JP3924969B2 - Music processing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a musical tone processing apparatus that gives various effects to an inputted musical tone.
[0002]
[Prior art]
As an effect device (effector) for applying various effects to a musical sound, a digital system using a DSP has recently been used. The DSP gives various effects to the input musical sound by executing the microprogram at high speed.
[0003]
Therefore, the DSP can be configured as a desired effector by storing various effect microprograms externally and reading them into the DSP program register as necessary. In addition, since a plurality of microprograms can be processed within the range of the number of steps that can be processed by the DSP, a plurality of effects can be processed within the range. Here, the number of steps that can be processed by the DSP is the number of steps that can be processed within the time of one DAC cycle, which is the processing cycle of the DSP.
[0004]
[Problems to be solved by the invention]
However, when a plurality of effects are designated, the number of microprogram steps may exceed the number of steps that can be processed by the DSP. In such a case, the DSP cannot process effects (microprograms) that exceed the number of steps that can be processed.
[0005]
In addition, in the case of song data used for an automatic performance device, it is not created individually considering which effect can be processed by the effector of each automatic performance device. May specify an effect that does not store a microprogram. Even in this case, the effect cannot be processed.
[0006]
The present invention provides a musical sound processing apparatus that applies an effect to a musical sound by a substitute effect when a microprogram of the designated effect is not stored, and when a plurality of designated effects exceed the processing capability, It is an object to provide a musical sound processing apparatus that simplifies processing and processes all effects.
[0007]
[Means for Solving the Problems]
The invention of claim 1 is a basic set table in which a plurality of cells whose arrangement is defined by an effect number and a bank are arranged in a matrix, and a plurality of effect processing procedures among a group of effect processing procedures as a basic set. Are classified into the same system effect, and a basic set table in which a plurality of effect processing procedures classified into the same system effect are arranged in the same effect number cell, and the same effect number and bank number as the basic set table. , One or a plurality of effect processing procedures in the extended set, which is an effect processing procedure group other than the basic set, are the same effect numbers as the respective effect processing procedures of the corresponding basic set, and an extended set table arranged in the same bank. And a part of the effect processing procedure group of the extended set and the effect processing procedure group of the basic set. Memory means for憶, by performing the effect process procedure, processing means for imparting an effect to the input musical tone, to the processing means, described in the basic set table or extended set table, Of the effect processing procedures , the effect number of the effect processing procedure to be executed, the designation means for designating the bank , and the designated effect processing procedure are the effect processing procedure of the basic set or the extension set stored in the storage means. if effect processing procedure instructs the processing unit to this effect processing procedure Ah lever set of extensions that are not stored in the storage means, by referring to the specified table, the effect processing procedure corresponding basic set of This was determined as a substitute for effect processing procedure if there, the same of the corresponding basic set effect processing procedure is no if basic set table To determine the effect processing procedure arranged in different banks in Fekutonanba as an alternative effect processing procedure, and a control unit for instructing the processing means in place of the effect processing procedure specifying means specifies an alternative effect processing procedure It is characterized by that.
[0008]
According to a second aspect of the present invention, a cell that is specified to be through, in which the processing means does not execute an effect processing procedure, or an off-designated cell that does not output a musical sound is arranged in a cell defined by any bank of each effect number in the basic set table. The control unit does not store the designated effect processing procedure in the storage unit, refers to the designated table, does not have a corresponding basic set effect processing procedure, and has the same effect in the basic set table. If there is no effect processing procedure assigned to a different bank with the same number, and the through designation or off designation is assigned to a cell in a different bank with the same effect number , the effect processing procedure is not executed or no musical sound is output. And instructing the processing means.
[0010]
The musical sound processing apparatus of the present invention stores a plurality of effect processing procedures in the storage means, and can assign a plurality of types of effects by designating one of the processing procedures to the processing means. The processing means is constituted by a DSP, for example. In this case, the effect processing means is a microprogram. The effect processing procedure that can be processed by the processing means, that is, the effect that the processing means can impart to the musical tone is limited depending on what kind of effect processing procedure the storage means stores.
