JP3815480B2 - MIDI data editing device - Google Patents

Description

  The present invention relates to a MIDI data editing apparatus that edits MIDI (Musical Instruments Digital Interface: registered trademark) data in units of bytes, and more particularly to a MIDI data editing apparatus that can edit byte data strings corresponding to a plurality of MIDI messages.

  Conventionally, the MIDI format is known as a format of data used when transmitting and receiving musical tone data, and a MIDI data editing apparatus that edits MIDI data that is data according to the MIDI format is also known. Examples of such an apparatus include those described in Non-Patent Document 1 to Non-Patent Document 3 below. The devices described in these documents are provided with a MIDI data editing function as one function of the acoustic signal processing device.

For example, in Non-Patent Document 1, when a scene is saved, a special character is described in the comment field, and then hexadecimal data is entered and saved in numbers 0 to 9 and letters A to F. Therefore, a digital mixer having a function of outputting the text input data as a MIDI event when the scene is called is disclosed.
Non-Patent Document 2 discloses a digital mixer having a function of allowing a user to edit MIDI data of up to 16 bytes in byte units and outputting the edited MIDI data in accordance with operation of an operator such as an ON key or a fader. Is disclosed.
In Non-Patent Document 3, when the enter key is double-clicked on the parameter setting screen, an edit screen corresponding to the type of the parameter is displayed, and after the parameter value is set on the screen, the enter key is pressed In addition, a sound source device having a function of outputting a MIDI message corresponding to a set value to an external device is disclosed.

“PM1D System Software V1.6 Supplementary Manual”, Yamaha Corporation, 2003, p. 15-17 “DIGITAL PRODUCTION CONSOLE DM2000 Instruction Manual”, Yamaha Corporation, 2002, p. 218-219 “TONE GENERATOR MU2000 Instruction Manual”, Yamaha Corporation, 1999, p. 160-161

  However, in the device described in Non-Patent Document 1, when editing MIDI data, the user inputs and edits the content of a message as numeric and character text data on the editing screen. The user must understand the contents of the MIDI message to be edited by looking at the string of numbers and characters, and whether or not the MIDI data being edited is related to a plurality of MIDI messages. In other words, it was necessary to grasp where the breaks were from the data string itself. Accordingly, there is a problem that labor is required to grasp the format of the data being edited, and the editing efficiency of the MIDI data is poor.

In addition, when editing MIDI data with the device described in Non-Patent Document 2, the user can perform editing on the editing screen in which the content of the MIDI message is displayed in byte units. The point that labor is required to grasp the format and the editing efficiency of MIDI data is poor is the same as in the case of the apparatus described in Non-Patent Document 1.
The apparatus described in Non-Patent Document 3 only supports editing of a MIDI message corresponding to one parameter being edited. Therefore, there is a problem that editing of MIDI data including a plurality of MIDI messages cannot be performed efficiently.

  Further, in recent years, the MIDI format is regarded as a simple data format, and not only musical sound data but also control data for remote control of an external device such as a sound field control device or a lighting control device is described in the MIDI format. It has been broken. In order to edit the MIDI data for such use, there is a desire to edit the data as freely as possible while satisfying the minimum requirements of the MIDI format. However, in the method described in Non-Patent Document 3 for editing a MIDI message corresponding to a parameter, since a part of the MIDI message is determined when the parameter type is selected, the degree of freedom in editing is low. There was a problem that the request could not be fully met.

  SUMMARY OF THE INVENTION An object of the present invention is to solve such problems and to enable MIDI data including a plurality of MIDI messages to be efficiently edited in a MIDI data editing apparatus that edits MIDI data in byte units.

  In order to achieve the above object, a MIDI data editing apparatus according to the present invention displays a byte data string corresponding to a plurality of MIDI messages as MIDI data to be edited in a MIDI data editing apparatus for editing MIDI data in units of bytes. A display unit, an editing unit that edits the byte data string according to the received editing instruction, and a selection of one of the byte data strings displayed by the display unit is received; Means for displaying a cursor indicating a byte; detection means for detecting a MIDI message to which the selected byte belongs; and each byte constituting the MIDI message detected by the means in the other byte data string to be edited Corresponding to the distinction display that distinguishes from the byte and the content of the MIDI message And a display of the text is provided with a display control means for causing the said display means.

In such a MIDI data editing apparatus, when the data of the selected byte is changed, the detection means is made to detect the MIDI message again, and according to the result, the distinction display and the text display on the display means. It is advisable to provide means for updating
Alternatively, a means for changing the contents of the text in accordance with the received change instruction, and when an instruction to reflect the change is received, a MIDI message corresponding to the changed text is generated, and the generated MIDI Means for overwriting the message from the head position of the MIDI message detected by the detecting means may be provided.

  According to the MIDI data editing apparatus of the present invention as described above, MIDI data including a plurality of MIDI messages can be efficiently edited in a MIDI data editing apparatus that edits MIDI data in units of bytes.

