters are input by numerical values, and is indicated as PRA ED.

Then, by moving the manipulator 6-1 of the digitizer 6, the mouse display unit MOUSE is moved to each of the MENUs 1 to 7.
To the display position, and switch 6-2 at that position.
By turning on, that mode is selected,
The screen of the display device 10 changes.

MAP in FIG. 2 is a memory map display showing the state of memory use, and there are 31 memory map displays, which show the already-stored pages of the PCM waveform memory 7 as described later. Blanking is now underway. Each waveform can be saved with a name, and the name is displayed in the NAME column. Now, Fig. 1 shows blanking in the initial state, but a maximum of 8
Can be displayed individually. By displaying the NAME and the MAP in the same color and changing the color for each waveform, it is possible to clearly distinguish a plurality of waveforms when they are simultaneously displayed.

Then, on this initial screen, the mouse display M
When the OUSE is moved to the LOAD position of the MENU 3 and the switch 6-2 is turned on, the display screen shown in FIG. 3 is displayed.

That is, 10 kinds of waveforms are recorded on the disk 8 now. That is, what is displayed on the screen as DISK is the name of the waveform and its page number. For example, the name of the first waveform is "SINEWAVE", which is 2
Uses storage capacity for pages.

In FIG. 3, SUBFUNC1 indicates a sub function for designating the display of the waveform name in the file of the disk 8, and FILE is displayed on the screen. Also SUBF
UNC2 indicates a sub function for changing the display screen to the next page and is displayed as NEXTP. Also
SUBFUNC3, on the contrary, indicates a subfunction to be displayed on the previous page and is displayed as BEFORP. Also S
UBFUNC4 is a sub function used when canceling a predetermined transfer, and is indicated as ABORT. SUBFUNC5
Is a sub function that actually performs the transfer,
It is displayed as START. Also SUBFUNC6
Is a sub function that returns to the initial screen, and RE
It is displayed as TURN.

By the way, the screen shown in FIG.
It is shown that two types of waveform information have already been transferred from the disk 8 to the PCM waveform memory 7 by moving OUSE. That is, in the waveform name display field NAME, "SINW
"AVE" and "SIN312" are displayed, and since the respective waveforms have a capacity of 2 pages and 7 pages, 9 MAP display bodies of the tortle are colored.
Now, two of these MAP display bodies have the same color as the color of the SINWAVE font, and seven of them have the same color as the color of the SIN312 font.

Further, the display field "F22" of FREE in FIG. 3 is PCM.
This indicates that 22 pages of the waveform memory 7 are unused.

Therefore, in the state of the screen in FIG. 3, "SINEWAVE" and "SIN31" are stored in the PCM waveform memory 7.
It means that the information of 9 pages in total of the two waveforms “2” has been transferred from the disk 8.

Next, the mouse display MOUSE is moved to a position for designating the graphic mode of the MENU 2 by operating the operator 6-1 of the digitizer 6, and the switch 6-2 is operated to display a waveform graphic.

FIG. 4 shows a display state in this graphics mode. This screen will be described first. The screen in this graphics mode is roughly divided into a main graphics area (indicated by MAIN GRA in the figure), a subgraphic area (indicated by SUB GRA in the figure) and other areas.

This subgraph area SUB GRA (that is, the first
Display means) for displaying the entire specified waveform, and a specific address of the waveform data from the PCM waveform memory 7 to the area for storing the data in the main graphic area MAIN GRA of the working memory 3. Only the data is transferred, which is sent to the display register 9 for display. That is, the subgraphic area SUB GRA compresses the actual waveform information, that is, extracts and displays sample points of the waveform while skipping every predetermined interval.

A page guide (indicated as PGUIDE in the figure) surrounded by a square is provided in the main graphic area MAIN in the sub-graphic area SUB GRA.
The range (page) enlarged and displayed on GRA (namely, 2nd display means) is shown.

The size of the page guide PGUIDE is determined by the magnification display area (denoted by MAG in the figure), and the X-axis magnification is designated by Xmag, and the Y-axis magnification is determined. When Ymag is specified and is respectively "X1" and "X1", the waveform information for one page of the PCM waveform memory 7 is displayed as it is in the main graph area MAIN GRA. The larger the magnification of, the greater the amount of waveform information displayed in the main graphic area MAIN GRA.
However, as the magnification is increased, the number of skips increases when the sample points of the waveform are skipped and displayed.

