JP4238825B2 - Music data processing apparatus and program - Google Patents

Description

  The present invention relates to a music data processing system capable of switching a large number of registrations within one music data.

Conventionally, in an electronic music apparatus such as an electronic musical instrument, a plurality of sets of various panel setting states related to musical tone control are stored as registration data, and one of the sets is selectively switched sequentially as the music performance progresses. There is a device, and an electronic musical instrument equipped with such a device is disclosed in Patent Document 1, for example.
Japanese Patent No. 3116557

  In the electronic musical instrument disclosed in Patent Document 1, a plurality of (8) resist data (registration data) REGD (1) to REGD (8) are stored for one song data (music data), and each resist is registered. The registration data reading order is stored as registration shift data RESD (1) to RESD (11) (refer to Patent Document 1 and FIG. 4), thereby switching and setting up to eight registrations for one song data. can do.

  In addition, in the above-described registration shift data, a next mark NEXT indicating that there is subsequent registration shift data can be stored, and when this next mark is read, it is set corresponding to the next song data. The registered resist data can be read out.

  However, since it is necessary to associate the eight registration switches (registration instruction switches) RSW1 to RSW8 provided on the panel of the electronic musical instrument with each registration data, a finite number (8) for one song data Only the registration data can be stored. In other words, only one (8) resist data can be stored for one song data.

  Therefore, if you want to use nine or more resist data, you can use the resist data of the next song data using the next mark NEXT function, but “the resist data of the next song data is the previous music data. It is difficult to understand the concept of `` use when performing '', and only the registration data and registration shift data should be included in the next song data, and automatic performance data should not be included. The contents of will be switched.

  In view of such circumstances, the present invention associates a plurality of registration data groups with respect to one music data, and easily switches a number of registration data while automatically switching the registration data group within one music data. An object of the present invention is to provide a music data processing system capable of switching between and performing a performance.

  According to the main feature of the present invention, the registration sequence data (RS) in which the next group designation information (NX) and the in-group registration instruction information (b) are recorded as an event following the progress of the performance of one piece of music, each of which includes a plurality of registrations. Music data (SD) for inputting music data (SD) including a plurality (n) of registration data groups (RG1 to RGn) composed of data and group order defining data (NG) defining the reading order of each registration data group Input means (S2 to S5, R3 to R6), sequence reading means (R1, R2) for sequentially reading out the event (NX, b) of the resist sequence data (RS) from the input music data (ST) according to the performance progress; The event read by the sequence reading means (R1, R2) is the next group designation information (NX). (R2 → YES), a group for selecting a registration data group (RGa) defined in the next order by group order definition data (NG) from a plurality of registration data groups (RG1 to RGn) When the event read by the selection means (R6) and the sequence reading means (R1, R2) is the in-group registration instruction information (b) (R2 → NO), the currently selected registration data group ( A music data processing apparatus (electronic music apparatus) comprising registration data reading means (R7) for reading registration data ("ab") indicated by the intra-group registration instruction information (b) in RGa) [Claim 1] is provided, and the next group designation information (NX) and the group are set as events according to the progress of the performance of one musical piece. Registration sequence data (RS) in which registration instruction information (b) is recorded, a plurality (n) of registration data groups (RG1 to RGn) each consisting of a plurality of registration data, and reading order of each registration data group A music data input step (S2 to S5, R3 to R6) for inputting music data (SD) including group order defining data (NG) that defines the data, and registration sequence data (RS) from the inputted music data (ST) ) Event (NX, b) sequentially read in accordance with the performance progress, and the event read in the sequence read step (R1, R2) is the next group designation information (NX) (R2 → YES), from among a plurality of registration data groups (RG1 to RGn) The group selection step (R6) for selecting a registration data group defined in the next order based on the order definition data (NG), and the event read in the sequence reading step (R1, R2) are the group registration instruction information ( b) (R2 → NO), the registration data (“ab”) indicated by the intra-group registration instruction information (b) in the currently selected registration data group (RGa). There is provided a music data processing program (claim 3) for causing a computer (electronic music apparatus) to execute a procedure comprising a registration data reading step (R7) to be read. Note that the parentheses indicate reference symbols, terms, and the like of the embodiment, and the same applies to the following.

