JP3298384B2 - Automatic performance device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic performance apparatus capable of executing an automatic performance by reading stored automatic performance data.

[0002]

2. Description of the Related Art An automatic performance apparatus performs an automatic performance by sequentially reading stored automatic performance data as the performance progresses. At this time, in addition to reading from the beginning of the automatic performance data, it is also possible to specify a measure number and start reading the performance data from the specified measure position.

[0003]

If the user wants to listen to a performance at a different bar position, he must re-specify the bar number, and the operation is very troublesome when changing the desired bar position one after another. In addition, the position to be listened to could be changed by incrementing / decrementing the bar number by operating the switch. However, if the bar number of the position currently being played and the next position to be listened are separated,
The switch must be operated many times before the measure number to be listened to is designated, and the wrong measure number is often passed by an operation error.

[0004]

In order to solve the above-mentioned problems, an automatic performance device according to the present invention comprises a first storage means for storing automatic performance data, a plurality of operators, and the plurality of operators. And second storage means for storing start position data for specifying a position at which reading of the automatic performance data stored in the first storage means is to be started. Reading means for starting reading of automatic performance data from the position indicated by the start position data based on the start position data stored corresponding to the operated operator. .

An automatic performance device according to a second aspect of the present invention is provided in correspondence with first storage means storing a plurality of automatic performance data, a plurality of operators, and each of the plurality of operators. A second memory for storing selection data for selecting any of the automatic performance data stored in the first storage means and start position data for specifying a position at which reading of the selected automatic performance data is started. Based on the selection data and the start position data stored corresponding to the operated operator in response to the operation of the operator,
Reading means for selecting the automatic performance data indicated by the selected data and starting reading the automatic performance data from the position indicated by the start position data.

In the first and second aspects of the present invention, there may be further provided a reading control means for stopping reading of the automatic performance data in response to the end of the operation of the operation element.

[0007] By providing such means, the first
In the present invention, by operating any of the plurality of operators, the reading of the automatic performance data is started from the start position with reference to the read start position data stored corresponding to the operator. . By operating different operators, automatic performance data at different positions are read.

In the second invention, by operating any of the plurality of operators, the selection data and the readout start position data of the automatic performance data stored corresponding to the operators are referred to. The reading of the selected automatic performance data is started from the start position. By operating different operators, reading of different automatic performance data is started from different positions. If the same automatic performance data and different start positions are associated with a plurality of operators, it is possible to start reading the same automatic performance data from different positions.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing a schematic configuration of an automatic performance device according to the present invention. A CPU (Central Processing Unit) 1 controls the operation of the entire apparatus, and a ROM
(Read only memory) 3 executes processing in accordance with the control program stored in the memory. Further, the CPU 1 and each section are connected via a bus 2, and various data are transmitted and received.

RAM (random access memory) 4
Is provided with an area such as a register and a flag for temporarily storing various data generated at the time of processing by the CPU 1, an area for storing a plurality of automatic performance data, and an area for a song major memory described later. Have been. The timer 5 supplies an interrupt signal to the CPU 1, and generates an interrupt signal of a predetermined cycle. R
The performance data stored in the AM 4 is read out by an interruption process at a predetermined cycle executed by the CPU 1 and supplied to a tone generator circuit 12 described later.

Reference numeral 6 denotes a MIDI (musical instrument digital interface) interface (I / F) for transmitting and receiving data to and from an external device. For example, performance data supplied from the outside is fetched and stored in the RAM 4 or the like.

Reference numeral 7 denotes a keyboard detection circuit which detects operation of the keyboard 8 and supplies ON / OFF of the operation, note numbers and velocities of operated keys to the CPU 1 via the bus 2. The CPU 1 supplies data relating to these performances to a tone generator circuit 12 described later. A switch detection circuit 9 detects an operation of the panel switch 10. The detected operation of the switch is supplied to the CPU 1 via the bus 2.

Reference numeral 11 denotes a display circuit (for example, a liquid crystal display or a CR
T, etc.), as will be described later with reference to FIG.

The tone generator circuit 12 forms a musical tone waveform signal based on the supplied performance data. As a method of the sound source circuit, a well-known waveform memory reading method, an FM (frequency modulation) method, a physical model simulation method, a harmonic synthesis method, a formant synthesis method, an analog synthesizer method combining an oscillator and a filter, and the like are used.
The tone waveform signal formed in the sound source circuit 12 is emitted as sound in the sound system 13. The tone generator circuit is not limited to the one that uses a dedicated hardware, and may be configured using a DSP (digital signal processor) + microprogram, or the tone generator circuit may be configured with a CPU + software program. It may be configured. Further, a plurality of tone generation channels may be formed by using one circuit in a time-division manner.
It may be of a type configured with one circuit. In addition, a connection to an external device may be made using communication means such as various networks.

