JP4240052B2 - Music signal generator - Google Patents

Description

  The present invention relates to a musical tone signal generating apparatus for designating a chord constituent sound by pressing a numeric key on an operation unit of a mobile phone.

Conventionally, in an electronic keyboard instrument, a chord is played by pressing keys of a plurality of chord constituent sounds constituting a chord.
However, it is difficult for a user to play chords in a device that does not have a keyboard, such as a mobile phone.
However, in an electronic keyboard instrument, it is known that a chord is designated by pressing the root of a chord (single finger) in an automatic accompaniment key range, and automatic accompaniment according to the designated chord is performed.
2. Description of the Related Art A cellular phone is known that assigns a scale sound to a numeric key and generates a corresponding pitch by operating the numeric key (see Patent Document 1).

Therefore, it is conceivable to suppress only the root of the chord even with the numeric keys of the mobile phone. However, in this case, all chord constituent sounds are pronounced simultaneously. If you are a beginner, you can do this, but once you get used to this performance, you want to be able to accompany the user using individual chord constituent sounds.
However, the chord may change during the performance of the song. Then, the chord root moves in response to the changed chord, so if you just specify the chord (key and chord type) in the score, the numeric keys that should be operated to generate the chord component sound There is a problem of not knowing.
JP 2001-197160 A

  The present invention has been made to solve the above-described problems, and provides a musical tone signal generating apparatus capable of generating chord constituent sounds according to chord designation with a simple operation of operating numeric keys. It is for the purpose.

In the invention according to claim 1, the present invention provides a plurality of numeric keys, a code designating unit, and a chord constituting sound corresponding to a code designated by the code designating unit. A chord component sound having a pitch frequency of 11 with reference to the root frequency of the chord component tone is assigned to a numeric key corresponding to the frequency of the pitch with reference to the root tone of the chord component tone. A chord constituent sound assigning means for assigning a chord constituent sound having a pitch of 13 with reference to the root note of the chord constituent sound to 6 of the numeric key, and one of the numeric keys to which the chord constituent sound is assigned. one when it is operated, and outputs the sound instruction data of the assigned chord member numeric key operated, and, when one of the numeric keys the chord member is not assigned, but is operated, sounding instruction A performance control unit does not output the over data, and has a sound source for generating a musical tone signal in response to sounding instruction data output from said performance control means.
Therefore, even when the chord designated by the chord designation means changes, the frequency of the pitch of the chord constituent sound assigned to the numeric key does not change, so that the chord constituent sound can be easily generated by operating the numeric key. be able to.

The chord constituent sound assigning means assigns the chord constituent sound to a numeric key having a numeric value that matches the frequency of the pitch based on the root tone of the chord constituent sound. That is, the root note of the chord is assigned in correspondence with “1”. Therefore, the chord constituent sounds assigned to the numeric keys can be easily understood.

Further, the chord constituent sound assigning means assigns the chord constituent sound having the frequency of 11 to the numeric key 4 and assigns the chord constituent sound having the frequency of 13 to the numeric key 6.
Accordingly, the chord constituent sounds having the pitches of 11 and 13 cannot be associated with the 0 to 9 numeric keys as they are. However, since the chord constituent sound obtained by turning this chord constituent sound is equivalent to 4 degrees and 6 degrees, and originally there was no chord constituent sound of 2 degrees and 6 degrees, the chord constituent sounds of degree 11 and degree 13 are They can be assigned to the numeric keys “2” and “6”, respectively.

In the invention according to claim 2, in tone signal generating apparatus according to claim 1, wherein among the numeric keys, the display and the code numeric key arrangement sound is assigned, is assigned the chord member is It has display means for displaying different numeric keys in different display modes.
Therefore, on the display means of the device, for example, on the screen of the display, or on the numeric key itself, the display of the numeric key to which the chord constituent sound is assigned and the display of the numeric key to which the chord non-constituent sound is assigned. By displaying the display modes differently, it becomes easy to identify the numeric keys to be operated to generate the chord constituent sound.

  According to the present invention, if there is a numeric key, even if the device does not have a keyboard or a large number of operators, the numeric key to which the chord constituent sound is assigned is operated according to the frequency of the pitch that does not change by the chord designation. It is possible to easily generate chord composing sounds with a simple operation. Even when the chord designation changes, the frequency of the pitch of the chord constituent sound assigned to the numeric keys does not change.

