JP2530853Y2 - Envelope waveform display device - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] The invention relates to an envelope waveform display device used for an electronic musical instrument.

[Prior art and its problems] Some conventional electronic musical instruments have an envelope waveform display device for displaying an envelope waveform of a musical tone to be created. Then, the envelope waveform display device displays a continuous envelope waveform of multiple steps, and edits the data for determining the waveform, such as the reaching level data of the amplitude level and the data indicating the slope, for the envelope of some steps. Although the correction may be made depending on the operation, there is a problem that it is not possible to distinguish and display which step is being corrected in the entire envelope waveform, or to display the slope of the waveform at the corrected step in an analog manner.

[Purpose of the Invention] Accordingly, the present invention has been made in view of such circumstances, and while displaying which step is being corrected in the entire envelope waveform, the slope of the waveform at that step is analogized. It is an object of the present invention to provide an envelope waveform display device capable of displaying the information in an envelope.

[Summary of the Invention] The invention is based on reading out envelope data for each step from storage means for storing envelope data representing a level and a rate for each step forming an envelope waveform, displaying the envelope waveform, and performing a waveform correction operation. When the envelope data of the step specified according to this waveform correction operation is corrected, the envelope waveform is displayed according to the value of the corrected envelope data. While updating, the width of the cursor display is variably controlled.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the configuration of an electronic circuit. Reference numeral 11 denotes a microprocessor for controlling the operation of other circuits. The microprocessor 11 stores, via an address bus AB and a data bus DB, control programs for various operations.
M12, RAM 13 for storing amplitude level arrival level data of each of the envelope waveforms of a plurality of steps and data indicating the inclination, a key input unit 14 having keys for correcting data, etc., and a display comprising a liquid crystal display element It is connected to each of the liquid crystal drive circuits 15 for controlling and driving the unit 16.

The display section 16 is composed of a liquid crystal display element as described above. As shown in FIG. 2, the waveform display section 16a for displaying an envelope waveform of a plurality of steps,
6a, a cursor display section 16b for displaying a cursor C for indicating a specific step position of the envelope waveform displayed on the waveform display section 16a, and a data display for displaying reached level data of the amplitude level or data indicating the slope. It consists of a part 16c. Here, as described above, as the data defining the envelope waveform, the absolute value “RATE” of the data indicating the slope and the reaching level data “LEVEL” of the amplitude level are set. When displayed on the data display section 16c, a numerical value n indicating whether the waveform is the envelope waveform of the n-th step is added thereto, and "RATEn =", "L"
It should be displayed in a format such as EVELn = ”. For example, as shown in FIG. 2, when the value of the data indicating the slope of the envelope waveform in the first step is "50", the data is displayed on the data display section 16c as "RATE1 = 50". .

The key input unit 14 is provided on the operation unit of the electronic musical instrument provided with the envelope waveform display device, together with the display unit 16 as shown in FIG. 3, and has a cursor (CURSOR) as shown in FIG. ) Key 14a and a data (DATA) key 14b. Both the cursor key 14a and the data key 14b have "+" and "-" keys. "+" Of the cursor key 14a
By operating the key, the display on the data display section 16c is changed from “RATE1” → “LEVEL1” → “RATE2” → “LEVEL2” →
The display changes in the order of “RATE3” → “LEVEL3” → “RATE4” →..., And the cursor C is displayed at the corresponding step position of the envelope waveform on the cursor display section 16b. When the "-" key of the cursor key 14a is operated, the cursor display section 16 is moved in the opposite direction to the "+" key operation.
b, the contents of the data display section 16c change.

The data key 14b displays desired data using the "+" key or the "-" key of the cursor key 14a.
This is operated after being displayed in c. The data numerical value increases by operating the "+" key, and decreases by operating the "-" key.

 Next, the operation of the above embodiment will be described.

FIG. 4 shows the contents of the processing. In the operation place, the initial setting of the entire system is first performed as shown in step S01, and then the process proceeds to step S02 to initialize the screen of the display unit 16 and store it in the RAM 13. Based on the data, the envelope waveform is displayed on the waveform display section 16a, for example, as shown in FIG. 5 (A). At this time, data indicating the slope of the envelope waveform of the first step is displayed on the data display section 16c as "RATE1 = 33", and the range of the first step is displayed on the cursor display section 16b correspondingly. The cursor C is displayed at the indicated position.

Then, in step S03, the cursor key 14a
In S04, it is determined whether or not the operation input of the data key 14b has been performed. The processes in steps S03 and S04 are repeatedly executed until the operation is performed, and the operation input is waited.

Here, when the "+" key of the cursor key 14a is operated, this is determined in step S03, and the process proceeds to step S05. In step S05, the cursor C is moved and other cursor processing is performed in accordance with the number of operations of the "+" key or the "-" key of the cursor keys 14a. In this case, as shown in FIG. 5B, in response to the operation of the "+" key, the display "RATE1 = 33" of the data display section 16c is read from the RAM 13 and the amplitude level of the envelope waveform of the first step is read out. Is switched to “LEVEL1 = 33” indicating the reaching level data of “1”. To change the data in the data display section 16c, select “RATE” → “LEV
EL ”and both are the data of the first step, so the display position of the cursor C on the cursor display section 16b does not change. From the state shown in FIG.
When the "-" key of 14a is operated once, the state returns to the state of FIG. 5A again. After the processing in step S05, the process returns to the processing in steps S04 and S03 again, and waits for an operation input of the cursor key 14a or the data key 14b.

