JPH0428314B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic musical instrument in which the keyboard range can be divided into a plurality of sections for generating different musical tones, and the keyboard can be played by preprogramming the keyboard usage modes in a desired order. This eliminates the need to operate the keyboard usage mode changeover switch inside.

Conventionally, electronic musical instruments with a relatively small number of keys, such as single-keyboard electronic instruments, have been equipped with a keyboard usage mode changeover switch, and when this switch is set to the key range split mode, the key range is divided into two, and one of the divided key ranges is switched. It is known that a melody is played in one key range while accompaniment such as a chord is played in the other divided key range, and when the switch is set to normal mode, the melody is played in the entire key range.

However, it has been extremely difficult for beginners, etc., to operate the keyboard use mode changeover switch during performance, even if it is for experienced players. For this reason, the mode changeover switch is often always set to one mode of use, and it is difficult to say that the keyboard is being used effectively.

SUMMARY OF THE INVENTION An object of the present invention is to provide a novel electronic musical instrument with a divided keyboard range, which eliminates the need to operate a keyboard use mode changeover switch during performance, thereby making effective use of the keyboard.

The divided-key range electronic musical instrument according to the present invention is provided with means for programming keyboard usage modes such as normal mode and divided-key range mode in a desired order before playing, and during performance based on mode designation data from the programming means. The present invention is characterized in that the keyboard usage mode of the keyboard is controlled.Hereinafter, an embodiment shown in the accompanying drawings will be described in detail.

FIG. 1 shows an electronic musical instrument according to an embodiment of the present invention.

The instrument body 10 has a predetermined upper key range UK.
A keyboard 12 including a lower key region LK and a lower key region LK is provided.
Further, on the panel surface of the instrument body 10, there are a power switch 14, a plurality of timbre-related operators 16, a plurality of rhythm-related operators 18, a panel/program select switch 20, and a keyboard use mode designation switch 22. and keyboard use mode display element 24
and a write/read mode select switch 26.
A write command switch 28 is provided.

The panel/program select switch 20 is
The keyboard usage mode during performance is determined according to the setting state of the mode designation switch 22 on the panel surface, or
Alternatively, it is for determining or selecting according to mode designation data programmed in advance.

The mode designation switch 22 is a normal mode,
This is for specifying a keyboard use mode of single finger mode or finger guard chord mode, and the three display elements 24 have normal mode, single finger mode, and finger guard chord mode selected respectively. This is to display that.

The write/read mode select switch 26 is used to select either write mode or read mode as the operation mode of the sequence memory (described later), and the write command switch 28 is used when the write mode is selected. This is for specifying that mode specifying data corresponding to the setting state of the mode specifying switch 22 should be written into the sequence memory when the mode specifying switch 22 is set.

Next, the configuration and operation of the electronic musical instrument will be explained with reference to FIG.

The key switch circuit 30 includes a plurality of lower key range key switches 30L corresponding to each key of the lower key range LK.
and a plurality of upper key range key switches 30U corresponding to the respective keys of the upper key range UK. The pressed key detection circuit 32 detects the pressed key by scanning the key switches 30L and 30L, and detects the pressed key by scanning the key switches 30L and 30L.
Key data LKD and upper key area corresponding to key presses in
Key data UKD corresponding to key presses in the UK is sent separately.

Lower key range key data LKD and upper key range key data
UKD is supplied to the data distribution circuit 34. The data distribution circuit 34 receives a normal mode designation signal
Data distribution processing is performed according to NML and key range division mode designation signal SPT, and if normal mode designation signal NML is "1", lower key range key data
LKD and upper key range key data UKD are sent to the first output terminal as melody key data MKD, and if the key range division mode designation signal SPT is "1", upper key range key data UKD is sent to the first output terminal as melody key data MKD. At the same time, lower key range key data LKD is sent out as accompaniment key data AKD to a second output end.

In the circuit for generating the normal mode designation signal NML and the key range division mode designation signal SPT, the normal mode, single finger mode, and finger chord mode are programmed in the desired order according to the progress of the music before the performance starts. It's getting wet. That is, when the write/read mode select switch 26 is turned on, the write/read control circuit 36 enters the write mode, and mode designation data can be written into the sequence memory 38 consisting of a RAM (random access memory). become. Here, the write/read control circuit 36 includes an address counter, etc., and the sequence memory 3
This is to control data writing to or data reading from 8 on a measure-by-measure basis.

