JPH04324896A - Output control device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an output control device for controlling the output of a movable operator such as a fader provided on, for example, an operation panel of an electronic device.

0002

[Prior Art] Conventionally, in audio equipment such as electronic musical instruments and mixers, or video equipment, slide-type faders are often provided on the operation panel in order to improve operability when controlling the equipment. many. An example of such a fader is shown in FIG.

This fader 1 is configured by reciprocating a slide operator (hereinafter referred to as "slider") 2 along a slit 3 to adjust the resistance value of a variable resistor provided inside according to the position of the slider 2. It is used to control output such as volume within a predetermined range (in the illustrated example, a range of 0 to 127).

In addition to the volume, things controlled by such a fader 1 include the tempo, pitch, and timbre of a song in the case of audio equipment, and the brightness and contrast of images in the case of video equipment. There is.

By the way, many of today's electronic devices are controlled using processors, and audio equipment and video equipment are no exception. In an electronic device using such a processor, the control of the volume etc. by the fader 1 does not directly control the volume signal etc. by the resistance value according to the position of the slider 2 of the fader 1, but the resistance value is once digitally controlled. The data is converted into data and stored in a memory, and the volume is controlled by applying the value in the memory to, for example, an amplifier as the actual volume value to be emitted. With this configuration, the volume etc. can be controlled not only by the fader but also by other elements.

However, with the above configuration, there may be a case where the actual volume value stored in the memory does not correspond to the position of the slider 2 of the fader 1.

For example, while manipulating MIDI information with a fader, the MIDI information may change by manipulating another fader. in particular,
If you use the fader to change tone information that includes volume information while operating the volume information using the fader, the actual volume value stored in memory may change.

[0008] Furthermore, changing the internal patch may also change the actual value actually set in the memory.

Furthermore, in the case of a configuration in which one fader is selectively used in different meanings depending on the mode, the fader is operated in one mode to set a predetermined value, and then the same fader is operated in another mode. When you operate the fader to set a different value and then return to the original mode, the actual value in memory may not correspond to the current value of the fader. Also, the fader values sometimes changed due to vibrations.

[0010] If such a situation occurs, the value will change rapidly the next time the fader is moved. for example,
As shown in Figure 7, when the fader is at position α, the actual value stored in the memory due to some element is β(
If the value is changed to β>α), for example, the volume etc. will be emitted at the value of β. In such a state, if the slider is operated in the direction of increasing the volume, etc. at time T, the volume, etc. will suddenly decrease to the value α indicated by the slider, and then gradually increase according to the movement of the slider. .

[0011] Furthermore, the opposite case to the above may also occur. In other words, when the fader is set to a high volume position, etc., but the actual volume is set low, if the fader is moved in the direction of lowering the volume, etc., the volume suddenly changes once to a high volume, etc. Then, it gradually declines from there.

[0012] When such a situation occurs, there is a problem in that an unexpected sound volume or the like suddenly occurs, and the operator feels that the sound is unnatural.

[0013] Therefore, the present inventor has devised an output control device to solve this problem.

Specifically, for example, FIG. 8(A)
When the fader is moved as shown in
At time t3, the volume value remains at "40", and the operator expects the volume value to increase after time t3. However, as shown in FIG. 8B, if the actual volume value in the memory has been changed to, for example, "80" due to the above-mentioned reasons, at time t3, the volume value changes from "80" to "80". 40'', and then gradually increases depending on the fader position.

[0015] Therefore, this output control device is as shown in Fig. 8(c).
As shown in FIG. 2, no value is output until the fader position (indicated by a dashed line b) exceeds the actual value stored in the memory (indicated by a solid line a).

A flowchart of control by this output control device is shown in FIG. The figure describes the case where the volume is controlled.

First, the contents of the fader buffer Vol, which stores the volume value set on the fader, are subtracted from the contents of the volume buffer Re, which stores the actual volume value, and the result is stored in the A register ( Step S
50). Here, the A register is a general-purpose register. Next, the contents of the A register are compared with zero (step S51).

Then, when it is determined that the contents of the A register are smaller than zero (A<0), that is, the contents of the fader buffer Vol are larger than the contents of the volume buffer Re, "-1" is added to the contents of the A register. It is multiplied and put into the A register (step S52).

