JP3144062B2 - Electronic musical instrument parameter display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parameter display device for an electronic musical instrument, and more particularly to a parameter display device for an electronic musical instrument for determining whether a parameter has been corrected.

[0002]

2. Description of the Related Art As is well known, there is known an electronic musical instrument that generates a tone signal based on a plurality of pieces of parameter information and generates a sound based on the tone signal. The parameter information includes, for example, the pitch, volume, keyboard scaling characteristics, and envelope waveform of a musical tone, and these information are defined by one or a plurality of parameter elements. By setting these parameter information according to the player's preference, various musical tones can be obtained. And the electronic musical instrument is provided with a panel switch for individually setting a plurality of parameter information,
The set parameter information is temporarily stored in a storage device and then transferred to a tone generator circuit, and used as parameter information for defining a tone signal.

By the way, in actual performance, there are many cases where it is desired to modify stored parameter information to perform a performance. Therefore, a conventional electronic musical instrument is provided with a so-called compare function in which the tone before correction and the tone after correction can be alternately compared when the parameter information is corrected. In this case, the parameter in the parameter information is provided. The value of the element is displayed in a different display form from the modified parameter element and the unmodified parameter element.

[0004]

However, as the number of parameter elements increases, the amount of information to be displayed increases accordingly. Therefore, in a display device in which the display range (or definition) is limited, all of the parameter The value of the element cannot be displayed.
It has been difficult to intuitively determine how many parameter elements have been corrected. The present invention has been made in view of the above-described problem, and has as its object to determine at a glance whether a parameter for forming a musical tone has been corrected from a predetermined state without requiring a wide display range. It is an object of the present invention to provide a parameter display device of an electronic musical instrument that can perform the above.

[0005]

According to the present invention, there is provided a display apparatus for an electronic musical instrument for displaying a plurality of parameters for forming a musical tone, the apparatus corresponding to each of the parameters. Storage means for storing data values, correction means for individually correcting data values stored in the storage means, and whether or not the data values stored in the storage means have been corrected by the correction means Detecting means for detecting each parameter, and a display pixel corresponding to the parameter, each of the display pixels corresponding to the parameter, inversion or non-inversion according to the detection result of the parameter by the detection means Display means for performing alternative display.

[0006]

According to the above arrangement, the display means performs display in which the display pixel corresponding to the corrected parameter and the display pixel corresponding to the uncorrected parameter are mutually inverted and non-inverted. As the number of modified parameters increases, the overall display changes and the number of modified parameters can be visually determined. Here, the display pixel corresponding to one parameter can be set to the minimum display unit (dot) of the display means, so that the display area required in the display means can be minimized. further,
By determining the correspondence between dots and parameters in advance, it is possible to determine which parameter has been modified.

[0007]

【Example】

A: Configuration of Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an electrical configuration of the electronic musical instrument. In this figure, reference numeral 1 denotes a keyboard composed of a plurality of keys, and the key press / release state of each key is detected by a key press detection circuit 2, and the detection signal is sent to a CPU 3 (central processing unit) via a bus. ). Reference numeral 4 denotes a panel switch composed of various editing switches and the like. The on / off state of each switch is detected by the switch detection circuit 5, and the detection signal is supplied to the CPU 3.

Reference numeral 6 denotes operators (oscillators) OP _{1 to} OP ₆
(Not shown), and a tone generator circuit that synthesizes tone signals from these operators to generate one tone color signal. Each operator digitizes and generates a tone signal based on the parameter elements. Here, FIG. 9 shows parameter elements for one operator. As shown in this figure, 20 types of parameter elements are set for one operator, and these parameter elements are abbreviated. Each operator OP ₁
Do not belong to ~OP _6, the common parameter elements (not shown) is 20 type setting. That is, in order to generate one tone, the total number of parameter elements supplied to the tone generator 6 is 20 (type) × 6 (number of OPs) +20 (common).
It is 140 of. Here, one tone color 140 is defined.
One kind of parameter element is set. Since the meaning of each parameter element is not directly related to the present invention, the description will be omitted except for an envelope waveform described later.

Returning to FIG. 1, the tone color signal generated by the tone generator 6 is converted into an analog signal by a D / A converter 7 and then sounded via a sound system 8 including an amplifier and a speaker. Is done. 9 is ROM
(Read only memory), which stores control programs used in the CPU 3, programs for controlling display, parameter elements for each tone color, and the like.

