JPS63170697A - Musical sound image converter - 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 The present invention relates to a musical tone imaging device, and particularly to one that controls an image pattern based on the melody of a musical tone.

Conventionally, in a record playing device, the frequency of sound generated from a speaker is detected by a filter, and the output signal of this filter is used to control an image receiving device such as a cathode ray tube, thereby determining the image pattern displayed by the image receiving device. A system has been proposed in which sound is converted into an image by changing the brightness.

However, since such a system simply changes the brightness of the image, it has the disadvantage that it provides little change to the image presented to the viewer.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned drawbacks by changing the pattern of images displayed on a display device in accordance with the melody of musical tones produced by an electronic musical instrument or the like.

In order to achieve such an object, the present invention includes a music information detection means for detecting the operator setting state or performance sound state of an electronic musical instrument, and detects an image based on an output signal from the music information detection means. In this system, one of a plurality of image patterns stored in a file is selected, and the selected image pattern is displayed on a display device.

FIG. 1 is a block diagram showing an embodiment of an electronic musical instrument incorporating a musical sound imaging device according to the present invention. In the figure, 1 is a keyboard section, and a key switch circuit consisting of key switches corresponding to each company. , detects the operation of each of the above key switches and generates a key code signal KC corresponding to the pressed key.
It consists of a key press detection circuit that outputs the following. The key code signal KC is supplied to the tone forming circuit 2. The musical tone forming circuit 2 forms and outputs a musical tone signal S corresponding to the pitch of the pressed key based on the key code signal KC. In this case, the tone forming circuit 2 uses code pattern pulses generated from the pattern memory 3.

Musical tone signals indicating automatic chord tones, automatic bass tones, automatic arpeggio tones, etc. are also appropriately formed and output using the bass pattern pulse and the albeggio pattern pulse. The musical tone signal S outputted from the musical tone forming circuit 2 is supplied to the speaker 6 via the amplifier 4, and is emitted from the speaker 6 as a musical tone.

The pattern memory 3 stores a plurality of patterns corresponding to various rhythms, and these patterns include, in addition to patterns for controlling rhythm sounds (percussion instrument sounds), chord patterns for controlling automatic chord sounds, and automatic It includes a bass pattern for controlling the bass sound, an arpeggio pattern for controlling the automatic arpeggio sound, etc., and the storage capacity of each is, for example, two measures. This pattern memory 3 is a parallel bit output T output from the beat counter 7.
0 and the first bit output Q of the bar counter 8 and a static addressing signal output from the rhythm selection switch circuit 9. The beat counter 7 is driven by a tempo pulse TP generated from a tempo oscillator 10. The tempo oscillator 10 can vary its oscillation frequency. Beat counter 7
The count value corresponds to one bar, and when one bar is counted, an overflow occurs and a bar pulse Ci is output. The measure counter 8 is driven by the overflowed measure pulse Ci, and this measure counter 8 counts the number of measures. The rhythm selection switch circuit 9 includes a plurality of switches corresponding to each rhythm, and by turning on any one of the switches, a rhythm selection signal Rn of a plurality of bits indicating the selected rhythm is generated. This rhythm selection signal Rn is added as a static addressing signal in the pattern memory 3. The pattern pulses read out from the pattern memory 3 are divided into a pattern pulse P1 related to accompaniment tones and a pattern pulse P2 related to rhythm tones, and the pattern pulse P1 related to accompaniment tones is applied to the musical tone forming circuit 2 as described above, and is applied to the automatic code. sound, automatic bass sound.

Controls the formation of a musical tone signal S indicating an automatic arpeggio tone.

Further, a pattern pulse P2 related to rhythm sound is applied to the rhythm sound source circuit 11. The rhythm sound source circuit 11 includes a plurality of sound source circuits with tones corresponding to each percussion instrument, and uses rhythm pattern pulses P read out from the pattern memory 3.
3, the output of each sound source circuit is controlled to open or close to output a rhythm sound signal indicating rhythm sound. This rhythm sound signal is added to the musical sound signal S.

Further, the musical tone forming circuit 2 is supplied with a tone selection signal TS output from the tone selecting circuit 12, and the tone of the musical tone signal S formed in the musical tone forming circuit 2 is set by this tone selecting signal Ts. It looks like this. The timbre selection circuit 12 includes a timbre selection operator consisting of a plurality of tone volume or timbre selection switches provided corresponding to each timbre, and outputs the output of each timbre selection operator as a timbre selection signal TS. . Therefore, by appropriately operating and setting each timbre selection operator, a musical tone signal S of a timbre corresponding to the setting state of the timbre selection operator can be obtained.