[0011]
In the first aspect of the invention, when an effect processing procedure other than this is specified by the specifying means, this effect imparting process cannot be normally executed, but it is specified from the effect processing procedures stored in the storage means. An alternative effect processing procedure that replaces the one is determined, and the processing means executes the process of imparting the effect using this procedure. The effect processing procedure includes an effect processing procedure group called a basic set and other (additional set) effect processing procedures, and at least all effect processing procedures of the basic set are stored in the storage unit. When other effect processing procedures are specified in the table and the effect processing procedure is not stored, the effect processing procedure of the basic set to be used instead is stored as an alternative relationship, and the processing is not stored When an effect procedure is designated, an alternative effect processing procedure is determined based on this table. The alternative relationship may be determined based on the similarity of the output of the input musical sound.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of an automatic performance apparatus having an effector according to an embodiment of the present invention. The song data memory 2 stores song data which is data for automatic performance. The song data is so-called sequence data stored in a MIDI format or the like.
[0015]
The music data is composed of a plurality of event data for controlling the sound source 3 and the DSP 4 as an effector, and timing data for instructing the reading timing of each event data. The event data includes note (on / off) event data for instructing the tone generator 3 to generate or delete musical sound, tone generator setting data for setting a tone color for the tone generator 3, and effects for the DSP 4 at the beginning of the song. This includes effect setting data for setting. The effect setting data instructs the DSP 4 about the contents of the effect and sets the send level to the gate 3a which is the output stage of the sound source 3. The send level is a level of how much musical sound formed by the sound source 3 is input to this effector. The DSP 4 whose content of the effect is instructed by the effect setting data reads the micro program of the effect from the memory (micro program memory) 5 and sets it in the program register.
[0016]
The DSP 4 can execute a microprogram of about 256 steps within one DAC cycle, and a plurality of effectors 10 to 13 are configured by software by setting a plurality of microprograms so as to be within this step. can do. Each effector 10-13 is designated by separate effect setting data.
[0017]
The control unit 1 has a sequencer 1a, and this sequencer 1a performs automatic performance. At the start of automatic performance, the music data is first read sequentially from the music data memory 2. Setting data such as effect setting data and sound source setting data is written at the beginning of the song data, and these setting data are read out at the beginning of the automatic performance. The control unit 1 sets these functions by sending the read setting data to the DSP 4 and the sound source 3.
[0018]
In the song data, note event data for generating a musical tone is recorded following the setting data of the sound source 3 and the DSP 4. The control unit 1 reads out the note event data and inputs it to the sound source 3. The sound source 3 forms a musical sound based on the note event data. The formed musical sound is distributed and output to the plurality of effectors 10 to 13 by the gate 3a. This distribution depends on the send level set by the effect setting data. The effectors 10 to 13 give predetermined effects to the inputted musical sounds and then output them to the mixer 14. The mixer 14 mixes the input musical sound into a 2-channel (L / R channel) stereo signal and outputs it. The output musical sound is amplified by an amplifier and output to a speaker or the like.
[0019]
In FIG. 1, the number of effectors set by the DSP 4 is four, but the number is not limited to this. Further, the number of musical sounds (instrument timbres) input to one effector is not limited to one. Further, the output destination of one musical sound (one musical tone) is not limited to one effector, and one musical sound may be branched and input to a plurality of effectors.
[0020]
Here, as described in the effect table of FIGS. 2A to 2C, there are an extremely large number of types of effects, but the memory 5 does not store all these effects (microprograms thereof). . Since there are restrictions on storage capacity and frequently used effects, some of them are excluded from the memory 5. Since the effect group described in the table of bank M = 1 in FIG. 5A is a basic set, all these effects are stored in the memory 5. On the other hand, the effects described in the table of bank M = 2 in FIG. 5B and the table of bank M = 3 in FIG. 4C are additional sets, and effects added later belong to this set. . Therefore, only a part of this additional set is stored in the memory 5. Note that THRU (through) of bank L = 7 in the table of bank M = 1 means that the input musical sound is output as it is without any processing, and OFF of L = 8 is input. This means that the generated musical sound is not output.