FIG. 2 is a diagram showing an example of the display of the main part of the panel switch 10 and the display circuit 11. As shown in FIG. Reference numeral 10A denotes eight song major switches numbered from 1 to 8, and each switch is assigned one "song number and bar number". The “song number and bar number” assigned to each switch are displayed on the display circuit 11 as 11A. In this example, switch 1 is assigned the first bar of song 1 and switch 2 is assigned the ninth bar of song 1. Similarly, switch 3 contains the first measure of song 1, switch 3 contains the first measure of song 1, switch 3 contains the 33rd measure of song 1, and switch 4 contains the 21st measure of song 1. , Switch 5 has the 17th bar of song 4, switch 6 has the 61st bar of song 4,
The switch 7 is assigned the tenth bar of the song 5, and the switch 8 is assigned the twenty-first bar of the song 5. This assignment state is determined by the contents stored in the song major memory described later.

Reference numeral 10B denotes a mode switch.
And mode B are alternately switched for each switch operation.
Mode A is a mode in which the song selected by the song measure switch is continuously played until the song ends or the stop switch 10C is operated, and mode B is selected by the song measure switch. In this mode, the user plays the played song until the switch is released. The state of the mode set by the mode switch 10B is displayed as 11B.

The number of the song being played and the number of the bar being played are displayed as in 11C. The bar numbers are sequentially updated as the performance progresses.

FIG. 3 is a diagram showing the contents stored in the song data memory provided in the RAM 4. 4A is setting data in which various setting data such as a song name, a tempo, and a tone color are stored. 4B is timing data, and 4C is event data. The event data 4C is data representing an event related to performance such as key-on event data, key-off event data, pitch bend event data, and the like.
They are stored in the order of occurrence as the performance progresses. The timing data 4B is data indicating an occurrence time interval of each event data. According to a predetermined minimum resolution based on the note length (for example, 1/24 of a quarter note length), timing data is described by the number of the notes. Timing data and event data are stored alternately to form song data. End data 4D is stored at the end of the automatic performance data. Such song data is stored in the RAM 4
Are stored for a plurality of songs. Each event data is assigned a channel number from 1 to 16, and the performance part differs depending on the channel number.
That is, it takes a form in which a plurality of performance parts are mixed. Note that the format may be such that data of a plurality of parts is stored in different tracks.

FIG. 4 is a diagram showing the stored contents of the song major memory provided in the RAM 4. As described above, the "song number and bar number" are assigned to the eight song major switches 10A, respectively. This song major memory is a memory in which the assignment state is stored. There are eight storage blocks corresponding to each song major switch, and each storage block stores a song number and a bar number.
The song major memory may be rewritable by the user, or may have a plurality of sets of song major memories, and any one of the sets may be assigned to the song major switch. .

FIGS. 5 to 8 are flowcharts of control programs executed by the CPU 1. FIG.
FIG. 5 shows a process executed when the mode switch 10B is operated. When the mode switch 10B is operated, it is determined in step s1 whether the currently set mode is A. If A, the mode is set to B in step s2. Set the mode to A. Then, the mode display 11B is changed according to the mode set in step s4, and this processing ends.

FIG. 6 shows a process executed when any one of the song / major switches 10A is operated. When the switch is turned on, YES is determined in the step s11, and the process proceeds to a step s12. In step s12, it is determined whether or not the song data is currently being read. If so, the process of reading the song data is stopped in step s13 to shift to the next song data. Then, in step s14, the "song number and bar number" assigned to the switch that has been turned on are read from the song major memory.
Then, it is determined whether or not the read song number is the same as the content stored in the register SONG (the previously read song number). If YES, the process directly proceeds to step s18, and if NO, the process proceeds to step s16, where the setting data of the song data indicated by the read song number is read and set to each unit. For example, when the timbre data is read out, it is set in the tone generator circuit 12. Then, in step s17, the song number is stored in the register SONG, and the process proceeds to step s18.
That is, if the currently selected song number is different from the previously read song number, the setting data of the selected song is set in each section, but if the same, the same setting data is intentionally set in each section. No need.

At step s18, a position on the song data indicated by the bar number is searched. As a search method,
There are methods such as counting the timing data for the measure, and counting the number of the measure line data if the song data includes the measure line data. However, any method may be used for searching. In step s19, reading of song data is started from the searched bar position.