The cursor key 14a is further changed from the state shown in FIG.
When the "+" key is operated, the display "LEVEL1 = 33" of the data display section 16c is read from the RAM 13 by the cursor processing in step SS05, as shown in FIG.
The data is switched to data "RATE2 = 15" indicating the absolute value of the slope of the envelope waveform of the step. The change of data in the data display section 16c is a change from "LEVEL" to "RATE", and since the data of the first step is changed to the data of the second step, the display position of the cursor C on the cursor display section 16b is also changed. Moves from the envelope waveform of the first step to the envelope waveform of the second step.

When the "-" key of the cursor key 14a is operated from the state shown in Fig. 5 (C), the state returns to the state shown in Fig. 5 (B) or Fig. 5 (A) according to the number of times of operation.

Thereafter, when the "+" key of the cursor key 14a is operated a plurality of times in the same manner as described above, the data display section 16c
Is rewritten, and each time the step of the envelope waveform indicated by the data changes, the cursor display section 16
The position of the cursor C of b also moves. Then, as shown in FIG. 5D, the cursor C of the cursor display section 16b is moved to the final step of the envelope waveform of a plurality of steps in which the cursor C is displayed, here the sixth step position, and is displayed on the data display section 16c. When "0" is displayed as the reaching level data of the amplitude level of the envelope waveform in the sixth step, the subsequent operation of the "+" key of the cursor key 14a becomes invalid.

Further, when the data key 14b of the key input unit 14 is operated, this is determined in step S04, and
Go to 06. In step S06, the content of the data displayed on the data display section 16c is rewritten according to the operation content of the data key 14b. Now, as shown in FIG. 6A, the cursor C of the cursor display section 16b is displayed at the display state, that is, at the position corresponding to the first step of the envelope waveform of a plurality of steps, and "RATE1 = 66 "
When the "-" key of the data key 14b is continuously operated in a state where is displayed, and the content is rewritten to "33", the content of the display unit 16 is accordingly changed as shown in FIG. 6 (B). The slope of the first step portion of the envelope waveform displayed on the waveform display section 16a becomes gentle. At the same time, in a subsequent step S07, display processing of the cursor displayed on the cursor display section 16b is performed, and the display in the width direction is changed so as to correspond to the envelope waveform range of the first step. After the process in step S07, the process returns to step S03.

When the "+" key of the data key 14b is operated by the number of times the "-" key is operated from the state shown in FIG. 6 (B), the state returns to the state shown in FIG. 6 (A).

From the display state shown in FIG. 6B, the "-" key of the data key 14b is further operated continuously, and step S06 is performed.
When the content of "RATE1" is rewritten to "16" as the data processing, the first of the envelope waveforms displayed on the waveform display section 16a of the display section 16 in response to the rewriting is shown in FIG. The inclination of the step portion becomes more gentle. At the same time, in a subsequent step S07, display processing of the cursor displayed on the cursor display section 16b is performed, and the display in the width direction is changed so as to correspond to the envelope waveform range of the first step.

When the "+" key of the data key 14b is operated by the number of times the "-" key is operated from the state shown in FIG. 6 (C), the state shown in FIG. 6 (B) or FIG. 6 (A) is obtained. Return.

By the way, when the data indicating the slope of the envelope waveform is updated and set by the "+" key of the data key 14b and is set to a very high value, as shown in FIG. The width of C becomes very narrow.

In the above embodiment, an example is shown in which the cursor C having a width corresponding to the lower position is displayed according to the step of the displayed envelope waveform. However, the present invention is not limited to this. The envelope waveform itself may be displayed in an inverted or blinking manner, and various other display methods are conceivable.

[Effects of the Invention] As described in detail above, according to the present invention, envelope data for each step is read from storage means for storing envelope data representing the level and rate for each step forming the envelope waveform, and the envelope waveform is read. Is displayed, and the range of the step specified according to the waveform correction operation is cursor-displayed. If the envelope data of the step specified according to the waveform correction operation is corrected, the corrected envelope data is displayed. While the display of the envelope waveform is updated according to the value of, the width of the cursor display is variably controlled, so that while distinguishing and displaying which step in the entire envelope waveform is being modified, the slope of the waveform at that step is analogized. Can be displayed.

[Brief description of the drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a block diagram showing a circuit configuration, FIG. 2 is a diagram showing a configuration of a display unit in FIG. 1, and FIG. FIG. 4 is a diagram showing a configuration of a key input unit, FIG. 4 is a flowchart showing processing contents of an operation,
FIG. 5 is a diagram showing a change in a display state corresponding to a cursor key operation, and FIGS. 6 and 7 are diagrams showing a change in a display state corresponding to a data key operation. 11 ... Microprocessor, 12 ... ROM, 13 ... RAM, 14
…… Key input section, 14a …… Cursor key, 14b …… Data key, 15 …… LCD drive circuit, 16 …… Display section, 16a …… Waveform display section, 16b …… Cursor display section, 16c …… Data display Section, AB: address bus, DB: data bus, C: cursor.

Claims (1)

(57) [Scope of request for utility model registration] 1. A storage means for storing envelope data representing a level and a rate for each step forming an envelope waveform, and displaying an envelope waveform in accordance with the envelope data for each step read from the storage means, and correcting the waveform. Display means for displaying a range of steps designated in accordance with the operation with a cursor, and when the envelope data of the step designated in accordance with the waveform correction operation is corrected, the envelope waveform is adjusted in accordance with the value of the corrected envelope data. And display control means for variably controlling the width of the cursor display while updating the display of the envelope waveform display.