Reference numeral 20 denotes a melodic mood detection section, which includes a key depression state detection circuit 21, a tempo detection circuit 22. Tone detection circuit 23゜Rhythm detection circuit 2
4. Musical sound volume detection circuit 25. It is composed of an autorhythm tone detection circuit 26 and a pattern selection circuit 27. The key press state detection circuit 21 detects, for example, the key press frequency based on the key code signal KC, and outputs an output signal M1 corresponding to the key press frequency determination result to the pattern select circuit 27. Or this key press state detection circuit 2
1 may detect whether or not a legato performance is being performed based on the key code signal KC, and output the output signal M1 corresponding to the detection result to the pattern select circuit 27. The tempo detection circuit 22 has a counter circuit that counts the tempo pulses Tp output from the tempo oscillator 10, and outputs a signal M2 corresponding to the cycle of the tempo pulses Tp to the pattern selection circuit 27.

The timbre detection circuit 23 detects the operation state of the timbre selection operator provided in the timbre selection circuit 12, and generates a signal M corresponding to the timbre of the musical tone signal S output from the musical tone forming circuit 2.
, is output to the pattern select circuit 27. The rhythm detection circuit 24 detects the setting state of the rhythm selection switch provided in the rhythm selection switch 9, and outputs a signal M corresponding to the selected rhythm to the pattern selection circuit 27. Further, the musical tone volume detection circuit 25 is connected to the musical tone forming circuit 2.
It detects the setting state of a volume setting volume 29 provided on the output side of and outputs a signal M corresponding to the timbre of the musical tone signal S to the pattern selection circuit 27. The autorhythm volume detection circuit 26 detects the setting state of the volume setting volume 30 provided on the output side of the rhythm sound source circuit 11, and outputs a signal M6 corresponding to the timbre of the autorhythm sound to the pattern selection circuit 27. Above pattern select circuit 2
7 outputs the pattern selection signal CH to the image file 31 based on the above 8 signals @M1 to M. The image file 31 has a plurality of pattern memories 311 to 31n that are selected and driven by the select signal CH. Each address of the pattern memory 311 stores each frame of an image of a person walking slowly, as shown in FIG. 2(a), and the pattern memory 312 stores each frame as shown in FIG. 2(b). As shown in FIG. 2(C), each frame of an image of a person walking rather quickly is stored, and each address of the pattern memory 31n stores each frame of an image of a person running, as shown in FIG. 2(C). remembered.

Each pattern memory 311 to 31n is provided with address signal generation circuits 321 to 32n, and these address signal generation circuits 32. to 32n are oscillators that output clock pulses, and each pattern memory 311 to 31n counts the output pulses of this oscillator, and uses a parallel bit signal corresponding to the count value as an address signal.
It consists of a counter that outputs each. The period of the output pulse of the oscillator provided in the address signal generation circuit 321 is set to be long so as to slowly specify the address of the pattern memory 311, and the output pulse of the oscillator provided in the address signal generation circuit 322 is set to be long so that the address of the pattern memory 311 is specified slowly. The period of the output pulse of the oscillator provided in the address signal generating circuit 32n is set to be the shortest so as to specify the address of the pattern memory 31n rather quickly. The data read from these pattern memories 311 to 31n is supplied to a display device 33, and this display device 33 displays an image corresponding to the output data of the image file 31. Note that this display device 33 is constructed using, for example, a cathode ray tube or a liquid crystal display device.

The operation of the electronic musical instrument with the above configuration will be explained below. When the key code signal KC is output from the keyboard section 1, the key depression state detection circuit 21 outputs a signal M1 corresponding to the key depression state or the presence or absence of legato performance. Based on the pulse Tp, a signal M2 corresponding to the speed of the rhythm tempo is output from the tempo detection circuit 22, and further corresponds to the operating state of the tone selection operator provided in the tone selection circuit 12, that is, the tone of the musical tone. A signal M is output from the timbre detection circuit 23, a signal M corresponding to the setting state of the selection switch provided in the rhythm selection switch circuit 9 is output from the rhythm detection circuit 24, and a musical tone signal S of the musical tone forming circuit 2 is output. A signal M5 corresponding to the volume of the rhythm sound signal is output from the musical sound volume detection circuit 25, and a signal M corresponding to the volume of the rhythm sound signal output from the rhythm sound source circuit 11 is output from the autorhythm sound volume detection circuit 26. The pattern selection circuit 27 determines the song idea based on these signals M1 to M, and outputs a select signal CH corresponding to this song idea. Based on this select signal CH, one of the pattern memories 31. of the image file 31 is selected. to 31n are selected. For example, if the rhythm tempo is slow and the musical tone volume and autorhythm tone volume are low, the pattern memory 31,
is selectively driven. At this time, the address signal generation circuit 32
1 is driven, the image signal stored in each address of the pattern memory 311 is transmitted to the address signal generation circuit 321.
The addresses are sequentially designated based on the address signals. The display device 33 displays an image as shown in FIG. 2(a) based on the data read out from the pattern memory 311. In this case, since the address of the pattern memory 311 is specified relatively slowly, the movement of the human moving image displayed on the display device 33 becomes like walking. Further, for example, when the rhythm tempo is fast and the musical tone volume and autorhythm tone volume are set high, the pattern memory 31n is selectively driven. As a result, the addresses of the pattern memory 31n are sequentially designated by the address signal of the address signal generating circuit 32n, the data of each address is read out, and the image shown in FIG. 2(C) is displayed on the display device 33 based on this data. be done. In this case, since the address of the pattern memory 31n is specified quickly, the movement of the moving image displayed by the display device 33 becomes faster, making it possible to give an image as if a person is running.

In the above embodiment, the pattern memory 311 stores an image of a human walking as shown in FIG. 3(a), and the pattern memory 312 stores an image of an animal moving as shown in FIG. 3(b). pattern memory 31
As shown in FIG. 3(C), an image in which an object moves is stored in n, and one of the image patterns is selected based on the selection signal C)-1 output from the melodious movement detection circuit 20. It's okay. In this case, each pattern memory 3
It goes without saying that the generation cycle of the address signals output from the address signal generation circuits 311 to 32n of 11 to 31n is set to a predetermined value depending on the content of the image stored in advance.

Further, in the present invention, the image file 31 is composed of a pattern memory for storing a still image pattern X in an image as shown in FIG. 4, and a pattern memory for storing a moving image pattern Y. The designation speed of the address of the pattern memory storing the moving image pattern Y may be controlled based on the output signal. With such a configuration, it is possible to change the moving image according to the melody detected by the melody detection circuit 20. Generally speaking, in this invention,
The images displayed on the display device 33 are not limited to those described above, and may include, for example, dance images, geometric pattern images, etc.
Anything is fine.

Further, in the present invention, the display device 3
The image displayed in step 3 may change not only by the movement of the image as in the above-described embodiment, but also by changing the color tone, brightness, etc. of the image based on the output of the detection circuit 20. In this case, the image may be controlled by only one of various elements such as motion, color tone, and brightness, or by a combination of a plurality of elements.

Furthermore, an external memory such as a magnetic card is used as the image file 31, and a desired image is displayed on the display device 33 according to the image information (image selection information) supplied from this external memory, and the detection circuit 20 The image may be changed depending on the output.

Alternatively, several types of images to be displayed on the display device 33 may be prepared so that the performer can select and designate the desired image type in advance using a switch or the like.

As explained above, according to the present invention, the pattern of the image displayed on the display device is changed in accordance with the melodies of musical tones produced by an electronic musical instrument, etc.
It is possible to display an image corresponding to the performance state, and the performance effect can be further enhanced.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of an electronic musical instrument incorporating the musical sound imaging device of the present invention, and FIGS. 2(a) and (b)
, (C), Figure 3 (a), (b). (C) is a fourth diagram for explaining the operation of the electronic musical instrument.
The figure shows another embodiment of the musical sound imaging device according to the present invention. 1... Keyboard section, 2... Musical tone forming circuit,
3...Pattern memory, 10...
・Tempo pulse generator, 11... Rhythm sound source circuit, 12... Tone selection circuit, 9... Rhythm selection switch circuit, 20... Song detection circuit , 21...Key press state detection circuit, 22...
・Tempo detection circuit, 23...Tone detection circuit, 2
4... Rhythm detection circuit, 25... Musical sound volume detection circuit, 26... Auto rhythm sound volume detection circuit, 31... Image file, 33...・・・
...Display device.

Claims (1)

[Scope of Claims] A music information detection means for detecting the operator setting state of an electronic musical instrument or the state of a performer; an image file having a plurality of image patterns selected by an output signal from the music information detection means; A musical sound imaging device comprising: a display means for displaying an image based on data output from the image file; and a musical sound imaging device.