JPH01213698A - Automatic playing device for musical instrument - Google Patents

Abstract

PURPOSE:To make it possible to immediately convert read music information into automatic playing music information and to attain automatic playing by writing the read music information by codes identified by respective colors on a sheet based on a fixed conversion system. CONSTITUTION:A conversion processing part 43 for converting music information into an instrument play driving signal is constituted of an interface 45 for inputting a music information signal transmitted by an optical sensor 16, a shift register circuit 46, a CPU 47, a clock pulse generator 48, and an output interface 49. The clock pulse generator 48 holds the reading speed of a reading arm at a fixed value, controls the operation of a reading mechanism 5 for reading out and line-feeding data on a musical score, holds the conversion/ operation processing speeds of respective parts of the conversion processing part 43 for converting a music information signal converted into an electric signal appropriate for the conversion processing by the input interface 45 at a fixed value and synchronizing the speeds. Consequently, read music information can be immediately converted into automatic playing music information and automatic playing can be attained.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an automatic performance device that performs automatic performance using conventional musical instruments. Even if you are a professional, you can easily convert the original score into a score for automatic performance using codes, and you can easily convert the desired composition and arrangement based on the original score into a score for automatic performance using codes. The present invention relates to an automatic performance device that allows users to enjoy automatic performance of musical instruments.

[Conventional technology]

Conventionally, automatic performance devices using pianos and the like are generally known to record music information onto a paper tape or the like and play the music. Specialized technology is required to record the above-mentioned music information onto the tape as a reading drive signal for the automatic performance device, and it is impossible for ordinary users of the automatic performance device to freely compose or arrange music. , which only automatically played songs that were designated for automatic performance.

Therefore, recently, floppy disks, memory ICs
A technique has been proposed that generates a performance drive signal using a storage device using a storage device, such as a storage device, to automatically perform the performance.However, although this technology can memorize the performance and reproduce the instrument performance on the spot, it is not generally known. In order to convert a musical score that has already been written into a drive signal for automatic performance, the performer must play the instrument to convert it into a drive signal for automatic performance. It had the disadvantage that it was not possible to perform automatic performances such as.

[Problems to be solved by the present invention]

In view of the above-mentioned circumstances, the present invention was devised to eliminate the conventional drawbacks, and its purpose is to:
As long as a person can understand musical notation, even a person without the ability to play a musical instrument can use music information necessary for automatically playing a musical instrument, which is configured to be coded in different colors and rewritten based on a certain conversion method. The present invention aims to provide an automatic performance device that can immediately convert music information into drive signals for automatic performance, and that can perform automatic performance with a high degree of freedom and fully satisfy music lovers. be.

[Means for solving problems]

In order to solve the above problems, the technical means adopted by this proposal are: a reading mechanism that reads the musical information expressed on the musical score; a conversion processing section that converts the musical information into a driving signal for the musical instrument; It consists of a performance mechanism that plays a musical instrument in response to a performance drive signal, and is characterized in that the music information read by the reading mechanism is coded and coded on the sheet according to a certain conversion method. .

[Action of the invention]

Therefore, according to the present invention, since the music information read by the reading mechanism of the automatic performance device is written on the sheet with color-coded codes based on a certain conversion method, the music information for automatic performance is It is not a swindle that can be immediately converted into information, and allows people to automatically play their own compositions according to their personal preferences, even if they do not have the ability to play a musical instrument.
You can enjoy your own songs played automatically by musical instruments.

〔Example〕

An example in which the configuration of the present invention is applied to a marimba will be described in detail.

FIG. 1 is an overall perspective view of the automatic performance device 1, which includes a marimba 2 as a musical instrument, a music stand 3 disposed on the - side of the marimba 2, and a music stand 3. A music score transfer mechanism 4 and a reading mechanism 5 arranged at the rear and upper part of 3.
, an instrument playing mechanism 6 and a transport mechanism 7 arranged above and behind the marimba 2, and on the music stand 3,
Musical score 8 is placed.