For example, if the mode designation switch 22 is set to the illustrated position a and the write command switch 28 is turned on, the mode designation data for the first measure including the normal mode designation signal NML will be written into the sequence memory 38. It will be done. Next, when the mode designation switch 22 is set to position b and the write command switch 28 is turned on, the sequence memory 38 contains the following information.
2 including single finger mode designation signal SF
The mode specification data for the measure is written. Further, when the mode designation switch 22 is set to position c and the write command switch 28 is turned on, the mode designation data for the third bar including the finger chord mode designation signal FC is written into the sequence memory 38. In a similar manner, mode designation data can be written into the sequence memory 38 for each measure from the fourth measure onwards.

When the write/read mode select switch 26 is turned off at the start of the performance, the write/read control circuit 36 enters the read mode. When the autorhythm is started, the counter 42 counts the tempo clock signal TCL from the tempo oscillator 40.
generates a bar pulse signal MP in synchronization with the bar end timing for each bar. The write/read control circuit 36 reads the mode designation data for the first measure from the sequence memory 38 in synchronization with the start of the autorhythm, and then reads the second measure data from the sequence memory 38 every time it receives the measure pulse signal MP from the counter 42. Reads the mode specification data for each measure after the measure.

The mode designation data read from the sequence memory 38 is supplied as input A to the selector 44. Mode designation signals NML, SF, and FC from the mode designation switch 22 are input to the selector 44.
It is supplied as. The selector 44 selects input A or B in accordance with a selection signal SA consisting of a state signal of the panel/program select switch 20, and the switch 20 is on (selection signal
If SA="1"), input A is selected, and if switch 20 is off (selection signal SA="0"), input B is selected. Therefore, from the selector 44,
Mode designation data corresponding to the setting state of the mode designation switch 22 on the panel surface or mode designation data read from the sequence memory 38 is sent out.

The mode designation data sent from the selector 44 includes a normal mode designation signal NML, a single finger mode designation signal SF, or a finger code mode designation signal FC. The normal mode designation signal NML is sent directly to the data distribution circuit 3.
4, single finger mode designation signal SF or finger code mode designation signal FC
is supplied to the data distribution circuit 34 via the OR gate 46 as the key range division mode designation signal SPT.
Note that the normal mode designation signal NML, single finger mode designation signal SF, and finger code mode designation signal FC are designed to drive three display elements 24 each consisting of a light emitting diode, so the panel surface Now, by looking at the display state of the display element 24, one can easily know which keyboard use mode is designated.

The melody key data MKD sent from the data distribution circuit 34 is supplied to the tone forming circuit 50 via the channel assignment circuit 48. The musical tone forming circuit 50 includes a plurality of musical tone forming channels, such as those for melody, chord, bass, etc., and the channel assignment circuit 48 is configured to allocate key data corresponding to each musical tone forming channel. Therefore, the melody key data MKD is assigned to the melody tone forming channel, and converted into a melody tone signal by the same channel. The melody sound signal from the musical tone forming circuit 50 is supplied to the speaker 54 via the output amplifier 52, and is produced as a melody sound.

Accompaniment key data AKD sent from the data distribution circuit 34 is stored in the key data memory 56. The key data memory 56 is the data distribution circuit 34
The stored contents are updated every time new accompaniment key data is supplied.

Accompaniment key data from the key data memory 56 is supplied to a chord key data forming circuit 58 and a base key data forming circuit 60. Mode memory 62
is for storing the single finger mode designation signal SF or finger code mode designation signal FC from the selector 44, and the stored contents are updated every time a new signal SF or FC is supplied from the selector 44. It's summery. Single finger mode designation signal SF or finger code mode designation signal FC from mode memory 62
is supplied to a chord key data forming circuit 58 and a base key data forming circuit 60.

The rhythm/accompaniment pattern data generator 64 generates a rhythm timing signal by reading out the contents of the pattern memory according to the count output CNT of the counter 42.
RP, a chord timing signal CT, and base pitch data BSP.The chord timing signal CT is supplied to the chord key data forming circuit 58, and the base pitch data BSP is supplied to the base key data forming circuit 60. Note that each base pitch data BSP indicates the pitch of the bass note to be generated relative to the chord root note.

