JPH0473159B2 - - Google Patents

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. A system has been proposed in which sound is converted into an image by changing the brightness of a displayed image pattern.

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 provide a musical sound imaging device that has a simple configuration and is capable of visually expressing the melodies of musical tones produced by an electronic musical instrument or the like using a variety of images.

In order to achieve such an object, the present invention provides a first image pattern storage means that stores in advance a first image pattern representing a still image or a moving image, and an image represented by the first image pattern. a second image pattern storage means that stores in advance a second image pattern representing a still image or a moving image having a different basic image shape; and music information detection that detects a key press state and/or a setting state of a selection operator. and selecting a first image pattern stored in the first image pattern storage means and a second image pattern stored in the second image pattern storage means, respectively, based on the detection result of the detection means. an image pattern output means for reading out and outputting the image data according to the image pattern, and transmitting image data to the display means based on the read image pattern. Note that the fact that the basic shapes of the first image pattern and the second image pattern are different does not simply mean that the sizes, colors, brightness, etc. of the images are different, but that the shapes of the images themselves are different.

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 key, The key press detection circuit detects the operation of each key switch and outputs a key code signal KC corresponding to the pressed key. 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 musical tone forming circuit 2 generates 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 arpeggio 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 receives the parallel bit output TC output from the beat counter 7 and the first bit output Q of the measure 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. The count value of the beat counter 7 corresponds to one bar, and when it counts one bar, it overflows and outputs a bar pulse Ci. 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 pulse read out from the pattern memory 3 is divided into a pattern pulse P ₁ related to the accompaniment tone and a pattern pulse P ₂ related to the rhythm tone, and the pattern pulse P ₁ related to the accompaniment tone is applied to the musical tone forming circuit 2 as described above. , controls the formation of musical tone signals S indicating automatic chord tones, automatic bass tones, and automatic arpeggio tones.

Further, a pattern pulse P ₂ 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 controls the opening and closing of the output of each sound source circuit according to the rhythm pattern pulse _P2 read out from the pattern memory 3 to generate rhythm sounds. The rhythm sound signal L shown in FIG. This rhythm sound signal L is added to the musical sound signal S.

Further, the musical tone forming circuit 2 is supplied with a tone selection signal T _S output from the tone selection circuit 12.
The timbre of the musical tone signal S formed in the musical tone forming circuit 2 is set by this timbre selection signal T _S. 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 . do. 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 song idea detection section as a song information detection means, which includes a key depression state detection circuit 21 and a tempo detection circuit 2.
2. It is composed of a timbre detection circuit 23, a rhythm detection circuit 24, a tone volume detection circuit 25, an autorhythm volume 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.
Alternatively, this key press state detection circuit 21 detects whether or not legato performance is being performed based on the key code signal KC, and outputs an output signal corresponding to this detection result.
M ₁ may be output to the pattern select circuit 27. The tempo detection circuit 22 detects a tempo pulse Tp output from the tempo oscillator 10.
, and outputs a signal _M2 corresponding to the period of the tempo pulse Tp to the pattern select circuit 27. The timbre detection circuit 23 detects the operation state of the timbre selection operator provided in the timbre selection circuit 12, and selects a signal _M3 corresponding to the timbre of the musical tone signal S output from the musical tone forming circuit 2 to the pattern selection circuit. Output to 27. The rhythm detection circuit 24 detects the setting state of the rhythm selection switch provided in the rhythm selection switch circuit 9, and outputs a signal _M4 corresponding to the selected rhythm to the pattern selection circuit 27. Further, the musical tone volume detection circuit 25 detects the setting state of the volume setting volume 29 provided on the output side of the musical tone forming circuit 2, and outputs a signal M ₅ corresponding to the volume 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 M ₆ corresponding to the volume of the autorhythm sound to the pattern selection circuit 27. .
The pattern select circuit 27 selects each of the above signals.
Pattern select signal based on M ₁ to M ₆
The CH (detection signal) is output to the image file 31 (image pattern output means).