That is, the contents of the A register, which is a negative number, are converted to a positive number. On the other hand, if the contents of the A register are greater than or equal to zero (
A≧0), that is, if it is determined that the fader buffer Vol is less than or equal to the volume buffer Re, step S52 is skipped. As a result, the absolute value of the difference between the contents of the volume buffer Re and the contents of the fader buffer Vol is stored in the A register.

Next, the contents of the A register and a predetermined value n are compared (step S53). Here, the predetermined value n is a threshold value indicating the degree of proximity between the contents of the fader buffer Vol (current position of the fader) and the contents of the volume buffer Re (actual volume value). As shown in FIG. 10, this threshold value n is selected to be larger than the maximum distance that the slider 2 moves during one execution of the main routine loop (steps S11 to S13). this is,
This is to ensure that the fader movement is captured at least once within the range ±n of the actual volume value, so that even if the fader crosses the actual volume value, the actual volume This prevents malfunctions in which values are not changed.

[0021] Then, the contents of the A register are less than or equal to the threshold n (
When it is determined that A≦n), it is recognized that the current position of the fader and the actual volume value are close, and the contents of the fader buffer Vol are stored in the volume buffer Re (step S54). As a result, the sound will be emitted at the new volume value specified by fader 1. At this time, since the current position of the fader and the actual volume value are close to each other, no unnaturalness is felt.

On the other hand, if it is determined that the contents of the A register are larger than the threshold value n (A>n), the contents of the volume buffer Re remain in their original state and return.

[0023] As a result of the above processing, when there is a large deviation between the actual output volume value and the current position of the fader, the actual volume value does not change, and the current position of the fader is used as the actual output volume value. A function has been realized that outputs the value of the fader's current position when it approaches .

However, this output control device still has the problem that in order to change the actual volume value using the fader, it is necessary to move the slider to find a position corresponding to the actual volume value. In particular, if you want to change the volume in a direction away from the actual volume value, you have to move it once in the opposite direction, resulting in poor operability.

[0025]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and its purpose is to eliminate the need to move the fader once in the opposite direction even when moving the fader in a direction away from the actual value. An object of the present invention is to provide an output control device with excellent operability.

[0026]

[Means for Solving the Problems] The output control device of the present invention includes a movable operator for supplying a controlled variable value, a supply means for supplying another controlled variable value, and control according to a set position of the movable operator. storage means for storing the quantity value or the controlled quantity value supplied from the supplying means; and when the moving operator is moving in a direction approaching the controlled quantity value set in the storing means, the moving operator; suppressing storage of the controlled variable value in the storage means according to the set position of and outputting the controlled variable value of the storage means;
When moving in a direction away from the control amount value set in the storage means, the control amount value corresponding to the set position of the moving operator is stored in the storage means, and the control amount value of the storage means is The present invention is characterized by comprising an output control means for outputting the output.

[0027]

[Operation] In the present invention, when the control amount value stored in the storage means differs from the control amount value corresponding to the set position of the movable operator, the movable operator is set in the storage means. When the control amount value is being moved in a direction approaching the control amount value, the operation of storing the control amount value corresponding to the set position of the moving operator in the storage means is suppressed, and the control amount value stored in the storage means is stored. outputs it as it is, and when the moving operator is moved in a direction away from the control amount value set in the storage means, stores the control amount value corresponding to the set position of the moving operator in the storage means; The control amount value stored in the controller is output.

[0028] This eliminates the need to search for the actual value by moving the slider, for example, as a moving operator up and down, and by moving the slider in either direction, the output value changes. Note that if you move the slider away from the actual value, the output value will change suddenly, but this change is in the direction of the operator trying to change the volume by operating the slider. Therefore, although some degree of unnaturalness remains, it is sufficiently usable for practical use.

[0029]

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram schematically showing the configuration of an electronic musical instrument to which an embodiment of the output control device of the present invention is applied.

In the figure, reference numeral 10 denotes a keyboard section, which includes a keyboard on which a plurality of keys are arranged and a key scan circuit for detecting the pressed state of each key.

