JP2551065B2 - Music control device - Google Patents

Description

The present invention relates to a musical sound control device capable of controlling musical sounds by human motion.

"Prior Art" Natural musical instruments generally make sounds by playing strings, keyboards, or playing tubes. Also, many electronic musical instruments
A musical sound was generated by playing the keyboard.

"Problems to be Solved by the Invention" By the way, if a musical sound can be generated based on a natural human motion, it is possible to perform a performance without leaving the feeling of "playing" in a conventional musical instrument. You can enjoy the performance and create new performance effects.

However, in the past, there was no musical instrument that deviated from the concept of playing, and therefore there was a demand for the development of a new musical tone control device.

In this case, for example, if a musical tone can be controlled based on the movement of a hand or foot when a person is exercising or dancing, the musical tone control according to these movements can be performed separately from the act of playing an instrument. You can do it without being aware of it.
Furthermore, if the extracted motion can be arbitrarily changed for each part of the hand, foot, neck, etc., the variation of the musical sound variation can be widened, and the performance effect can be dramatically improved.

The present invention has been made in view of the above circumstances,
It is an object of the present invention to provide a musical tone control device that can control musical tones according to the movements of a human hand or foot, and can arbitrarily change a portion from which a motion is extracted. .

"Means for Solving the Problems" In order to solve the above problems, the present invention attaches to a fixed band that is attached to a part of the human body, and is detachably attached to the fixed band by a planar fastener. An acceleration sensor,
When the output signal output from the acceleration sensor is compared with a predetermined level set in advance, and the output signal exceeds the predetermined level, the key-on signal output means for outputting a key-on signal and the acceleration sensor output And a peak detecting means for detecting a peak value of the output signal for outputting a musical tone generation signal for generating a musical tone by the key-on signal, and a mode of the musical tone generated corresponding to the peak value. It is characterized in that it outputs a control signal for controlling.

"Action" The fixed band is attached to an arbitrary part of the human body, and further, the acceleration sensor is detachably attached to the fixed band by the surface fastener, so the movement of the part to which the fixed band is attached is extracted, and Since the musical sound is controlled based on the movement, it is possible to diversify the performance form. Also,
If the fixing bands are attached to a plurality of parts of the player in advance, the mounting position of the acceleration sensor can be changed in an extremely short time.

Furthermore, the motion of the human body is detected by an acceleration sensor,
Since the musical sound is controlled based on it, the generation mode of the musical sound is changed at the time when the acceleration is most likely to take the maximum value even in the motion of the human body such as when the human motion starts or stops. Therefore, it is possible to further enhance the sense of unity by human motion and performance. By making the movements of human beings and the performance more integrated, it becomes very clear that the performer controls the performance by their own movements, and it is easy to get the rhythm and perform ensemble with other musical instruments. It will be easier.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an external view showing the configuration of an embodiment of the present invention. In the figure, reference numeral 1 denotes an ankle supporter, which is composed of a band-shaped and annularly formed cloth, and a plurality of rubbers arranged along the longitudinal direction in the cloth. When the supporter 1 is attached to the ankle 2, its position is fixed by the contracting force of the internal rubber. A box-shaped holder 3 is attached to the surface of the supporter 1.
The holder 3 is a base portion directly attached to the supporter 1.
3a (see FIG. 2) and a storage portion 3b (see FIG. 3) fixed to the upper surface of the base portion 3a and storing the acceleration sensor.

Here, FIGS. 2A, 2B, and 2C are a plan view, a front view, and a side view of the base portion 3a, respectively. The same figure (a)
As shown in FIG. 3, the base portion 3a has a rectangular shape in a plane and has holes 5,
6 is open. The upper surface of the base portion 3a is a joint surface with the supporter 1, and its shape is such that it smoothly inclines from both ends so that the meat pressure at the center becomes thin, as shown in FIG. There is. By this inclination, it becomes possible to wear along the ankle or the like.

