JPS6226477B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a music performance device and a music information storage device that are capable of automatic performance.

[Background of the invention]

Conventional electronic musical instruments convert keyboard operations into sounds and output them through speakers. Therefore, unless it was recorded, it would end up being a temporary piece of music.

[Purpose of the invention]

The present invention has been made in order to eliminate the above-mentioned drawbacks and provide a music performance device and a music information storage device of higher value.

The present invention enables an operator to easily modify and change the written sound signal when storing the sound signal in a memory that can be randomly accessed, so that errors can be corrected and musical notes can be partially changed. The purpose of the present invention is to provide a music information storage device that can perform various functions.

[Summary of the invention]

The present invention is configured so that a sound signal to be modified or changed can be easily found in order to easily modify the sound signal written in the memory.

That is, the sound signals are sequentially written into a randomly accessible storage means, and based on the operation of the operator, an address is specified within the range of addresses where sound signals have already been written, and the above is performed based on the specified address position. A sound signal that has already been written is read by accessing the storage means, and the scale and note length corresponding to the read sound signal are taught to the operator, and the sound signal to be corrected recognized as a result of the teaching is The contents of the written address location of the storage means are corrected.

Since the present invention is configured as described above, in order to avoid the problem of losing track of which address position the sound signal was written in when writing the sound signal to the memory, the address and its position are stored in the memory. Whereas it was necessary to write a table on paper that corresponds to the sound signals, this method has the following effects.

That is, in the present invention, since the sound signal of the address position changed by the operator is read out and taught to the operator, the operator can easily recognize which music information should be modified while performing the operation. Music information can be easily modified without having to prepare a table recording the addresses and their storage information.

[Embodiments of the invention]

Hereinafter, the present invention will be explained in detail with reference to the drawings.
FIG. 1 is a block diagram showing one embodiment of the present invention. A signal 2 from a scale selection button 1 having a keyboard or an equivalent function, and a signal 4 from a switch 3 for switching and instructing tones such as violin, flute, piano, etc. are connected to the topmost path 5 in FIG. is connected to a sound generator 7 via a switch 6. This sound generator 7 includes a plurality of suitable oscillators, a timbre imparting circuit that modifies the output from these, and a gate circuit that selects the output.
This is an ordinary audio circuit for an electronic musical instrument, which further includes a mixer circuit for mixing the outputs thereof, and an output amplifier, and the output 8 is outputted to a speaker 9. The speaker 9 may be a small earphone type speaker depending on the case, or it may be selected by another switch not shown and used in combination. When the switch 6 currently maintains the state in which the path 5 is connected to the sound generator 7, the tone of the scale specified by the keyboard 1 and tone change switch 3 is played from the speaker 9, and the sound is played as a normal electronic musical instrument. can perform the following functions.

On the other hand, signal 2 indicating the scale and signal 4 indicating the timbre.
is an on-off type signal in which some of the lines are selected as ``1'' and the rest as ``0'', and can be stored as is or in the form of efficiently encoded information. . In the case of FIG. 1, signals 2 and 4 are led to a coder 10, and the output of the note length selection button 13 is led to a coder 12 via a switch 14. For example, coda 12 is a whole note, a half note, a quarter note, an eighth note...
A signal 4 indicating various note lengths represented by dot symbols, etc., is converted into, for example, 4-bit information corresponding to numerical values 0, 1, 2, 3, etc., and is stored as part of the write register 11. The coder 10 also outputs one octave of C, D, E, etc. signal 2 indicating the musical scale.
4-bit information indicating whether the note corresponds to one of 12 levels, and 2 bits indicating which octave of a predetermined 3-octave range this one octave belongs to.
The bit information is further converted into several bits of information indicating whether the signal 4 indicating the timbre corresponds to a violin, flute, piano, etc., and is supplied to different parts of the write register 11.