[0021]
The effect tables (FIGS. 2A to 2C) are stored in the memory 1b of the control unit 1, and the tables of banks M = 1, M = 2, and M = 3 correspond to overlap each other. is doing. That is, cells having the same effect number No and the same bank L correspond to each other vertically. In the effect table, a cell corresponding to an effect whose microprogram is stored in the memory 5 is written with an address of the memory 5 storing the microprogram. In addition, the effect setting data of the music data designates an effect by designating an effect table cell. Therefore, if an effect that is registered in the effect table system but is not stored in the memory 5 is specified, a blank cell is specified.
[0022]
When an effect that is not stored in the memory 5 is designated by song data (effect setting data), the control unit 1 determines an alternative effect by the following method and instructs the DSP 4 for this.
[0023]
The effect of bank M = 1 is a basic set, and these microprograms are all stored in the memory 5. Therefore, the effect that cannot be processed by this apparatus is designated when the effect of the table of the bank M = 2 or M = 3 is designated. When an effect that is not stored in the memory 5 is designated, an effect of a cell in which the designated cell, the effect number No., and the bank L are the same and M = 1 is searched. If an effect is registered in this cell, that effect is determined as an alternative effect. If this effect (No, L is the same and M = 1) does not exist, the right neighbor (L ← L + 1) of the area is searched. This search on the right is repeated until an effect exists. The effect found by this search is determined as an alternative effect.
[0024]
For example, if a cell (effect DED) of M = 3, No = 1, L = 4 is designated by the music data and is not stored in the memory 5, a cell of M = 1, No = 1, L = 4 is selected. Search for. This cell stores an effect ROOM2, which is designated as an alternative effect. If a cell (effect PINGON) with M = 3, No = 5, and L = 3 is designated by the song data and is not stored in the memory 5, M = 1, No = 5, and L = 3 are searched. . Since nothing is stored in this cell, the right adjacent cell M = 1, No = 5, L = 4 is searched. This cell stores an effect KARAOKE, which is designated as an alternative effect.
[0025]
In this way, the same effect number No. series stores the same system effects (delay effect, phase shift effect, etc.), and the ones that overlap vertically are similar in output and can be substituted. Things are remembered.
[0026]
By this processing, even if an effect that does not store a microprogram is specified, an alternative effect that can obtain almost the same output instead of the effect is specified, and a musical sound is processed by this alternative effect.
[0027]
In addition, as described above, the number of steps that 4 can process in one DAC cycle is limited, but some music data requires many effects. In such a case, all effects are processed as usual. However, the processing may not be completed within one DAC cycle.
[0028]
Therefore, in this automatic performance device, for each effect, the memory 5 stores two types: a full-size microprogram that processes the effect as usual and a small-size program that simply processes the effect with fewer steps than this. did.
[0029]
The small-size microprogram is a simplified version of the full-size microprogram. However, in the case of a reverberation-type effect such as reverb, for example, this reduces the number of taps extracted from the FIR filter and added and synthesized. The number of processing steps is reduced by such changes.
[0030]
In this embodiment, the full size micro program and the small size micro program are stored for all effects, but the small size micro program may not be stored for all effects. For example, it is possible to cope with storing only effects with a large number of processing steps, storing only effects with low priority, and not storing effects such as echoes with high priority at all times.
[0031]
If multiple effects are specified by the song data and all of them are processed normally (with a full-size microprogram) and the processing does not fit within one DAC cycle, the control unit 1 performs the following processing to process within one DAC cycle. To fit.