Reference numeral 11 denotes an operation panel section, which is provided with various switches (not shown) such as a power switch, a mode designation switch, a melody selection switch, and a rhythm selection switch. Further, the operation panel section 11 is provided with a plurality of faders 1 that are directly related to the features of the present invention. In this embodiment, it is assumed that the fader 1 is used to control the output of the amplifier 18, that is, the volume. The set state of each switch is shown in the keyboard section 1 above.
0, it is detected by an internal panel scan circuit. Further, data regarding the position of the slider 2 of the fader 1 is obtained by converting voltages representing each stage of 0 to 127 according to the position of the slider 2 into digital data using an A/D converter (not shown).

Reference numeral 12 denotes a central processing unit (CPU), which controls each part of the electronic musical instrument according to a program stored in a program memory section of a read-only storage device (ROM) 13. This CPU 12 includes a timer (not shown), and interrupts are generated at predetermined time intervals.

The ROM 13 contains, in addition to the program for operating the CPU 12 described above, timbre data and other various fixed data.

14 is random access memory (RAM)
A working buffer used by the CPU 12, registers for carrying out various processes in the electronic musical instrument, etc. are defined.

Reference numeral 15 denotes an interface circuit (I/O) for serial input/output. This interface circuit 15
supports MIDI (Music) communication between this electronic musical instrument and external devices.
calInstrument Digital
(Interface) Sends and receives information.

Reference numeral 16 denotes a musical tone generation circuit, which generates musical tone signals corresponding to various musical instruments by reading and reproducing musical waveform data stored in a waveform memory (not shown).

The digital musical tone signal output from this musical tone generating circuit 16 is sent to a D/A converter 17. The D/A converter 17 converts the input digital musical tone signal into an analog musical tone signal. The analog musical tone signal converted by this D/A converter 17 is
The signal is supplied to an amplifier 18.

The amplifier 18 amplifies the analog musical tone signal from the D/A converter 17 in accordance with the fader 1 assigned to the volume control. The output of this amplifier 18 is supplied to an acoustic circuit 19.

The acoustic circuit 19 converts an input analog musical tone signal as an electric signal into an acoustic signal. That is, the acoustic circuit 19 is a sound generating means represented by a speaker, headphones, etc., and emits sound.

[0040]The above keyboard section 10, operation panel section 11, CP
U12, ROM13, RAM14, interface circuit 15, and musical tone generation circuit 16 are interconnected via system bus 30.

Next, the operation of the above configuration will be explained.

FIG. 2 shows the main flowchart of the electronic musical instrument. When the power is turned on, first, initial value setting processing is executed (step S10). In this initial value setting process, various buffers, flags, registers, etc. in the RAM 14 are initialized.

Next, a switch process is executed (step S11). In this switch processing, switch data from the keyboard section 10 or operation panel section 11 stored in the switch buffer is analyzed, and processes such as mode change and cursor movement are executed according to the data.

Next, fader processing is executed (step S12). That is, based on the contents of the fader buffer provided in the RAM 14, processing according to the mode is performed. Details of this fader processing will be described later.

Next, MIDI processing is performed (step S
13). In this MIDI processing, interface circuit 1
MIDI information input/output processing is performed via 5.

Next, the process returns to step S11, and by repeatedly executing steps S11 to S13, the electronic musical instrument produces sound in accordance with the operation of the switches on the keyboard section 10 or the operation panel section 11.

On the other hand, interrupt processing is executed in parallel with the execution of the main routine. FIG. 3 is a flowchart showing this interrupt processing.

An interrupt occurs every time the count value of a counter (not shown) included in the CPU 12 reaches a predetermined value, and occurs, for example, at intervals of several milliseconds. This interrupt handling routine will be called when an interrupt occurs.

In the interrupt processing, first, the contents of the counter CNT provided in the RAM 14 are incremented (step S20).

Next, the contents of the counter CNT are set to a predetermined value m.
It is checked whether it has become (step S21). Here, the predetermined value m is a value corresponding to the number of control groups to be processed simultaneously. For example, "0" is a panel switch, "1" is a panel switch.
is a fader, ``m'' is another switch, and so on. In addition, the panel switch is further divided into multiple parts,
Furthermore, the fader may be further divided into a plurality of parts to reduce the number of units to be processed simultaneously.