If the single finger mode designation signal SF is "1", the chord key data forming circuit 58 generates chord constituent note key data corresponding to the chord name (root note and chord type) indicated by the accompaniment key data from the key data memory 56. Form the chord timing signal CT
If the fine guard code mode designation signal FC is “1”, the key data memory 56
The accompaniment key data from is sent out as chord constituent note key data in response to the chord timing signal CT.

The chord constituent tone key data CKD from the chord key data forming circuit 58 is supplied to the chord tone forming channel of the tone forming circuit 50 via the channel assignment circuit 48, and is converted into a chord signal. and,
The chord signal from the musical tone forming circuit 50 is sent to the output amplifier 5.
2 to the speaker 54, and is sounded as a chord.

If the single finger mode designation signal SF is "1", the base key data forming circuit 60 forms base key data based on the accompaniment key data and base pitch data BSP from the key data memory 56 and sends it out. If the guard chord mode designation signal FC is "1", a chord name is detected based on the accompaniment key data from the key data memory 56, and the chord name data and base pitch data are detected.
Forms base key data based on BSP and sends it.

The base key data BKD from the base key data forming circuit 60 is supplied to the bass tone forming channel of the tone forming circuit 50 via the channel allocation circuit 48, and is converted into a bass tone signal. The bass tone signal from the musical tone forming circuit 50 is supplied to the speaker 54 via the output amplifier 52, and is produced as a bass tone.

The rhythm sound source circuit 66 includes various rhythm sound sources, and generates rhythm sound signals by selectively driving these rhythm sound sources in accordance with the rhythm timing signal RP. The rhythm sound signal from the rhythm sound source circuit 66 is then supplied to the speaker 54 via the output amplifier 52.
converted into sound. Therefore, the autorhythm sound is produced from the speaker 54.

In the above embodiment, a single-keyboard type electronic musical instrument has been exemplified, but the present invention can also be applied to an electronic musical instrument having a plurality of keyboards, in which the keyboard of a certain level is controlled to be switched for accompaniment or melody performance. It is. In addition, the keyboard usage mode can be specified for each bar, but it can also be specified for each beat or half a bar, or for the beginning of a specific bar only in key range split mode (single finger mode or finger chord mode). mode) can also be specified.

As described above, according to the present invention, the keyboard usage modes such as normal mode and divided key range mode can be programmed as appropriate in consideration of the progress of the song before the performance, so there is no need to operate the keyboard usage mode switch during the performance. This means that the keyboard can be used more effectively. Additionally, as shown in the example above, by allowing key data to be registered not only for single finger mode but also for finger guard chord mode, it is possible to introduce inversion chords that are not possible in single finger mode. There are also some effects.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an electronic musical instrument according to an embodiment of the present invention, and FIG. 2 is a block diagram showing the circuit configuration of the electronic musical instrument of FIG. 12...Keyboard, 20...Panel/program select switch, 22...Keyboard usage mode designation switch, 26...Write/read mode selection switch, 28...Write command switch, 30...Key switch circuit, 32 ...Key press detection circuit, 34...Data distribution circuit, 36...Write/read control circuit, 3
8...Sequence memory, 48...Channel assignment circuit, 50...Music tone forming circuit, 56...Key data memory, 58...Chord key data forming circuit,
60... Base key data forming circuit, 62... Mode memory, 64... Rhythm/accompaniment pattern data generator.

Claims (1)

[Claims] 1. Keyboard means including a plurality of key ranges, and a first use mode in which the plurality of key ranges are used to generate the same type of musical tone, or a second use mode in which the plurality of key areas are used to generate different types of musical tones. a mode specifying means for specifying a mode, a sequence memory, and a write/read control means for sequentially writing mode specifying data from the mode specifying means into the sequence memory and sequentially reading the mode specifying data from the sequence memory. and when the mode designation data read from the sequence memory indicates the first use mode, the key data from the plurality of key ranges is sent to the first output terminal, and the key data read from the sequence memory is transmitted to the first output terminal. The mode specification data is the second
data for transmitting key data from one of the plurality of key ranges to the first output terminal and key data from the other key range to the second output terminal when instructing a usage mode of the key range; a distributing means, which generates a musical tone signal based on the key data from the first output terminal, and generates a musical tone signal of a different type from the musical tone signal based on the key data from the second output terminal; An electronic musical instrument equipped with a musical sound generating means.