JPH068996U - Automatic playing device - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention relates to an automatic performance device having a "random mode" in which a plurality of stored performance information corresponding to a plurality of stored music are sequentially read out randomly and continuously played. And one song is always selected by one random number generation. A numerical value is made to correspond to a music piece which has not been selected among a plurality of music pieces stored in the performance information storage means, and a numerical value corresponding to the musical piece to be played is randomly generated from the corresponding numerical values.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an automatic performance device having a "random mode" in which a plurality of stored performance information corresponding to a plurality of stored music are sequentially read at random and played continuously.

[0002]

[Prior art]

 In recent years, in order to easily enjoy music, a plurality of performance information corresponding to a plurality of songs is stored in a semiconductor memory, a compact disc (CD), etc. in the form of digital data, and the performance information is stored in a semiconductor memory, a CD, etc. An automatic performance device has been put into practical use that reads music from and plays back music.

In designating the songs to be played by this automatic playing device, in addition to the mode in which the user should designate the songs to be played and their order one by one, the songs can be enjoyed more easily. A so-called random mode has been proposed in which the performance order is automatically selected by an automatic performance device (see, for example, Japanese Patent Publication No. 4-5995 and Japanese Patent Publication No. 63-16836).

[0004]

[Problems to be solved by the device]

 In order to avoid that the musical pieces to be played and their playing order are uniform in the random mode, the Japanese Patent Publication No. 4-5995 has a random number generating means for generating a random number and playing musical pieces and playing order. It is suggested to choose. However, when random numbers are generated several times, the same numerical values may be lined up stochastically, so even if a song to be played is selected with a random number, the same song is played repeatedly and a monotonous performance is produced. It may become

The above Japanese Patent Publication No. Sho 63-1836 proposes that a random number generating means is also provided to select a musical piece to be played by a random number. Here, the generated random number is already reproduced. If it corresponds to, the random number is regenerated without playing the song again, so that the same song is prevented from being played repeatedly. However, for example, in the case of playing from the 30th song to the 29th song and only playing the remaining 1 song, even if a random number is generated, the probability that the numerical value corresponding to the remaining 1 song will appear is 1 Since it is / 30, and this is a problem of probability, for example, a random number is generated hundreds of times, and the numerical value corresponding to the remaining one song may finally come out. Therefore, when selecting a performance song, etc. There is a problem that it takes more time than necessary and the CPU built in this automatic performance device may be occupied more than necessary.

The present invention solves the above problems and provides an automatic performance device having a random mode devised so that monotony is avoided and one song is always selected by one random number generation. The purpose is to

[0007]

[Means for Solving the Problems]

 To achieve the above object, the automatic performance device of the present invention comprises a performance information storage means for storing a plurality of performance information corresponding to a plurality of music pieces, and a selection means for sequentially selecting a music piece to be played from the plurality of music pieces. And a performance means for reading the performance information corresponding to the song selected by the selection means from the performance information storage means and performing the performance, the selection means still selects one of the plurality of songs. Numerical value associating means for associating numerical values with songs that have not been played, and random number generating means for selecting a numerical value corresponding to the musical piece to be played from among the numerical values associated with the numerical value associating means by random numbers. It is characterized by that.

[0008]

[Action]

 The automatic performance device of the present invention associates a numerical value with a music piece that has not been selected from among a plurality of music pieces stored in the performance information storage means, and generates a random number corresponding to the performance music piece from the associated numerical values. Since it is generated by, the song selected once is never selected again during the series of random modes, so that it is possible to surely avoid monotonous performance. One random number is selected from the unselected tracks by random number generation.

[0009]

【Example】

 Embodiments of the present invention will be described below. FIG. 1 is a block diagram showing the configuration of an embodiment of the automatic performance device of the present invention. The control unit is composed of a CPU, a ROM for storing the program of the CPU, a RAM as a memory area required for the CPU to operate, a timer for measuring the elapsed time during the program operation, and the like.

Further, the performance information memory 2 stores a large number of performance information corresponding to a large number of songs in the form of digital data. The panel 3 is provided with various switches, a liquid crystal display unit, and the like, and it is possible to specify a desired musical piece or the like by using this switch. This panel 3 also has a random mode button. When you press this random mode button and then the start button, you will be able to follow the performance tracks and performance order selected by the automatic performance device itself as described later. Corresponding performance information is read from the performance information memory 2 and sent to the musical tone generating section 4.

Under the control of the control section 1, the tone generation section 4 generates a tone signal based on the sent performance information, and the generated tone signal is amplified by an amplifier 5 and a speaker 6. It is emitted as a musical sound. The random mode, which is the subject of the present invention, will be described below. 2 is a flowchart of a program executed in the random mode, and FIG. 3 is a map schematically showing the contents of the performance information memory shown in FIG.

As shown in this map, performance information corresponding to each song is stored in different areas on the memory, and each performance information corresponding to each song is stored at the beginning of each area. , AD_1, AD_2, ..., AD_N are assigned. 4 and 5 show a time series of a correspondence table (FIG. 4) between addresses and numerical values of a RAM (not shown) provided in the control unit 1 shown in FIG. 1 and renumbering of numerical values recorded in the corresponding tables. It is the figure (FIG. 5) shown typically. Further, FIG. 6 is a diagram showing a performance queue in the RAM.