Hereinafter, the best mode for carrying out the present invention will be specifically described with reference to the drawings.
First, the configuration of a digital mixer having a MIDI data editing function, which is an embodiment of the MIDI data editing apparatus of the present invention, will be described. FIG. 1 is a block diagram showing a schematic configuration of the digital mixer.
As shown in FIG. 1, this digital mixer (hereinafter also simply referred to as “mixer”) includes a CPU 11, a flash memory 12, a RAM 13, an external device interface (I / F) 14, a display 15, an acoustic signal input / output unit 16, A signal processing unit (DSP) 17, a switch 18, a fader 21, and a rotary encoder 24 are provided, and these are connected by a system bus 19. And it has the function to perform various signal processing with respect to the input acoustic signal, and to output.

The CPU 11 is a control unit that performs overall control of the operation of the entire mixer. By executing a predetermined control program stored in the flash memory 12, the CPU 11 controls the display on the display 15, the switch 18, the fader 21, The operation of the rotary encoder 24 is detected, the parameter value is changed according to the operation, the setting data is stored and recalled, and the operation of the DSP 17 is controlled according to the set parameter value. Of course, control processing related to the implementation of the MIDI data editing function is also performed.
The flash memory 12 is a rewritable nonvolatile storage means for storing a control program executed by the CPU 11, various setting data, MIDI data edited by the mixer, and the like.

The RAM 13 functions as a current memory to store current data which is setting data indicating the current state of the mixer, functions as a setting data memory to store a library of setting data, and is used as a work memory for the CPU 11. It is a storage means. Of course, the RAM 13 can perform these functions simultaneously.
The external device I / F 14 is an interface for exchanging information with an external device such as a personal computer connected to the mixer. This interface also includes an interface for transmitting and receiving MIDI data. When outputting MIDI data as will be described later, the data is output via the external device I / F 14.
The display 15 is a display means provided on the operation panel of the mixer and configured by a liquid crystal display (LCD) or the like. It has a function of displaying a screen for referring to, changing, saving, editing MIDI data, etc., a screen showing the operation state of the mixer, and the like.

The acoustic signal input / output unit 16 is an interface for receiving an input of an acoustic signal to be processed by the DSP 17 and outputting the processed acoustic signal. The acoustic signal input / output unit 16 includes one A / D conversion board capable of analog input of 4 channels (ch), one D / A conversion board capable of analog output of 4 ch, and one sheet. Thus, a plurality of digital input / output boards capable of 8ch digital input / output can be mounted in appropriate combinations, and signals are actually input / output through these boards.
The DSP 17 is a module that performs signal processing according to the values of various parameters set as current data for the acoustic signal input from the acoustic signal input / output unit.

  The switch 18, the fader 21, and the rotary encoder 24 are provided on the operation panel of this mixer, and are operators for the user to set parameters relating to the processing of the acoustic signal. Of these, the fader 21 is a slider operator having a motor, and the knob can be moved to a designated position by an instruction from the CPU 11. The rotary encoder 24 has a function of detecting the rotation amount of the knob as an operation amount. The switch 18 refers to various operators other than the fader 21 and the rotary encoder 24 provided on the operation panel.

Next, FIG. 2 shows a schematic configuration of the operation panel of this digital mixer.
This operation panel 10 is provided with a display 15, and by operating various controls while referring to the display screen displayed here, it is instructed to change parameters used for signal processing or the like in the DSP 17. This is for editing parameters and editing MIDI messages to be output. For this purpose, a channel strip 20, a layer selection key group 30, an edit / operation key group 40, a cursor key 50, an increase / decrease operation element 60, an enter key 70, and the like are provided.

Here, the outline of the function of each of these operators will be described.
As for the ch strip 20, here, 16 ch strips 20 are provided side by side. Each channel strip 20 is assigned a fader 21 for setting an output level, an on key 22 for setting on / off, a selection key 23 for selecting a corresponding channel, and a parameter selected by the user. A rotary encoder 24 used for parameter control, and an encoder on key 25 for enabling / disabling operation by the rotary encoder 24 are provided. If there is no problem in terms of cost and space, an operator or a rotary encoder corresponding to another parameter may be provided.
Each channel strip 20 is assigned either an input channel or an output channel in the signal processing of the DSP 17, and each operator of the channel strip 20 basically controls the parameters of the channel, and values Functions as an operator for setting.

  Further, although the channel assignment to the ch strip 20 is performed using layers, each key of the layer selection key group 30 is a key for selecting this layer and assigning a channel to the ch strip 20. . For example, when the layer 1 selection key 31 is pressed, the first layer can be selected and the first to sixteenth input channels can be assigned to each channel strip 20. The layer 2 can also be selected by pressing the layer 2 selection key 32. The layer to which the output channel is assigned is prepared as a master layer, and this layer can be selected by the master layer selection key 33.