  In the music data processing apparatus (electronic music apparatus) according to the present invention, the music data (SD) input by the music data input means (S2 to S5, R3 to R6) is encrypted. (S2-S5, R3-R6) decrypts the music data (SD) and stores it in the temporary storage area (2t) (S4, R5), and stores the decrypted music data (ST) in the temporary storage area (2t ) To the music data processing area (2p) (S5, R6). In this music data processing area (2p), only one registration data group (RGa) can be stored with respect to the registration data group. The data input means (S2 to S5, R3 to R6) further receives the next group designation information (NX) by the sequence reading means (R1, R2) ( 2 → YES), when the decrypted music data (ST) is stored in the temporary storage area (2t) (R3 → YES), the registration data group (R6) to be selected by the group selection means (R6) RGa) is read into the music data processing area (2p) (R6), and if the decrypted music data (ST) is not stored in the temporary storage area (2t) (R3 → NO), it is encrypted. The registration data group (RGa) is read into the music data processing area (2p) (R4 to R6) (claim 2).

  In the music data processing system according to the present invention, it is instructed to read out the registration data group in the next order and any registration data in each registration data group in one music data (song data SD). Registration sequence data (RS) for storing next group designation information (NX) and in-group registration instruction information (b) as events according to the progress of performance, and a plurality (n) of each including a plurality of registration data Registration data group (RG1 to RGn) and group order defining data (NG) defining the reading order of each registration data group are included. Then, the events of the resist sequence data (RS) are sequentially read according to the progress of the performance of the music (song), and if the read event is the next group designation information (NX), the next sequence order data (NG) is followed by the next. If the registration group (RGa) in the order is selected and the in-group resist instruction information (b) is selected, any of the in-group resist instruction information (b) is indicated in the currently selected registration group (RGa). The registration data (“ab”) is read out.

  Therefore, according to the present invention, a plurality of registration data groups can be associated with one piece of music data, and the performance can be advanced while automatically switching these registration data groups. Regarding the limitation on “finite number” in the prior art, the number of registration data in one registration data group is “finite number”, and the registration data in this group can be associated with the panel switch. In addition, by instructing the next registration data group with the next group designation information (NX), the “finite number” problem can be solved by switching the registration data associated with the panel switch for each group.

  In this music data processing system, the music data (SD) is encrypted in advance, and is decrypted and stored in the temporary storage area (2t) when the music data (SD) is used. The temporary storage area (2t) The music data (ST) decrypted from is read into the music data processing area (2p) and reproduction processing is performed. At the time of this reading, regarding the registration data group (RG1 to RGn), only one registration data group (RGa) can be stored in the music data processing area (2p). Further, when the registration data group (RGa) in the next order is designated by the next group designation information (NX), if the decoded music data (ST) is stored in the temporary storage area (2t), The registration data group (RGa) is read into the music data processing area (2p). If not stored, the encrypted music data (SD) is decrypted and read into the music data processing area (2p). Therefore, according to the present invention, even if the music data is encrypted and takes a long time to decrypt, the processing can be performed at a high speed as long as the decrypted data remains in the temporary storage area. it can.

[System Overview]
FIG. 1 is a block diagram showing the hardware configuration of a music data processing system according to an embodiment of the present invention. Typically, an electronic musical instrument is used for an electronic music apparatus (computer) serving as a main body of the music data processing system. However, an electronic musical instrument such as a personal computer (PC) having a performance operation unit and a musical tone signal generation unit is used. It is also possible to use a music data processing device having a music data processing function equivalent to the above. Such an electronic music apparatus includes a central processing unit (CPU) 1, a random access memory (RAM) 2, a read only memory (ROM) 3, an external storage device 4, a performance operation detection circuit 5, a setting operation detection circuit 6, a display. A circuit 7, a sound source circuit 8, an effect circuit 9, a MIDI interface (I / F) 10, a communication interface (I / F) 11, and the like are provided. These elements 1 to 11 are connected to each other via a bus 12.