Next, the storage portion 3b, FIG. 3 (b), and a lid body 3b ₂ Metropolitan shown in FIG casing 3b ₁ shown in (c) (ii). The interior of the casing 3b ₁ is substantially a void, but narrow void portions 7 and 8 are formed in the portions spaced apart from the left end and the right end by a predetermined distance, respectively. An acceleration sensor 10 is attached to the narrow void portion 8, and the tip of the acceleration sensor 10 reaches the position of the narrow void portion 7. The narrow space 7 prevents the acceleration sensor 10 from being shaken excessively and damaged. Acceleration sensor 10
Is a stretched portion 10a that has a predetermined mass and bends according to the applied acceleration, and a strain gauge 10b that detects the degree of bending.
The output signal of the strain gauge 10b is taken out by the lead wire 11. The lead wire 11 is adapted to be drawn to the outside from a hole 12 formed in the side surface of the casing 3b ₁ . Further, the casing 3b _1, holes 12 and 13 corresponding to the holes 5 and 6 of the base portion 3a are opened.

The lid 3b ₂ is formed in a flat plate shape and has protrusions 15 and 16. The protrusions 15 and 16 respectively penetrate the holes 12 and 13 when the casing 3b ₁ is closed by the lid 3b ₂ , and further penetrate the holes 5 and 6. That is, the lid 3b ₂ , the casing 3b _1, and the base 3a are integrally fixed by the protrusions 15 and 16.

FIG. 4 is a block diagram showing the electrical configuration of this embodiment.

The tone processing circuit 17 shown in this figure is a circuit configured separately from the holder 3. First, 18 is a comparison circuit, which is a key-on signal when the output signal Sa of the acceleration sensor 10 exceeds a threshold value output from the threshold circuit 19 (a signal output when a key is turned on in a keyboard instrument). Signal corresponding to the) KON is generated. Reference numeral 20 is a peak detection circuit that detects the peak value of the signal Sa and outputs a voltage signal (or current signal) LVL corresponding to this detection value. The peak detection circuit 20 is adapted to be reset immediately after the peak is detected, in preparation for the next peak detection. Also,
The output signal Sa of the acceleration sensor 10 is supplied to the comparison circuit 18 and the peak detection circuit 20 by a code or wirelessly.

Next, 21 is an A / D converter (analog / digital converter)
And the signal LVL is converted to a digital signal and the register 22
Supply to. Reference numeral 23 is a register for temporarily storing the key-on signal KON. Reference numeral 25 is a CPU (central processing unit) that controls each part of the apparatus, and 26 is a memory in which programs used in the CPU 25 and various data are stored. CPU2
The numeral 5 is designed to sequentially scan and read the contents of the registers 22 and 23, and reset the registers when the contents are read.

A tone generator 27 generates a tone signal based on the key-on signal KON and the signal LVL supplied via the CPU 25. That is, the tone generation timing and tone volume are controlled based on these data.

Next, the operation of this embodiment having the above-described configuration will be described.

First, the player wears the supporter 1 at an arbitrary position on the ankle. Then, actions such as stepping and kicking are performed arbitrarily or in accordance with dance choreography. In this way, when the player's foot moves, the acceleration in this movement is detected by the acceleration sensor 10, and the signal Sa corresponding to the acceleration is output. Then, when the signal Sa exceeds the threshold value, the key-on signal KON is output, and the signal LVL corresponding to the peak of the signal Sa is output. As a result, the tone generator 27 generates a tone signal having a volume corresponding to the signal LVL at the timing when the key-on signal KON is output.

Although the supporter 1 is attached to the ankle in the above-described embodiment, it may be attached to the wrist as shown in FIG. If the diameter of the supporter 1 is changed, the supporter 1 can be attached to the head, the upper arm, the knee or the like.