On the other hand, if NO is determined in step s11 (that is, the song major switch 10A is turned off), it is determined whether or not the current mode is B in step s20. It is determined whether or not the song data is currently being read, and if so, in step s22, the SONG content (= the currently read song number) and the song number assigned to the currently turned off switch Is determined to be the same, and if they are the same, the song data reading process is stopped in step s23. Steps s20, s21, s2
If NO is determined in step 2, step s23 is not performed. That is, when the mode is B, the reading of the song data is stopped when the song major switch 10A is turned off, but the reading of the song data has already been stopped (= the reading of the song data has reached the end, Alternatively, if the stop switch is pressed), or if another song major switch is pressed while reading the song data and song data with a different song number is being read, assign it to the switch that was turned off this time. Since the reading of the song data already completed has already been completed,
This is because there is no need to perform the reading stop processing of the song data in step s23.

FIG. 7 is a diagram showing a song data reading process executed at predetermined intervals when the song data is being read. The predetermined period is, for example, 10 m
s. At step s31, the register TIME
And a value obtained by subtracting the predetermined value K from the above is stored in the register TIME. Here, the register TIME is a register to which the timing data of the read song data is input, and is used for managing the progress of reading the song data.
The timing data is input in step s3 described later.
7 is performed, but as an initial value, the above-described step s18 is performed.
In, the timing from the searched bar position to the next event data that appears first is set.

The predetermined value K is equal to the period of the reproduction process (for example, 10 m
s) corresponds to the length of the unit note to be advanced during
K = (tempo × resolution × interruption cycle) / (60 × 100
0). Here, “tempo” is the number of quarter notes played in one minute, and “resolution” indicates how many quarter notes are described in the timing data of the performance data. For example, since the timing data is obtained by dividing quarter notes into 24 as described above, the “resolution” is 24. The “interruption cycle” is a generation cycle of an interrupt signal when the reproduction process is executed, and is 10 ms in this embodiment as described above. Therefore, if the “tempo” is 120, the “resolution” is 24, and the “interruption cycle” is 10, the value of K becomes 0.48, and the time data advances by 0.48 by one reproduction process. . For example, assuming that the value of the time data is "48 (= corresponding to the length of a half note)", the performance of the half note progresses through 100 processes (= 1 second).

In step s32, it is determined whether or not the content of the register TIME has become a value of 0 or less as a result of the subtraction in step s31.
Go to 33 or later. If the value is not equal to or less than 0, it means that the timing for reading out the next event data has not yet been reached, and this processing is immediately terminated.

In step s33, the address of the song data is advanced to read the next data. In step s34, it is determined whether the read data is timing data. At the time of entering this process, the address indicates the timing data, and as a result of advancing the address in s33, the event data is read out, so the determination in s34 is NO. In step s35, it is determined whether or not the read event data is end data.
Initially, it is not end data, so the determination is NO, and the process proceeds to step s36 to execute processing according to the event data. That is, if the read event data is a key-on event, a key-on event is output to the tone generator circuit to start generation of a musical tone, and if it is a key-off event, a key-off event is output to the tone generator circuit to mute the musical tone. Let it start.

Thereafter, the operation proceeds to step s33 again, and when the address of the song data is advanced, since the timing data is stored, YES is determined in step s34. In step s37, the value of the read timing data is added to the contents of the register TIME, and the value in step s3
At 8, it is determined whether the value of TIME has become a positive value.
If the value is a positive value, this process ends. If the value is not a positive value, the processes of steps s33 to s38 are repeated. For example, when a chord is to be pronounced, a plurality of event data occur almost simultaneously, so that the timing data between events has a value of 0 or a value close to 0. In such a case, NO may be determined in s38. When YES is determined in s35, since the end data has been read, the reading process of the song data is stopped.

FIG. 8 shows a process executed when the stop switch 10C is operated. When the stop switch 10C is operated, it is determined in step s41 whether or not the song data is currently being read, and if so, the read process of the song data is stopped in step s42. This stops the automatic performance of the song.

Next, an operation example of the automatic performance device of the present invention will be described. When the mode is A, song measure switch 1
When any of 0A is turned on, the song data assigned to the switch and the reading start measure are determined by referring to the contents of the song major memory, and the automatic performance of the song starts. Even if the switch is turned off in this state, the automatic performance continues. afterwards,
When another song major switch is operated, the song data assigned to the operated switch is read from the position of the specified bar number. Then, when the stop switch 10C is operated or when the song data being read has reached the end, the automatic performance of the song data ends. Such an operation is suitable for performing a medley performance. For example, if a song number to be played by the medley and a bar number to be started at the beginning of the song are registered in the song major memory, and the next switch is turned on at any time during the execution of a certain song, a new song is created. The new song starts from the set bar position. Compared to a conventional medley performance (each song is played from the beginning in a predetermined order), a medley performance with a very high degree of freedom can be performed.