  The CPU 1 executes various music information processing including song data processing using a clock by the timer 13 according to a predetermined control program. The RAM 2 is used as a storage area for temporarily holding various data necessary for these processes and using them for the processes. For example, during song data processing, the song data ST to be played can be temporarily stored in the temporary storage area 2t, and the song data SP used for the current performance is stored in the song data processing area 2p. Can be stored. In order to execute these processes, the ROM 3 stores various control programs and control data including a music data processing program in advance, and can also store original song data (music data) SD.

  The external storage device 4 is not only a built-in storage medium such as a hard disk (HD) but also a compact disk read only memory (CD-ROM), a flexible disk (FD), a magneto-optical (MO) disk, a digital multipurpose disk ( Various portable external recording media such as a small memory card such as a DVD, a smart media (registered trademark), and the like are included. An arbitrary external storage device (for example, HD) 4 stores various control programs and song data (sometimes referred to as “original song data”) SD used as original data for music data processing. Data can be used with this electronic music device.

  The performance operation detection circuit 5 functions as a performance operation unit together with a performance operation element 14 such as a keyboard, detects the performance operation contents of the performance operation element 14, and introduces actual performance data corresponding to this to the system main body. The setting operation detection circuit 6 functions as a panel setting unit together with the setting operation elements 15 such as key switches and mice, detects the setting operation contents of the setting operation elements 15, and introduces panel setting data corresponding thereto into the system main body. . Further, the display circuit 7 includes a display 16 such as an LCD for displaying various screens and various indicators, and controls the display / lighting contents according to instructions from the CPU 1 to provide display assistance for the operations of the respective operators 14 and 15. Do.

  The tone generator circuit 8 can generate a tone signal in accordance with actual performance data from the performance operator 14 and song data SP on the song data processing area 2p of the RAM 2. The effect circuit 9 having the effect applying DSP gives a predetermined effect to the tone signal, and functions as a tone signal generator together with the tone generator circuit 8. The sound system 17 following the effect circuit 9 includes a D / A converter, an amplifier, and a speaker, and generates a musical sound based on the musical sound signal to which the effect is given.

  Further, another MIDI music device 30 is connected to the MIDII / F 10, and MIDI performance data including song data can be exchanged between the electronic music apparatus and the other music device 30 and used in this system. it can. A communication network 40 such as the Internet or a local area network (LAN) is connected to the communication I / F 11, and a control program is downloaded from an external server computer 50 or the like, and the original song data SD is stored in the external storage device 4. It can be saved and used in this system.

[Structure of song data (music data)]
In a music data processing system according to an embodiment of the present invention, music data using song data including registration data group (also simply referred to as “registration data group”) and next registration group data for one piece of music (song). In accordance with the processing program, music data processing called “song data processing” is executed, and a large number of registration data can be easily switched to advance the performance. FIG. 2 shows a setting mode of song data information used in the music data processing system according to one embodiment of the present invention.

  The external storage device 4 stores a large number of song data (music data) SD called original song data, and a predetermined number of song data SD can be stored in the ROM 3 in advance. Each song data SD has a structure as illustrated in the left column of FIG. 2 and includes performance data PM, registration sequence data RS, a plurality (n) of registration data groups RG1 to RGn, next resist group data NG, and the like. It is composed of various information and, as indicated by hatching, is encrypted for copyright protection and is handled as one file.

  Here, any encryption key or decryption key of the song data SD may be used. As an example, a unique ID unique to the storage medium of the external storage device 4 storing the song data SD may be used as a key (or a part of the key), or an electronic music device (electronic musical instrument) that processes the song data SD Etc.) may be used as a key (or a part of the key).

  The performance data PM is so-called “automatic performance data”, in which the musical sound event information is sequentially arranged in accordance with the progress of performance of one musical piece. The registration sequence data RS is sequence data that is attached to the performance data PM and is used to indicate registration data that should be sequentially set along with the progress of the performance of the music by the performance data PM.