For example, when the X-axis magnification is “X1” and the X-axis is described, when “X1” is set, all sample points are read and displayed, and when “X2” is set, 1 is set for two sample points. One display point (that is, one skip), four sample points when "X4" (three skips), and one sample point when eight sample points (X8) (three skips) That is, 7 skips).

The same applies to the Y axis, and when the magnification of the X axis is fixed,
The higher the Y-axis magnification, the more the peak value is compressed. Therefore, although the crest values of the sample points at different points are actually different from each other, the rate of taking the same position on the screen increases.

Then, in accordance with the selection of this magnification, the page guide PGU
The area designated by IDE changes. Also, there is "ALL" in this magnification display area MAG.
This is to simply enlarge the display of the subgraphic area SUB GRA and display all the parts in the main graphical area MAIN GRA.

Accordingly, in response to the selection of the magnification, the CPU 2 reads the data of the page of the PCM waveform memory 7 and stores it in the data areas of the main graph area and the sub graph area of the working memory 3, and then the display device 1
Transfer to display register 9 for display at 0.

Further, as shown in FIG. 4, when the mouse display MOUSE is located in the main graphic area MAIN GRA, a cross cursor CAR having that point as an intersection is displayed. Then, the value indicating the position of the cross cursor is displayed in the cursor display field (shown as CAR VALUE in FIG. 4).

That is, this main graphic area MAIN GRA
Is from 26.5 msec to 38.6 msec as shown in FIG.
The waveforms up to are displayed at the levels of +2048 to -2048, but the intersection of the cross cursor CAR is 3
The cursor value display field CAR VALUE indicates that the level is 2.56 msec, 1152. The value of this cursor view display field CAR VALUE is
It is calculated by the CPU 2 and is stored and displayed in the cursor position data area of the working memory 3. The CPU 2 changes the contents of the area of the working memory 3 according to the movement of the mouse display MOUSE.

Further, in this graphic mode, in addition to the above-described sub function SUBFUNC6, a sub function for editing the waveform information (WAVE E
SUBFUNC7 displayed as D and a sub function for editing parameters (PAR E in the figure)
There is a SUBFUNC 8) displayed as D. The details of each will be described later.

Fig. 5 shows C when this graphic mode is entered.
It shows a series of processing executed by PU2. First, in step S ₁ , the mouse display MOUSE is shown at a specified position on the screen in the display device 10 by the signal input from the digitizer 6.

Then, in step S ₂ , the mouse display unit MOU
SE is, it is determined whether the main graphic area MAIN within GRA, if the process proceeds to step S ₃ When a determination of YES is, displays the crosshair CAR as described above, to calculate data indicating the intersection, The cursor is displayed in the CARRY VALUE display column CAR VALUE.

And then proceeds to step _{S 2.} Also, when the determination in step S _{2 is} NO, the process also proceeds to step S ₄ .

Step S ₄ is a normal routine, the details of which are as follows.
It is shown in FIG. That is, in step N ₁ of this normal routine, the mouse display MOUSE is displayed on the screen of the display device 10.

And then proceeds to step N _2, it is determined whether or not switch 6-2 provided operator 6-1 digitizer 6 is turned on, nothing to step S ₅ illustrated in Figure 5 if it is not operated move on.

If switches 6-2 of the operation element 6-1 is turned on, followed by step _{N 2,} the process proceeds to step _{N 3,} determines whether the mouse display body MOUSE in any position.

The mouse display MOUSE is displayed in the magnification display area M.
When it is detected in AG proceeds to step N _4, a process for scaling CPU2 performs. At this time, the area for displaying the designated magnification is displayed in a color different from the other colors, and it becomes clear from the screen which magnification has been selected. In step N ₃ , the mouse display MO
If USE is in the waveform name display field NAME, the process proceeds to step N ₅ after step N ₃ to read the newly designated waveform information from the PCM waveform memory 7 by the CPU.
2 executes. And continued, in order to step proceeds to the N _6, unexpected must be re new to display the waveform overall picture, CPU
2 changes the display of the subgraphic area SUB GRA. Further, in step N ₃ , a mouse display
When MOUSE detects that it is in the sub-graphic area SUB GRA, the position of the page guide PGUIDE proceeds to step N ₇ is moved to the position of the mouse display body MOUSE, thereafter, waveform page designated by the page guide PGUIDE The information is read from the PCM waveform memory 7 and stored in a predetermined area in the working memory 3.