If it is determined in this step S21 that the content of the counter CNT is "m", the counter CNT
is cleared to zero (step S22). On the other hand, if it is determined that the content of the counter CNT is not "m", step S22 is skipped. With the above processing,
The counter CNT is incremented each time an interrupt occurs, and cycles within the range of 0 to m.

Next, the contents of the counter CNT are checked (step S23). If it is determined that the value is "0", the switch buffer is updated (step S24). If it is determined that the value is "1", the fader buffer is updated. If it is determined that the value is "2", the buffers for other controls are updated. In the same manner, determination is made up to "m" and the assigned processing is performed.

When these processes are completed, the interrupt processing routine returns to the main routine.

Next, details of the fader processing performed in step S12 of the main routine will be explained with reference to the flowchart of FIG.

First, the magnitude relationship between the fader buffer Vol and the volume buffer Re is checked (step S
30, 31). Here, the fader buffer Vol is a value (from 0 to
127), and the volume buffer Re is a buffer that stores the volume to be output. The contents of this volume buffer Re are supplied to the amplifier 18 to control the volume of the generated musical tone.

Specifically, first, the volume buffer R
The contents of the fader buffer Vol are subtracted from the contents of e, and the result is stored in the A register (step S30). Here, the A register is a register defined in the RAM 14. Next, the contents of the A register are compared with zero (step S31).

Then, when it is determined that the contents of the A register are smaller than zero (A<0), that is, the contents of the fader buffer Vol are larger than the contents of the volume buffer Re, "1" is put in the B register (step S3
2). Here, the B register is a register defined in the RAM 14. Next, the contents of the A register are multiplied by "-1" and stored in the A register (step S33). That is, the content of the A register, which is a negative number, is converted into a positive number with the same absolute value. As a result, the absolute value of the difference between the contents of the volume buffer Re and the contents of the fader buffer Vol is stored in the A register as a positive number.

On the other hand, if it is determined in step S31 that the contents of the A register are greater than or equal to zero (A≧0), that is, that the fader buffer Vol is less than or equal to the volume buffer Re, “-1” is put in the B register ( Step S
34).

Next, the contents of the A register and a predetermined value n are compared (step S35). The predetermined value n here is different from the threshold value n explained in FIG. 9 and is simply for reducing the number of execution steps, so it does not need to be larger than the maximum distance of slider movement and may be zero depending on the case.

Then, when it is determined that the contents of the A register are less than or equal to the predetermined value n, the fader buffer Vol.
Put the contents of into the volume buffer Re (step S
41). As a result, the sound will be emitted at the new volume value specified by fader 1.

Next, the current fader buffer Vol.
The contents of are stored in the C register (step S42). Here, the C register is a register defined in the RAM 14, and is a register that stores position data of the fader 1 used in the previous process.

On the other hand, if it is determined in step S35 that the contents of the A register are greater than the predetermined value n, the following processing is performed.

First, from a predetermined value C, the fader buffer V
Subtract the contents of ol and put it in the A register (step S
36). Then, the contents of the A register are compared with zero (step S37).

[0064] Here, the contents of the A register are zero (A=0
), it is determined that the fader has not moved since the last time, that is, the fader is stopped, and the process returns from this processing routine without performing any processing.

On the other hand, if it is determined that the contents of the A register are smaller than zero (A<0), the contents of the previous fader buffer are smaller than the contents of the current fader buffer, so the fader moves upward. It is recognized that "1" has been written, and "1" is subtracted from the contents of the B register and placed in the A register (step S38). At this time, the content of the B register is "1", that is, "Volume buffer Re<
Fader buffer Vol", "0" will be stored in the A register. This state is shown in Figure 5(c)
). On the other hand, the content of the B register is "-1",
In other words, if "volume buffer Re≧fader buffer Vol", "-2" will be stored in the A register. This state is shown in FIG. 5(a).