  In addition, a plurality (n) of registration data groups RG1 to RGn are recorded for one piece of performance data in the song data SD, and each of the registration data groups RG1 to RGn has a plurality of sets (for example, maximum 16 sets (each set is associated with a registration setting panel switch of the panel setting unit). The data types that can be stored in each set of registration data are typically various instrument panel settings (volume, timbre, effect, automatic accompaniment, etc.), but other data types are also available. It may be memorable.

  The song data SD further includes next resist group data NG that defines the use order of each registration data group. This next resist group data NG is registered in the next use order among the plurality of registration data groups RG1 to RGn each time the “next resist group” is designated (NX) by the resist sequence data RS. It has a function of reading (1 ≦ a ≦ n).

  When used in the system, the original song data SD encrypted as described above is decrypted with a predetermined encryption key or decryption key as indicated by a broken line in the column in FIG. ST is temporarily stored in the temporary storage area 2t of the RAM 2 as ST. When the song data SD is decrypted, each data or data group PM / RS, RG1, RG2,... RGn, NG constituting the decrypted song data ST becomes a separate file.

  The temporary storage area 2t is also used for development other than song data. If another data is developed, the previous data developed in the temporary storage area 2t is erased. That is, since the temporary storage area 2t is a finite area, when reproducing performance data, for example, accompaniment style data used for automatic accompaniment is expanded, and the song data ST stored before that is maintained. If this is not possible, the song data ST is deleted from the temporary storage area 2t.

  The decrypted data stored in the temporary storage area 2t is decrypted when the storage medium storing the song data is removed from the electronic music device in addition to the data deleted by decrypting other data. It may be deleted when a predetermined time elapses after the electronic music device is turned off, or when the electronic music device is turned off. By doing so, it is possible to reduce the possibility of the song data ST in the decrypted state being erroneously leaked.

  As shown in the right column of FIG. 2, the decrypted song data ST developed in the temporary storage area 2t is further read as the song data SP to be processed into the song data processing area 2p prepared in the RAM 2 for song data processing. Be turned. However, for the registration data groups RG1 to RGn, only one registration data group RGa used at that time can be stored in the song data processing area 2p. Each file stored in the song data processing area 2p is used for reproducing song data.

[Outline of resist sequence]
In the music data processing system according to one embodiment of the present invention, in the song data processing (music data processing), along with the progress of the performance of the music by the registration data group (hereinafter simply referred to as “registration data group”) and the next resist group data. A desired registration can be automatically set. FIG. 3 shows an example of a registration sequence in the music data processing system according to one embodiment of the present invention.

  Specifically, as illustrated in FIG. 3 (1), the registration sequence data RS is recorded along with the progress of music performance with the next designation data NX and the registration instruction data (registration number) b as registration sequence events. Data. Further, as illustrated in FIG. 3B, the next resist group data NG is data in which group instruction information a indicating a resist data group is recorded in accordance with the order of use, and this instruction information a uses a group number. For example, the first resist data group RG1 is designated by the group number “1”. With the group designation information (group number) a, the resist data groups to be used next can be ordered in any desired order with respect to the plurality of resist data groups RG1 to RGn.

  Here, the next designation data NX is data for sequentially designating “next” in the next resist group data NG. When the next designation data NX is detected from the resist sequence data RS during the song data processing, the next designation data NG is detected in the next resist group data NG according to the group designation information (group number) a corresponding to the next use order at the time of detection. A resist data group RGa to be used is set.

  The registration instruction data b is also referred to as registration instruction data or in-group registration instruction data. In the next registration data group RGa instructed by the next registration group data NG according to the designation of the next designation data NX, the registration instruction data b is predetermined. Registration data (hereinafter simply referred to as “registration data”) is sequentially designated, and a registration number indicating a set number of each registration data can be used as the designation information b. The resist data used in each resist data group can be instructed in any desired order by the resist instruction data (resist number) b. When the registration number b is detected from the registration sequence data RS during the song data processing, the registration data indicated by the registration number b is set in the next registration data group RGa.

