JP3603750B2 - Tone generator - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a tone generating apparatus that generates a tone of a tone type based on other alternative tone color information when generating a tone of a designated tone type.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a tone generator having a tone generator for generating a tone of a tone type designated by tone color information, the tone generator is supplied with tone color information instructed from the outside, and is generated by the tone generator. The tone type of the musical tone is controlled.
Some of such tone generators have a wide variety of timbre types and some have only a small number of timbre types. By the way, if a tone generator that has only a small number of tone types is supplied with tone information that cannot be pronounced by itself, the tone cannot be pronounced with the designated tone type, but even though the tone is instructed, Since no tone generation is unnatural for a tone generator, when a tone type that cannot be pronounced is specified as described in Japanese Patent Publication No. 4-7519, the specified tone color is specified. It has been practiced to change the data to timbre data that can be pronounced on its own.
[0003]
[Problems to be solved by the invention]
The tone generation method of the tone generation means of the tone generation device includes a conventional FM synthesis method and a waveform memory reading method, as well as a so-called physical model method of generating a tone by calculating the physical behavior of an instrument. Has recently been proposed. As a musical tone generator of this physical model type, a wind instrument type is disclosed in JP-A-3-65999 and a piano type is disclosed in JP-A-3-58096. This physical model method is superior to the conventional sounding method in the range of change in tone color type and the like, and can generate high-quality musical sounds.
[0004]
Also, in the MIDI (Musical Instruments Digital Interface) standard which defines the exchange of signals between MIDI devices such as a musical tone generator having a MIDI function, the number of tone types is recently unified so that almost any manufacturer's system can be used. A tone arrangement that aims to be able to reproduce the same music has been proposed. The arrangement of the tone colors is based on a waveform memory sound source capable of preparing a large number of waveform sets relatively easily, and it is assumed that the tone colors are uniform in a certain range.
[0005]
However, in the above-described sound source of the physical model sounding method, when simulating a musical sound of an existing musical instrument, sampling is not performed as in the waveform memory method, but in a sound generation mode (stripping, bowing, lead, etc.) It is necessary to create a corresponding program, and is not good at preparing a wide range of timbre types.
Therefore, when a sound source of the waveform memory type and a sound source of the physical model type are combined, a high-quality musical tone is generated by generating a specific tone type by a physical model type and generating the other types by a waveform memory type. Will be able to do.
[0006]
When such a high-quality tone is generated by a single tone generator, a specific tone type may be changed in accordance with the settings of the player, but the tone data created by the proposed tone array may be changed. If the tone type of a conventional sound source is specified in spite of being equipped with a high-quality sound source, the specified conventional sound source generates a tone and sounds become. In order to avoid this, it is conceivable that the tone table is shared between the conventional tone generation system and the high-quality sound source, but since some waveform memories have already recorded waveforms, they are not used. This results in waste. Further, there is a disadvantage that the configuration of the table is complicated.
Also, as will be described later, even in the simulation of the same musical instrument, the conventional sound source system may be superior depending on the usage, and it is desirable to provide a tone color table for each musical tone generation system.
[0007]
Accordingly, the present invention provides a method for determining the presence of another alternative timbre information even if the tone of the accepted timbre information can be produced by one sound source means when it is determined that there is another alternative timbre information. It is an object of the present invention to provide a musical tone generating device in which a musical tone of a timbre type designated by (1) is generated by another sound source means.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, a musical sound generating device of the present invention generates a musical tone of a timbre type specified by timbre information and includes a plurality of tone generators capable of generating musical tones under different sounding conditions. In the receiving means for receiving the timbre information, and for the timbre information in one of the plurality of sound source means received by the receiving means, the other timbre information that can be replaced with the timbre information, First determining means for determining whether or not the sound source is in another sound source means of the plurality of sound source means; and the timbre information in the one sound source means received by the receiving means, Second determining means for determining whether or not replacement with another tone color information in the alternative sound source means is permitted, and the other sound source means replaceable by the first determining means If it is determined that there is other timbre information, and if the second determination means determines that substitution is permitted, the tone of the timbre information received by the reception means is Processing means for causing the other sound source means to generate a tone of a timbre type specified by the alternative sound color information, even if the sound source means can generate the alternative sound. Is set in advance for each tone color information, and by referring to this setting, the second determination means determines whether or not the substitution is permitted.