Further, in step N _3, when the mouse display body MOUSE at a position other than the above, the process proceeds to step N ₈ as non operating rate Chillon. Also, the above-mentioned step N
Even after the processing of ₄ , N ₆ , and N ₇ is completed, the process proceeds to step N ₈ .

In step _{N 8,} the main graphic area MAIN
The waveform data already rewritten in the working memory 3 to change the GRA display is displayed in the display register 9
To be displayed on the display device 10.

Then after processing of the step N _8, and proceeds to step S ₅ of the flow shown in FIG. 5. In step S ₅ , the mouse display MOUSE is a sub function SUBFU.
It is in a position where NC6 to SUBFUNC8 are displayed, and it is judged whether or not the switch 6-2 of the operator 6-1 of the digitizer 6 is turned on.

If nothing is operated, it returns to step S ₁ as a non-operation. Further, if the switch 6-2 is operated is detected at the position of SUBFUNC7, the process proceeds to step _{S 6,} returns to step _{S 1} after executing the processing of the wave Edei bract. Also SUBFUNC
If switch 6-2 is detected to have been turned on at the position of 8, the process proceeds to step S _7, after which step S
Return to ₁ . When it is detected that the switch 6-2 is operated at the position of the SUBFUNC 6, the initial state is set and the screen of the display device 10 becomes as shown in FIG.

Next, referring to FIG. 7, the screen on the wave edit will be described. When the operator 6-1 of the digitizer 6 is moved,
As mentioned above, the main graphic area MAIN G
The cross cursor CAR moves within the RA. Then, when the switch 6-2 provided on the operator 6-1 is turned on and off once, the X axis of the cross cursor CAR is fixed at the value of the X axis at that point, and the value of the Y axis at the time of being turned on and off next. Input as amplitude value.

Also, with the switch 6-2 kept on, the operator 6
When -1 is moved on the tablet, a new amplitude value is continuously input along with the operation, and the display state changes.

FIG. 7 shows a state in which a part of the waveform is rewritten in this way. If the display magnification is not "X1",
Since rough data is stored in the PCM waveform memory 7, interpolation is performed. That is, linear interpolation is performed from the values of two points that are input, and when the X-axis magnification is "X2", one point is in the middle, when "X4", three points are in the middle and "X
In the case of "8", the amplitude values at seven points are calculated in the middle to obtain the waveform information.

Further, at the time of this wave edit, new subfunctions SUBFUNC9 and 10 other than those described above are displayed. This sub function SUBFUNC9
Is for rewriting the display content of the sub graphic area SUB GRA by designating after editing the content of the main graphic area MAIN GRA. In addition, sub function SUBFUNC10
When is designated, the mode returns to the graphic mode as shown in FIG.

FIG. 8 shows a processing flow of such a wave edit, which is jumped from step S _{6 of} FIG.

Then, in step W _1, the position of the mouse display unit MOUSE is determined by the signal from the digitizer 6, the position is displayed on the screen, and the process proceeds to the next step W ₂ . That is, this step W ₂
In the normal routine shown in FIG. 6, after the series of processes described above, the process proceeds to step W ₃ . That is, when it is judged to be off at step N ₂ in FIG. 6 and after the processing of step N ₈ is completed, jump back to step W ₃ .

In step _{W 3,} whether or not Jiyatsuji mice display body MOUSE is in the main graphic area MAIN GRA, proceed to NO if step _{W 4,} step _{W 5} when subfolder Ank Chillon SUBFUNC9 is designated
Go to and go to the subgraph area SUB GRA
The waveform information stored in the M waveform memory 7 is displayed.

Other subfunctions, that is, SUBFUNC 6-8, S
When UBFUNC10 is specified, then it jumps to step _{S 1} shown in FIG. 5, so to perform the respective processing. Further, when the mouse display MOUSE is located at a position other than the sub function, the operation becomes non-operation and returns to step W ₁ .

When the YES determination is made at the step _{W 3,} and proceeds to the next step _{W 6.} At step W ₆ , cross cursor C on main graph area MAIN GRA
AR is displayed and the cursor view display area CAR V
The position information of the intersection of the cross cursor CAR is displayed on the ALUE.

Then proceed to the next step W _7, to Jiyatsuji whether switch 6-2 of the operation element 6-1 is turned on. If it is not turned on, the process returns to step W ₁ . If it is determined to be ON in step W ₇ , the next step W ₈
To proceeds to display the mouse display body MOUSE again, then step W ₉ in proceeds is continuously switch 6-2 operators 6-1 detects whether the on state, it is detected that have summer and an off state that now and determines the position of the mouse display body mOUSE proceeds to step W _10, the value of X-axis at that time CPU2 is read Moreover, to secure the display of the X-axis of the cross cursor CAR. And then it determines whether the switch 6-2 of the operation element 6-1 at step W ₁₁ is turned on.

If it determined and displayed together the position of the mouse display body MOUSE returns to step W ₁₀ to be turned on again to the operation of the operation element 6-1. At this time the cross cursor CAR
The Y-axis of is moved, but the X-axis remains fixed as described above.

When the the switch 6-2 at step W ₁₁ is turned on is detected, the cursor advances to step W ₁₂ Y
The axis value is read, the CPU 2 stores the data, and rewrites the contents of the display register 9 so as to be displayed on the display device 10 as a new waveform sample point.

In this way, when the switch 6-2 is turned on and off once, the position (X coordinate) of the mouse display MOUSE on the X axis is stored and the address to be rewritten is determined. Then, by the next on / off operation of the switch 6-2, the position on the Y axis (Y coordinate) indicated by the mouse display MOUSE is stored as the amplitude value of the waveform, and the waveform shape is corrected.

Further, when the determination is in the ON state at step W ₉ is made to proceed to step W _13, to determine the mouse display body MOUSE display position, then detected whether switch 6-2 proceeds to step W ₁₄ is in the ON state If it is on, step W
_{The process} proceeds to step ₁₅ and the values of the X and Y axes designated by the mouse display unit MOUSE are stored, and the values are displayed on the screen as sampling points of a new waveform.

Then proceed to step W ₁₃ . Switch 6-
2 executes repeatedly the step W ₁₃ to _W-15 until turned off, slide into changing the shape of the continuous waveform on the main graphic area MAIN GRA. Then, in step W _14, the switch 6-2 is detected to have been turned off, then the process proceeds to step W _16. Also, step W
It advances to continuing step W ₁₆ to _12.

This step W ₁₆ interpolates the crest value obtained by the above-mentioned processing according to the display magnification as described above, and executes the PCM.
The waveform memory 7 is transferred and stored.

When the processing of step W ₁₆ is completed, the process returns to step W ₁ and the same processing is performed thereafter to perform the waveform editing.

Next, the operation of the step 7 shown in FIG. 5 at the time of parameter editing will be described. FIG. 9 shows one display state of the screen at that time. That is, at the time of this parameter edit, the subfunctions SUBFUNC11 to 1
The parameters indicated by 4 are the main graphic area MA.
It is possible to input while moving the mouse display MOUSE on INGRA.

First, the SUBFUNC 11 to 14 will be described. GEN ST means a general start, and reading is started when a musical tone is actually generated from which point of the waveform stored in the PCM waveform memory 7. GEN ED means a general end, and conversely specifies at which point reading is completed. Further, a start address and an end address for repeatedly reading a specific section for generating a continuous tone are REP START which means repeat start and REP ED which means repeat end.

At the time of this parameter edit, when the mouse display MOUSE is moved to each sub function position and the switch 6-2 is turned on, the position becomes different in color, and in that state, the mouse display is changed. MO
If USE is moved to the main graphic area MAIN GRA, and then the switch 6-2 is operated at an appropriate point, a cursor indicating that position is displayed.

That is, a long GST line appears on the screen for the sub function SUBFUNC11, and a long GED line for the sub function SUBFUNC12.
Sub-function SUBFUNC1
For 3 the short line of RST goes on the screen and for subfunction SUBFUNC 14 the line of short RED goes on the screen. In addition, lines GST and GED
The distinctiveness can be improved by making the color of the line and the color of the lines RST and RED different.

And these displays are the subgraphic area SUB.
This is also done in GRA, and a horizontally long rectangular mark REP is displayed at the repeated portion.

In this way, it is possible to specify the position of the start, end, or repeat start, end while observing the waveform displayed on the display device 10. Is set to the designated position as described above, it is possible to reliably prevent generation of noise such as a click sound.

FIG. 10 shows a processing flow of the CPU 2 at the time of this parameter edit, and is a detail of step S ₇ of FIG.

First, in step P ₁ , the normal routine shown in FIG. 6 is executed, and then the jump back to step P ₂ is performed. And in this step _{P 2,} detecting whether subfolder anc Chillon SUBFUNC6~8,10~14 described above is designated. If nothing is operated, the process returns to step P ₁ . In addition, sub function SUBF
UNC11~14 proceeds to step _{P 3} If is specified, if the other subfolder anc Chillon SUBFUNC is specified, the process returns to the flow of the graphic mode shown in Figure 5.

When proceeding to step P _3, first, the position of the mouse display body, and follow connexion determined position of the operator 6-1 digitizer 6 and displays. At the next step P ₄ , the mouse display MOUSE is displayed on the main graphic area MAIN G.
Whether to Jiyatsuji it is within RA, along with displaying the cross cursor CAR proceed to step P _5, if any, causes the position displayed in the cursor burr user display column CAR VALUE. If the determination of NO is made in step _{P 4,} returns to step _{P 1.}

Then, following step P ₅ , the CPU 2 determines that step P
₆ is executed and it is judged whether or not the switch 6-2 of the operator 6-1 has been turned on. If there is no operation, the process returns to step P ₁ , but if the on operation is performed, the process proceeds to step P ₇ , and the position specified by the mouse display MOUSE, that is, the position of the intersection of the cross cursor CAR is stored,
An address designated as any of general start, end, repeat start, and end is set, and a display corresponding to the main graphic area MAIN GRA and the sub graphic area SUB GRA is performed. Then, after step P ₇ , step P ₁ is executed, and in the same manner, each parameter is input while visually recognizing the waveform.

Next, the operation when the parameter edit mode of the MENU 7 is designated will be described.

FIG. 11 shows a display state of the display device 10 in the parameter edit mode. In the figure, VOLUME is a volume display portion, and by moving the mouse display body, the display body of the volume knob moves and the level changes greatly. Also, UP / DOWN switch display UP
There are SW and DOWN SW, and bring the mouse display unit MOUSE to that position, and switch 6-
By turning ON / OFF the parameter 2, the value of the parameter is gradually changed in the up or down direction.

TOTALPARA is a parameter display field that displays the entire parameters of the musical sound.
Is a parameter display field relating to the waveform information of the musical sound. After specifying which parameter of these display fields to set with the mouse display MOUSE, the above-mentioned volume display VOLUME or up / down switch display UPSW is displayed. By moving the mouse display MOUSE to the position of / DOWNSW and operating the operation element 6-1 and turning on the switch 6-2, the parameter value can be digitally input.

That is, next to the display of each parameter, for example, "MASTERTUNE", the value "56" of that parameter is displayed. In this way, the level of each parameter can be input only by operating the operator 6-1.

As described above, the load mode (MENU3), the graphic mode (MENU2) and the parameter edit (MENU)
Although the processing of 7) is described in detail, CP is also applied to other modes.
U2 executes a predetermined process according to the control information stored in the control ROM 4, but details thereof will be omitted.

Although one embodiment of the present invention has been described in detail above, according to this embodiment, the main graphic area MAIN G
The RA and the subgraphic area SUB GRA are divided into an enlarged view of the main part of the waveform and an overall view, so that the waveform can be easily grasped and corrected, and the parameters can be set easily. Also,
The level of the position specified at the intersection of the cross cursor CAR,
Since the cursor value display field CAR VALUE for displaying the time is provided, it is possible to instantly understand the peak value and the time of the input parameter.