  FIG. 3 (3) is a diagram for explaining an actual sequence when song data processing is performed according to the example of FIGS. 3 (1) and 3 (2). When performing using some song data, as shown in the lower left part of FIG. 3, the song data ST obtained by decrypting the encrypted original song data SD is held in the temporary storage area 2t of the RAM 2, and this song Of the data ST, the data files PM.RS, NG excluding the resist data groups RG1 to RGn are stored in the song data processing area 2p as the song data SP to be processed, and the song data processing is executed according to the resist sequence data RS.

  In this example of song data, at the performance progression timing t1 of the resist sequence data RS, the first resist designated by the group number a = 1 of the use order “1” of the next resist group data NG is specified by the first next designation data NX. A data group RG1 is designated. In accordance with this designation, the first registration data group RG1 is further stored from the temporary storage area 2t into the song data processing area 2p. At the next timing t2, the first set of resist data in the first resist data group RG1 is designated by the resist number b = 1.

  Hereinafter, the resist data is represented by “a−b” by the group number a and the resist number b. For example, the first set of the first resist data RG1 determined by the group number a = 1 and the resist number b = 1. The resist data is represented by “1-1”. Subsequently, at the timing t3, the second registration data “1-2” of the first registration data group RG1 is designated, and at the timing t4, the third registration data “1-3” is designated.

  At the subsequent timing t5, the third resist data group RG3 designated by the group number a = 3 in the next use order “2” in the next resist group data NG is designated by the second next designation data NX. Since the third resist data group RG3 is not in the song data processing area 2p, the first resist data group RG1 is erased, and instead, the data file of the third resist data group RG3 is transferred from the temporary storage area 2t to the song data processing area 2p. Is read.

  Similarly, at timings t6 and t7, the second and fourth resist data “3-2” and “3-4” in the third resist data group RG3 are designated by the resist numbers b = 2 and 4. . Further, at the timing t8, the second resist data group RG2 indicated by the group number a = 2 in the next use order “3” in the next resist group data NG is designated by the third next designation data NX, and the next At timing t9, the twelfth resist data “2-12” in the second resist data group RG2 is designated by the resist number b = 12.

  In this way, among the registration data groups RG1 to RGn of the song data ST decoded and stored in the temporary storage area 2t when the first song data is read, the next group is designated by the first next designation data NX. A resist data group (RG1) is used. Hereinafter, even when the next group is designated by the next designation data NX, if the decrypted song data ST remains in the temporary storage area 2t, the designated resist data groups (RG3, RG2) are sequentially used. be able to.

  However, after the song data SD is first decrypted, the next designated data is stored in a state where the first decrypted song data ST is discarded, for example, by using the temporary storage area 2t for decrypting other data. When the next group is designated by NX, the song data SD is decrypted again. For example, if the song data ST does not remain in the temporary storage area 2t at the timing t8, the original song data SD is decoded again and the decoded song is stored in the temporary storage area 2t as shown in the lower right (*) in FIG. The data file is stored again as data ST, and the data file of the second resist data group RG2 based on the third next designation data NX is stored in the song data processing area 2p. As shown in the figure, when the next song is designated by the second next designation data NX, if the decrypted song data ST is held in the temporary storage area 2t, such re-decoding processing is performed. Can be performed at high speed.

  The points of registration setting of this music data processing system will be described with reference to FIG. 3 as follows: Song data (music data) SD used in this system is performance data corresponding to one song (music). Along with RS, resist sequence data RS in which next designation data (next group designation information) NX and resist number (in-group resist designation information) b are recorded as events, and a plurality (n) of resist data each consisting of a plurality of resist data Groups RG1 to RGn, next resist group data (group order defining data) NG, etc., in which the reading order of each resist data group is defined by group number a are included. If the event read from the resist sequence data RS as the performance progresses is the next designated data NX, the resist data group RGa of the group number a defined in the next order is selected, and if it is the resist number b, the current selection is made. In the middle resist data group RGa, registration is set based on the resist data “ab” corresponding to the resist number b.