FIG. 1 is a functional block configuration diagram for explaining an embodiment of the present invention.
In the figure, reference numeral 1 denotes a code designation unit. A chord is specified by a chord name defined by a key (root tone) and a chord type.
2 is a numeric key. In a cellular phone, there are 0 to 9 keys as numeric keys. Among these, 1 to 9 keys are used.
Reference numeral 3 denotes a chord constituent sound assigning unit, and a chord constituent sound corresponding to the chord designated by the chord specifying portion 1 is a numeric key according to the frequency of the chord constituent sound (relative numerical information from the root note). Assign to 2. Even when the chord designation changes, the frequency of the pitch of the chord constituent sound assigned to the numeric keys does not change.

The chord component sound assigning unit 3 includes a shift unit 8 and a chord component sound table 9, and realizes its function using the basic chord component sound storage unit 10.
The basic chord constituent sound storage unit 10 stores a basic chord constituent sound table shown in FIG. It is a chord composition sound table when chord designation is basic chord C.
Corresponding to the chord name, the pitches (note numbers) of the chord constituent sounds are arranged according to the frequency of the pitch from the root note. Since the frequency of the pitch from the root note does not change even if the chord designation is changed, the arrangement and the chord designation do not change.
The types of codes listed are representative examples and some are missing.

1 to 9 are frequency values indicating the pitch of the chord component sound when the root note frequency is 1. In this embodiment, the chord component sound is assigned to the same number key 2 as the frequency. It is done.
In the case of a numeric keypad having only numeric keys 0 to 9, 11 degrees (11th) and 13 degrees (13th) included in the chord component sound are not assigned to the numeric keys 0 to 9 as they are.
However, it is convenient to assign 11 degrees (11th) to the numeric key “4” and 13 degrees (13th) to the numeric key “6”.

The 11th chord constituent sound turns into a 4th (4th) sound when turned, and the 4th (4th) sound is vacant (a non-constituting sound of the chord). When the chord constituent sound of 13th (13th) is turned, it becomes 6th (6th) sound and 6th (6th) sound is vacant (is a chord non-constituting sound). Therefore, there is no sense of incongruity in the code theory, which is preferable.
It is also possible to assign a 9th (9th) chord component sound to the numeric key “2”. Since there is also a numeric key “9”, the 9th (9th) chord component sound is produced by operating either the numeric key “2” or “9”.
As a result, the 9th, 11th, and 13th tension notes can also be expressed by the numbers 1 to 7, so that even a device with a small number of operation keys can play chord constituent sounds.

The shift unit 8 shifts the pitch (note number) stored in the basic chord component sound table storage unit 10 in accordance with the chord designated by the chord designation unit 1, and the chord component sound table of the designated chord is obtained. And stored in the chord component sound table storage unit 9. That is, the basic chord constituent sound table is shifted and used in accordance with the designated chord. The shift may be calculated, or the shift number table shown in FIG. 3B may be referred to.
The chord constituent sound table 9 corresponds to the number of the chord constituent sound corresponding to the number of times where the root of the chord is 1 degree (1st), as illustrated in FIGS. 3 (c) and 3 (d). The high (note number) is memorized.

Reference numeral 4 denotes a performance control unit which outputs sound generation instruction data for chord constituent sounds assigned to the operated numeric key 2. More specifically, when it is detected that the numeric key 2 has been operated (pressed), the pitch (note number) of the chord constituent sound assigned to the operated numeric key 2 from the chord constituent sound table 9. , And sound generation instruction data including pitch data is output to the sound source 5. This pitch data is a parameter for controlling the sound source and is not necessarily a note number.
The sound source 5 generates a musical sound signal in accordance with the sound generation instruction data output from the performance control unit 4 and causes the speaker 6 to generate sound through a sound system (not shown). The sound signal is silenced by outputting mute instruction data to the sound source 5 when the numeric key 2 is no longer operated (released). If the musical sound signal is a decaying sound such as a piano, there is no need for the mute instruction data.

In the code specifying unit 1 described above, the user may arbitrarily specify a code using an operator.
However, instead of this, the song data is read from the song data storage unit 1 storing the song data file including the chord designation data (code change data) as the song progresses, and the chord designation data (code When (change data) is detected, a code may be specified by the detected code specifying data.
The chord designation data (code change data) can be included in the music data file as a meta event of SMF (Standard MIDI File) which is one standard of the music data file.
The user can automatically play the melody part of the music data file by outputting the sound generation instruction data to the sound source 5 as it is.
On the other hand, by detecting chord designation data (chord change data) from the song data file and operating one or more of the numeric keys to which each of a plurality of chord constituent sounds according to the designated chord is assigned, Accompaniment according to the data code is possible.