  Further, in this mixer, MIDI data can be output from the external device I / F 14 in response to the operation of each operator in the ch strip 20. A remote layer is provided as a layer for assigning MIDI data to be output to each operator, and this remote layer can be selected by pressing a remote layer selection key 34. The assignment of MIDI data in the remote layer and the editing method of the assigned MIDI data will be described in detail later.

  Next, the editing / operation key group 40 is various keys for instructing editing / calling / storing of setting data in this mixer, switching of a screen to be displayed on the display unit 15, changing of the operation mode of the mixer, and the like. is there. The editing / operation key group 40 displays a remote layer editing screen on the display 15 and performs an operation in a remote layer editing mode for editing a MIDI message assigned to each operation element in the remote layer on this mixer. MIDI remote editing key 41 is included.

The cursor key 50 is an operator for operating a cursor displayed on the display screen of the display device 15 (not limited to a MIDI data editing screen 200 described later). The increase / decrease operator 60 is an operator for increasing / decreasing the parameter displayed at the cursor position in the display screen. The increase / decrease operation element 60 is composed of a rotary encoder 61 and an increase key 62 and a decrease key 63. Either can be used to instruct increase / decrease.
Furthermore, a pointing device such as a mouse (not shown) and an information input device such as a keyboard are provided, and a GUI (graphical user interface) displayed on the display unit 15 is used to select from a pull-down menu and enter a text box. It is also possible to set a parameter value by inputting a value or the like.
The enter key 70 is a key for validating the changed value.

Next, a MIDI data editing function in this digital mixer and a process for realizing the function will be described.
First, FIG. 3 shows a display example of the remote layer editing screen.
As described above, the remote layer editing screen 100 is a screen for editing MIDI data assigned to each operator in the remote layer.

In this screen, first, the ch strip selection unit 101 can select which ch strip is associated with the MIDI data to be assigned to the operation element. The ch strip name editing unit 102 can edit the name of the ch strip selected by the ch strip selection unit 101.
In this mixer, MIDI data is assigned to each operator for each bank, and the MIDI data assigned to the operator can be switched by selecting a bank. The buttons for selecting the bank are the bank selection buttons 103 from 1 to 4, and the bank name editing unit 104 can edit the name of the selected bank. When the initialization button 105 is pressed, all the MIDI data assigned to each operator in the selected bank can be initialized. Note that the initial state may be a state in which all data is blank or a state in which predetermined data is set.

  The remote layer editing screen 100 includes an encoder on-key editing unit 110, an encoder editing unit 120, an on-key editing unit 130, and a fader editing unit 140 as areas for editing the MIDI data assigned to each operator. In each of these areas, the MIDI data assigned to the encoder on key 25, the rotary encoder 24, the on key 22, and the fader 21 of each ch strip 20 can be edited in the remote layer. In this mixer, MIDI data is not assigned to the selection key 23, and no editing unit corresponding to the selection key 23 is provided.

Since each of these editing units has a substantially similar configuration, the encoder on-key editing unit 110 will be described as a representative. This editing unit includes an operator type display unit 111, a MIDI data display unit 112, an editing unit, and an editing unit. A button 114, a latch mode setting button 115, and a learn mode setting button 116 are provided.
The operator type display unit 111 is a display unit that displays the type of the operator corresponding to each editing unit, and the contents of the display unit cannot be changed.

The MIDI data display unit 112 is a display unit that displays MIDI data to be assigned to an operator, that is, MIDI data to be edited. One frame of data is displayed for each frame, and MIDI data can be displayed as a byte data string of 16 bytes in total. Since one MIDI message is usually 1 to 3 bytes, the MIDI data display unit 112 can naturally display a byte data string corresponding to a plurality of MIDI messages.
When the user clicks on any frame in the MIDI data display unit 112 and selects a specific byte in the MIDI data, the cursor 113 (indicated by shading) can be moved to that frame. The display contents and the MIDI data editing method in the MIDI data display unit 112 are the same as those in the MIDI data display unit 211 of the MIDI data editing screen 200 described later, and will be described in detail later in the description of the MIDI data display unit 211. To do.

  The edit button 114 is a button for displaying a MIDI data edit screen for editing MIDI data using various functions than those in the remote layer edit screen 100. When this button is pressed, A MIDI data editing screen for editing the MIDI data displayed on the MIDI data display unit 112 to be displayed is displayed in a pop-up.

The latch mode setting button 115 is a button for setting the latch mode and the unlatch mode with a toggle. Of these, the latch mode is a mode for outputting MIDI data corresponding to the “ON” and “OFF” states when the encoder on key 25 is pressed and released, and the unlatch mode is a mode in which the encoder on key 25 is output. This is a mode in which the MIDI data corresponding to the “ON” or “OFF” state is toggled to output each time the button is pressed. The correspondence between the key “ON” or “OFF” and the MIDI data will be described later. As a matter of course, the latch mode setting button is provided only in the editing section corresponding to the operation element for setting ON / OFF.
The learn mode setting button 116 is a button for setting ON / OFF of the learn mode. This learn mode is a mode in which when MIDI data is received from an external device, the contents are read as MIDI data to be edited, and can be turned on only by a maximum of one editing unit at a time.

