JP2550872B2 - Waveform display method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waveform display method for displaying a waveform stored in a memory.

[0002]

2. Description of the Related Art Conventionally, a waveform display device for displaying a waveform stored in a memory has been considered. For example, it is shown in JP-A-57-2097.

[0003]

However, when the waveform stored in the memory is designated and read out, the waveform is displayed.
The name of the waveform you want and its size (data capacity)
Or hard to, in the case of the screen displays the specified waveform,
For example, if the waveform has a large capacity, the entire waveform and its
There is a problem that it is not possible to display both the part and the part at the same time . Therefore, the present invention has been made in view of such circumstances, and the size of the waveform to be displayed can be easily visually recognized .
Well, even if the waveform has a large capacity, the entire waveform and its details
The purpose is to realize a waveform display method capable of displaying simultaneously .

[0004]

A waveform display method according to the present invention is a method for displaying each waveform stored in a storage means for storing the waveform.
The waveform name and waveform capacity are respectively displayed according to the identification code.
Waveform name and first display processing to display the same form on the surface
Corresponds to the waveform name specified by the specifying means
A read process of reading the first waveform from the storage means according to the identification code, and a first read by the read process .
The second waveform obtained by thinning and compressing the waveform value of the waveform is displayed in the first display area on the screen, and a part of the second waveform displayed in the first display area is enlarged. Third
Is displayed in a second display area on the screen.

[0005]

In the waveform display method according to the present invention, the waveform identification code
Waveform name and its name stored in the storage means based on the
The waveform capacity of each is displayed in the same form on the screen, and the
The identification code corresponding to the waveform name specified by the fixed means
Therefore, when the first waveform is read from the storage means, the first waveform
The second waveform, which is obtained by thinning and compressing the waveform values of
Is displayed in the first display area of
The third which expanded a part of the second waveform displayed in the area
The waveform of is displayed in the second display area on the screen. to this
This makes it easier to see the size of the waveform you want to display.
Well, even if the waveform has a large capacity, the entire waveform and its details
Can be displayed at the same time.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS The invention will be described in detail with reference to an embodiment shown in the drawings. FIG. 1 shows the circuit configuration thereof, and reference numeral 1
Is a waveform information processing apparatus, and this waveform information processing apparatus 1
It has a CPU 2 inside. The CPU 2 is composed of, for example, a microprocessor, and controls the entire processing function of the waveform information processing apparatus 1.

The CPU 2 and the bus line BUS
Other devices are connected via the. 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 has an area for storing data for a main graphic (MAIN GRA), which will be described later, and a sub graphic (SU).
B GRA), an area for storing data, a cursor position data area for generating data according to the position when the cursor is moved, and various other areas.

Reference numeral 5 denotes 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 for manually moving on the tablet plane. The operator 6-1 further includes a switch 6
-2 is provided. CPU from this digitizer 6
2, information indicating the position of the operation element 6-1 (position on the XY plane) and a signal indicating whether or not the switch 6-2 is turned on are supplied.

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

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

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

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

The waveform information processing apparatus 1 is connected to an electronic musical instrument 12 via an interface (I / O) 11. In the electronic musical instrument 12, the interface 11 is provided.
An interface (I
/ O) 13 and is connected to the CPU 14 via this 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 musical tones corresponding to the operation of the keyboard 15 are generated by the electronic musical instrument 1.
It occurs from 2. 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 sampling is performed. Digital signal (PC
M signal) and recorded in the PCM waveform memory 19. Therefore, in the PCM waveform memory 19, the waveform signals from the beginning to the end of the waveform are sequentially sampled and digitally recorded. The memory 19 can also be divided into, for example, 32 pages (blocks), and can record a single waveform information or a plurality of waveform information.

The read / write control unit 16 reads the waveform information from the PCM waveform memory 19 at the speed according to the operation of the keyboard 15 at the time of reading, and the D / A converter 20
After being converted into an analog signal, the sound can be 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, transfers them to the waveform information processing apparatus 1 via the CPU 14 and the interface 13, and finally inputs and stores them in the PCM waveform memory 7. it can. 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 in the waveform information processing apparatus 1
The contents of the waveform memory 7 can be input to the electronic musical instrument 12 via the interface 11, and the PCM waveform memory 1
Can be set to 9.