Here, the flow shown in FIG. 2 will be described with reference to FIGS. Here, for simplification, the same reference numeral is used without distinguishing between the register itself and the numerical value stored in the register. When a random mode button (not shown) provided on the panel 3 shown in FIG. 1 is pressed, the flow shown in FIG. 2 is executed. First, in step (a), the correspondence table shown in FIG. ), 1 to N are recorded in order. After that, an initial value 0 is written in the register M representing the number of songs already selected, since no song is selected here (step (b)), and the register L representing the number of unselected songs is written. NM (here, the initial value N) is written (step (c)).

Next, it is determined whether or not L is 0, that is, whether or not all the songs have already been selected (step (d)). Since L = N and L ≠ 0 here, Proceed to step (e). In this step (e), a random number is generated within a numerical range of 1 to L (that is, 1 to N here), and the generated random number is stored in the register R. Then, in step (f), the address (AD_R shown in FIG. 5A) on the performance information memory (see FIGS. 1 and 3) corresponding to the numerical value R is arranged in the performance queue as shown in FIG. To be

After that, as shown in FIG. 5, 0 is written in the column in which the numerical value R has been recorded in the correspondence table (step (g)), and each column in which the numerical value after R + 1 has been recorded. The numerical value is decremented by 1 (step (h)). As a result, one music piece to be played is selected. Therefore, the value of the register M is incremented by 1 (step (i)), and the process returns to step (c). At step (c), the value of the register L representing the number of unselected songs is updated to NM (here, N-1).

Next, the process proceeds to step (e) again via step (d), but a random number is generated within the range of 1 to L, that is, 1 to N−1, and the generated random number is Stored in register R. If 2 is generated as a random number here, in step (f), the address AD_2 corresponding to the numerical value 2 in the correspondence table shown in FIG. 5B is arranged in the queue shown in FIG. 0 is recorded in the record column of 2 and the record columns after the numerical value 3 are decremented by 1, and thereby rewritten as shown in FIG. 5 (C).

As described above, since the re-numbering is performed every time one music is selected, the same music is not lined up in the queue shown in FIG. 6 and the random number is always generated by one random number generation. One of the selected songs will be selected. Random music selection is performed as described above. When the user presses the random mode button and then the start button, the performance information stored at the addresses in the queue (Fig. 6) on the performance information memory are sequentially read in the order in which they are queued. The sound is sequentially sent to the musical sound control unit 4 and is emitted through the amplifier 5 and the speaker 6 as described above.

In the above embodiment, a queue is provided to select all the pieces of music to be played and the order of performance in advance. However, it is not always necessary to select all of them before starting the performance. One song may be selected and played, and the next song may be selected and played after the performance is finished, so that the songs may be sequentially selected during the performance. In the above embodiment, the random mode button and then the start button are pressed to randomly play the music from the beginning of the performance, but when the start switch is pressed first, the start switch is pressed. When you press the Random switch while the normal performance is started, which is played sequentially in the memorized order by pressing, and the song being played is finished, it will still be played. The remaining songs that are not played may be configured to be played randomly.

Further, when the user presses the program mode button for setting the order of the musical pieces to be programmed to program the musical performance order of one or a plurality of musical pieces of all the musical pieces, and then presses the random mode button, the musical order is still set. With respect to the remaining songs which are not designated, the playing order may be set randomly as described above. Further, although the above embodiment relates to the automatic performance device for storing the performance information in the semiconductor memory or the like, the present invention also applies to the automatic performance device for reading and reproducing the performance information stored in the CD or the like. It goes without saying that it is applicable.

[0020]

[Effect of device]

 As described above, the automatic performance device of the present invention assigns a numerical value to a song that has not been selected among the plurality of songs stored in the performance information storage means, and uses a random number from among the associated numeric values to play a song. Since it is configured to select, it is possible to avoid monotonous performance, and it is possible to prevent one CPU from unnecessarily occupying a song by randomly generating one random number and thus taking a long time to select a song.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of an automatic performance device of the present invention.

FIG. 2 is a flowchart of a program executed in random mode.

FIG. 3 is a map schematically showing the contents of a performance information memory shown in FIG.

FIG. 4 is a correspondence table of addresses and numerical values in RAM.

FIG. 5 is a diagram showing, in time series, renumbering of numerical values recorded in a correspondence table.

FIG. 6 is a diagram showing a performance queue in RAM.

[Explanation of symbols]

 1 Controller 2 Performance Information Memory 3 Panel 4 Musical Sound Generator 5 Amplifier 6 Speaker

Claims (1)

[Scope of utility model registration request] 1. A performance information storage means for storing a plurality of performance information corresponding to a plurality of music pieces, a selection means for sequentially selecting a music piece to be played from among the plurality of music pieces, and a music piece selected by the selection means. The corresponding performance information,
In an automatic performance device comprising a performance means for reading from the performance information storage means and performing the performance, the selection means associates a numerical value with a music piece which has not been selected among the plurality of music compositions, and the numerical value correspondence means. From the numerical values associated by the associating means,
An automatic performance device comprising random number generating means for selecting a numerical value corresponding to a piece of music to be played by a random number.