FIG. 2 is a hardware configuration diagram of the cellular phone showing an example for realizing the embodiment of the present invention shown in FIG.
In the figure, 21 is a bus, 22 is a CPU (Central Processing Unit), 23 is a RAM (Random Access Memory), and 24 is a ROM (Read Only Memory). If at least part of the ROM 24 is a flash ROM, data can be written.
In accordance with a control program stored in the ROM 24, the CPU 22 controls the communication unit 27 and the voice processing unit 29 connected to the bus 21 using the RAM 23 as a main memory, and performs telephone system outgoing and incoming calls. 28 is an antenna, 30 is a transmitter (microphone), and 31 is a receiver (speaker).

The user operates the operation unit (including numeric keys) 25 to input a telephone number or make / receive a call while viewing the display unit 26. In addition, the user inputs instructions for browsing web pages via various internets, downloading music data, and executing application programs. Application programs can also be downloaded from a server on the network.
32 is a sound source, and 33 is a speaker. When there is an incoming call on the telephone, the sound source 32 generates a tone signal corresponding to predetermined melody performance data stored in the ROM 24 or RAM 23 and outputs it from the speaker 33.
The functions of the chord component sound assigning unit 3 and the performance control unit 4 in the present invention shown in FIG. 1 are realized by the CPU 22 executing the application program stored in the ROM 24 or the RAM 23, and a tone signal is generated by the sound source 32. The sound is output from the speaker 33.
The function of the sound source 32 may be realized by the CPU 22 executing a software sound source program.

FIG. 3 is a table for explaining the operation of the embodiment shown in FIG.
FIG. 3A is a table showing the stored contents of the basic chord constituent sound storage unit 10 of FIG.
As already described, the pitches (note numbers) of chords and chord constituent sounds are stored for a plurality of types of chords distinguished by chord names with C (note number 60) as the root note.
The chord name is represented by the root note name and chord type (chord type: chozo, chozo, zozo, zozo, seventh chord, six chord, etc.).
Here, the numbers arranged in each chord name row are the pitches (note numbers) of chord constituent sounds. Numbers 1 to 9 in the columns are frequency numbers representing the pitches of the chord constituent sounds based on the root note (the root note frequency is 1).

Referring to the example of the first chord name C (major triad, chord), 1 degree is C (note number 60), 3 degrees is E (note number 64), 5 degrees is G (note number 67) ).
In the embodiment of the present invention, the number key 2 is assigned so as to indicate the frequency of the pitch with reference to the root note by the number of the number key 2, so that the constituent sound of the chord can be specified very easily. be able to.

The basic chord constituent sound table 10 described above is a chord constituent sound table of chords having a C key (C is a root note). Therefore, it is necessary to obtain the chord constituent sound of the chord designated by the chord designation section 1.
Therefore, the shift unit 8 in FIG. 1 calculates the difference between the selected key (root sound) and the C key (C is the root sound) or obtains it using the shift number table shown in FIG. To do.
A description will be given by taking an actually specified code as an example.

For example, if the chord designation unit 1 designates a chord name Gm7 (short triad) in G-tone (G is the root note), first, in FIG. Is read.
Next, in FIG. 3B, the chord designation unit 1 refers to the value “7” of the “number of shifts” in the column in which the symbol G of the designated key (root sound) is written. The numbers in this column indicate the pitch difference between G (G key) and C (C key).
Accordingly, the pitch “60, −, 63, −, 67, −, 70, −, − of the chord constituent sound in the row of the chord name Cm7 (minor 7th) of C (C) in FIG. “7” is added to the note number “” to obtain a chord constituent sound table shown in FIG. 3C, and this is written into the chord constituent sound table 9 of FIG.

  When C suspended 4th (Csus) is selected by the code designating unit 1, the shift value is 0 in FIG. 3B, so that the “Suspended 4th ( Csus) ”, the note numbers“ 60, −, −, 65, 67, −, −, −, − ”in the row are written as they are into the chord composition sound table 9 of FIG.

FIG. 4 is an explanatory diagram of a display mode of the display unit in the embodiment of the present invention shown in FIG. In the figure, 41 is a mobile phone, 25 is an operation unit, 41 is an input key (numeric keys, * key, # key, etc.), 42 is a shift key, and 43 is a display (display). A display method for making it easier for the user to understand the numeric keys to be operated will be described.
In FIG. 4A, at least numeric keys among the input keys 41 are displayed on the screen of the display device 43.