As shown in FIG. 2, the musical score transfer mechanism 4 includes a column 11 formed in a long movement groove 10 formed in the base 9 so as to be vertically expandable and contractible in the longitudinal direction of the base 9 by an elevating mechanism (not shown). A transfer arm 13.1 is slidably installed and fitted, and is provided with a suction cup 12.12 at the upper end of the support column 11.
3 is provided protrudingly, and a reading mechanism 5 configured as follows is fixedly provided. That is, as shown in FIG. 3(a), the reading mechanism 5 includes a reading arm 15 formed on a movable table 14 so as to be horizontally retractable, and an optical sensor provided at the tip thereof and having a detection surface facing downward. 16
It is composed of. The reading arm 15 is moved in and out by installing a reading motor 19 equipped with a pinion 18 that engages with a rack 17 fixed on the movable table 14 at the base end of the reading arm 15, and rotating the reading motor 19. This is done by a driving force, and the reading arm 15 repeatedly moves in and out while maintaining a constant reading speed for each line of the musical score 3.
4 A pinion (not shown) of a line feed motor 23 fixed to the movable table 14 on a supporting table 22 having a rack 20 and a guide rail 21 on the lower side engages with the rack 20, and the reading arm 15 operates to read one line. This is done by moving the moving table 14 each time the process is completed. The movement of the reading arm 15 into and out of the reading arm 15 is as shown in another embodiment in FIG. Then, the rotation of a reading motor D having a drive shaft coaxially connected to the spiral rod B may be controlled to cause the reading motor D to appear and retract.

Next, the musical instrument performance mechanism 6 will be explained. In FIGS. 1 and 4(a), 6' is a drumstick that hits the tone plate 2' of the marimba 2, and the proximal end of the drumstick 6' is attached to one end of the rotation shaft 25 with a tightening device. 26. The rotary wheel 25 is rotatably supported through the upper part of the support 27.27, and a rotary arm 28 is rotatably supported approximately at the center. The rotating arm 28 is pivoted, and one end of the rotating arm 28 is urged upward by a force bomb 29, and the other end is connected to one end of a driving arm 30.
The other end is interlockingly connected to one end of a crank arm 31, and the other end of the crank arm 31 is pivotally supported by a drive shaft 34 of an electromagnetic clutch mechanism 33 connected to an output shaft (not shown) of a drive motor 32. It constitutes a crank mechanism 35.

The electromagnetic clutch mechanism 33 transmits the rotational driving force of the drive motor 32 to the drive shaft 34 in a freely connectable and disconnectable manner according to a control signal (not shown), adjusts the amount of operation of the crank mechanism 35, and controls the amplitude of the vertical movement of the drum 6'. The amount is controlled.

Note that the musical instrument playing mechanism 6 is not limited to this, and for example, as shown in FIG. The drive link mechanism H and the energizing bullet I may be configured to adjust the amount of vertical movement amplitude of the drumstick J.

The lower end of the support leg 24 of the musical instrument playing mechanism 6 is connected to the marimba 2.
The moving mechanism 7 is slidably connected to a moving mechanism 7 that is fixedly fixed in parallel to the longitudinal direction of the moving mechanism 7, and the moving mechanism 7 moves while being guided by a sliding guide rail 36, as shown in FIG. 5(a). stand 3
A pair of travel motors 38a and 38b mounted and fixed on 7
The drive shafts 39a and 39b of the drive shafts 39a and 39b are connected facing each other.
A traveling pinion 40 is installed coaxially at the connecting portion of 9a and 39b, and the traveling pinion 40 is engaged with a traveling rack 41 installed above between both ends of the sliding guide rail 36 in the longitudinal direction. This constitutes a moving mechanism 7. In addition,
The traveling motors 38a and 38b each have a dedicated rotation direction with respect to the left and right movement directions, and have a built-in clutch mechanism 4.
28 degrees 42b are mutually interrupted to enable quick movement, stop, and change of movement direction of the musical instrument playing mechanism 6.

Furthermore, the moving mechanism 7 is not limited to this, but as shown in FIG. The spiral rods N and N' are rotated and stopped coaxially through the spiral rod N.

It may be configured to control the movement of the movable base P and P' which are screwed together with N'.

FIG. 6 is an explanatory diagram showing an embodiment of a conversion method for encoding the musical score 3 read by the reading mechanism 5,
■ is a code group that specifies the octave, ■ is a code group that specifies the scale, ■ is a code group that specifies the type of note, ■ is a code group that specifies the semitone state of the scale, and ■ is the dotted state of the note. ■ is a code group that specifies the strength of a note, ■ is a code group that specifies the state of a single note or chord, and ■ is a code group that specifies performance technical effects (syncopation, vibrato, etc.) when playing a musical instrument. It is configured to display one note on a musical score represented by a staff notation using the above code groups ■ to ■. In addition, if it is necessary to arrange the notes on the staff according to the musical structure and repeat any measure, use only the code group that specifies the note type in ■, and use the other code groups i.
This field is left blank and is used as a code group to specify repetition. Similarly, as shown in FIG. 7(a), the code group ■ is used and all other code groups are left blank to designate the speed of sound of the entire musical score. Furthermore, to indicate the start and end of the score, either fill in all of the above code groups ■ to ■, or
Either leave them all blank or configure them to display as . FIG. 8 shows an example of converting a musical score using a staff notation into a musical score to be used in the automatic performance device of the present invention by using the conversion method of the code groups ① to ② described above.

For convenience of explanation, the color of the code is expressed by . and O, but in actual code, the O does not have a circular outline and does not appear on the sheet where the code is written.
Further, the shape of the code is not limited to this as long as it can be colored differently.

Therefore, as long as you can understand musical scores, even people who do not have the ability to play musical instruments can easily convert the original musical score into an automatically played musical score using the codes. A control block diagram of the conversion processing section 43 that converts the performance drive signal into the performance drive signal will be explained.

The conversion processing section 43 includes an interface 45 that inputs a music information signal 44 (not shown) transmitted from the optical sensor 16, a shift register circuit 46, a CPU 47, a clock pulse generator 48, and an output interface 49.

The clock pulse generator 48 keeps the reading speed of the reading arm 15 constant and controls the operation of the reading mechanism 5 that performs reading and line breaks on the musical score 3. The clock pulse generator 48 also controls the operation of the reading mechanism 5 which performs reading and line breaks on the musical score 3. It also has the purpose of keeping constant and synchronizing the speed of conversion and arithmetic processing in each section of the conversion processing section 43 that converts the converted music information signal 44. The shift register circuit 46 converts the music information signal 44 serially transmitted from the optical sensor 16 into a parallel signal for input to the CPU 47, and the CPU 47 applies various musical effects to the music information signal 44 converted into the parallel signal. In order to add information and performance techniques, it is connected to an external storage device 50 and has a function of converting it into a music information signal 44 that matches the performance format and outputting it. The music information signal 44 outputted from the CPU 47 is converted into a drive signal 44' for playing the musical instrument at the output interface 49, and is transmitted to the musical instrument playing mechanism 6 and moving mechanism 7.

In the configuration as described above, in order to automatically play the musical instrument, the musical score 8 is placed on one side of the music stand 3, and the reading arm 15, which has an optical sensor 16 formed at the tip, is used to first read the musical score 8. Set close to the top. Next, by a read start signal (not shown).

The reading arm 15 horizontally moves one line of the musical score 8 to read the music information on the musical score 8, and after the end of the - line, it returns the line and performs the reading operation again, and when it finishes reading the -th sheet of musical score 8, it is moved. Arm 13. 13' moves downward and suction cup 12.
12, the -th sheet music 8 is attracted and the transfer arm 13.13 is moved upward and horizontally to be transferred to the other side on the music stand 3, and the second sheet music 8 is Transfer arm 13.13 and suction cup 12 to the score reading position.
12, and reading of the musical score 8 is repeated again. On the other hand, the music information signal 44 read by the optical sensor 16 is transmitted to the shift register circuit 46 and the CPU 47 via the input interface 45, and is sent to the marimba 2.
The signal is output via the output interface 49 as a drive signal 44' for the musical instrument playing mechanism 6 according to the playing method.