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 the arithmetic processing executed by the waveform information processing apparatus 1, respectively.
The processing in the NU7 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 shown on the screen and its contents are input to the PCM waveform memory 7. In the figure, the characters WAVE GEN indicating the wave generator are displayed.

The MENU 2 is a mode for performing graphic processing of waveforms and the like, and in the figure, characters indicating the graphic are 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,
It is displayed as D.

The MENU 4 is a mode for saving the waveform information from the PCM waveform memory 7 to the disk 8 in reverse.
It is displayed as AVE.

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 WAVE IN
Is displayed.

The MENU 6 is a mode for outputting waveform information from the PCM waveform memory 7 of the waveform information processing apparatus 1 to the PCM waveform memory 19 of the electronic musical instrument 12.
It is displayed as OUT.

The MENU 7 is a parameter edit (PARAMETER) for inputting various parameters by numerical values.
EDIT) mode, which is displayed as PRA ED.

Then, by moving the manipulator 6-1 of the digitizer 6, the mouse display unit MOUSE is moved to each M.
By going to the display positions of ENU1 to 7 and turning on the switch 6-2 at that position, that mode is selected and the screen of the display device 10 is changed.

The MAP shown in FIG. 2 is a memory map display showing the state of use of the memory. There are 31 MAPs, which indicate stored pages of the PCM waveform memory 7 as described later.
It is now blanking. Each waveform can be saved with a name, and the name is displayed in the NAME column. Although FIG. 1 shows the initial state and blanking, a maximum of eight can be displayed. 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, when the mouse display MOUSE is moved to the LOAD position of the menu 3 and the switch 6-2 is turned on on the screen in the initial state, the display screen shown in FIG. 3 is obtained.

That is, 10 kinds of waveforms are recorded on the disk 8 now. In other words, what is displayed as DISK in the drawing is the name of the waveform and its page number. For example, the name of the first waveform is "SIN WAVE".
Which uses a storage capacity of two pages.

In FIG. 3, SUBFUNC1 indicates a sub-function for designating the display of the waveform name in the file on the disk 8, and FILE is displayed on the screen. SUBFUNC2 indicates a sub-function for changing the display screen to the next page and is displayed as NEXTP. In addition, SUBFUNC3 indicates a sub-function for making the previous page on the contrary, and is displayed as BEFORP. Further, SUBFUNC4 is a subfunction used when canceling a predetermined transfer, and is displayed as ABORT. SU
BFUNC5 is a sub-function that actually performs transfer, and is indicated as START. Also SUB
FUNC6 is a sub-function that returns to the initial screen and is displayed as RETURN.

By the way, the screen shown in FIG. 3 is moved from the disk 8 to the PC by moving the mouse display MOUSE.
This shows that two types of waveform information have already been transferred to the M waveform memory 7. That is, in the waveform name display field NAME, "SINWAVE" and "SIN312" are displayed, and since each waveform has a capacity of 2 pages and 7 pages, a total of 9 MAP display bodies are colored. There is. Now, two of these MAP displays are SINWA
It has the same color as the VE font, and seven are SIN31.
It has the same color as the font of the 2 font.

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

Accordingly, in the state of the screen in FIG. 3, "SINWAVE" and "S" are stored in the PCM waveform memory 7.
Information of 9 pages in total of two waveforms “IN312” is 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-
Operate 2 to display the waveform graphically.

FIG. 4 shows a display state in the graphic mode. This screen will be described first. The screen in this graphic mode is roughly divided into a main graphic area (shown as MAIN GRA in the figure) and a sub graphic area (shown as SUB GRA in the figure).
And divided into other areas.

This sub-graphic area SUB GR
A (that is, the first display means) displays a whole of the designated waveform, and 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 is displayed. The data of only the specific address is transferred and sent to the display register 9 for display. That is, the sub-graphic area SUBGRA compresses the actual waveform information, that is, extracts and displays the waveform sample points while skipping every predetermined interval.

Then, the sub graphic area SU
Page guide enclosed in a square in B GRA (P in the figure)
It is shown as GUIDE. ) Indicates a range (page) to be enlarged and displayed in the main graphic area MAIN GRA (that is, the second display means).

The size of the page guide PGUIDE is determined by a magnification display area (shown as MAG in the figure), and the magnification of the X axis is designated by X.
mag, which specifies the Y-axis magnification, when Ymag is respectively "X1" and "X1", the waveform information for one page of the PCM waveform memory 7 is directly stored in the main graphic area MAIN GRA. Therefore, the waveform information displayed in the main graphic area MAIN GRA increases as the magnification increases. 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", the X-axis will be described. When "X1", all sample points are read and displayed, and when "X2", sample point 2 is displayed. One display point (that is, one skip) for each item, one display point (four skips) for four sample points when "X4", and one sample point for eight sample points when "X8". It becomes a display point (that is, 7 skips).

The same applies to the Y axis. When the magnification of the X axis is fixed and the magnification of the Y axis is increased, the peak value is further compressed. Therefore, even though 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 is high.

The area designated by the page guide PGUIDE changes according to the selection of the magnification. Also, there is "ALL" in the magnification display area MAG, but this is the sub graphic area SUB.
The GRA display is simply enlarged to display all parts in the main graphic area MAIN GRA.

Therefore, in accordance with the selection of the magnification, the CPU 2
Reads the data of the page of the PCM waveform memory 7, stores it in the data area of the main graphic area and the sub graphic area of the working memory 3, and then transfers it to the digital display register 9 for display on the display device 10.

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

That is, the main graphic area MA
IN GRA is 26.5 msec as shown in FIG.
To +38.6 msec from +2048 to-
Although it is displayed at the level of 2048, the intersection of this cross cursor CAR is at the level of 32.56 msec, 1152.
It is indicated by E. This cursor value display field CA
The value of R VALUE 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 displays the contents of the above area of the working memory 3 in response to the movement of the mouse display MOUSE. Will be changed.

In this graphic mode, in addition to the above-described sub-function SUBFUNC6, a sub-function for editing waveform information (SUBFUNC7 indicated as WAVE ED in the figure)
And a sub-function to edit the parameters (SUBFUNC shown as PAR ED in the figure)
8) The details of each will be described later.

FIG. 5 shows a series of processes executed by the CPU 2 when the graphic mode is set.
First, in step S1, the mouse display MOUSE is shown at a specified position on the screen in the display device 10 by a signal input from the digitizer 6.

In step S2, the mouse display object MOUSE is displayed in the main graphic area MAIN.
It is determined whether or not the cursor is within the GRA. If the determination is YES, the process proceeds to step S3, where the above-described cross cursor C
While displaying the AR, data indicating the intersection is calculated and displayed in the cursor value display field CAR VALUE.

Then, the process proceeds to step S4. Also, if NO is determined in step S2, this step S
Go to 4.

Step S4 is a normal routine,
The details are shown in FIG. That is, in step N1 of this normal routine, the mouse display unit MOUS
E is displayed on the screen of the display device 10.

Then, the process proceeds to step N2, where it is determined whether or not the switch 6-2 provided on the operation device 6-1 of the digitizer 6 is turned on. If no operation is performed, the process proceeds to step S5 shown in FIG. move on.

If the switch 6-2 of the operation element 6-1 is turned on, the process proceeds to step N3 following step N2, and it is determined at which position the mouse display body MOUSE is located.

When it is detected that the mouse display MOUSE is in the magnification display area MAG, the process proceeds to step N.
4, the CPU 2 performs the processing for changing the magnification. 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. If the mouse display MOUSE is in the waveform name display field NAME in step N3, the process proceeds to step N5 following step N3 to read the newly designated waveform information from the PCM waveform memory 7. To run. Then continue with Step N
In step 6, since the whole waveform image must be displayed again, the CPU 2 causes the sub graphic area SUB G
Change the RA display. Further, in step N3,
Mouse display MOUSE is sub graphic area SU
When it is detected that it is in B GRA, the process proceeds to step N7, and the position of the page guide PGUIDE is set to the mouse display body M.
Move to the position of OUSE, and after that, the waveform information of the page specified by the page guide PGUIDE is displayed on the PC.
It is read from the M waveform memory 7 and stored in a predetermined area in the working memory 3.

If the mouse display MOUSE is located at a position other than the above in step N3, the operation proceeds to step N8 as a non-operation. Further, after the processing of steps N4, N6 and N7 described above is completed, the process proceeds to step N8.

In step N8, the waveform data which has been rewritten in the working memory 3 to change the display of the main graphic area MAIN GRA is transferred to the display register 9 and displayed on the display device 10.

After the completion of the processing of step N8,
The process proceeds to step S5 of the flow shown in FIG. In step S5, the mouse display MOUSE is at a position for displaying the subfunctions SUBFUNC6 to SUBFUNC8, and the switch 6 of the operator 6-1 of the digitizer 6 is present.
Judge whether -2 is turned on.

If no operation is performed, the process returns to step S1 as a non-operation. Also SUBF
If it is detected that the switch 6-2 has been operated at the position of UNC7, the process proceeds to step S6, where the wave edit process is executed, and then the process returns to step S1. Also SU
If it is detected that the switch 6-2 is turned on at the position of BFUNC8, the process proceeds to step S7, and then returns to step S1. 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, a screen in wave editing will be described with reference to FIG. When the operator 6-1 of the digitizer 6 is moved, the cross cursor CAR moves in the main graphic area MAIN GRA as described above. Then, the switch 6-2 provided on the operator 6-1
When 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 when turned on and off next is input as the amplitude value.

When the operator 6-1 is moved on the tablet while the switch 6-2 is kept on, a new amplitude value is continuously input 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. The display magnification is "X1"
If not, the rough data is stored in the PCM waveform memory 7, so interpolation is performed. That is, linear interpolation is performed from the values of the two points that are input, and when the magnification of the X axis is “X2”, one point is at the middle, when “X4” is three, three points at the middle and “X8” At that time, the amplitude values at seven points are calculated in the middle and used as waveform information.

Further, at the time of this wave editing, a new subfunction SUBFUNC other than the above is added.
9 and 10 are displayed. This subfunction SUB
FUNC9 is the main graphic area MAIN G
The content displayed in the sub graphic area SUB GRA is rewritten by designating after editing the content of the RA. In addition, subfunction SU
When BFUNC10 is designated, the graphic mode as shown in FIG. 4 is restored.

FIG. 8 shows a processing flow of such a wave editing, and jumps from step S6 in FIG.

Then, in step W1, the mouse display MO
The position of USE is determined by the signal from the digitizer 6,
Display it on the screen and proceed to the next step W2. That is, step W2 is the normal routine shown in FIG. 6, and after the series of processes described above, the process proceeds to step W3. That is, when it is determined to be off in step N2 of FIG. 6 and after the processing of step N8 is completed, step W
Jump back to 3.

At step W3, the mouse display unit MOUS is displayed.
It is determined whether or not E is in the main graphic area MAIN GRA. If NO, the process proceeds to step W4. If the sub-function SUBFUNC9 is designated, the process proceeds to step W5, where the sub-graphic area SUB is set.
The GRA is caused to display the waveform information stored in the PCM waveform memory 7.

Subfunction other than that, that is, SUB
When FUNC6 to 8 and SUBFUNC10 are specified,
The process jumps to step S1 shown in FIG. 5 to execute each process. When the mouse display MOUSE is located at a position other than the sub-function, the operation is not performed and the process returns to step W1.

Then, if a determination of YES is made in step W3, the process moves to the next step W6. Step W6
Then, the cross cursor CAR is displayed in the main graphic area MAIN GRA, and the position information of the intersection of the cross cursor CAR is displayed in the cursor value display field CAR VALUE.

Then, in the next Step W7, the operator 6
It is judged whether the switch 6-2 of -1 has been turned on. If it is not turned on, the process returns to step W1 again. If NO is determined in step W7, the process proceeds to the next step W8, the mouse display MOUSE is displayed again, and the process proceeds to the next step W9, in which the switch 6-2 of the operator 6-1 is continuously turned on. If it is detected that it is in the OFF state, the process proceeds to step W10 to determine the position of the mouse display unit MOUSE, and
The CPU 2 reads the value of the X axis at that time and fixes the display of the X axis of the cross cursor CAR. Then, in step W11, it is determined whether or not the switch 6-2 of the operator 6-1 has been turned on.

If the ON operation is not performed again, the flow returns to step W10 to determine and display the position of the mouse display MOUSE in accordance with the operation of the operation element 6-1. At this time, the Y-axis of the cross cursor CAR moves, but the X-axis remains fixed as described above.

If it is detected in step W11 that the switch 6-2 has been turned on, the flow advances to step W12 to read the value of the Y-axis of the cursor and to store the data in the CP.
U2 stores 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.

If it is determined in step W9 that the mouse is on, the process proceeds to step W13, where the mouse display M
After determining the OUSE display position, the process proceeds to step W14 to detect whether the switch 6-2 is in the ON state, and if it is in the ON state, the process proceeds to step W15 to store the X and Y axis values designated by the mouse display unit MOUSE. Then, it is displayed on the screen as a new waveform sample point.

Then, the process proceeds to step W13. In this way, step W1 is performed until the switch 6-2 is turned off.
Repeat steps 3 to W15 to continuously change the waveform shape on the main graphic area MAIN GRA. When it is detected in step W14 that the switch 6-2 has been turned off, step W16 is performed next.
Proceed to. After step W12, step W1
Go to 6.

In step W16, the crest value obtained by the above-described processing is interpolated according to the display magnification as described above and transferred to the PCM waveform memory 7 for storage.

When the processing in step W16 is completed, the flow returns to step W1, and the same processing is performed thereafter to edit the waveform.

Next, the operation at the time of parameter editing in step S7 shown in FIG. 5 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 subfunction SUBFUN
The parameters indicated by C11 to C14 can be input while moving the mouse display MOUSE on the main graphic area MAIN GRA.

First, these SUBFUNC 11 to 14
GEN ST means a general start, and designates from which point of the waveform stored in the PCM waveform memory 7 the reading is started when the musical tone is actually generated. GEN ED
Means the general end, and on the contrary, it specifies at which point the reading is finished. In addition, REP START indicating a repeat start and REP ED indicating a repeat end indicate a start address and an end address for repeatedly reading a specific section for generating a continuous sound.

At the time of this parameter editing,
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 MOUSE is moved to the main graphic area MAI.
When the switch 6-2 is moved to N GRA and then the switch 6-2 is operated at an appropriate point, a cursor indicating the position is displayed.

That is, the above subfunction SUBFU
For NC11, a long GST line enters the screen, and for subfunction SUBFUNC12, a long GED line enters, and the subfunction S
For the UBFUNC13, a short RST line is displayed on the screen, and for the subfunction SUBFUNC14, a short RED line is displayed on the screen. The distinguishability can be improved by making the colors of the lines GST and GED different from the colors of the lines RST and RED.

These displays are also made in the sub-graphic area SUB GRA, and a horizontally long rectangular mark REP is displayed at the repeated portion.

While watching the waveform displayed on the display device 10 in this manner, sound generation starts, ends or repeat starts,
Since the end position can be specified, for example, the point where the waveform level is zero, that is, the point that intersects with the X axis, that is, the zero-cross point is set to the specified position as described above, so that noise such as click sound is reliably prevented. You can do it.

FIG. 10 shows a processing flow of the CPU 2 at the time of this parameter editing, and step S of FIG.
7 are details.

First, at step P1, the normal routine shown in FIG. 6 is executed, and then the process jumps back to step P2. Then, in this step P2, the subfunctions SUBFUNC6 to 8 and 10 described above are used.
It is detected whether 14 is designated. If nothing is operated, the process returns to step P1. If the subfunctions SUBFUNC11 to 14 are specified, step P
Proceed to 3 and other subfunctions SUBFU
If NC is designated, the flow returns to the graphic mode flow shown in FIG.

Then, in step P3, the position of the mouse display is first determined and displayed according to the position of the operator 6-1 of the digitizer 6. In the next step P4, it is judged whether or not the mouse display unit MOUSE is in the main graphic area MAIN GRA, and if there is, the process proceeds to step P5 to generate the cross cursor CAR and to display the cursor value display field CAR VA.
Cause the LUE to display its position. If step P4
If NO is determined in step S1, the process returns to step P1.

Then, following step P5, the CPU 2
Executes step P6, and switches 6 of the operator 6-1.
Judge whether or not -2 was turned on. If there is no operation, the process returns to step P1, but if the on operation is performed, the process proceeds to step P7 and the mouse display unit MOUSE
The position specified by, that is, the position of the intersection of the cross cursor CAR is stored, and the address specified by any of general start, end, repeat start, and end is set, and the main graphic area MAIN is set.
The GRA and the sub graphic area SUB GRA are caused to perform corresponding displays. Then, after step P7, step P1 is executed, and similarly, 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. VOL in the figure
UME is a volume display unit, and by moving the mouse display body, the display body of the volume knob moves and the level changes greatly. There are up / down switch displays UPSW and DOWNSW, and mouse display M
Bring OUSE to that position, and operate it 6-1.
By turning the switch 6-2 on and off, the value of the parameter changes little by little in the up or down direction.