Further, since the display magnification of the main graphic area MAIN GRA can be changed variously, it is very effective in recognizing and correcting the waveform, displaying the parameter, detecting the zero cross point, and the like.

In addition, when the display magnification of the main graphic area MAIN GRA is increased and the waveform is corrected, the CPU 2 automatically interpolates the waveform and generates appropriate waveform data. In addition, it is possible to input waveform information with detailed addresses.

Further, in the above-described embodiment, since the positions of the general start, end, repeat start, and end are displayed together with the waveform display, it is possible to prevent an input error of each parameter and to visually check the position of each parameter. Well understood.

In the case of parameter edit (MENU7), the volume display VOLUME and the up / down switch display UP / DOWNSW are displayed, so that there is no input error when inputting each parameter, and there is no need to operate the numeric keypad or the like. Digital input is possible and convenient.

In the above embodiment, two display areas, that is, a main graphic area and a sub graphic area are provided on one screen for display, but they are displayed as separate display panels. Good.

Further, although the waveform information processing apparatus and the electronic musical instrument are separately configured in the above-described embodiment, it is of course possible to integrally configure them.

〔The invention's effect〕

As described above in detail, according to the present invention, the first display means for displaying the waveform stored in the storage means, and the first display means
Second display means for enlarging and displaying a part of the waveform displayed on the display means, and the waveform displayed on the second display means of the waveform displayed on the first display means. Since the waveform display device is configured by the third display means for displaying which part, the original waveform, the partially enlarged waveform of the original waveform, and the position of the partially enlarged waveform in the original waveform are displayed. Even when the displayed waveform is expanded more and more, it is possible to realize a waveform display device in which the user can recognize which part of the original waveform the expanded waveform corresponds to.

[Brief description of drawings]

The drawings show one embodiment of the present invention, FIG. 1 is a circuit configuration diagram thereof, FIG. 2 is a view showing an initial display state of a display device, and FIG. 3 is a view showing a display state of a display device in a load mode. , 4th
FIG. 5 is a diagram showing a display state of the display device in the graphic mode, FIG. 5 is a flow chart diagram showing processing in the graphic mode, FIG. 6 is a flow chart diagram of a normal routine, and FIG. 7 is a display device. FIG. 8 is a flow chart showing the processing during the wave edit, FIG. 9 is a flow chart showing the processing during the wave edit, FIG. 9 is a view showing the display on the display device during the parameter edit, and FIG. FIG. 11 is a flow chart showing the processing at the time of parameter editing, and FIG. 11 is a diagram showing a display state of the display device in the parameter editing mode. 1 ... Waveform information processing device, 2 ... CPU 3 ... Working memory, 4 ... Control ROM, 6 ... Digitizer, 6-1 ... Operator, 6-2 ... Switch, 7 ... PCM waveform memory , 8 ... Disk, 9 ... Display register, 10 ... Display device, 12 ... Electronic musical instrument, 19 ... PCM waveform memory, MAIN GRA ... Main graph area, (second display means), SUB GRA ... Subgraph area (first display means), MOUSE ... mouse display.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shigenori Morikawa 3-2-1 Sakaemachi, Hamura-cho, Nishitama-gun, Tokyo Satoshi Watanabe, Examiner, Hamura Technology Center, Casio Computer Co., Ltd.

Claims (2)

[Claims] 1. Storage means for storing a waveform, first display means for displaying the waveform stored in the storage means, and a part of the waveform displayed on the first display means is enlarged. Second display means for displaying, and third display means for displaying which part of the waveform displayed by the first display means the waveform displayed by the second display means is. A waveform display device having. 2. A storage means for storing the waveform, a first display means for displaying the waveform stored in the storage means, and a part of the waveform displayed on the first display means enlarged. Second display means for displaying, a third display means for displaying which part of the waveform displayed by the first display means the waveform displayed by the second display means, and A waveform display device comprising: a correction unit for correcting the waveform displayed by the second display unit; and a re-storing unit for re-storing the waveform corrected by the correction unit in the storage unit.