JPH0812555B2 - Electronic musical instrument - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic musical instrument that synthesizes a musical sound by changing a waveform.

2. Description of the Related Art In recent years, digitization of electronic musical instruments has progressed, and musical instruments that read stored waveform information to obtain musical tones have been developed.

The above-described conventional electronic musical instrument will be described below with reference to the drawings.

FIG. 6 shows a conventional electronic musical instrument. In FIG. 6, 16 is a waveform table group, which is a set of tables storing waveform information corresponding to addresses. A read control unit 17 reads waveform information from the waveform table group 16 and outputs it as a musical tone. An address input device 18 inputs the address of the waveform information to be output to the waveform table. Reference numeral 19 is address information, which specifies the address of the waveform information to be output. Reference numeral 20 is waveform information, which is converted into a musical sound by the read control unit 17 and output. Reference numeral 21 denotes a sound generation start command, which causes the read control unit 17 to start outputting a musical sound. Reference numeral 22 is pitch information, which specifies the pitch of the musical sound synthesized by the read control unit 17. Reference numeral 23 is address input information that specifies an address in the waveform table 16. 24 is a tone output, and the waveform information 20 is a read control unit 17
It was converted to a musical sound by and output. 25 is the waveform table selection information, which is the waveform table group
This is information for selecting an arbitrary waveform table in 16. Seventh
The figure shows the waveform table group 16 in FIG. 25 is the first
2 is a waveform table of. 26 is a second waveform table. 27 is address information of each waveform table. Reference numeral 28 is waveform information, which is stored in each waveform table in correspondence with each address.

The operation of the electronic musical instrument configured as described above will be described below.

First, the waveform table selection information 25 is used to select a waveform table used for synthesizing a musical tone from the waveform table group 16. Here, the waveform table group 16 includes first and second waveform tables 25 and 26, which store waveform information indicating different timbre trends. 0 to individual waveform table
Addresses of 63 are assigned. As shown in FIG. 7, 0 stores a simple sine wave having a harmonic overtone structure, and 63 stores the waveform information having the most harmonic overtone structure in each waveform table. That is, it is arranged so that a round tone can be obtained at a small address and a bare tone can be obtained at a large address. Further, the waveform information in which the harmonic overtone structure is smoothly changed is arranged and stored so that the waveform information is smoothly connected when the address changes.

After the waveform table arranged as described above is selected, the pitch information 22 specifies the pitch at the time of the tone synthesis by the read control unit 17, and the tone generation start command 21 starts the tone synthesis. The operation after the start of tone synthesis is as follows. First, the address input device 18 transmits the address input information 23 to the read control unit 17. Next, the read control unit 17 gives address information 19 to the waveform table selected at the start of sounding of the waveform table group 16 to obtain corresponding waveform information 20. Next, the read control unit 17
Convert the waveform information 20 at the pitch specified in 22 into a musical sound,
Output as music output 24. When the tone output by one address input information is completed in this way, the read control unit 17 continuously obtains the next address input information and outputs the corresponding tone. As described above, the electronic musical instrument of FIG. 6 obtains a round musical tone, a bare musical tone, and a musical tone varying between them by inputting an address after selecting a waveform table having a different tone color tendency.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, with the above configuration, the obtained musical tones can be obtained only by the change in the selected waveform table, and various musical tones cannot be obtained. Moreover, if waveform information having different timbre tendencies is to be arranged in one waveform table, it is not possible to realize an arrangement in which changes in the overtone structure are smooth,
It had the drawback of not being able to obtain natural musical sounds.

The present invention provides an electronic musical instrument capable of easily synthesizing a smooth musical tone even with changes in waveform information having a plurality of different tone color tendencies. The present invention also provides an electronic musical instrument capable of selecting waveform information and synthesizing a musical tone with a high degree of freedom, which is not possible with conventional electronic musical instruments.

Means for Solving the Problems In order to achieve this object, an electronic musical instrument of the present invention has an input device for inputting a spatial position, an input storage device for sequentially storing input coordinate information, and a plurality of tone colors different from each other. The tendency is made to correspond to the coordinate axes of the coordinate information respectively, the waveform information corresponding to the coordinate position is arranged, the stored storage device and the coordinate information stored in the input storage device are read out, and the corresponding waveform information is pitched. It is composed of a control unit which outputs a musical sound according to the specified pitch information.