Next, FIG. 4 shows a display example of the MIDI data editing screen.
The MIDI data editing screen 200 is a screen for editing MIDI data as described above, and is provided with a MIDI data editing unit 210, an enter button 221, a text display unit 230, an OK button 241, and a cancel button 242.
Of these, the MIDI data editing unit 210 is an area for displaying the MIDI data to be edited as a byte data string on the MIDI data display unit 211 and receiving an editing operation for each byte. This MIDI data display unit 211 is different from the MIDI data display unit 112 of the remote layer editing screen 100 in that the data is displayed in two stages of 8 bytes each. However, the display and editing format is the MIDI data display unit 112. It is the same as the case of.
The other copy button 213, paste button 214, cursor button 215, insert button 216, delete button 217, and clear button 218 are buttons for the user to instruct edit contents and movement of the cursor 212 during this editing.

Here, a method of displaying and editing MIDI data in the MIDI data display unit 211 will be described.
As described above, the MIDI data display unit 211 displays the MIDI data to be edited as a byte data string. Here, however, the MIDI message to which the selected byte (the byte where the cursor 212 is located) belongs is further detected. Then, a distinction display is performed in which each byte constituting the MIDI message is displayed so as to be distinguished from other bytes in the MIDI data.
This distinction can be made by various elements such as color, size, font, brightness, shading, underlining, blinking, and inversion so that the MIDI message to which the selected byte belongs is emphasized. However, for convenience of illustration, it is assumed here that the bytes to be displayed are distinguished from others by describing the characters in italics.

  Further, the detection of the MIDI message can be performed by using the information of the format defined for the MIDI message. That is, in the MIDI message, the status byte and the data byte can be distinguished depending on whether the most significant bit of each byte is “1” or “0”. Is also identified. Therefore, when the previous byte is traced sequentially from the position of the cursor 212 and the status byte is found, the status byte and a predetermined number of data bytes immediately after it can be detected as one MIDI message. If the byte where the cursor 212 is located is included in the detected MIDI message, it can be determined that the MIDI message is the MIDI message to which the selected byte belongs.

  The MIDI message also defines a format called a running status. When MIDI messages having a common status byte are continuously transmitted, the status byte is omitted in the second and subsequent MIDI messages. Only data bytes are transferred. Therefore, if the byte where the cursor 212 is located is not included in the MIDI message detected by tracing the previous byte as described above, the MIDI message to which the selected byte belongs is the MIDI message described as the running status. You can think of it.

Therefore, in such a case, the data byte following the found status byte is divided by the number of data bytes corresponding to the type of the status byte, and the division to which the byte where the cursor 212 is located belongs to the selected byte. It can be determined that the message belongs to the MIDI message. At this time, if the status byte corresponding to the MIDI message is also displayed separately from the other parts, the display becomes easy to understand, but the status byte may be handled as not included in the MIDI message.
The content of the MIDI message detected as described above is displayed on the text display unit 230 as text corresponding to the content of the MIDI message. This will be described later.

If the status byte that was found is out of the specified range, there is a status byte where the data byte should be, or the data byte value is inappropriate, the selected byte is When the MIDI message to which it belongs cannot be normally recognized, no distinction display is performed, and all bytes of the MIDI data being edited are displayed in the same manner. The same applies when no data is input at the position of the cursor 212.
The cursor 212 can be moved to the position of another byte by an instruction from the cursor key 50 or the pointing device. However, if the cursor 212 is moved outside the range of the byte that is distinguished and displayed, a new one is displayed. A MIDI message including the byte at the cursor position is detected again, and the contents of the discrimination display are updated based on the result.

  Further, in the MIDI data display unit 211, the data of the byte where the cursor 212 is located can be changed by increasing / decreasing with the increase / decrease operation element 60 or by directly inputting a value from a keyboard or the like. That is, MIDI data can be edited in byte units. Even when such a change is made, the MIDI message to which the byte where the cursor 212 is located belongs is re-detected based on the changed data, and the contents of the discrimination display are updated based on the result. Yes.

  Here, in each byte, an operator code can be input as data indicating that a value corresponding to the state of a specific operator of the same ch strip 20 is substituted in addition to a 2-digit hexadecimal number. For example, the operator code of the encoder on key 25 is “SW1”, but when MIDI data including this data is output when the operator is pressed, the encoder on key 25 is in the “OFF” state or the “ON” state. Accordingly, the MIDI data in which the byte of “SW1” is replaced with “00H” or “7FH (127 in decimal)” is output. Here, “H” is a symbol indicating that the numerical value is expressed in hexadecimal.