[Operation flow example of song data processing (music data processing)]
In the music data processing system according to one embodiment of the present invention, the song data processing (music data processing) as described above can be executed according to the music data processing program. FIG. 4 is a flowchart showing a procedure of song data processing according to one embodiment of the present invention, and FIG. 5 is a flowchart showing a procedure of registration sequence data reproduction processing operation included in song data processing.

  When this song data processing is started, the CPU 1 displays a music selection screen on the display 15 and in the first step S1, the user selects from a plurality of music (song name and music number) presented on the music selection screen. When an operation for selecting a desired song is performed, encrypted song data SD corresponding to the song (song) for which the selection operation has been performed is selected, and the temporary storage area 2t of the RAM 2 is transferred from the external storage device 4 or the ROM 3 to the RAM 2. Instruct to load In the next step S2, it is determined whether or not the decrypted song data ST is stored in the temporary storage area 2t for the song data SD instructed to be loaded.

  If the song data SD is not decrypted in the temporary storage area 2t (S2 → NO), the process proceeds to step S3. If other decrypted data is stored in the temporary storage area 2t, the decrypted data is stored. If no other decrypted data is stored, this step is passed. In the next step S4, the load-instructed song data SD (left column in FIG. 2) is decrypted, and the decrypted song data ST (column in FIG. 2) is stored in the temporary storage area 2t.

  When it is determined in step S2 that the song data SD has been decrypted in the temporary storage area 2t (S2 → YES) or after the decryption process in step S4, the process proceeds to step S5 to be stored in the temporary storage area 2t. The performance data, resist sequence data file PM / RS and next resist group data file NG in the decrypted song data ST are stored as song data SP (right column in FIG. 2) from the temporary storage area 2t of the RAM 2 as a song. The data is read into the data processing area 2p.

  Next, in accordance with the song data SP to be processed, the performance data PM is sequentially reproduced in step S6 (performance data reproduction processing: if not at the performance event timing, step S6 is passed through), and the resist sequence data RS is reproduced in step S7. (Registration sequence data reproduction process). In the subsequent step S8, it is determined whether or not end data indicating the end of the song data has been detected. While the end data is not detected (S8 → NO), the reproduction operation in steps S6 and S7 is repeated to detect the end data. When the song end is reached (S8 → YES), this song data processing is terminated.

  In FIG. 5 showing a specific procedure example of the resist sequence data reproduction process in step S7 of the song data process (FIG. 4), in the first step, the resist sequence data of the song data SP stored in the song data processing area 2p. For RS, it is determined whether or not it is currently the timing of the registration sequence event [next instruction data NX or registration instruction data (registration number) b]. If it is not the event timing (R1 → NO), this registration sequence is immediately performed. Through the data reproduction process, the process returns to step S8 of the song data process (FIG. 4).

  On the other hand, if it is the event timing (R1 → YES), it is determined in step R2 whether or not the registration sequence event at this timing is the next instruction data NX, thereby determining whether or not the next resist group is designated. Is designated (R2 → YES), the process proceeds to step R3, and it is further determined whether or not the song data SD that is currently instructed to be loaded has been decrypted in the temporary storage area 2t.

  If the song data obtained by decrypting the song data SD is not stored in the temporary storage area 2t (R3 → NO), the other decrypted data stored in the temporary storage area 2t is deleted in step R4. Then, if the decrypted data is not stored, the process proceeds to step R5. In step R5, the song data SD currently instructed to be loaded is decoded and stored in the temporary storage area 2t.

  When the decrypted song data ST is stored in the temporary storage area 2t (R3 → YES) or after the original song data SD is decrypted and stored in the temporary storage area 2t in step R5, the next resist group is stored in step R6. A resist data group RGa corresponding to the designation (designated by the group number a of the next resist group data NG based on the instruction of the next instruction data NX) is read from the temporary storage area 2t to the song data processing area 2p. Then, after reading the resist data group RGa, the process returns to step S8 of the song data processing (FIG. 4).