Further, as shown in FIG. 6, the supporter 1 and the holder 3 may be detachably configured by the sheet fastener 30.
With this configuration, the holder 3 can be appropriately attached to an arbitrary supporter. For example, a large number of supporters 1 having different colors are prepared, and the desired color can be selected in view of the visual effect at each time. It can be attached to the supporter 1. In general, the supporter 1 needs to be washed because it easily absorbs sweat and is easily soiled, but if the holder 3 cannot be removed, it will be difficult to wet the electric parts such as the acceleration sensor. However, if it is removable as shown in FIG. 6, the holder 3 can be removed for washing.

FIG. 7 is a diagram showing a usage example of the above-mentioned embodiment, and FIG.
When the musical sound processing circuit 17 shown in the figure is housed in the casing 30 on the belt, there is an advantage that the movement becomes easy. in this case,
The tone processing circuit 17 is preferably provided with an interface circuit that outputs a tone control signal according to the MIDI standard, in place of the tone generator 27.

[Advantages of the Invention] As described above, according to the present invention, the fixed band that is attached to a part of the human body, the acceleration sensor that is detachably attached to the fixed band by the sheet fastener, and the acceleration An output signal output from the sensor is compared with a preset predetermined level, and when the output signal exceeds the predetermined level, a key-on signal output means for outputting a key-on signal, and an output output by the acceleration sensor A peak detecting means for detecting a peak value of a signal, outputting a musical tone generation signal for generating a musical tone by the key-on signal, and controlling a mode of the musical tone generated corresponding to the peak value. Since the control signal is output, there is an advantage that the musical sound can be controlled according to the movement of the human hand or foot, and that the portion for extracting the movement can be arbitrarily changed. Be done. Therefore, for example, it is possible to control musical tones based on the movements of the hands and feet when a person is exercising or dancing, and the musical tone control according to these movements is separately recognized for the act of playing an instrument. Not only can it be performed without performing, but the performance form can be diversified.

Also, by mounting the fixing belts to a plurality of parts of the performer in advance, it is possible to change the mounting position of the acceleration sensor in an extremely short time. Can be changed.

Furthermore, the motion of the human body is detected by an acceleration sensor,
Since the tone is controlled based on it, it is not limited to hands and arms,
It is easy to give changes to the detected values even with ankle or knee movements, and at the time when the acceleration is most likely to take the maximum value in the movement of the human body, such as when starting or stopping the human body movement, that is, at the turning point of human movement, Since it is possible to change the generation mode of the musical sound, it is possible to further enhance the sense of unity with human motion and performance. Moreover, by giving a greater sense of unity to human movements and performance, it becomes very clear that the performer controls the performance by their own movements, and it is easy to take rhythm and perform ensemble with other musical instruments. Become.

[Brief description of drawings]

FIG. 1 is an external view showing the construction of an embodiment of the present invention, and FIG.
FIG. 3 and FIG. 3 are views showing the configurations of the base portion and the storage portion of the holder shown in FIG. 1, FIG. 4 is a block diagram showing the electrical configuration of the same embodiment, and FIG. 5 is this embodiment. FIG. 6 is an external view showing an example when it is worn on the wrist, FIG. 6 is an external view showing a modification of the same embodiment, and FIG. 7 is a view showing an example of use of the same embodiment. 1 ... Supporter (fixed band), 10 ... Acceleration sensor, 18 ...
… Comparison circuit, 19 …… Threshold value generation circuit, 20 …… Peak detection circuit (above 18 to 20 is a tone control signal generation means), 30 ……
Area fastener.

Claims (1)

(57) [Claims] 1. A fixed band worn on a part of a human body, an acceleration sensor removably mounted on the fixed band by a sheet fastener, and an output signal output from the acceleration sensor is preset. A key-on signal output means for comparing with a predetermined level and outputting a key-on signal when the output signal exceeds the predetermined level, and a peak detection means for detecting a peak value of the output signal output by the acceleration sensor. And a tone generation signal for generating a tone according to the key-on signal, and a control signal for controlling a mode of the tone generated according to the peak value. Music control device.