The operator code of the on key 22 is “SW2”, and the byte of the “SW1” portion is replaced with “00H” or “7FH” according to the state of the on key 22 as in the above case. The operator codes of the rotary encoder 24 and the fader 21 are “ENC” and “FAD”, respectively, and at the time of output, this part is any one of “00H” to “7FH” corresponding to the position of the encoder 24 or the fader 21. Replace with a 1-byte numeric value.
For these data, data related to an operator different from the assigned operator can also be used. For example, editing may be performed so that the operation data of the fader 21 is included in the MIDI data assigned to the ON key 22.

In addition to these, “END” and “NOP (no operation)” data can be input to each byte. The former is data indicating the end of the MIDI data to be output, and the data input in the byte after this data is not output. However, it is not essential to enter “END” at the end of the MIDI data. The latter is data indicating that there is no data, and the byte in which this data is input is ignored when MIDI data is output. In the figure, blanks indicate bytes for which no data is input. A byte for which no data is input is indicated by “−” in the MIDI data display unit 112 of the remote layer editing screen 100.
The data other than the numerical values as described above can be selected and input by the increase / decrease operator 60 in the same row as the numerical values. For example, data other than a numerical value may be selected after the maximum numerical value.

Next, moving to description of other parts of the MIDI data editing screen 200, the text display unit 230 is a display unit that displays text corresponding to the content of the MIDI message that is displayed in a different manner in the MIDI data display unit 211. is there.
The message type display unit 231 determines the type of the MIDI message from the contents of the status byte, and displays the type. The channel display unit 232 displays the channel number when the lower 4 bits of the status byte indicate the channel number. The first data display unit 233 and the second data display unit 234 display the data of the first data byte and the second data byte, respectively. This display is easy to understand if it is performed in decimal numbers. Further, an operator code such as “FAD”, “END” and “NOP” are displayed as they are as a character string or an appropriate symbol.

  Note that depending on the type of MIDI message, there may be no channel number or data byte. In such a case, a display unit without data to be displayed is displayed darkly or erased to indicate that fact. I am doing so. Further, when editing or moving of the cursor is performed in the MIDI data display unit 211, and the content of the MIDI message being distinguished and displayed is changed due to the re-detection of the MIDI message, the display of the text display unit 230 is accordingly performed. Also try to change. If no distinction display is made due to a MIDI message detection failure or the like, the message type display unit 231 displays that the corresponding message is informed, for example, “NO MESSAGE”. Other display units may be displayed in the same manner as when there is no data to be displayed.

In addition, each display unit of the text display unit 230 is provided with a change button (for example, the one provided in the second data display unit 234 is denoted by reference numeral 234a). By pressing this change button, the text data being displayed is displayed next. Can be changed to a candidate or previous candidate. For example, when the change button 234a is pressed in the state shown in FIG. 4, the display content of the second data display unit 234 can be changed to “1” as the next candidate.
In the state shown in FIG. 4, the message type display unit 231 also displays a change button for changing the text data being displayed to the previous candidate on the left side, but the other display units are currently displaying Since the data is the first candidate and there is no previous candidate, only the change button for changing to the next candidate on the right side is displayed. Of course, in the other display units, if there are previous candidates, a change button on the left side as in the case of the message type display unit 231 is also displayed. On the other hand, the right change button is not displayed on the display section where the last candidate is displayed and the next candidate does not exist.

  The change of the text data can be instructed by the increase / decrease operator 60 or can be instructed by directly inputting from the keyboard. Further, a pull-down menu or the like may be used. Further, when the display of the message type display unit 231 is changed, when the presence / absence of the message ch number of the type or the number of associated data bytes is changed, the display state of each display unit is updated accordingly. It is good to.

  The enter button 221 is a key for reflecting the change of the text data as described above in the MIDI data of the MIDI data display unit 211. When the user displays the content of the MIDI message to be input to the text display unit 230 by the change as described above and presses the enter button 221, the byte data string of the MIDI message indicating the content is displayed in the MIDI data display unit 211. So that you can type in. This input is performed by overwriting the byte data string to be input from the head position of the MIDI message to which the byte where the cursor 212 is located belongs. When the cursor 212 is positioned at the “END” or “NOP” byte, it may be overwritten from the position of the cursor 212 at that time or overwritten so as to be input following the immediately preceding MIDI message.

Then, after editing using the functions as described above, the user can return to the remote layer editing screen 100 by reflecting the editing result by pressing the OK button 241. If the cancel button 242 is pressed, the remote layer editing screen 100 can be returned without reflecting the editing result.
In this mixer, the MIDI data editing function as described above is provided, so that MIDI data can be edited in units of bytes, and the boundaries of the MIDI message can be easily recognized, and the message can be displayed by text display. Since editing can be performed while grasping the contents, the efficiency of editing MIDI data can be improved.