Operation With this configuration, the control unit inputs the coordinate information from the input device, reads the waveform information corresponding to the coordinates from the storage device, and converts the waveform information into a musical sound, thereby obtaining a musical sound output having a change according to the change of the input coordinate. is there.

Embodiment An embodiment of the main part of the configuration of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the main part of the configuration of the electronic musical instrument of the present invention. In FIG. 1, reference numeral 1 denotes an X, Y waveform table which is a storage device and stores waveform information arranged in a matrix by the X axis and the Y axis. A read control unit 2 reads the waveform information from the X, Y waveform table 1 and converts it into a musical sound and outputs it. An X, Y input device 3 detects the X-axis and Y-axis coordinates from a flat input surface and transmits them to the read control unit 2. Reference numeral 4 is transmitted X-axis coordinate information, and reference numeral 5 is Y-axis coordinate information. Reference numeral 6 is address information for specifying an address on the X, Y waveform table 1. 7 is waveform information, X, Y waveform table 1
Is read from. Reference numeral 8 is a sound generation start command, which commands the read control unit 2 to start sound generation. Reference numeral 9 is pitch information, which specifies the pitch at which the read control unit 2 synthesizes a musical sound. Ten
Is a tone output. FIG. 2 shows the X, Y waveform table 1 in FIG. In FIG. 2, 6 is address information. Waveform information 7 corresponds to each X and Y address. FIG. 3 shows the X, Y input device 3 in FIG. In FIG. 3, 4 is detected X-axis coordinate information, and 5 is Y-axis coordinate information. Reference numeral 11 is a coordinate input, which shows the trajectory of the input on the input device.

The operation of the electronic musical instrument configured as described above will be described below.

First, the X, Y waveform table 1 in FIG. 2 will be described. In the present embodiment, X, Y
As an example of arranging and memorizing the changes in the overtone structure in a smooth manner on the matrix of, a sawtooth wave is used as a basis, and the timbre tendency of a low-pass filter that sequentially removes harmonics An explanation will be given by taking an example of a change in the timbre tendency of resonance which gives resonance. In FIG. 2, there are two coordinate axes, the X coordinate is 0 to 63 in the horizontal direction, and the Y coordinate is 0 to 63 in the vertical direction. Here, the Y coordinate of each waveform information is the “tone effect” of the low-pass filter, and the X coordinate is the “tone effect” of resonance.
That is, in the Y coordinate, Y = 63 corresponds to the waveform information at the maximum cutoff frequency, and Y = 0 corresponds to the waveform information at the minimum cutoff frequency. In the X coordinate, X = 63 corresponds to the waveform information at the maximum resonance effect, and X = 0 corresponds to the waveform information at the minimum resonance effect. That is, as shown in FIG. 2, a sawtooth wave is shown at the coordinate position of X = 0, Y = 63, and a sine wave is shown at the coordinate position of X = 0, Y = 0. Also X = 62, Y =
Resonance, that is, a sawtooth wave having a resonance effect is shown at the 63 coordinate position. In this example, it is conceivable that the waveform information on the X, Y matrix can be arranged so that the change in the overtone structure becomes smooth, but this is only one example of this embodiment, and the waveform on the matrix The method of arranging information is not a limitation of the present invention. That is, to give another example, if the X coordinate is represented by a change in timbre tendency due to addition of other waveforms, for example, waveform information that maximizes addition of rectangular waves at X = 63, or X = If the waveform information that minimizes the addition at 0 is arranged,
A waveform table showing changes in timbre tendency different from the X, Y waveform table of this embodiment can be created. The operation of synthesizing a musical tone will be described below with reference to the X and Y waveform table of 1 in this embodiment as described above.