[0032]
First, the type of musical sound (part) that is input to each effect, the send level of each part that is input to each effect, the settings by song data such as the parameters of each effect, and the predetermined priority of each effect Prioritize each specified effect in consideration of the above. For example, the settings based on song data indicate that effects with more input parts have higher priority, effects with higher send levels have higher priority, parameters with higher output level have higher priority, delay time, etc. The priority is determined by a rule such that the higher the degree of the effect, the higher the priority. Predetermined priority of each effect is stored in the memory of the control unit 1 as a priority table, and effects such as echoes that are frequently used in general purpose are given a higher priority. Priority is set.
[0033]
After assigning priorities to multiple specified effects, the full-size microprogram was replaced with the small-size microprogram in order from the low-priority effect, so that the total number of steps was within one DAC cycle of DSP4. Judging. If the DSP 4 can fit within one DAC cycle, the replacement is terminated at that point, and an effect setting instruction is sent to the DSP 4 by a combination of the full size program and the small size program at that time.
[0034]
If all the replaceable effects are replaced with small-sized microprograms and the total number of steps does not fit in one DAC cycle, the effect processing is canceled in order from the lowest priority effect, and only volume control is performed. Switch. Volume control values for each effect are stored in the memory of the control unit 1 as a volume substitution table. When the total number of steps comes within one DAC cycle of the DSP 4, the replacement is completed, and the combination of microprograms (including volume control) at that time is input to the DSP 4 to set effects.
[0035]
FIG. 3 is a flowchart showing the operation of the automatic performance device at the start of the music. In this operation, after all the effect setting data written at the beginning of the music data is read out, the setting processing is performed collectively.
[0036]
In the automatic performance process, song data (event data) is read sequentially from the beginning (s1). If the read event data is effect setting data, the processing returns to s1 after executing the processing of s3 to s6. In the case of other setting data such as sound source setting data, the corresponding process (s8) is executed and then the process returns to s1. When the note event data is read out for the first time, the automatic performance is paused (s9), the processing of s10 to s15 is executed, and then the automatic performance based on the note event data is started (s16).
[0037]
When the effect setting data is read, the effect table is searched to determine whether the effect designated by the effect setting data is stored in the memory 5 (s3). If this effect (microprogram) is stored in the memory 5, this effect is registered in the list (s6), and the process returns to s1. If this effect is not stored in the memory 5, an alternative effect is determined by the above method (s5), this effect is registered in the list (s6), and the process returns to s1.
[0038]
On the other hand, note event data is read for the first time, and after the automatic performance operation is paused (s9), the following operations are executed. First, the effects registered in the list are sorted in priority order (s10). This priority order is determined by the rules described above. Then, the number of steps of all effect microprograms is summed, and it is determined whether or not the number of steps is within one DAC cycle of the DSP 4 (s11). If it is within one DAC cycle, the DSP 4 is instructed to read these microprograms from the memory 5 (s15), and the microprograms are set in the DSP4. Thereafter, the pause is canceled and the performance of the song is started (s16).
[0039]
On the other hand, if the total number of steps of the specified effect does not fit within one DSP cycle of DSP 4 (s11), the program is changed to the small size in order from the effect with the lowest priority (s12). It is determined whether the number falls within one DAC cycle (s13). When the total number of steps is within one DAC cycle, the program combination is instructed to the DSP 4 (s15).
[0040]
If all the changeable effects are changed to the small size program and the total number of steps exceeds 1 DAC cycle, the effects are canceled in order from the lowest priority and switched to only volume control (s14). When the number of steps of all effects falls within one DAC cycle of DSP 4, the program combination is instructed to DSP 4 (s15).
[0041]
As a result, even if any effect is set in plural, the DSP 4 can process it.
[0042]
In the above embodiment, all effect setting data is read out and then set in the DSP 4 collectively. However, every time the effect setting data is read out, the effect (or alternative effect) is set in the DSP 4 in real time. It may be. In this case, even if a full-size microprogram is once set, processing such as switching to a small-size microprogram is performed thereafter.
[0043]
An example of this is shown in FIG. In this example, four types of effects of reverb (REV), chorus (CHO), distortion (DIST), and equalizer (Eq) are set in order, and the priority order is DIST>REV>CHO> Eq.