[0009]
According to another aspect of the present invention, there is provided a musical tone generating apparatus capable of generating a musical tone of a tone type specified by tone color information, and a plurality of tone generators capable of generating musical tones under different tone generation conditions. Receiving means for receiving the timbre information, and the timbre information in one of the plurality of sound source means received by the receiving means, wherein the timbre information can be replaced with the timbre information. First determining means for determining whether or not the timbre information is in another of the plurality of sound source means, and the timbre information in the one sound source means received by the receiving means, A second discriminating unit for discriminating whether or not replacement with another tone color information in the other sound source unit which can be replaced with the tone color information is performed; If it is determined that there is other timbre information in another sound source means, and if the second determination means determines that substitution is permitted, the timbre received by the reception means Processing means for causing the other sound source means to generate a tone of a tone type specified by the alternative sound color information, even when the musical tone of the information can be generated by the one sound source means; The user can set whether or not to permit pronunciation, and the second determination means determines whether or not substitution is permitted by referring to this setting.
[0011]
According to the present invention, when the timbre type is specified by the timbre information, if there is another timbre information that can be replaced, the tone of the timbre type specified by the timbre information is generated. ing. Therefore, when replacing with high-quality timbre information, higher-quality musical sounds can be produced.
In addition, even in the case where high-quality timbre information can be substituted, the substitution of the timbre information can be prohibited due to restrictions on the number of simultaneous sounds and the like. It is possible to substitute for the timbre information.
[0012]
Embodiment
FIG. 1 is a block diagram showing a configuration example of an embodiment of a tone generator according to the present invention.
In FIG. 1, reference numeral 1 denotes a microcomputer (CPU) for performing various controls of the tone generator by executing a program stored in a ROM 2; Read Only Memory), RAM (Random Access Memory) used as a working area used for execution of the program of the CPU 1, etc., and 4 sends out a MIDI message created inside the tone generator to the outside or from outside. A MIDI interface 5 for receiving a MIDI message or the like, 5 is a conventional waveform memory type sound source 1 having a waveform memory storing a plurality of musical tone waveforms and the like, and 6 is a musical tone generator which calculates a physical behavior of an instrument to generate a musical tone. Generated physical model type sound sources 2 and 7 are input A sound system which sets the mixing ratio and total volume of each tone signal generated by the tone generator 1 or 2 to be generated and converts the tone signal into an analog signal for sounding. Data address bus.
[0013]
In the tone generator having the above configuration, bank select data or program change data as timbre information is received from the outside via the MIDI interface 4, and the timbre type of the standard tone generator or the timbre type of the extended tone generator is designated. An outline of the operation of the musical sound generating device in such a case will be described with reference to FIG. The standard sound source corresponds to the conventional sound source 1 of the waveform memory system shown in FIG. 1, and the extended sound source corresponds to the high-quality physical model type sound source 2 shown in FIG.
First, when the timbre type of the standard sound source is specified by the timbre information, it is determined whether or not there is a timbre type specified as the extended sound source. Are performed separately. In other words, if there is a specified tone type in the extended sound source, it is further determined whether it can be changed or cannot be changed.If it can be changed, alternative sounding is performed with the extended sound source. Pronunciation is performed. If the extended sound source does not have any timbre type, normal sound generation is performed using the standard sound source.
Whether the change is possible or not is described later, but is determined by the method of the sound source and the timbre type.
[0014]
Further, when the tone type of the extended sound source is specified, it is determined whether or not the extended tone source has the tone type, and different processing is performed depending on whether the extended tone source has the designated tone type or not. Is That is, when the extended tone generator has a designated tone type, normal tone generation is performed by the extended tone generator.
If there is no tone type in the extended sound source, it is further determined whether or not there is a standard alternative tone type, and if there is a standard alternative tone type, the alternative tone is performed by the standard tone source, but there is no standard alternative tone type In this case, the instruction to change the timbre type is ignored, and the timbre type change is not performed.
[0015]
As described above, the tone generator of the present invention, when the tone type of the standard sound source is specified, when the tone type is present in the high-quality extended sound source, the tone type of the extended sound source is adopted as much as possible to produce the high-quality tone. When a tone type of an extended sound source is designated, and there is no tone type in the extended sound source, a musical tone is generated instead of a standard tone color type as much as possible.
Next, FIG. 3 shows an example of a tone color table of the tone generator of the present invention.
As shown in this figure, the timbre table is two-dimensionally mapped, and the horizontal axis indicates the musical instrument type, and the vertical axis indicates the variation timbres of the same musical instrument type.
[0016]
Addresses from 0 to 127 are given to the horizontal axis of the tone color table, and up to 128 types of musical instruments, for example, a grand piano (Grand Piano), a pipe organ (Pipe Organ), and an alto sax (Alt Sax.) Are registered. On the vertical axis of the tone color table, as a BANK00 group, the types of musical instruments provided in the waveform memory type sound source 1 and their variations, such as a grand piano (Grand Piano) and an upright piano (U. Piano). , Electric pianos (E. Piano), etc., can be registered in a maximum of 128 types. Further, as a BANK 60 group, the types of musical instruments provided in the sound source 2 of the physical model system, for example, a grand piano (Grand Piano) and its varieties A plurality of alternative tones are registered. Here, in BANK 60, it is shown that there is no variation timbre. For a physical model type sound source, it is necessary to create a program corresponding to the tone generation mode as described above, and a wide variety of timbre types are available. This is because they are not good at preparing.