In FIG. 1, first, the pitch information 9 is given to the read control unit 2 to specify the pitch of the musical tone synthesis to be performed thereafter. Next, the tone generation start command 8 is given to the read control unit 2 to start the tone synthesis. First, the coordinate information detected by the X, Y input device 3, that is, the X-axis coordinate information 4, and Y
The axis coordinate information 5 is given to the read control unit 2. Then 2
One piece of coordinate information is collected as address information 6 and given to the X, Y waveform table 1, and waveform information 7 corresponding to the inputted coordinates is given to the read control unit 2. Next, the read control unit 2 converts the waveform information 7 into a musical sound and outputs it at the specified pitch. When the musical tone output of one waveform information is completed, the read control unit 2 continuously inputs the next coordinate information and outputs the waveform information corresponding to the next input coordinate as a musical tone. In this way, the waveform information 7 on the X, Y waveform table 1 corresponding to the changes in the X, Y coordinate information 4 and 5 given by the X, Y input device 3 after the start of sounding is continuously output as a musical tone output 10. You can get it.

As described above, in this embodiment of the present invention, it is possible to easily synthesize a variety of smooth musical tones by using the table composed of the changes in the waveform information of a plurality of different timbre tendencies. Also, the tone synthesis by the waveform table group of the conventional example can be realized by having those waveform tables on the X and Y waveform tables in the present embodiment.

In the present embodiment, when the read control unit 2 reads the waveform information 7, the read tone synthesis is performed collectively for the coordinate address, but the information of the waveform information for one coordinate address is sequentially performed according to the tone synthesis. It may be read, and the present invention does not limit the method of reading the waveform information of the read control unit and the method of synthesizing the musical tone. Also,
In the present embodiment, the tone output is a single tone output, but this may be a chord output and is not particularly limited in the present invention.
Various methods are conceivable for arranging the waveform information of the X, Y waveform table, as described in the operation of this embodiment, and the arranging method is free according to the use of the musical tone synthesis. Therefore, in the present invention, there is no particular limitation on the arrangement of the waveform information in the waveform table. Further, although the X and Y orthogonal coordinates are used for the coordinate input in the present embodiment, as shown in the claims of the present invention, any input device having a plurality of coordinates, that is, spatial positions may be used. There is no particular restriction on the coordinate system of. Further, although the waveform information in the waveform table is data for one waveform in the present embodiment, the size of the waveform information is not particularly limited. Further, the data format may be a parameter instead of the locus of the waveform, and the present invention does not particularly limit the data format in the waveform table.

Next, an embodiment in which the input storage device of the present invention is provided will be described with reference to the drawings.

FIG. 4 shows an electronic musical instrument according to this embodiment of the present invention. In FIG. 4, 1 is an X, Y waveform table,
The waveform information arranged in a matrix by the X axis and the Y axis is stored. A read control unit 2 reads the waveform information from the X, Y waveform table 1 and converts it into a musical sound and outputs it. 3 is X,
The Y input device detects the X-axis and Y-axis coordinates from the plane input surface and transmits them to the X, Y input storage device 12. Reference numeral 4 is transmitted X-axis coordinate information, and reference numeral 5 is Y-axis coordinate information. 6 is the first address information for specifying the address on the X, Y waveform table 1.
Waveform information 7 is read from the X, Y waveform table 1.
Reference numeral 8 denotes a sound generation start command, which commands the read control unit 2 to start sound generation. Reference numeral 9 is pitch information, which specifies the pitch when the read control unit 2 synthesizes a musical sound. 10 is a tone output. An X, Y input storage device 12 stores coordinate information sequentially input by the X, Y input device 3. An input storage command 13 instructs the X, Y input storage device 12 to store the coordinate information. 1
Reference numeral 4 is second address information that specifies an address on the X, Y input storage device 12. Reference numeral 15 is X, Y coordinate information, which is read from the X, Y input storage device 12. FIG. 5 shows the X, Y input storage device 12 in FIG. In FIG. 4, 14 is the second address information, and 15 is the X, Y coordinate information.

The operation of the electronic musical instrument of the present invention configured as described above will be described below. The description of the X, Y waveform table 1 and the X, Y input device 3 in FIG. 4 has been given in the first embodiment, and the details thereof will be omitted.

