JPH02173796A - Electronic musical instrument - Google Patents

Abstract

PURPOSE:To easily correct the loudness of the low frequency side of a musical and to obtain the musical sound which has thickness in characteristics by determining the number of musical sound generation channels which are used according to a pitch or loudness. CONSTITUTION:A CPU 2 includes a program ROM in addition to a read part 2a, a register part 2b, and a musical sound generation part 2c and controls the whole device according to the program in the ROM. The state of an operation part 1 is read by the read part 2a and stored in the register part 2b and the read part 2a accesses a waveform ROM 3 and a rhythm pattern ROM j4. In this case, the number of musical sound generation channels assigned to one pitch data is set optionally according to the pitch. For example, two musical sound generation channels are used and musical sounds of the same pitch and the same timbre are mixed as to one note, thereby generating, for example, a base sound. Consequently, the loudness of low frequency is increased and the loudness balance with the loudness of, for example, a melody sound of high frequency becomes excellent.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electronic musical instrument capable of generating musical tones based on data such as pitch and timbre assigned to musical tone generating channels.

[Prior art and points in between]

Conventionally, as a method of correcting the difference in 'ff' between the bass range and the treble range, the shape of the Vr envelope has been changed depending on the sound range or pitch, or the output characteristics of the amplifier have been changed. However, when trying to use the conventional technology in a small electronic musical instrument, the frequency characteristics cannot be satisfied simply by increasing f-f because the speaker is small.

[Purpose of the invention]

The present invention has been made in consideration of the above-mentioned circumstances, and its object is to provide an electronic musical instrument that is simple and has excellent frequency characteristics and a good volume balance from the bass to the treble range. .

[Key points of the invention]

In order to achieve such an object, the present invention makes it a point to arbitrarily set the number of musical tone generation channels to be assigned to one f-height data according to the height of the eaves.

Another key point of the present invention is to arbitrarily set the number of musical tone generation channels to be assigned to one piece of musical tone data in accordance with input and set fit data.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the overall circuit configuration of the electronic musical instrument according to this embodiment. In the figure, the operating section 1 represents the operating elements of an electronic musical instrument such as a keyboard, and by pressing a key,
Selection (SEL) key 1α for specifying the rhythm set according to the pressed key and selecting the mode for starting the performance of this specified rhythm.
, a stop (STOP) key 1b for stopping the performance of the specified rhythm. CPU2 is reading section 2
α, the register section 2b, the musical tone generating section 2C, and programs H and OM are included, and the program 1 controls the entire apparatus H accordingly. The state of the operating section 1 is read by the read MS 2α and recorded in the register section 2b as 1. i1 will be done. Furthermore, the waveform of the continuous part 2α)? , OM3, rhythm pattern ROM4
access.

The waveform ROM 3 includes wave lid data indicating rhythm tones, pace tones, and backing tones necessary for rhythm performances. In the rhythm pattern R.0M4, patterns for rhythm sounds necessary for rhythm performance, (7) patterns for bass sounds, patterns for backing, etc. are written in one line. Figure 2 1
This shows the format of the pattern for the bass sound. A bass note consists of two words, and each word consists of a tone number and pitch data. Furthermore, both words are composed of the same data, and two bass notes are generated next to the same word. The waveform data read out by the reading unit 2α and each pattern data necessary for rhythm performance are set in the register unit 2bl, and in particular data for the bass sound is set in the register 21 rDco-1) and the register 22 (DC
Data of each word is set in O-2). The output of the register section 2b is input to the musical tone generating section 20, where each musical tone is generated, converted into an analog music signal by the D/A converter 5, amplified by the amplifier 6, and then emitted via the speaker 7. be heard.

FIG. 3 shows a flowchart of the embodiment. When the power is turned on, the CPU 2 performs initial IJA setting processing in step aO. In step a1, it is determined whether or not the SEL key is turned on, and if it is not turned on, other processing such as key press processing is performed (step a2), and if it is turned on, the rhythm pattern selection mode is entered. It is determined whether or not a wall for specifying a rhythm name has been pressed (step a3).