[0010] 10 is a RAM (Random Access Memory) having a register storage unit 10 ₂ for storing the parameter storage unit 10 ₁ and the various registers for storing the aforementioned parameter elements. Parameter storage unit 1 of them
0 to _1, tone color number for each tone color TN (TN = 1, 2, 3,
,..., N), a set of parameter elements can be stored.
The value (information) and the edit flag are stored in correspondence with 0 types of parameter elements. Here, the edit flag the value of the parameter element, before reaching the present time from the time stored in the parameter storage unit 10 _1, which indicates whether it is changed, the value is, for example, change It becomes "1" when it has been changed, and "0" when it has not been changed. By specifying the tone number TN by operating the panel switch 4, each set of these parameter elements is read out from the ROM 9 and supplied to the tone generator circuit 6 while a set of parameter elements corresponding to the tone number TN is read out. It is stored in the corresponding region of the parameter storage unit 10 ₁ of the RAM 10. Thus, a desired tone can be selected from a plurality of tone colors.

A display unit 11 has a display screen G and performs various displays under the control of the CPU 3. Here, the configuration of the display screen G will be described with reference to FIG. In this figure, 21 is a message display area for displaying various messages such as an operation mode, 22 is a data display area for displaying abbreviated notation of parameter elements and their values,
Reference numeral 23 denotes a waveform shape display area for displaying a waveform or the like defined by the parameter element. 24 is horizontal 10
This is a status display area composed of a dot matrix of 14 dots × vertical 14 dots.

The status display area 24 will be described with reference to FIG. The status display area 24 is 5 dots wide x
Areas E _{1 to} E ₆ of 4 dots vertically and an area E ₇ of 10 dots horizontally × 2 dots vertically are roughly classified. Each of the areas E _{1 to} E ₆ corresponds to each of the operators OP _{1 to} OP ₆ , and each dot of each of the areas E _{1 to} E ₆ is
It corresponds to each of the parameter elements of the operator. For example, each dot area E _1, as shown in this figure, (in the figure abbreviated notation) parameter elements of the operator OP ₁ corresponds to, is the same in other areas E ₂ to E _6. Furthermore, each dot of the area E ₇ corresponds to the common parameter element. That is, each dot of 10 horizontal dots × 14 vertical dots in the state display area 24 corresponds to each of a set (140 types) of parameter elements supplied to the tone generator circuit 6. The display of each dot is
When the value of the edit flag (see FIG. 1) of the corresponding parameter element is “0”, the color becomes “white”, and when the value is “1”, the color becomes “black”.

B: Operation of Embodiment Next, the operation of this embodiment will be described. First, when the power is turned on to the electronic musical instrument, the CPU 3
Initialization processing such as clearing various registers in 0 and writing initial setting values to various variables of peripheral circuits is performed. After this initialization process, the value for each parameter elements in response to the operation of the panel switch 4 are stored read and the parameter storage unit 10 ₁ from ROM 9. At this time, when the panel switch 4 is not operated, the ROM
Default tone color number from 9 (e.g., TN = 1) 1 set of parameter element corresponding to is read out and stored in the parameter storage unit 10 _1. In this state, since the values of the respective parameter elements have not been changed since they were stored, the values of all the edit flags are “0”.

After this processing, the apparatus is in a state of waiting for an instruction from the panel switch 4. Next, a case will be described in which a transition is made from the state of waiting for the instruction to the “edit mode” in which parameters are corrected. First, when the operator operates the panel switch 4 to shift to the “edit mode”, the operation state is supplied to the CPU 3 via the switch detection circuit 5. In this case, for example, in the case of modifying the parameter elements of the envelope waveform in the operator OP _5, CPU 3 causes the display screen G of the display unit 6 to perform the display shown in FIG. The same parts as those in FIG. 3 and FIGS. 4 to 7 are denoted by the same reference numerals.

That is, in the message display area 21, “Timbre Editor” indicating the setting of the tone (meaning editing of the parameter) and “E” indicating that the parameter element of the envelope waveform is to be corrected are displayed.
"G" and "OP5" indicating the number of the target operator are displayed. In the data display area 22, the abbreviations R1 to R4, L1 to L4, and RS of the parameter elements related to the envelope waveform are displayed in correspondence with each other. Here, the parameter elements R1 to R4 and L1 to L4 respectively define the values of each part in the envelope waveform shown in FIG. 10, where R1 is an attack rate, R2 is a decay rate, and R
3 is a sustain rate, R4 release rate, L1 is an attack level, L2 is a decay level, L3 is a sustain level, and L4 is a release level. Also, RS
Is a late scaling that defines the degree to which the rate of change of the envelope is changed depending on the pitch.

In the waveform shape display area 23, the shape of the envelope waveform based on the parameter elements displayed in the data display area 22 is displayed. In this state, since the parameter elements have not been modified yet, the values of the edit flags in FIG. 1 are all “0”.
It is. Therefore, as shown in this figure, all the dots in the status display area 24 are displayed as “white”.