Each coded signal in the write register 11 is routed to a randomly accessible memory 15 (e.g. semiconductor memory) and is routed to an address register 16.
The data is stored at the address location of the memory 15 specified by . This storage is performed when an advance switch (abbreviated as an ADV switch) (not shown) in the manual switch group 17 is pressed. That is, when the ADV switch is pressed, a write circuit (not shown) stores the contents of the write register 11 at the address pointed to by the address register 16 at that time. At this time, the address control circuit 19 simultaneously increments its counter (not shown), and the incremented address is sent to the address register 16, whose contents are incremented by 1 and point to the next address. The contents of the address register 16 are returned to their initial values by the address control circuit 19 when a reset switch (abbreviated as RES switch) (not shown) in the manual switch group 17 is pressed. Therefore, first
Press the RES switch, then operate keyboard 1, tone selection switch 3, and note length selection button 13.
By repeatedly pressing the ADV switch, the contents of the musical score can be stored one by one in the memory 15 one after another. At this time, if you make a mistake, press the positive or negative address increment switch (not shown) in the manual switch group 17 to set only the address to the desired value, and then proceed as described above. It can be rewritten by performing an operation. At this time, the contents of address register 16 are preferably displayed by a lamp or other suitable means. Furthermore, the contents of the address specified by the address register 16 are read out to the read register 20, decoded by a decoder 21 (described later), and guided through the switch 6 to the sound generator 7 and speaker 9, so that the sound can be heard. is reproduced as As a result, each time the operator presses the address increment switch, the scale and note length of the updated address position are taught to the operator via the speaker, so the operator can now specify which address in memory. The user can easily recognize whether or not the pitch length and scale being taught should be corrected without being aware of whether the pitch is correct or not.

Although it is easy to partially modify the contents written in the memory 15 using the above-mentioned means, in order to insert a new sound signal etc. into a certain part or delete a certain part, for example, the memory contents must be shifted. There are two ways to do this, such as using a jump instruction on the memory contents.

For example, in a method that uses a jump instruction for memory contents, input signals from a jump key and a jump address designation key (not shown) are sent to the decoder 1.
2 is input to the memory 15 via the write register 11, and stored at the address specified by the address register 16 as the address specified by the address increment switch in the manual switch group 17. During performance, the jump address is read out to the read register 20, and when the decoder 21 decodes that it is an input signal from the jump key and the jump address designation key, the jump address decoded by the decoder 21 is set as information 22 to the address under the control of the address control circuit 19. This becomes the address contents of register 16, and jumps to the jump address. At this jump address position, there is also a manual switch group 1.
A sound signal is written by the address increment switch 7, and this sound signal is read out to the read register 20. Such control is becoming easier with current computer technology, and especially with advances in microcomputer technology, it can be realized at a reasonable cost.

On the other hand, we will discuss how to memorize it while playing it as a normal musical instrument. First, RES in manual switch group 17
Set the memory 15 to the initial state using the switch, select the tone using the tone changeover switch 3, and select the tone from the keyboard 1.
play. At this time, since the signal 2 from the keyboard 1 is guided to the state change detection circuit 23, the signal 24 is output every time the keyboard 1 is played and is guided to the timer 15. The timer 25 is a circuit mainly composed of an oscillator and a counter, and counts a certain number of pulses each time the signal 24 arrives, and measures the time that the state of the keyboard 1 continues. The output is led to the coder 12 as a tone length signal via a switch 14 which is switched and connected only during continuous storage. Based on this tone length signal, the coder 12 analyzes which one corresponds to, for example, a whole note, a half note, a quarter note, an eighth note, and so on.
For example, it is supplied as 4-bit information to a part of the write register 11 in correspondence with numerical values 0, 1, 2, 3, . . . . In addition, the output 2 of the state change detection circuit 23
4 is also led to the address control circuit 19, and instructs the memory 15 to store the sound signal and increment the counter in the address control circuit 19 each time the state of the keyboard 1 changes. This allows songs to be automatically stored in digital format as they are performed.

At this time, a repetition signal, a pause signal, a sharp signal, a flat signal, etc. are similarly coded via the coder 10 and stored in the memory 15 by another group of manual switches (not shown).

Initially, when the beginning of the song is specified by the RES switch of the manual switch group 17, the address control circuit 19 first reads the first sound signal from the memory 15 and reads it into the read register 20. Next, the decoder 21
is the interface information with the sound generator 7 and the address control circuit 19 by the signal from the read register 20. In other words, the sound generator 7 receives a scale tone signal and a pause signal via the switch 6. ,
Sharp/flat signals, etc. are output to the address control circuit 19, and tone length information, jump signals, jump addresses, repeat signals, etc. are output to the address control circuit 19. Here, the repetitive signal refers to the signal used in musical scores, such as "D.
This signal corresponds to "C." and means to return to the beginning of the song. The information output from the decoder 21 of the sound generator 7 is expressed as sound by the speaker 9,
On the other hand, the address of the tone length information outputted from the decoder 21 to the address control circuit 19 is sequentially updated every time the time corresponding to the tone length information elapses under the control of the address control circuit 19, and the address is updated in the read register 19.
Information is read out one after another.

Further, if the output information of the decoder 21 is a repetitive signal, the address control circuit 19 returns the address to the address position where the first sound signal of the song previously held by the address control circuit 19 is stored, and repeats the address. The song can be read from the beginning and played repeatedly, and if it is a pause signal, sharp/flat signal, etc., the output information controlled by the decoder 21 is given to the sound generator 7, so that the song can be read out from the beginning and played repeatedly. It is also possible to control the chromatic scale up and down, or convert from C major to D major.

The stored songs are not only output under the control of the continuous playback button of the manual switch group 17, but also outputted one note at a time using the sequential playback button of the manual switch group 17. That is, when the sequential reproduction button is pressed, the contents of the address pointed to by the address register 16 at that time are read out to the read register 20, and at the same time, the counter in the address control circuit 19 is incremented. The contents of the read register 20 are read by the decoder 21.
The signal is decoded by a switch 6, guided to a sound generator 7 and a speaker 9, and reproduced as sound.

Next, when you press the sequential playback button, the value of the counter in the address control circuit 19 will be changed to the address register 16.
, and the sound at the next address is played in the same manner as described above.

In this case, until the next time you press the successive playback button, the sound that was played when you pressed the successive playback button before continues, but the output 22 from the decoder 21 continues.
The address control circuit 19 may be provided with a mechanism that initializes the readout register 20 based on the tone length signal when a time corresponding to the tone length has elapsed, so that the tone corresponding to the tone length is reproduced.

Furthermore, if the output of the decoder 21 at this time is connected to an appropriate display device (not shown), it is possible to create a musical score of a piece of music that has been composed by oneself while viewing it.

The above invention not only can be realized as an electronic musical instrument that adds new value by attaching it to a conventional electronic musical instrument, but also can be realized as a small circuit by using microcomputer technology as mentioned above. It can be realized as a small, portable device like a type calculator, or as a pocket-type composing device with earphones. In that case, there is no need to select timbres, which tends to be expensive, and the sound generator section can therefore be realized with only a plurality of simple sine wave generators and an appropriate gate circuit.

Note that the memory 15 is a read-only memory (ROM).
By replacing it with , you can easily construct an electronic music box or the like. In this case, it is clear that the keyboard 1 and the like are unnecessary.

〔Effect of the invention〕

In the present invention, since the music information at the address position changed by the operator is read out and taught to the operator, the operator can easily recognize which music information should be modified while operating. This has the effect of allowing music information to be modified very easily.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the structure of an embodiment of the present invention.

Claims (1)

[Scope of Claims] 1. Means for outputting a sound signal specifying the scale and length of a sound to be generated; Randomly accessible storage means for storing the output sound signal; and Access to the storage means. means for holding the address; means for displaying the scale and note length corresponding to the sound signal stored in the storage means; It is characterized by comprising a means for rewriting an address held in the means, and a control means for controlling the storage means to access the storage means to read out the sound signal and output it to the display means based on the rewritten address. music information storage device. 2. The music information storage device according to claim 1, wherein the display means is means for generating a tone of a scale specified by the sound signal at the address position held in the holding means. 3. The music information according to claim 1, wherein the display means is means for visually displaying the scale and note length specified by the sound signal at the address position held in the holding means. Storage device.