The image file 31 includes a plurality of pattern memories 3 selected and driven by the select signal CH.
1 ₁ to 31n (image pattern storage means). The pattern memory ₃₁₁ has a plurality of addresses, and each frame (image pattern) of an image of a person walking slowly is stored in each address, for example, as shown in FIG. As shown in FIG. _2b , each frame of an image of a human walking rather quickly is stored in 312, and each frame of an image of a human running rather quickly is stored in each address of the pattern memory 31n, as shown in FIG. 2c. Each frame of the image is stored individually. Each of the pattern memories 31 ₁ to 31n is provided with address signal generation circuits 32 ₁ to 32n that designate read addresses of these pattern memories and read out each frame of the image, and these address signal generation circuits 32 ₁ to 32n An oscillator that outputs clock pulses and the output pulses of this oscillator are counted, and a parallel bit signal corresponding to the count value is used as an address signal for each pattern memory 31 ₁
It is composed of counters that output signals to 31n to 31n, respectively. _The period of the output pulse of the oscillator provided in the address signal generation circuit 32 ₁ is set to be long so as to specify the address of the pattern memory 31 ₁ slowly, and
The period of the output pulse _of the oscillator provided in
The period of the output pulse of the oscillator provided in is set to the shortest so as to quickly specify the address of the pattern memory 31n. These pattern memories 31
The data read from ₁ to 31n is supplied to a display device 33 (display means), 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 configured 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 press state detection circuit 21 outputs a signal _M1 corresponding to the key press state or the presence or absence of legato performance, which is also output from the tempo oscillator 10. Based on the tempo 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. Signal _M3 is the tone detection circuit 23
A signal outputted from the rhythm selection switch circuit 9 and corresponding to the setting state of the selection switch provided in the rhythm selection switch circuit 9.
_M4 is output from the rhythm detection circuit 24, and a signal _M5 corresponding to the volume of the musical tone signal S of the musical tone forming circuit 2 is output.
is outputted from the musical tone volume detection circuit 25, a signal _M6 corresponding to the volume of the rhythm sound signal L outputted from the rhythm sound source circuit 11 is outputted from the autorhythm tone volume detection circuit 26, and the pattern selection circuit 27 The melody is determined based on the signals M ₁ to M ₆ and the select signal corresponding to this melody is selected.
Output CH. Based on this select signal CH, one of the pattern memories 31 ₁ to 31 n of the image file 31 is selected. For example, if the rhythm tempo is slow and the musical tone volume and autorhythm tone volume are low, the pattern memory 3
1 ₁ is selectively driven. At this time, since the address signal generation circuit 32 ₁ is driven, the image signals stored in each address of the pattern memory 31 ₁ are sequentially specified based on the address signal of the address signal generation circuit 32 ₁ . The display device 33 displays an image as shown in FIG. _2a based on the data (image data) read out from the pattern memory 311. In this case, pattern memory 3
Since the address of 1 ₁ 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 generation circuit 32n, the data of each address is read out, and the second display device 33 is displayed on the basis of this data.
The image shown in Figure c is displayed. In this case, since the address of the pattern memory 31n is specified quickly, the motion 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.

Note that in the above embodiment, the pattern memory 3
₁ stores an image of a human walking as shown in FIG. 3a in the pattern memory ₃₁₂ , stores an image of an animal exercising as shown in FIG. 3b in the pattern memory 312,
An image of a moving object is stored in the pattern memory 31n as shown in FIG.
Based on the select signal CH output from
It is also possible to select one of the image patterns. In this case, address signal generation circuits 32 ₁ to 32 of each pattern memory 31 ₁ to 31n
Of course, the generation cycle of the address signal output from n is set to a predetermined value depending on the content of the image stored in advance.

Further, in this invention, the image file 31
consists of a pattern memory for storing a still image pattern X and a pattern memory for storing a moving image pattern Y in an image as shown in FIG.
The designation speed of the address of the pattern memory storing the moving image pattern Y may be controlled based on the signal output from the melodiousness detection circuit 20. With such a configuration, it is possible to change the moving image according to the melody detected by the melody detection circuit 20. Furthermore, in the present invention, the image displayed on the display device 33 is not limited to the above-mentioned image, and may be any image such as a dance image, a geometric pattern image, and so on.

Furthermore, in the present invention, the image displayed on the display device 33 is changed not only by the movement of the image as in the above embodiment, but also by changing the color tone, brightness, etc. of the image based on the output of the detection circuit 20. You can do it like this. 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 image information (image selection information) supplied from the external memory, and the detection circuit 20 The image may be changed depending on the output.

Furthermore, 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, at least two image patterns having different basic shapes are stored, and each image pattern is selectively read out according to the state of the musical tone being played and sent to the display means. , it is possible to quickly read and display tasteful and timeless images for the viewer, and it is also possible to display changes, increasing the degree of freedom in visual expression of musical sounds. Even if the image is a simple image, it is possible to easily display an image that changes in accordance with changes in musical tones.

[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, Fig. 2 a, b, c, and Fig. 3 a, b, c explain the operation of the electronic musical instrument. FIG. 4 is a diagram showing another embodiment of the musical tone imaging apparatus according to the present invention. 1...Keyboard section, 2...Tone forming circuit, 3...Pattern memory, 10...Tempo pulse generator, 1
1...Rhythm sound source circuit, 12...Tone selection circuit,
9... Rhythm selection switch circuit, 20... Melody detection circuit, 21... Key depression state detection circuit, 22... Tempo detection circuit, 23... Tone detection circuit, 24...
Rhythm detection circuit, 25... Musical tone volume detection circuit, 2
6... Autorhythm sound volume detection circuit, 31... Image file, 33... Display device.

Claims (1)

[Scope of Claims] 1. A first image pattern storage means that stores in advance a first image pattern representing a still image or a moving image, and the image represented by the first image pattern has a different basic image shape. a second image pattern storage means that stores in advance a second image pattern representing a still image or a moving image; a music information detection means that detects a key press state and/or a setting state of a selection operator; An image pattern for selectively reading and outputting a first image pattern stored in the first image pattern storage means and a second image pattern stored in the second image pattern storage means, respectively, based on a detection result. A musical sound imaging device comprising: an output means, and sends image data to a display means based on the read image pattern. 2. The first image pattern or the second image pattern represents a moving image, and the image pattern output means outputs an image pattern in which the speed of image movement changes according to the detection result of the detection means. A musical sound imaging device according to claim 1, characterized in that: