JPS60211497A - Electronic musical instrument - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Industrial applications The present invention relates to electronic musical instruments.b(I)'C: Yes.

Conventional configuration and its problems In recent years, electronic musical instruments have been equipped with waveforms sampled from the musical instruments of -1 in the memory, and the waveforms are read out according to the key pressed on the -1 keyboard. It is being done to issue f1/i.

A conventional musical tone generator using a waveform melody similar to that used in electronic musical instruments will be explained with reference to FIG.

1 is a keyboard, 2 is a control section, and this ii'l 111 section 4 scans the keyboard 1 and controls the continuous output means 3. The reading means 3 sends out the address. 15.4 is the waveform main line, 5 is the D/A:1 inverter and amplifier, and E) Lt.
It's a speaker.

The control unit 2 presses the keyboard 1 and determines the position of the keyboard 1 when pressed /, = # t, reads 110, and sends the data of the music release 11 to the f stage 3. One after another 17° 1st step 3rd waveform merry 4k
Send the l address and read out the predetermined waveform 1. In this case, set the r4 frequency corresponding to the pressed key and the read speed on each wl board fo (Jre I note clock According to the change, the waveform
The waveform data number read from 1. - (That 11 goo 20 $ c
λ is amplified, and a musical tone is output from the Subi h-6. .

However, in general, the center f-I of keyboard 1, the f-I of MF,
Since the waveform of cul-2- is stored in the waveform memory 4 and read out by changing the clock, with this configuration, the tone becomes poor in the range near both the left and right ends of the keyboard 1, making it difficult to use musically. It had some problems.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks, and aims to provide an electronic musical instrument that can produce excellent tone in all ranges of the keyboard.

Structure of the Invention In order to achieve the above object, an electronic musical instrument of the present invention includes at least one waveform memory means for storing a plurality of different waveforms, and a plurality of reading means for reading out a plurality of waveforms from the waveform memory means. and a plurality of multipliers provided corresponding to the plurality of waveforms read out by the readout means, each of the plurality of waveforms read out from the waveform memory means by the N1 readout means. ,
The multiplication means performs predetermined weighting according to the range of musical tones to be generated.

According to this configuration, by changing the weighting of the waveform depending on the -3- position of the keyboard, it is possible to generate a musical tone with a good tone at any key position.

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

FIG. 2 is a block diagram of an electronic musical instrument according to an embodiment of the present invention, in which 7 is a keyboard and 8 is a control section. and controls the weighting value memory 12. 13 to 15 are waveform memories, 16 to 18 are multipliers, 19 is an adder, and 20 is a D/
A-1 is an inverter and an amplifier, and 21 is a speaker.

Next, I will explain the operation. First, II, II Gunbu 8 key 1
117 to determine the position of the pressed key.

The control section 8 sends data corresponding to the musical scale to the reading means 9 to 11 and the weighting value memory 15. The reading means 9 accesses the first waveform memory 13 and generates a first waveform. Similarly, the reading means 10 and 11 access the second and third waveform registers -14 and 15, respectively, and generate the second and third waveforms. Generation-4- The generated first to third waveforms are each transmitted to the first multiplier 16.
~ is sent to the third multiplier 18. From the weighting button memory 12, the first to third weighting values are sent to the first to third multipliers 16 to 18, respectively. The first multiplier 16 multiplies the first waveform and the first weighting value and sends the result to the adder 19 . Similarly, the second multiplier 17 sends the product of the second waveform and the second weighting value to the adder 19, and sends the product of the second waveform and the second weighting value to the third multiplier 1.
8 sends the product of the third waveform and the third weighting value to the adder 19 .

The adder 19 adds the three products sent and calculates D/
The signal is sent to the A converter and amplifier 20, and the sound is output from the speaker 21. FIG. 3 shows the characteristics of each weighting value stored in the weighting value memory 12.

According to this embodiment, by having the weighting values shown in FIG. 3, the waveform changes from the first waveform to the second waveform and then to the third waveform depending on the position of the keyboard 7 as you go from the bass to the treble. You can create tones with changing waveforms. In reality, there are not many instruments whose sound range is wide enough to cover the entire keyboard. By making the waveform of an instrument sound with a low sound range, the waveform of a musical Pli sound with a medium sound range, and the waveform of an instrument sound with a high sound range into the first, second, and third waveforms, respectively, You can create one new tone. In addition, the bass, pitch, and treble of instruments with a wide range of
By combining these waveforms with the first, second, and third waveforms, it is possible to create a tone close to the original sound. In addition, in the embodiment described above, the waveforms are three, first to third, but two.
Of course, it is sufficient that the number is more than one. Furthermore, weighting value characteristics can also be freely set.

As described in detail, according to the present invention, a plurality of waveforms having weighting values corresponding to the pitches of pitch III are decorated, so that excellent tones can be obtained in all the ranges of the keyboard. Furthermore, it is possible to create new tones that change smoothly depending on the pitch range.

-6-

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a conventional electronic musical instrument, FIG. 2 is a block diagram of an electronic musical instrument according to an embodiment of the present invention, and FIG. 3 is an explanatory diagram of weighting value characteristics. 9-11...Reading means, 12...Weighting value memory, 13-15...Waveform memory, 16-1
8... Multiplier agent Yoshihiro Morimoto 7- Figure 1

Claims (1)

[Claims] 1. Storing a plurality of different waveforms +/, K<, and t
) One waveform memory means, and a plurality of waveforms read out from one stage of this waveform memory. Corresponding to the waveform, the τ step number is 1. : a plurality of multiplication means, each of the plurality of waveforms read from the waveform memory means by the readout means, and each of the plurality of waveforms read from the waveform memory means by the crushing means into a predetermined 41
・Mitsuke [An electronic musical instrument configured to perform ノ.