JPH0453440B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to an angle sensor that outputs a detection signal corresponding to a tilt angle from a reference posture, and in particular, to an angle sensor that outputs a detection signal corresponding to a tilt angle from a reference posture. The present invention relates to an angle sensor suitable for application to electronic musical instruments that produce various musical tones.

``Prior Art'' As is well known, in electronic keyboard instruments, a performer specifies the desired pitch and timbre by operating the keyboard and various tone control operators with his or her hands or feet to create music. I'm learning to play.

``Problems to be Solved by the Invention'' By the way, in the conventional electronic keyboard instruments mentioned above, it is not possible to specify the pitch other than by pressing the keys with hands or feet, and the methods of playing music are limited. was.

This invention was made in view of the above-mentioned circumstances. For example, when held in the hand and tilted from a reference posture, a detection signal corresponding to the tilt angle is generated, and a musical tone is controlled according to this detection signal. The aim is to provide electronic musical instruments that

"Means for Solving the Problems" The present invention includes a hollow case, a plurality of contacts provided inside the case, and a plurality of contacts that are enclosed within the case and move according to the inclination of the case. and comprising an angle detecting means comprising a conductive fluid that conducts between any one of the plurality of contacts, and a musical tone controlling means controlling a musical tone according to a detection result of the angle detecting means. It is characterized by

"Function" According to the above configuration, the conductive fluid always moves downward and conducts between the contacts located below, so that the angle detection means generates a detection signal according to the inclination angle of the case, and the musical sound is generated. By controlling, for example, the pitch of the musical tones based on this detection signal, the control means can generate various musical tones in accordance with the movement of the hand holding the case.

"Embodiments" Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 to 5 are diagrams showing the configuration of an angle sensor 1 according to this embodiment.

In these figures, 2 is a spherical hollow case, and at predetermined locations on the outer peripheral surface of this case 2, there is a circular mark 3 serving as a reference, and arrow marks 3a to 3d extending in all directions around this circular mark 3. It is depicted. On the other hand, there is a line in the X direction on the inner peripheral surface of case 2.
X ₁ to X ₈ and Y direction lines Y ₁ to _{Y 16} are arranged in a grid pattern (see Figure 6), and each of these X direction lines X ₁ to
A detector 4 is provided at each location where X ₈ and the Y direction lines Y ₁ to Y ₁₆ intersect with each other. As shown in FIG. 4, this detector 4 is configured to have a pair of contacts 5a and 5b on the front side and a diode (not shown) inside, and as shown in FIG. , the contact 5a is connected to the X-direction lines _X1 to _X8 , and the contact 5b is connected to the Y-direction lines _Y1 to _Y16 via a diode 6. Furthermore, as shown in FIG. 3, mercury 7 is sealed inside the case 1, and the contacts 5 of each detector 4 are
Conductivity is established between a and 5b. Each of the X direction lines X ₁ to X ₁₆ and Y direction lines Y ₁ to _{Y 8} are
It is guided to the outside by a cable 8 (see Figure 1).

The angle sensor 1 configured as described above is
Hold it in your hand H as shown in the figure, and point that hand H at the arrow A.
If you raise or lower it in the direction of arrow B or twist it in the direction of arrow B,
Since the mercury 7 in the case 2 always moves downward,
The detector 4 which is electrically connected via the mercury 7 changes depending on the inclination of the angle sensor 1. Therefore, the combination of detectors 4 that are in a conductive state is
By detecting the conductivity between the direction lines X ₁ to X ₈ and the Y direction lines Y ₁ to _{Y 16} , the tilt angle of the angle sensor 1 in the arrow A direction and the tilt angle in the arrow B direction can be determined. can be detected.

Next, the angle sensor 1 according to the embodiment described above will be described.
The case where this is applied to an electronic musical instrument will be explained with reference to FIG.