  On the other hand, when it is determined in step R2 that the resist sequence event is the resist number b (R2 → NO), the process proceeds to step R7, and the resist number b in the resist data group RGa currently stored in the song data processing area 2p. The registration setting is switched in accordance with the registration data (ab) specified in step (b). After registration switching, the process returns to step S8 of the song data processing (FIG. 4).

[Various Embodiments]
The preferred embodiment of the present invention has been described above with reference to the drawings. However, this is merely an example, and the present invention can be variously modified without departing from the spirit of the invention. For example, in the embodiment, the decrypted song data ST excluding the resist data groups RG1 to RGn is stored in the song data processing area 2p in the first decrypting step S5, but the resist data groups RG1 to RGn in the decrypted song data ST are stored. Of these, only one predetermined resist data group (for example, the first first resist data group RG1) is set, and decrypted into the temporary storage area 2t when the first next resist group is designated (NX) (R2 → YES). If completed (R3 → YES), step R6 may be passed. Alternatively, in step S5, the resist data group corresponding to the group number (a) in the use order “1” in the next resist group data NG read into the song data processing area 2p is read from the temporary storage area 2t, and the song data It may be stored in the processing area 2p.

1 is a hardware configuration block diagram of a music data processing system according to an embodiment of the present invention. FIG. It is a figure for demonstrating the setting aspect of the song data information used with the music data processing system by one Example of this invention. It is a figure for demonstrating the registration sequence in the music data processing system by one Example of this invention. It is a flowchart showing the procedure of the song data processing by one Example of this invention. It is a flowchart showing the procedure of the resist sequence data reproduction | regeneration processing by one Example of this invention.

Explanation of symbols

SD Original song data that was encrypted (original song data),
Decrypted song data stored in the temporary storage area 2t of the ST RAM 2;
Processing target song data stored in the song data processing area 2p of the SP RAM 2;
RS sequence data in which next designation data NX and in-group resist instruction data (registration number) b are recorded in accordance with the performance progress of the RS performance data PM;
RG1 to RGn; RGa resist (registration) data group (1 ≦ a ≦ n),
Next resist group data defining the order of use of the NG resist data group (group number a).

Claims (3)

Registration sequence data in which next group designation information and in-group registration instruction information are recorded as events following the performance of one piece of music, a plurality of registration data groups each consisting of a plurality of registration data, and each registration data group Music data input means for inputting music data including group order defining data defining the reading order;
Sequence reading means for sequentially reading out the events of the resist sequence data from the input music data as the performance progresses,
When the event read by the sequence reading means is the next group designation information, a registration data group defined in the next order by the group order defining data is selected from the plurality of registration data groups. Group selection means;
When the event read by the sequence reading means is the in-group registration instruction information, the registration data for reading out the registration data instructed by the in-group registration instruction information in the currently selected registration data group A music data processing apparatus comprising: a reading unit. The music data input by the music data input means is encrypted,
The music data input means decodes the music data and stores it in a temporary storage area, reads the decoded music data from the temporary storage area into the music data processing area,
In this music data processing area, only one registration data group can be stored with respect to the registration data group.
The music data input means is further configured to use the group selection means when the decoded music data is stored in the temporary storage area when the next group designation information is read by the sequence reading means. The registration data group to be selected is read into the music data processing area, and if the decrypted music data is not stored in the temporary storage area, the encrypted music data is decrypted and the registration is performed. 2. The music data processing apparatus according to claim 1, wherein the data group is read into a music data processing area. Registration sequence data in which next group designation information and in-group registration instruction information are recorded as events following the performance of one piece of music, a plurality of registration data groups each consisting of a plurality of registration data, and each registration data group A music data input step for inputting music data including group order defining data defining a reading order;
A sequence reading step for sequentially reading out the events of the resist sequence data from the input music data according to the performance progress;
When the event read in the sequence reading step is the next group designation information, a registration data group defined in the next order is selected from the plurality of registration data groups by the group order defining data. A group selection step;
When the event read in the sequence reading step is the in-group registration instruction information, the registration data for reading out the registration data indicated by the in-group registration instruction information in the currently selected registration data group A music data processing program for causing a computer to execute a procedure comprising a reading step.

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