[0017]
In order to specify a desired tone color type in the tone color table, any one of BANK00,..., BANK60,. (However, in the configuration shown in FIG. 1, since only two sound sources are used, only two banks, BANK00 and BANK60, are prepared.) The LSB of the second byte indicates the vertical axis of the selected BANK. One of the arranged tone groups is selected, and further, any one of a plurality of tone types corresponding to one address on the vertical axis selected by the program change data of 1 byte is selected. Thereby, one desired tone color type is selected. That is, it can be said that the tone color table shown in FIG. 3 is three-dimensionally mapped.
[0018]
FIG. 4 shows a change permission flag. When it is not possible to change the sound source, the change permission flag is set to “0”. Is "1". Since the change permission flag only needs to be set corresponding to the type of tone color, a maximum of 128 flags each corresponding to the type of tone color are set.
As shown in FIG. 4, the flags of the grand piano and the pipe organ are set to "0". This generally requires that a piano or an organ simultaneously produce a large number of musical tones when performing. In the physical model type sound source 2, if the number of simultaneous sounds is increased, the amount of hardware is extremely increased at the current speed of the arithmetic means such as a CPU and a DSP. Therefore, high-quality musical sounds can be generated, but cost performance is considered. This is because the number of simultaneous pronunciations is not increased.
Therefore, the change permission flag is set to "0" for the tone type of the piano or the organ. For, the change permission flag instructing the substitution of the sound source is set to “1”.
[0019]
A description will be given of a case where the tone type of the grand piano of the normal tone generator (sound source 1 of the waveform memory system) is specified as described above in the tone generator of the present invention having such a tone table and the change permission flag. In this case, although the extended sound source (sound source 2 of the physical model method) has a timbre type, since the change permission flag is set to “0”, the sound source is generated by the normal sound source. As a result, the number of simultaneous sounds can be sufficiently secured, so that the performance is not hindered.
In addition, when the timbre type of the alto saxophone of the normal sound source is designated, since the extended sound source has the timbre type and the change permission flag is set to “1”, the extended sound source performs alternative sounding. As a result, high-quality musical sounds can be produced.
[0020]
The operation of the tone generator of the present invention, which operates as described above, will be described in more detail with reference to the main flowchart shown in FIG.
In the main flowchart, when the power of the tone generator is turned on, the main flowchart is started, initialization of various registers is performed in step S10, scanning of MIDI data is performed in step S20, and a MIDI event is generated. Whether or not there is is detected in step S30. Then, when it is detected that there is no MIDI event, the process proceeds to step S160, and the processing of the other normal tone generator is performed. If it is detected in step S30 that there is a MIDI event, it is determined in step S40 whether or not the MIDI event is a timbre designation event. Is determined in step S50.
[0021]
If it is determined in step S40 that the event is not a tone specifying event, it is determined in step S130 whether or not the event is a sounding event. A sound generation process for generating sound is performed in step S140, and then the process proceeds to step S160. If it is determined that the event is not a sounding event, it is determined that the event is another event, and other event processing is performed in step S150, and then the process proceeds to step S160.
If it is determined in step S50 that the standard sound source is designated, it is determined in step S60 whether or not the extended sound source has a corresponding tone type, and it is determined that the extended sound source has a corresponding tone type. If it is determined that the change permission flag is "1", it is detected in step S70.
[0022]
If the change permission flag is detected as "1", the timbre number is changed to the timbre number for the extended sound source in step S80. Next, in accordance with the designated tone number, the change of the set tone color of the device is executed in step S120. As a result, preparations are made for generating the tone type of the extended sound source instead of the standard sound source.
If it is not determined in step S50 that the sound source is the standard sound source, it is determined in step S90 whether or not there is a tone type corresponding to the tone type specified as the extended tone source, and if it is determined that there is a corresponding tone type. Proceeds to step S120, and the set tone color of the device is changed according to the designated tone color number. As a result, the preparation for generating the tone type of the extended sound source is completed.
[0023]
If it is determined in step S90 that there is no tone type corresponding to the extended sound source, it is determined in step S100 whether or not there is a tone type corresponding to the tone type specified as the standard tone source. If it is determined that there is a timbre type, the timbre number is changed to a timbre number for a standard sound source in step S110. Next, the setting tone of the device is changed according to the tone number designated in step S120. As a result, preparations are made for generating the tone type of the standard sound source instead of the extended sound source.
If it is not determined in step S100 that there is a timbre type corresponding to the timbre type specified as the standard sound source, the process directly proceeds to step S160.
