JP2007156370A - Electronic musical instrument using real image displayed in space as input index - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To display indices in a space corresponding to each scale and rhythm position so that they are seen from a player, in an electronic musical instrument played by motions of a hand and fingers in the space. <P>SOLUTION: The indices of a scale and a rhythm are displayed as an real image in a space using an image display device and an image-forming optical system, and non-contact sensors of which the detecting positions are made to match those respective indices are provided so that the scale and rhythm signals are outputted, and they are inputted to the electronic musical instrument when the player touches each index. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

    The present invention relates to an electronic musical instrument using a real image displayed in a space as an index of a scale or rhythm.

    Conventionally, theremin has been known as a musical instrument that performs with the movement of hands and fingers in space, and has been used by taking advantage of its show effect.

    However, these conventional musical instruments have the disadvantage that performance is very difficult and accuracy cannot be obtained because there is no visual index such as a scale in the space.

    The above-mentioned electronic devices that perform with the movement of hands and fingers in the space described above are difficult and inaccurate because the indicators of the scale and rhythm required for performance are not visible in the space. . An object of the present invention is to solve such a conventional problem and to make performance easy and accurate by visualizing an input index such as a key.

    In an electronic musical instrument that performs with the movement of hands and fingers in space, the present invention displays an image of a real image that serves as an index of the position of each scale or rhythm in a space so that it can be viewed by the player using an imaging optical system. When a hand or finger is positioned at the display position of the real image of each index, a non-contact type sensor is provided to detect it and output a signal, and the input from each sensor is connected to an electronic musical instrument circuit. Generate voice and rhythm to function as a musical instrument. The performer performs a performance by placing the viewpoint at a position where the real image is visible and touching the real image in space.

    According to the present invention, in an electronic musical instrument that is played with the movement of the position of a hand or finger in space, the scale and rhythm indicators are visualized and displayed as images in the space. It is possible to know the exact position to be placed and to perform easily and accurately. Further, since the index image is not visible to the direction other than the performer, for example, from the audience, the audience feels that the performer freely moves his / her fingers in a space where there is nothing and the show effect is high.

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

    A display screen 1 of the image display device is displayed as a real index image 3 in space by an imaging optical system 2 using a convex lens or a concave mirror. The index image 3 can be easily observed from the viewpoint 4 in the extending direction of the optical axis of the imaging optical system. The index image 3 can be both a moving image and a still image. However, if the moving image is a moving image, the design and color can be changed, which is more effective.

    Next, when the performer touches the index image 3 in the space with the finger 5, a sensor for detecting the position is provided. For example, if the shape of the keyboard is used for the pattern of the index image 3, when the player's finger 5 is placed at the position "do", the light beam 7 emitted from the light emitting unit 6 of the sensor 5 is blocked by 5 and cannot reach the light receiving portion 8 of the sensor, and an output signal is output from the light receiving portion 8 of the sensor.

The sensor is provided for each component of the index image, in this example for each scale, and the output signal of the sensor for each scale is connected to the electronic musical instrument circuit 9, and the electrical output of the electronic musical instrument circuit 9 is converted into sound by the speaker 10. Sounds.

    If the sensor light is infrared light, it can be made invisible and the sensor is not noticed. The sensor may be a non-contact type and can be other than the photoelectric type.

    The number of scales can be increased by changing the sensor arrangement from the unidirectional line shape of Fig. 1 to a vertical matrix shape, and various musical effects such as tone selection and rhythm selection as well as scale input. If assigned to, it can be made more complex and sophisticated as a musical instrument.

    If the entity frame 11 is provided around the index image 3 on the same plane as the index image, the eye can be easily focused on the index image 3 which is a real space image, and the visibility is improved.

    It is the sketch which showed the component of the electronic musical instrument of this invention.

Explanation of symbols

1. 1. Display screen of image display device 2. Imaging optical system 3. Index image in space 4. Player's point of view Performer's finger 6. Light emitting part of sensor 7. Light emitted from the light emitting part of the sensor 8. Light receiving part of sensor Electronic musical instrument circuit 10. Speaker 11. Frame provided around the index image

Claims (1)

  In an electronic musical instrument that plays with the movement of fingers or hands in space, an image that serves as a scale or rhythm index is displayed on the display screen of the image display device, and is displayed as a real image in space using an imaging optical system. However, when a player touches a desired index of the index image displayed in the space, a sensor corresponding to that index is provided. The device is configured to send a signal to the electronic musical instrument circuit from which the scale and rhythm sound assigned to the indicator is output.

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