If it is determined in step S37 that the contents of the A register are larger than zero (A>0), the contents of the previous fader buffer are larger than the contents of the current fader buffer, so the fader is lowered. It is recognized that the object is being moved in the direction, "1" is added to the contents of the B register, and the result is placed in the A register (step S39). At this time, if the content of the B register is "1", that is, "volume buffer Re<fader buffer Vol",
"2" will be stored in the A register. This state is shown in FIG. 5(d). On the other hand, if the content of the B register is "-1", that is, "Volume buffer Re≧Fader buffer Vol", the A register contains "
0" will be stored. This state is shown in Figure 5(b).
It is shown in

Next, it is checked whether the contents of the A register are zero (step S40). If it is determined that it is zero (A=0), the contents of the fader buffer Vol are put into the volume buffer Re (step S41). As a result, the sound will be emitted at the new volume value specified by fader 1. At this time, as shown in Figures 5(b) and (c), if the volume is moved away from the actual value, the volume value will change suddenly, but the volume will change in the direction the operator wants to change. Since it is a change, there is no problem.

Next, the current fader buffer Vol.
The contents of are stored in the C register (step S42), and the process returns from this fader processing routine.

On the other hand, in step S40, it is not zero (
If it is determined that A≠0), the process of putting the contents of the fader buffer Vol into the volume buffer Re (step S41) is skipped. Therefore, in this case, there is no change in volume. In this case, Fig. 5(a), (
As shown in d), if you move it in the direction closer to the actual value,
There is no change in volume until the actual value is exceeded, so
The same operational results as before can be obtained.

[0070]Then, the current fader buffer Vol
The contents of are stored in the C register (step S42), and the process returns from this fader processing routine.

With the above configuration, when the fader value and the actual output value are far apart, the slide volume value is output only when the fader is moving in a direction away from the current output value.

[0072] In the above embodiment, a case was explained in which volume information was controlled using a fader.
It goes without saying that the invention is not limited to this, and can be similarly applied to control of other information.

Further, in the above embodiment, the case where volume information of one channel is controlled has been explained, but the number of channels is arbitrary. In this case, the configuration may be such that the above-described processing is performed for each channel.

Further, in the above embodiment, a sliding type fader was explained, but the present invention is not limited to this. For example, it can be similarly applied to a rotary volume, etc., and produces the same effects as the above embodiment.

[0075]

[Effects of the Invention] As detailed above, according to the present invention,
When moving the fader away from its actual value,
It is possible to provide an output control device with excellent operability that does not need to be moved once in the opposite direction.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of an electronic musical instrument to which an output control device of the present invention is applied.

FIG. 2 is a main flowchart of the electronic musical instrument shown in FIG. 1.

FIG. 3 is a flowchart showing interrupt processing of the electronic musical instrument shown in FIG. 1;

FIG. 4 is a flowchart showing fader processing that implements the functions of the output control device of the present invention.

FIG. 5 is a diagram for explaining the operation of the embodiment of the present invention.

FIG. 6 is a diagram showing an example of a fader.

FIG. 7 is a diagram for explaining the operation of a conventional output control device.

FIG. 8 is a diagram for explaining the operation of a conventional improved output control device.

FIG. 9 is a flowchart showing the operation of the output control device shown in FIG. 8;

FIG. 10 is a diagram for explaining a threshold value n used in a conventional output control device.

[Explanation of symbols]

1 Fader (moving operator) 2 Slider 11 Operation panel section 12 CPU (output control means) 13 ROM 14 RAM (storage means) 15 Interface circuit (supply means) 16 Musical tone generation circuit

Claims (1)

[Claims] 1. A movable operator for supplying a controlled variable value, a supply means for supplying another controlled variable value, and a controlled variable value corresponding to a set position of the movable operator or a controlled variable value supplied from the supply means. storage means for storing, and when the movable operator is moving in a direction approaching the control amount value set in the storage means, the storage of a controlled variable value corresponding to the set position of the movable operator; The control amount value of the storage means is suppressed from being stored in the storage means, and when the control amount value is moved in a direction away from the control amount value set in the storage means, the control amount value is output according to the set position of the moving operator. An output control device comprising: output control means for storing a control amount value in the storage means and outputting the control amount value of the storage means.