[0024]
Further, when it is determined in step S60 that there is no corresponding timbre type in the extended sound source, and when it is detected in step S70 that the change permission flag is not "1", the tone number specified in step S120 is used. Then, the setting tone of the device is changed. As a result, the preparation for generating the tone color type of the designated standard sound source is completed.
When the process of step S120 is completed, the process proceeds to step S160, where the normal process of the other tone generator is performed. When the process is completed, the process returns to step S20, and the processes of steps S20 to S160 are circulated and are constantly executed. Become so.
[0025]
As described above, since the main flowchart of the musical tone generating device is executed, it is understood that the timbre types are substituted as shown in FIG.
Although the change permission flag is set as shown in FIG. 4, the maker may set the change permission flag in accordance with the timbre type, or the user may set the change permission flag. In the case where the setting is performed by the user, the setting may be performed in the other processing in step S160 of the main flow.
In addition, the order of various determinations in the main flow may be freely changed regardless of the order described above.
[0026]
The change permission flag may be set not only for each musical instrument type but also for each tone type, and when there is a tone type corresponding to the extended sound source, all of them are replaced without judging the possibility of change. You may do it.
Furthermore, the standard sound source is not limited to the waveform memory system, but may be a sound source such as an FM synthesis system. The extended sound source is not limited to the physical model system, and may be a sound source capable of generating other high-quality musical sounds. Is possible.
Further, the present invention can be widely applied to a musical sound generating apparatus in which sound source systems having different conditions such as a calculation amount for sound generation, quality of musical sound, and number of simultaneous sounds are combined.
[0027]
【The invention's effect】
Since the present invention is configured as described above, when the timbre type is specified by the timbre information, if there is another timbre information that can be substituted, the tone of the timbre type specified by the timbre information is provided. Can be pronounced. Therefore, when replacing with high-quality tone color information, a higher-quality tone can be generated.
In addition, even in the case where high-quality timbre information can be substituted, the substitution of the timbre information can be prohibited due to restrictions on the number of simultaneous sounds and the like. It is possible to substitute for the timbre information.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a configuration example of an embodiment of a musical sound generation device according to the present invention.
FIG. 2 is a diagram showing a form of alternative timbre information when substituting timbre information in the tone generator of the present invention.
FIG. 3 is a diagram showing an example of a tone color table in the tone generator of the present invention.
FIG. 4 is a diagram showing an example of a change permission flag in the tone generator according to the present invention.
FIG. 5 is a diagram showing a main flowchart in the musical sound generating device of the present invention.
[Explanation of symbols]
1 CPU, 2 ROM, 3 RAM, 4 MIDI interface, 5 sound source 1, 6 sound source 2, 7 sound system, 8 data address bus

Claims (2)

A tone generator having a plurality of tone generators capable of generating a tone of a tone type designated by tone color information and generating tone under different sounding conditions,
Receiving means for receiving the timbre information;
With respect to the timbre information in one of the plurality of sound source means received by the receiving means, another timbre information which can be substituted for the timbre information is used as another timbre means of the plurality of sound source means. a first discriminating means for discriminating whether or not within,
It is determined whether or not it is permitted to substitute the timbre information in the one sound source means received by the receiving means with another timbre information in the other sound source means which can be substituted for the timbre information. Second determining means for performing
When the first discriminating means determines that there is other timbre information in the other sound source means which can be substituted, and when the second discriminating means determines that the substitution is permitted. Even if the tone of the timbre information received by the accepting unit can be generated by the one sound source unit, the tone of the timbre type specified by the other substitutable timbre information is output to the other tone source unit. Processing means for sounding in
Whether or not alternative sounding is permitted is preset for each tone color information, and the second determining means determines whether or not alternative sounding is permitted by referring to this setting. A musical sound generator. A tone generator having a plurality of tone generators capable of generating a tone of a tone type designated by tone color information and generating tone under different sounding conditions,
Receiving means for receiving the timbre information;
With respect to the timbre information in one of the plurality of sound source means received by the receiving means, another timbre information which can be substituted for the timbre information is used as another timbre means of the plurality of sound source means. First determining means for determining whether or not there is
It is determined whether or not it is permitted to substitute the timbre information in the one sound source means received by the receiving means with another timbre information in the other sound source means which can be substituted for the timbre information. Second determining means for performing
When the first discriminating means determines that there is other timbre information in the other sound source means which can be substituted, and when the second discriminating means determines that the substitution is permitted. Even if the tone of the timbre information received by the accepting unit can be generated by the one sound source unit, the tone of the timbre type specified by the other substitutable timbre information is output to the other tone source unit. Processing means for sounding in
The user can set whether or not to permit the alternative sounding, and the second determining means determines whether or not the alternative sounding is permitted by referring to the setting. A musical sound generator characterized by the following.

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