  Next, an example of the MIDI data editing procedure on the MIDI data editing screen 200 will be described with reference to FIGS. FIGS. 5 and 6 are a series of diagrams showing transition examples of screen display when MIDI data editing work is performed on the MIDI data editing screen. In each of the display examples shown in these figures, the same reference numerals as those in FIG.

  When the user presses any edit button on the remote layer edit screen shown in FIG. 3, the CPU 11 pops up a MIDI data edit screen 200 for editing the MIDI data corresponding to the edit button on the display unit 15. Display. At this time, the byte data string displayed on the MIDI data display unit corresponding to the pressed edit button is displayed on the MIDI data display unit 211 as the initial data. The initial position of the cursor 212 may be a position corresponding to the position of the cursor on the remote layer editing screen 100, or may be displayed at the position of the first byte or the position of the cursor 212 when the previous MIDI data editing screen 200 is closed. You may do it.

  Here, an example is shown in which a 6-byte byte data string of B0H, 62H, 00H, 80H, 00H, and 00H is set as initial data. The first 3 bytes are a MIDI control change message, and the last 3 bytes are a MIDI note-on message. The cursor 212 is positioned at the first byte as the initial position. The MIDI data display unit 211 displays the MIDI control change message to which the byte belongs, and the text display unit 230 displays the MIDI control change message. The text showing the contents is displayed. (Step 1)

Here, even if the cursor 212 is moved two places to the right (up to the third byte), the cursor 212 only moves within the MIDI control change message, that is, within the currently distinguished byte. The display of the display and text display unit 230 does not change. (Step 2)
However, if the cursor 212 is moved further to the right (up to the fourth byte), the cursor 212 moves out of the MIDI control change message. Therefore, the MIDI message to which the destination byte belongs is detected, and the detected MIDI is detected. A note-on message is displayed separately. Accordingly, the display content of the text display unit 230 is also updated to text indicating the content of the MIDI note-on message. (Step 3)

  Next, proceeding to FIG. 6, when the value of the byte at the cursor position is increased by 1 by operating the rotary encoder 61, the MIDI message is also re-detected, and accordingly, the MIDI data display unit 211 and the text display unit 230. The display is updated. The cursor position at this time is a status byte, and 81H indicates a MIDI note-on message for 2ch. Since there is no change that the MIDI message to which the byte at the cursor position belongs is a MIDI note-on message of 3 bytes later, the position of the byte to be displayed is not changed. (Step 4)

Next, when the change button 233a is pressed, the display content of the first data display unit 233 is changed to “1” accordingly. At this time, the display of the MIDI data display unit 211 and the MIDI data to be edited are still displayed. There is no change in content. (Step 5)
After that, when the enter button 221 is pressed, a MIDI message according to the display content of the text display section 230 after the change is created and overwritten with the MIDI message including the byte at the cursor 212 position. In the example shown in the figure, a 3-byte MIDI note-on message of 81H, 01H, and 00H is created and overwritten from the 4th byte of the MIDI data display unit 211. (Step 6)
In this mixer, MIDI data can be edited by the above operation.

Next, an example of processing for realizing the function related to editing of MIDI data as described above and the function related to output of MIDI data according to the operation of the operation element will be described.
First, FIG. 7 shows a flowchart of processing executed by the CPU 11 when any editing button is pressed on the remote layer editing screen 100.
In this process, the CPU 11 first pops up the frame of the MIDI data editing screen 200 on the display unit 15 (S11), reads out the MIDI data corresponding to the edited button that has been pressed and displays it on the MIDI data display unit 211. The cursor 212 is displayed at the initial position (S12, S13). Thereafter, the MIDI message to which the byte at the position of the cursor 212 belongs is detected (S14), and the bytes constituting the detected MIDI message are displayed separately from other bytes on the MIDI data display unit (S15). Thereafter, the text corresponding to the content of the MIDI message detected in step S14 is displayed on each display unit in the text display unit 230 (S16), and the process is terminated.

  Through the above processing, the MIDI data editing screen for editing the MIDI data corresponding to the pressed edit button can be displayed on the display unit 15. In the above processing, the CPU 11 functions as a detection unit in step S14, and functions as a display control unit in steps S15 and S16. Details of detection and display in these processes are as described above.

Next, FIG. 8 shows a flowchart of processing executed by the CPU 11 when an instruction to move the cursor 212 on the MIDI data editing screen 200 is given.
In this process, the CPU 11 first moves the cursor 212 in the instructed direction on the MIDI data display unit 211 (S21). If the cursor has not moved out of the currently distinguished byte range, the process ends. If it has moved out of the range, the process proceeds to step S23 and subsequent steps (S22).