When a key is pressed, the first address where the rhythm pattern corresponding to the key pressed is stored is specified (step a5 for reading out the stem data) and set in the register section 2b. As for the pattern data for the bass sound, the first one word worth of data is set in the register 21, and the second one word worth of data is set in the register 22 (step a6, step a7). Then, based on the various data set in the register section 2b, musical tones are created in the ¥1 note generating section 2C (step a8). Then, it is determined whether the stop key 1b is turned on or not (Step a9), and if it is turned on, the rhythm is stopped (Step a10) Step a
Go back to 2. If the stop key 1b is not turned on, the process returns directly to step a2.

In this embodiment, to generate the bass sound, two musical sound generation channels are used to mix two musical tones of the same pitch and the same tone color for one note, so the bamboo leaves in the bass range are increased. The tonal balance with the ft of a melody sound in the high range, for example, is improved.

[Other Examples]

In addition to the above-described embodiment, it is also conceivable to correct the emotional balance by using, for example, all melody tones and using two musical tone generation channels for melody tones below a certain f-high.

It is also conceivable to use two musical tone generation channels for pitch data from a sequencer, regardless of the push-insertion operation, for 1f pitch data below a certain pitch.

Furthermore, instead of determining the number of musical tone generation channels to which pitch data is assigned based only on the magnitude of the pitch, it is also conceivable to consider the currently set ft data and determine the number. This will be explained in detail below.

A 70-chart of Example 4 FgJI is shown. This flow is started when it is time to determine whether to process the slag, and first it is determined whether or not the corresponding door has been pressed (step Kl). If the key is not pressed, prepare to judge the next key, and if the scanning for all Korean parts is not completed (step 2, step 3), the key currently being scanned is pressed again. Determine if there are any. If the key has been pressed, press step 8 (step 4 to determine whether the volume data set with the volume switch in the Sl is less than a predetermined value) and select ``YES''.
When it is determined that the key is J, it is further determined whether the pressed key is on the bass side of the predetermined part (step 5). 5 for this step
When it is determined that -YhiSJ, the musical tone generation section 2c assigns two musical tone generation channels n+ and generates a musical tone (step 6, step K7).

When the backstitch data is above the predetermined value, or even if the front stitching data is below the predetermined value, if the pressed pitch is above the predetermined pitch,
Only one musical tone generation channel is applied to the V switch 1 to generate musical tone (step 8, step 7).

Note that the tone generation channel used only for volume data may be changed.

Furthermore, the number of music generating channels to be used is not limited to two or one, but any number of livs may be used.

Furthermore, the present invention can also be applied to electronic stringed instruments and single-key wind instruments.

Furthermore, the number of musical tone generation channels to be used may be set in any number of stages.

In other words, the number of musical tone generation channels used increases as the tone goes lower.

〔Effect of the invention〕

In this invention, the number of music-Fr generation channels to be used is determined according to the pitch or the acoustics, so there is no need to add new external equipment, and the Vr on the bass side of the musical tone is In addition to performing filter correction, it is possible to not only simply increase the volume, but also obtain a musical tone with rich characteristics.

[Brief explanation of the drawing]

Fig. 1 is an overall circuit configuration diagram of an electronic musical instrument according to an embodiment of the present invention, Fig. 2 is a data format of bass pattern data, Fig. 3 is a flowchart showing the operation of the embodiment, and Fig. 4 is another embodiment. 3 is a flowchart showing the operation of FIG. 1α...Selection key, 1b...Stop key 2...Cpt, I, 4...Rhythm pattern ROM. 2b...Register section, 2C...Music tone generation section. 6bit Figure 2

Claims (2)

[Claims] (1) In an electronic musical instrument that has multiple musical sound generation channels and generates musical sounds based on pitch data assigned to the musical sound generation channels, the number of musical sound generation channels allocated to one pitch data is: An electronic musical instrument characterized by comprising a musical tone generation channel allocation control means that arbitrarily sets according to pitch. (2) In an electronic musical instrument that has multiple musical sound generation channels and generates musical sounds based on musical sound data assigned to these musical sound generation channels, input and set the number of musical sound generation channels to be assigned to one musical sound data. 1. An electronic musical instrument, characterized in that the electronic musical instrument is equipped with a musical tone generation channel allocation control means that arbitrarily sets musical tone generation channel allocation according to volume data.