In this figure, 9 is a resistor that pulls down the X direction lines _X1 to _X8 , and 10 is the output port PA and PB to which the Y direction lines _Y1 to _Y16 are connected, and the X direction line _X1.
- An input/output interface having an input port PC to which used as an area
RAM (Random Access Memory) 14 is a bus line, and the above-mentioned components 9 to 14 constitute a tone generation control circuit 15.
The CPU 11 sequentially sets only one bit of each bit PA0 to PA7 and PB0 to PB7 of the output ports PA and PB of the input/output interface 10 to "H" level, and correspondingly sets each bit PC0 of the input port PC to the "H" level. By monitoring the "H" level signal supplied to PC7, it is possible to detect which of the detectors 4 is in a conductive state. Further, the CPU 11 determines the inclination angle of the angle sensor 1 in the direction of arrows A and B based on the conduction state of each detector 4, creates musical tone control data KC with contents corresponding to this inclination angle, and The signal is supplied to the musical tone forming circuit 16 via the signal line 14.
The musical tone forming circuit 16 uses the supplied musical tone control data.
The musical tone signal outputted from the musical tone forming circuit 16 is supplied to the sound system 17, and is generated as a musical tone.

In such a configuration, when the angle sensor 1 is in a state with the circle mark 3 facing upward as shown in FIG.
7 is pronounced, and from this state, if you raise and lower hand H in the direction of arrow A or twist hand H in the direction of arrow B,
The pitch varies in accordance with this.

As described above, when the angle sensor 1 according to the embodiment of the present invention is applied to an electronic musical instrument, musical instruments with various pitches can be generated depending on the inclination of the angle sensor 1. When held and moved in the hand, various musical tones can be generated in response to the movements of the hand, providing an enjoyable musical experience through a completely new playing method that cannot be achieved with conventional electronic musical instruments. be able to. In addition,
The pitch of the musical tone may be changed according to the tilt angle of the angle sensor 1 in the direction of arrow A, and the volume of the musical tone may be changed according to the tilt angle of the angle sensor 1 in the direction of arrow B.
Further, the configuration may be such that the timbre of the musical tone or the like changes depending on the inclination angle of the angle sensor 1.

Next, another embodiment of the present invention will be described with reference to FIG. In this figure, the difference from the above-described embodiment is that a contact 20 is provided on the inner peripheral surface of the case 2 instead of the detector 4;
The point is that a spherical common electrode 21 is provided inside the hollow part. As a result, the common electrode 21
The combination of contacts 20 that are electrically connected to each other changes depending on the inclination angle of the case 2.

In the above-described embodiment, the case 2 is spherical, but the shape of the case 2 is not limited to a spherical shape, and may, for example, be a hollow cylinder.

"Effects of the Invention" As explained above, according to the present invention, a hollow case, a plurality of contacts provided inside the case, and enclosed within the case,
Angle detection means comprising a conductive fluid that moves according to the inclination of the case and is conducted between any one of the plurality of contacts, and generates a musical tone according to the detection result of the angle detection means. Since the conductive fluid is always moved downward and conduction is established between the contacts located below, the angle detection means generates a detection signal according to the tilt angle of the case. The musical tone control means controls, for example, the pitch of the musical tone based on this detection signal. This makes it possible to generate various musical tones depending on the movement of the hand holding the case.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the external configuration of an angle sensor 1 according to an embodiment of the present invention, FIG. 2 is a partially cutaway perspective view of the angle sensor 1, and FIG. 3 is a sectional view of the angle sensor 1. FIG. 4 is a perspective view showing the configuration of the detector 4 of the angle sensor 1, FIG. 5 is a circuit diagram showing the electrical configuration of the detector 4, and FIG. 6 is the angle sensor 1 according to an embodiment of the present invention. FIG. 7 is a block diagram showing the structure when applied to an electronic musical instrument, and FIG. 7 is a sectional view showing the structure of another embodiment of the invention. DESCRIPTION OF SYMBOLS 1... Angle sensor, 2... Case, 4... Detector, 5a, 5b, 20... Contact, 7... Mercury (conductive movable fluid), 21... Common electrode.

Claims (1)

[Scope of Claims] 1. A hollow case, a plurality of contacts provided inside the case, and a device that is enclosed in the case and moves according to the inclination of the case, and that the plurality of contacts An electronic musical instrument comprising: an angle detecting means comprising a conductive fluid that conducts between any of the contacts; and a musical tone controlling means controlling a musical tone according to a detection result of the angle detecting means.