Then, as in the case of steps S14 to S16 in FIG. 7, the MIDI message to which the byte at the new position of the cursor 212 belongs is detected, and the state of distinction display and the display on the text display unit 230 are detected according to the detected MIDI message Is updated (S23 to S25), and the process is terminated.
With the above processing, even when the cursor 212 is moved, it is possible to always perform the distinction display and the text display indicating the MIDI message to which the byte where the cursor 212 is located belongs.

Next, FIG. 9 shows a flowchart of processing executed by the CPU 11 when an instruction to change data at the position of the cursor 212 is given on the MIDI data editing screen 200. In this case, the change instruction can be received by an input from the increase / decrease operator 60 or a keyboard (not shown).
In this process, the CPU 11 first changes the byte data at the position of the cursor 212 to the instructed value in the MIDI data display unit 211, stores it, and redisplays it (S31). Then, the MIDI message to which the byte at the position belongs is redetected (S32), and based on the result, the distinction display on the MIDI data display unit 211 and the display on the text display unit 230 are updated (S33, S34), and the process is terminated. To do. Details of the re-detection and display update processes in these processes are as described above.

  Next, FIG. 10 shows a flowchart of processing executed by the CPU 11 when an instruction to change the display contents in the text display unit 230 is given. It is only changed according to (S41).

Next, FIG. 11 shows a flowchart of processing executed by the CPU 11 when the enter button 221 is pressed on the MIDI data editing screen 200.
In this process, the CPU 11 first creates a MIDI message corresponding to the text being displayed on the text display unit 230 (S51). Then, each byte of the created MIDI message is overwritten from the head position of the MIDI message that is displayed in a different manner in the MIDI data display unit 211, and the display of the MIDI data display unit 211 is updated (S52). Then, the overwritten MIDI message is displayed in a distinguishable manner (S53), and the process is terminated.

  By performing the processing as described above, the change of the MIDI message performed in the text display unit 230 can be reflected in the MIDI data display unit 211. It is also possible to add a MIDI message whose contents are specified in the text display section 230 to the MIDI data being edited with one touch. At this time, the user does not need to know what code the MIDI message having the designated content is actually expressed. Furthermore, even if the cursor 212 is not placed immediately after the previous MIDI message, a new MIDI message can be automatically added immediately after the previous MIDI message. Therefore, the efficiency and operability of MIDI data editing can be greatly improved.

As for the overwrite position in step S52, the overwrite start position may be the first byte of the distinctly displayed bytes, but in the case of a MIDI message described using the running status, the data byte It is good to be the head of. That is, it is preferable to start overwriting from a position as shown in FIG.
In addition, when the number of bytes of the MIDI message is different before and after overwriting, it may be overwritten by ignoring the difference in the number of bytes, or the position of the message on the back side is changed in consideration of the difference in the number of bytes. You may do it. In the example shown in FIG. 12, an example in which a 3-byte MIDI message is overwritten is shown. However, when the second MIDI message is overwritten, a part of the third message on the rear side is also displayed. Overwriting is done in an overlapping manner.

Next, FIG. 13 shows a flowchart of processing executed by the CPU 11 when any of the operators assigned with MIDI data is operated.
In this process, the CPU 11 first updates the operation data for the operated operation device according to the operation content (S61), and also updates the display content on the display 15 and the LED (S62). The operator data is a register for storing a value corresponding to the state of the operator in order to replace the operator code.

Next, the MIDI data assigned to the operated operator is read from the beginning to “END” while skipping “NOP” (S63), and when the operator code is included in the read MIDI data. Replaces each operator code with the corresponding operator data, transmits the replaced MIDI data (S64 to S66), and ends the process. If there is no operator code, the read MIDI data is transmitted as it is, and the process is terminated.
This transmission is connected to the mixer by a MIDI cable, a USB (Universal Serial Bus) cable, an IEEE (Institute of Electrical and Electronic Engineers) 1394 cable, a wireless LAN (Local Area Network), and the like as a transmission destination of MIDI data. Although it is performed for the set external device, the processing of the CPU 11 may be performed by transmitting to a logically set MIDI port.

  By performing the processing as described above, the MIDI data edited on the remote layer editing screen 100 or the MIDI data editing screen 200 and assigned to the operator can be output according to the operation of the operator. Can control an external device compatible with MIDI. In this case, the device that receives the MIDI data does not need to be an audio device, and the received MIDI data does not need to be interpreted according to the standard. The MIDI data can be used to control the lighting device and the sound field control device.

Although the description of the embodiment is finished as described above, the present invention is not limited to the above embodiment.
For example, the relationship between the status byte and the message type is defined by the MIDI standard, but the operation of the device that actually received the MIDI message in accordance with the data is determined by the counterpart device. It depends on the design. As described above, the MIDI data is also used for controlling the lighting equipment. In such a case, each MIDI message is naturally used as a message having a meaning different from the meaning defined in the standard. Therefore, when the correspondence relationship between the contents of the MIDI message and the application in the transmission destination device is different from that defined in the standard, and the correspondence relationship can be grasped on the mixer side, the text display unit 230 distinguishes the correspondence. You may make it display the text which shows the use in the transmission destination apparatus of the displayed MIDI message. In this way, since the user can perform editing while grasping the purpose of each MIDI message in the MIDI data, the editing efficiency of the MIDI data can be further improved. In this case, even if the message type conforming to the standard is displayed, the user can give a clue to grasp the contents of the MIDI message.