In FIG. 4, first, the input storage command 13 is given to the X, Y input storage device 12, and the X-axis and Y-axis coordinate information 4 and 5 from the X, Y input device 3 are sequentially stored. Figure 5 shows i = 0 to 9
The contents of the X, Y input storage device 12 in the state where the coordinate input of the X-axis and the Y-axis have been completed in 100 steps up to 9 are shown. X = 0 at Y = 0, Y = 0, X at i = 1 = 1, Y = 4, and at the last i = 99, X = 56, Y = 63. That is, this is a value obtained by sampling the locus of coordinate input by the X, Y input device 3 at the timing of the input storage command 13. X, Y
After the storage in the input storage device 12 is completed, first, the pitch information 9 is given to the read control unit 2 to specify the pitch of the musical tone synthesis to be performed thereafter. Next, the tone generation start command 8 is given to the read control unit 2 to start the tone synthesis. First, the read control unit 2 supplies the second address information 14 to the X, Y input storage device 12. Next, X, Y input storage device 12
From X to Y, the information of X = 0 and Y = 0 of i = 0 is read out as the X and Y coordinate information 15. Next, the read control unit 2 sets the X and Y coordinate information 1
5 is transmitted to the X, Y waveform table 1 as the first address information 6. Next, the waveform information 7 corresponding to the coordinate information transmitted from the X, Y waveform table 1 is given to the read control unit 2. Next, the read control unit 2 converts the waveform information 7 into a musical sound and outputs it at the specified pitch. When the output of the musical sound of one waveform information is completed, the read control unit 2 continuously outputs X, Y
Second address information 14 in the next step of the input storage device 12
Give to. After that, the coordinate information of the next step is read out in the same manner and the corresponding waveform information is output as a musical sound. In this way, the waveform information 7 is stored on the X, Y waveform table 1 corresponding to the trajectory of the coordinate input once stored in the X, Y input storage device 12.
Is continuously obtained as the musical sound output 10.

As described above, in the embodiment in which the input storage device of the present invention is provided, a desired musical tone can be easily synthesized using a table composed of changes in waveform information having different tone color tendencies, and re-synthesized by the input storage device. I was able to.

In the present embodiment, the read control unit 2 continuously moves to the operation of reading the next coordinate information when the musical tone synthesis corresponding to one coordinate information ends, but after reading the coordinate information of i = 0 twice. Various effects can be added by applying modulation to the reading of coordinate information, such as reading i = 1 once.
In the present invention, the speed at which the read control unit inputs coordinate information is not particularly limited. Further, in the present embodiment, the pitch at the time of synthesizing the musical tone is specified by the 9-pitch information before starting the sound generation, but various effects can be added even if the pitch is changed during the synthesizing of the musical tone. Is not fixed or variable during pronunciation.

Effects of the Invention As described above, according to the present invention, various musical tones can be easily synthesized by inputting changes in waveform information of a plurality of different tone color tendencies, and the practical effects thereof are great.

[Brief description of drawings]

1 is a block diagram of an electronic musical instrument in the first embodiment of the present invention, FIG. 2 is a schematic diagram of an X, Y waveform table in the first embodiment of the present invention, and FIG. 3 is a first diagram of the present invention. FIG. 4 is a schematic diagram of an X, Y input device in the embodiment of the present invention, FIG. 4 is a block diagram of an electronic musical instrument in the second embodiment of the present invention, and FIG. 5 is an X, Y input memory in the second embodiment of the present invention. FIG. 6 is a schematic diagram of the apparatus, FIG. 6 is a configuration diagram of an electronic musical instrument in a conventional example, and FIG. 7 is a schematic diagram of a waveform table group in the conventional example. 1 ... X, Y waveform table, 2 ... readout control section, 3 ...
... X, Y input device.

Claims (1)

[Claims] 1. An input device for inputting a spatial position, an input storage device for sequentially storing inputted coordinate information, and a plurality of different tone color tendencies are made to correspond respectively to the coordinate axes of the coordinate information and correspond to the coordinate position. An electronic device including a storage device in which waveform information is arranged and stored, and a control unit for reading coordinate information stored in the input storage device and outputting the corresponding waveform information as a musical tone according to pitch information for specifying a pitch Musical instrument.