[0017] Next, the operator operates the panel switch 4, to change the subject operator OP _1, further, to correct the value of the operator element R1 from "35" to "10",
When rewriting the contents of the parameter storage unit 10 _1,
The display screen G of the display unit 6 changes to that shown in FIG. That is, in the message display area 21, the operator number changes to "OP1", and the value of R1 in the data display area 22 changes to "10". In the waveform shape display area 23, the envelope corresponding to the change of the parameter element R1 changes. The waveform shape is displayed. On the other hand, CPU3
Causes the the edit flag parameter elements R1 in the operator OP ₁ to "1" (not shown). Thus, in the status display area 24, the dots corresponding to R1 in the operator OP ₁ (see FIG. 3), i.e., the upper left corner dot is displayed in "black".

[0018] Similarly, the operator operates the panel switch 4, when a plurality modify other parameter elements, the parameter storage unit 10 _1, "1" edit flag of the modified parameter elements from all "0" Changes to As a result, in the status display area 24 on the display screen G, all the dots corresponding to the corrected parameter elements are displayed as “black” (see FIG. 6). Further, when a common parameter element or a parameter element relating to another operator is corrected, the edit flag of the corrected parameter element changes to “1”, and all dots corresponding to the corrected parameter element are displayed as “black”. (See FIG. 7). In this way, the number of “black” displayed dots increases in proportion to the number of corrected parameter elements. Therefore, the number of corrected parameter elements can be determined based on the shading of the state display area 24 when observed macroscopically.

C: Modifications In the embodiment described above, the following modifications are possible. The correspondence between the parameter elements and the dots is not limited to one-to-one. For example, a configuration may be adopted in which parameter elements having the same purpose are grouped and the groups correspond to the dots. In this case, if at least one parameter element in the group is corrected, the corresponding dot is displayed as “black”. This can be achieved by associating the display of dots with the logical sum of the edit flags of the respective parameter elements in the group. With such a configuration, the number of dots forming the status display area 24 can be reduced. Can be.

The state display area 21 may be a linear array of pixels to be displayed in a bar shape, as shown in FIG. 8A, instead of a grid array of dots. In other words, the dots are replaced with bar-like displays. In this case, as the number of corrected parameter elements increases, the display becomes a barcode-like display, and the ratio of the “black” display to the entire display increases. Further, as shown in (2) of FIG. 8, the "black" display may be rearranged, accumulated at the end, and displayed as a bar graph in the status display area 21.

It is not always necessary to detect whether a parameter element has been modified from the beginning of setting. For example, an initial state in which no parameter element has been modified is "A", a state in which the parameter element has been modified last time is "A '", and a current modification state is "A". The state that you are doing as “A ''”,
A plurality of states are set, such as a comparison between “A” and “A ′”, a comparison between “A” and “A ″”, and a comparison between “A ′” and “A ″”. Alternatively, the comparison result of the two states may be displayed in the state display area 21.

[0022]

According to the present invention described above, it is possible to determine at a glance whether or not a parameter for forming a musical tone has been corrected from a predetermined state without requiring a wide display range.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an electrical configuration of an embodiment of the present invention.

FIG. 2 is a plan view showing a configuration of a display screen G of a display unit 11 in the embodiment.

FIG. 3 is a plan view showing a detailed configuration of a status display area 24 on a display screen G.

FIG. 4 is an example of a display screen G of the display unit 11 in the embodiment.

FIG. 5 is an example of a display screen G of the display unit 11 in the embodiment.

FIG. 6 is an example of a display screen G of the display unit 11 in the embodiment.

FIG. 7 is an example of a display screen G of the display unit 11 in the embodiment.

FIG. 8 is another example of the status display area 21 of the display screen G in the embodiment.

FIG. 9 is a parameter list for one operator OP.

FIG. 10 is an explanatory diagram of parameter elements that define an envelope waveform.

[Explanation of symbols]

3 ... CPU (detection means), 4 ... panel switch (correction means), 10 ... RAM (storage means), 11 ... display unit (display means)

Claims (1)

(57) [Claims] 1. A display for an electronic musical instrument for displaying a plurality of parameters for forming a musical tone, comprising: storage means for storing data values corresponding to each of the parameters; Correction means for individually correcting data values stored in the storage means, detection means for detecting, for each parameter, whether the data value stored in the storage means has been corrected by the correction means, and display corresponding to the parameter. A display unit having pixels, and each of display pixels corresponding to these parameters being provided with display means for performing an inversion or non-inversion display in accordance with a detection result of the parameter by the detection means. Parameter display device for electronic musical instruments.