The musical instrument performance mechanism 6 controls the transmission time of the rotational driving force of the drive motor 32 by turning on and off the electromagnetic clutch mechanism 33 in response to a drive signal 44', and is composed of a drive shaft 34, a drive arm 30, and a crank arm 31. Crank mechanism 3
Adjust the amount of vertical swing of step 5. Then, the drive arm 3
0, the amount of rotation of the rotating arm 28 changes, and the vertical movement of the drumstick 6' interlocked with the rotating arm 28 also changes to perform the action of hitting the tone plate 2'. At this time, the drive transmission time of the electromagnetic clutch mechanism 33 changes depending on the time length of the drive signal 44', and the rotation and rotation angle of the crank arm 31 change. , the drumstick 6' hits the tone plate 2' strongly, and if it is short, the amount of vibration of the drive arm 30 is small, so the drumstick 6' hits the tone plate 2' weakly. In addition, when using an intermittent drive signal 44', the drive arm 30 and the auxiliary ammunition 29 cooperate to
It becomes possible to play the tone plate 2' repeatedly, vibrato, etc.

Further, the music information signal 44 passes through the conversion processing section 43,
It is transmitted to the moving mechanism 7. In the moving mechanism 7, the clutch mechanisms 42a and 42b, which control the transmission of driving force between the travel pinion 40 and the travel motors 38a and 38b, are turned on and off using signal components that specify the scale and octave included in the music information signal 44. and move the drumstick 6' to the desired scale and octave position on the tone plate 2',
The marimba 2 is played in cooperation with the musical instrument playing mechanism 6 described above.

The moving mechanism 7 has running motors 38a and 38b dedicated to one direction, left and right, and a clutch mechanism 42a.

Since movement, stopping, and direction change are performed by alternately switching 42b, it is possible to move the musical instrument playing mechanism 6 with high followability even when playing fast passages.

〔Effect of the invention〕

In summary, the present invention includes a reading mechanism that reads music information expressed on a musical score, a conversion processing unit that converts the music information into a performance drive signal for a musical instrument, and a performance mechanism that plays a musical instrument using the converted performance drive signal. The music information read by the above-mentioned reading mechanism is arranged so that it is coded and colored on the sheet based on a certain conversion method, so even a person who does not have the ability to play a musical instrument can understand it as long as he or she can understand the music score. It is not only possible to immediately convert the original musical score into musical information for automatic performance using codes, but it is also possible to convert compositions and arrangements according to individual tastes into musical scores that can be performed automatically, which improves the performance ability of musical instruments. Even those who do not have a musical instrument can enjoy the automatic performance of their own musical compositions, which is a novel and extremely useful effect.

[Brief explanation of the drawing]

The drawings show an embodiment of the automatic musical instrument performance device according to the present invention, in which FIG. 1 is an overall perspective view of the automatic performance device, and FIGS. 6 to 7 Φ) are explanatory views of the main parts. , Figures 6-7
FIG. 8 is an explanatory diagram showing the structure of a musical score, FIG. 8 is an explanatory diagram showing an example of an encoded musical score, and FIG. 9 is a control block diagram of a conversion processing section that converts music information into a performance drive signal for a musical instrument. In the figure, 1... automatic performance device, 6... performance mechanism, 8... musical score, 44'... performance drive signal, 5... reading mechanism,
43... Conversion processing unit. Figure 7 Encounter μA-1-8<-II-B→D→B→(--oO Hibiki u1...

Claims (1)

[Claims] a reading mechanism that reads musical information expressed on the musical score;
It consists of a conversion processing unit that converts the music information into a musical instrument performance drive signal, and a performance mechanism that plays the musical instrument using the converted performance drive signal, and the music information read by the reading mechanism is sheeted based on a certain conversion method. An automatic performance device for a musical instrument, characterized in that the symbols are coded in different colors on the top.