On the other hand, when the mode is B, when one of the song major switches 10A is turned on, the song
By referring to the contents of the major memory, the song data assigned to the switch and the reading start bar are determined, and the automatic performance of the song starts.
When the switch is turned off, the reading of the song data is stopped. If the song data reaches the end before the switch is turned off, the reading of the song data stops at that point. If another song major switch is turned on before the switch is turned off, the process shifts to reading the song assigned to the newly turned on switch at that time. Such an operation is suitable for previewing a plurality of stored song data. For example, the bar number of the most characteristic part (such as rust part) of each of a plurality of stored song data
If the song is registered in the major memory, only the characteristic portion of the stored song can be listened to one after another simply by turning on one of the song major switches 10A. In addition, since it is not necessary to press the stop switch provided separately when stopping the performance, even those who are not familiar with how to operate the product, such as when demonstrating the product at the store, can easily operate the product, You can listen to the song data.

The automatic performance device of the present invention may be incorporated in an electronic musical instrument, or may be realized in the form of a personal computer and application software. Further, the present invention may be applied to a function of introducing a new song in a karaoke apparatus.

The number of song / major switches is eight.
Not limited to individual. This switch may be a dedicated switch, or may be shared with another function. Also,
A switch may be virtually provided on the display device, and the switch may be designated by using a pointing device such as a mouse on the display to replace the switch.

In the above embodiment, the reading of the song data is stopped when the song data reaches the end. However, it is set for each song which song is to be played next. Then, when the processing reaches the end, the processing may be shifted to the reading of the automatically set song data. At this time, it may be possible to set whether to immediately start reading the next song data or to start reading after giving a predetermined start instruction.

When assigning a song number and a bar number to the song major switch, if a registration operation is performed while certain song data is being read, the song number and the song number of the song being read at that time will be changed. Measure positions may be assigned.

The start position of the song to be assigned to the switch is not limited to the bar position, but may be any measure such as a bar + beat position, an absolute time from the beginning of the song, or a phrase position when the song is divided into predetermined phrase sections. The start position may be set in a different format.

Further, when another song major switch is operated while a certain song is being read, the song corresponding to the next switch is read immediately. The reading may be continued, and then the process may proceed to the next song. Further, in the mode B, the reading of the song is not limited to the one immediately after the switch is turned off, but the reading of the song may be continued until the end of a measure or the end of a phrase, and thereafter the reading may be ended.

In this embodiment, both the song number and the bar number are assigned to the switches. However, only the bar numbers are assigned so that the performance bar positions of a certain song can be switched one after another. It may be. At this time, a plurality of bar positions assigned to the switches may be stored for each song.

The storage format of the song data is described as "event data + relative time between events", but "event data + absolute time of each event data", "pitch data + note length data". And any other format.

Also, an example of a system in which the song data reading process is performed at a fixed cycle and the value for counting the timing data in one process is changed according to the tempo has been described. The data count value is constant, the method of changing the song data read processing cycle according to the set tempo, or the song data read processing cycle is constant, and the read timing data value is set according to the set tempo. It may be modified.

[0041]

As described above, according to the present invention,
With simple operations, automatic performance data at different positions can be heard one after another.

[Brief description of the drawings]

FIG. 1 is a schematic block diagram according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a display example of a panel switch and a display device according to an embodiment of the present invention.

FIG. 3 is a diagram showing a storage format of song data according to an embodiment of the present invention.

FIG. 4 is a diagram showing stored contents of a song major memory in one embodiment of the present invention.

FIG. 5 is a diagram showing a flowchart of a mode switch process in one embodiment of the present invention.

FIG. 6 is a diagram showing a flowchart of a song / major switch in one embodiment of the present invention.

FIG. 7 is a diagram showing a flowchart of a song data reading process according to an embodiment of the present invention.

FIG. 8 is a diagram showing a flowchart of a stop switch process in one embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... CPU, 3 ... ROM, 4 ... RAM, 10 ... Panel switch, 11 ... Display circuit, 12 ... Sound source circuit

Claims (3)

(57) [Claims] 1. A first storage means for storing automatic performance data, a plurality of operators, and an automatic performance stored in the first storage means, provided in correspondence with each of the plurality of operators. Second storage means for storing start position data for designating a position at which data reading is to be started; and, in response to an operation of the operating element, based on the starting position data stored corresponding to the operated operating element. Reading means for starting reading of automatic performance data from the position indicated by the start position data. 2. A first storage means for storing a plurality of automatic performance data, a plurality of operators, and a plurality of operators provided corresponding to each of the plurality of operators, and stored in the first storage means. Second storage means for storing selection data for selecting any one of the automatic performance data and start position data for specifying a position at which reading of the selected automatic performance data is to be started; Accordingly, the automatic performance data indicated by the selected data is selected based on the selected data and the start position data stored corresponding to the operated operator, and the automatic performance data is read from the position indicated by the start position data. An automatic performance device, comprising: a reading unit that starts the operation. 3. The automatic performance device according to claim 1, further comprising a read control unit that stops reading of automatic performance data in response to the end of the operation of the operation element.