Further, it goes without saying that the configuration of the remote layer editing screen 100 and the MIDI data editing screen 200 and the display format of MIDI data and text are not limited to those described above. In addition to the MIDI data assigned to the channel strip operators, the MIDI data generated when the scene as the setting data is recalled and the MIDI data generated in response to the operation of any operator (including those displayed on the screen) The present invention can be applied to a MIDI data editing apparatus that edits various MIDI data such as MIDI data generated in response to timing detection by a timer. Of course, the length of the MIDI data to be edited is not limited to 16 bytes.
Furthermore, although the digital mixer having the MIDI data editing function has been described as an example here, the present invention can be applied to other acoustic signal processing devices and electronic devices having the MIDI data editing function, or devices dedicated to MIDI data editing. Of course.

  As is apparent from the above description, according to the MIDI data editing apparatus of the present invention, MIDI data including a plurality of MIDI messages can be efficiently edited in a MIDI data editing apparatus that edits MIDI data in units of bytes. be able to. Therefore, if this invention is used, a MIDI data editing apparatus with good operability can be provided.

It is a block diagram which shows the structure of the digital mixer provided with the MIDI data editing function which is embodiment of the MIDI data editing apparatus of this invention. It is a figure which shows schematic structure of the operation panel of the digital mixer. It is a figure which shows the example of the remote layer edit screen displayed on the indicator of the operation panel. It is a figure which similarly shows the example of a MIDI data edit screen. It is a figure which shows the example of a transition of a screen display at the time of editing work of MIDI data in the MIDI data edit screen. It is a figure which shows the continuation. It is a flowchart of the process performed when one of edit buttons is pressed in the remote layer edit screen shown in FIG. 5 is a flowchart of processing executed when an instruction to move the cursor is given on the MIDI data editing screen shown in FIG. Similarly, it is a flowchart of processing executed when an instruction to change data at the cursor position is given. Similarly, it is a flowchart of processing executed when an instruction to change display contents in a text display unit is given. Similarly, it is a flowchart of processing executed when an enter button is pressed. It is a figure for demonstrating the process in the case of overwriting the MIDI message produced by the process shown in FIG. 11 to the MIDI message described using the running status. It is a flowchart of a process performed when one of the operators assigned with MIDI data is operated.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... CPU, 12 ... Flash memory, 13 ... RAM, 14 ... External device I / F, 15 ... Display device, 16 ... Sound signal input / output unit, 17 ... DSP, 18 ... Switch, 19 ... System bus, 20 ... ch Strip, 21 ... fader, 22 ... on key, 23 ... select key, 24 ... rotary encoder, 25 ... encoder on key, 30 ... layer selection key group, 40 ... edit / operation key group, 41 ... MIDI remote edit key, 50 ... cursor Key ... 60 ... Increase / decrease operator, 70 ... Enter key, 100 ... Remote layer edit screen, 110 ... Edit section for encoder on key, 112, 211 ... MIDI data display section, 113, 212 ... Cursor, 114 ... Edit button, 120 ... Encoder Editing unit, 130 ... on-key editing unit, 140 ... fader editing unit, 200 ... MI I data editing screen, 210 ... MIDI data editing unit, 221 ... enter button, 230 ... text display unit

Claims (3)

A MIDI data editing device for editing MIDI data in byte units,
Display means for displaying byte data strings corresponding to a plurality of MIDI messages as MIDI data to be edited;
An editing means for editing the byte data string according to the received editing instruction;
Means for accepting selection of any one of the byte data strings displayed by the display means, and displaying a cursor indicating the bytes on the display means;
Detecting means for detecting a MIDI message to which the selected byte belongs;
The display means includes a distinction display for distinguishing each byte constituting the MIDI message detected by the means from other bytes in the byte data string to be edited, and a display of text corresponding to the content of the MIDI message. A MIDI data editing apparatus characterized by comprising display control means for performing the above operation. The MIDI data editing apparatus according to claim 1,
When the data of the selected byte is changed, there is provided means for causing the detection means to detect the MIDI message again and updating the display of the distinction display and the text on the display means according to the result. Feature MIDI data editing device. The MIDI data editing apparatus according to claim 1,
Means for changing the content of the text in accordance with the received change instruction;
Means for generating a MIDI message corresponding to the changed text when an instruction to reflect the change is received and overwriting the generated MIDI message from the head position of the MIDI message detected by the detection means; A MIDI data editing apparatus characterized by being provided.

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