The chord constituent sound assigning unit 3 knows the frequency to which the chord constituent sound is assigned and the frequency to which the chord constituent sound is not assigned.
Accordingly, the display of the input key (number key) 41 that matches the number of frequencies to which chord constituent sounds are assigned and the display of the input key (number key) 41 that matches the number of frequencies not assigned are displayed. Are displayed in different ways.
FIG. 4A shows the case where the code name Gm7 exemplified in FIG. 3C is designated.
For example, numeric keys “1”, “3”, “5”, “7” to which chord constituent sounds are assigned are colored yellow, and numeric keys “2”, “4”, “6”, “ Displays a display screen in which 8 and 9 are grayed out.

In FIG. 4 (b), the display of the button operator itself of the input key 41, the display of the operator of the input key (numeric key) 41 corresponding to the number of times to which the chord constituent sound is assigned, and the chord The display of the operator itself of the input key (numeric key) 41 that matches the number of frequencies to which no constituent sound is assigned is displayed in a different manner of display. For example, an LED or the like is built in the button operator itself so that it is turned on / off, or the display color is changed. In this case, the display device 43 can be used for display for other purposes.
FIG. 4B shows the case where the “code name Csus7” illustrated in FIG. 3D is specified. For example, the numeric keys “1”, “4”, “5” of the chord constituent sounds are shown. Turn on the light, and turn off the numeric keys for other non-configuration sounds.
Note that the tension note (9th, 11th, 13th), to which a special number key is assigned, may be displayed differently from other chord constituent sounds by changing the display color.

In the two examples described above, when the chord is changed (code change) in the chord designation unit 1, the chord composing sound is changed accordingly, so that the display mode is also changed.
Further, even if an input key (number key) 41 to which no chord constituent sound is assigned (note number is not stored), for example, the number key “2”, is operated, no musical tone signal is generated.
On the other hand, when an input key (number key) 41 to which a chord constituent sound is assigned is operated, a musical tone signal is generated at the pitch of the assigned chord constituent sound. For example, when the numeric key “1” is pressed with the chord designation “Gm7”, a sound generation instruction is given at the pitch of the note number “67”, and a mute instruction is given when the numeric key “1” is released.
Although not described in FIG. 1, when the right side (or left side) of the shift key 42 is pressed, the pitch of the chord constituent sound to be generated thereafter is set to 1 by the pitch assigned by the chord assignment unit 3 of the shift key 42. You may output the sound production | generation instruction | indication data which designated the pitch made octave up (or down) to the sound source 5. FIG.

  In the above description, the mobile phone 41 has been described as a specific example. However, the present invention can be realized not only in the mobile phone 41 but also in a personal computer, a PDA (Personal Digital Assistant), a game machine, a portable music player, etc., as long as it has numeric keys. Further, even if the electronic keyboard instrument has a numeric key for setting operation, the present invention can be applied using this numeric key.

It is a functional block block diagram for demonstrating one Embodiment of this invention. It is a hardware block diagram of a mobile telephone which shows an example for implement | achieving embodiment of this invention shown in FIG. It is a table for demonstrating operation | movement of embodiment shown in FIG. It is explanatory drawing of the display mode of the display part in one Embodiment of this invention shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Chord designation part, 2 ... Number key, 3 ... Chord constituent sound allocation part, 4 ... Performance control part, 5 ... Sound source, 10 ... Basic chord constituent sound table storage part

Claims (2)

Multiple numeric keys,
Code designation means;
Assigning a chord constituent sound corresponding to the chord designated by the chord designating means to a numeric key of a number that matches the frequency of the pitch based on the root tone of the chord constituent sound among the plurality of numeric keys; and The chord component sound having a pitch frequency of 11 based on the root tone of the chord component tone is assigned to 4 of the numeric key, and the chord component sound having a pitch frequency of 13 based on the root tone of the chord component sound is assigned. Chord component sound assigning means assigned to number key 6;
When one of the numeric keys to which the chord constituent sound is assigned is operated, the sound generation instruction data of the chord constituent sound assigned to the operated numeric key is output, and the number to which the chord constituent sound is not assigned When one of the keys is operated, performance control means that does not output sound generation instruction data ;
A sound source that generates a musical sound signal in accordance with the sound generation instruction data output from the performance control means;
A musical sound signal generator characterized by comprising: Among the numeric keys, there is a display means for displaying the numeric keys to which the chord constituent sounds are assigned and the numeric keys to which the chord constituent sounds are not assigned, with different display modes.
The musical tone signal generator according to claim 1.

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