TOTALPARA is a parameter display field for displaying the overall parameters of the musical tone.
VEPAR is a parameter display field related to the waveform information of a musical sound, and after specifying which parameter of these display fields to set with the mouse display MOUSE,
Move the mouse display unit MOUSE to the position of the volume display unit VOLUME or the up / down switch display units UPSW and DOWNSW described above, and move the operator 6-1.
And turning on the switch 6-2, the value of the parameter can be input digitally.

That is, the display of each parameter, for example, "MAS
Next to "TER TUNE", the value "56" of the parameter will be displayed. In this way, the level of each parameter can be input only by operating the operator 6-1.

Although the load mode (MENU3), graphic mode (MENU2) and parameter edit (MENU7) processes have been described in detail above, the CPU 2 also performs predetermined processes in other modes according to the control information stored in the control ROM 4. Execute, but omit the details.

Although the embodiment of the present invention has been described in detail, according to the embodiment, the main graphic area MAIN GRA and the sub graphic area SUB G are provided.
Since the enlarged view of the main part of the waveform and the whole view are shown separately for RA, it is possible to easily grasp and correct the waveform and set the parameters. Further, a cursor value display field C for displaying the level and time of the position designated at the intersection of the cross cursor CAR
Since the AR VALUE is provided, the peak value and the time of the input parameter can be instantaneously understood.

The main graphic area MAIN
Since the GRA display magnification can be changed in various ways, it is very effective for waveform recognition, correction, parameter display, zero-cross point detection, and the like.

The main graphic area MAIN
If the waveform is corrected by increasing the magnification of the GRA display, the CPU 2 automatically interpolates the waveform and generates appropriate waveform data. Waveform information can be input.

In the above embodiment, the general start, end, repeat start,
Since each position of the end is displayed, erroneous input of each parameter can be prevented, and the position of each parameter can be understood visually.

In addition, parameter edit (MENU
In the case of 7), since the volume display section VOLUME and the up / down switch display body UP / DOWNSW are displayed, there is no input error when inputting each parameter,
Moreover, digital input is possible without operating the numeric keypad, which is convenient.

In the above embodiment, one screen has 2 screens.
Although two display areas, that is, a main graphic area and a sub-graphic area, are provided for display, they may be displayed as separate display panels.

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

[0097]

As described above, according to the present invention,
When specifying the waveform, the waveform name and waveform capacity are
The waveforms that you want to display are displayed on the screen in the same form.
Of the waveform can be easily viewed and the waveform is displayed on the screen.
Waveform value of the first waveform read from the storage means
The second waveform compressed by thinning out the
It is displayed on the rear and displayed in the first display area.
The third waveform, which is an enlargement of a portion of the second waveform shown, is the screen
Since it is displayed in the second display area above, it has a large capacity.
Even for waveforms, the entire waveform and its details can be displayed simultaneously.
It

[Brief description of drawings]

FIG. 1 is a circuit configuration diagram of an embodiment.

FIG. 2 is a diagram showing an initial display state of a display device.

FIG. 3 is a diagram showing a display state of a display device in a load mode.

FIG. 4 is a diagram showing a display state of a display device in a graphic mode.

FIG. 5 is a flowchart showing a process in a graphic mode.

FIG. 6 is a flowchart of a normal routine.

FIG. 7 is a diagram showing a display state of the display device during wave editing.

FIG. 8 is a flowchart showing a process at the time of wave editing.

FIG. 9 is a diagram showing a display state of the display device at the time of parameter editing.

FIG. 10 is a flowchart showing a process at the time of parameter editing.

FIG. 11 is a diagram showing a display state of the display device in a parameter edit mode.

[Explanation of symbols]

 Reference Signs List 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

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-58-34199 (JP, A) Keyboard magazine August 1983 issue P. 124-125 Keyboard magazine September 1983 issue P. 156-157 Computer Music Jo urnal Volume 7, Number 2 Summer1983P. 70-74

Claims (1)

(57) [Claims] 1. A waveform name and a waveform capacity are stored according to an identification code of each waveform stored in a storage unit that stores the waveform.
The first display processing for displaying the same form on the screen and the waveform name designated by the designating means for designating the waveform name
A read process for reading the first waveform from the storage means in accordance with the corresponding identification code and a waveform value of the first waveform read by the read process are displayed.
The second waveform that has been thinned and compressed is displayed in the first display area on the screen, while the third waveform that is a partial enlargement of the second waveform displayed in the first display area is displayed . And a second display process for displaying the second display area on the screen.