When the reverb effect setting data is read, the microprogram register of the DSP 4 (corresponding to the number of steps that can be processed in one DAC cycle) is empty, so a reverb full-size microprogram is set.
[0044]
When the chorus effect setting data was read, setting this full-size microprogram in the microprogram register filled the steps.
[0045]
After that, when the distortion effect setting data with the highest priority is read out, the chorus microprogram is changed to the small size (eco size), but this is how to set the distortion microprogram (full size). Since there is not enough, the reverb microprogram is also changed to a small size. After that, set the distortion microprogram.
[0046]
Furthermore, when the equalizer effect setting data is read, the distortion microprogram is changed to the small size to set it, but there are not enough empty steps to set the equalizer microprogram (small size). Therefore, the setting of the equalizer is canceled and only the volume control (× 1) processing is set.
[0047]
【The invention's effect】
According to the present invention, even when the designated effect processing procedure (effect) is not stored, the effect can be imparted to the musical sound using the alternative effect processing procedure determined based on the alternative relationship, and stored. Even if an effect processing procedure that has not been specified is specified, processing is not disabled.
[Brief description of the drawings]
FIG. 1 is a block diagram of an automatic performance apparatus according to an embodiment of the present invention. FIG. 2 is a diagram showing an effect table set in a control unit of the automatic performance apparatus. FIG. 4 is a diagram for explaining the procedure of real-time processing of the automatic performance device.
DESCRIPTION OF SYMBOLS 1 ... Control part, 1a ... Sequencer, 1b ... Effect table (memory), 2 ... Music data memory, 3 ... Sound source, 3a ... Gate, 4 ... DSP, 5 ... (microprogram) memory, 10-13 ... Effector, 14 ... Mixer

Claims (2)

A basic set table in which a plurality of cells whose arrangement is regulated by effect number and bank are arranged in a matrix, and a plurality of effect processing procedures in the group of effect processing procedures that constitute the basic set are classified into the same system effect. And a basic set table in which a plurality of effect processing procedures classified into the same system effect are arranged in a cell of the same effect number, and the same effect number and bank number as the basic set table. One or a plurality of effect processing procedures in the extended set which is a procedure group, the same effect number as each corresponding effect processing procedure of the basic set, and an extension set table arranged in the same bank , a designation table comprising:
Storage means for storing all of the effect processing procedure group of the basic set and a part of the effect processing procedure group of the extended set;
Processing means for applying an effect to the input musical sound by executing the effect processing procedure;
A designating means for designating an effect number and bank of an effect processing procedure to be executed among the effect processing procedures described in the basic set table or the extended set table for the processing means;
If the designated effect processing procedure is a basic set effect processing procedure or an extended set effect processing procedure stored in the storage means, this is instructed to the processing means and is not stored in the storage means effect processing steps Oh lever of extension set, by referring to the specified table, it determines this if there is an effect processing procedure corresponding basic set as a substitute for effect processing procedure, the effect processing procedure corresponding basic set of If not, the effect processing procedure arranged in a different bank with the same effect number in the basic set table is determined as an alternative effect processing procedure, and the alternative effect processing procedure is replaced with the effect processing procedure designated by the designating means as the processing means. A control unit for instructing;
A musical sound processing apparatus equipped with. Through the cell specified by any bank of each effect number of the basic set table, the processing means does not execute the effect processing procedure, or the off-specified cell that does not output a musical sound is arranged,
The control unit does not store the designated effect processing procedure in the storage means, refers to the designated table, has no corresponding basic set effect processing procedure, and uses the same effect number in the basic set table. If there is no effect processing procedure arranged in a different bank and the through designation or off designation is arranged in a cell of a different bank with the same effect number , the effect processing procedure is not executed or a musical sound is not output. The musical tone processing apparatus according to claim 1, wherein the musical sound processing apparatus instructs the processing means.

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