WO2017195390A1 - 楽音・映像発生システム - Google Patents
楽音・映像発生システム Download PDFInfo
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- WO2017195390A1 WO2017195390A1 PCT/JP2016/080487 JP2016080487W WO2017195390A1 WO 2017195390 A1 WO2017195390 A1 WO 2017195390A1 JP 2016080487 W JP2016080487 W JP 2016080487W WO 2017195390 A1 WO2017195390 A1 WO 2017195390A1
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- WIPO (PCT)
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- musical sound
- mobile communication
- video
- communication terminal
- generation system
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H1/00—Details of electrophonic musical instruments
- G10H1/0008—Associated control or indicating means
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H1/00—Details of electrophonic musical instruments
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H1/00—Details of electrophonic musical instruments
- G10H1/0033—Recording/reproducing or transmission of music for electrophonic musical instruments
- G10H1/0083—Recording/reproducing or transmission of music for electrophonic musical instruments using wireless transmission, e.g. radio, light, infrared
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H1/00—Details of electrophonic musical instruments
- G10H1/36—Accompaniment arrangements
- G10H1/361—Recording/reproducing of accompaniment for use with an external source, e.g. karaoke systems
- G10H1/368—Recording/reproducing of accompaniment for use with an external source, e.g. karaoke systems displaying animated or moving pictures synchronized with the music or audio part
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H2220/00—Input/output interfacing specifically adapted for electrophonic musical tools or instruments
- G10H2220/005—Non-interactive screen display of musical or status data
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H2220/00—Input/output interfacing specifically adapted for electrophonic musical tools or instruments
- G10H2220/155—User input interfaces for electrophonic musical instruments
- G10H2220/201—User input interfaces for electrophonic musical instruments for movement interpretation, i.e. capturing and recognizing a gesture or a specific kind of movement, e.g. to control a musical instrument
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H2220/00—Input/output interfacing specifically adapted for electrophonic musical tools or instruments
- G10H2220/155—User input interfaces for electrophonic musical instruments
- G10H2220/391—Angle sensing for musical purposes, using data from a gyroscope, gyrometer or other angular velocity or angular movement sensing device
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H2220/00—Input/output interfacing specifically adapted for electrophonic musical tools or instruments
- G10H2220/155—User input interfaces for electrophonic musical instruments
- G10H2220/395—Acceleration sensing or accelerometer use, e.g. 3D movement computation by integration of accelerometer data, angle sensing with respect to the vertical, i.e. gravity sensing.
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H2220/00—Input/output interfacing specifically adapted for electrophonic musical tools or instruments
- G10H2220/155—User input interfaces for electrophonic musical instruments
- G10H2220/401—3D sensing, i.e. three-dimensional (x, y, z) position or movement sensing.
Definitions
- the present invention comprises a musical sound / video generator having a built-in motion detection device, a mobile communication terminal installed on the motion target, and a communication device wirelessly connected to the mobile communication terminal, and the motion of the motion target Is a musical sound / video generating system that reproduces at least one of a preset musical sound and video, or reproduces at random.
- a mobile communication terminal with a built-in motion detection device that is attached to the user's body or can be carried by hand, depending on the magnitude relationship of the values in the X direction, Y direction, and Z direction, the vertical direction cutting operation, the horizontal direction
- a performance interface capable of controlling musical sounds with the main objective of analyzing musicality such as slur and staccato based on analysis of cutting, oblique cutting operation, turning operation, and the like (Patent Document 1).
- the stroke value is calculated by adding the acceleration values in the X-axis direction and the Z-axis direction, and the operation position of the string is determined in accordance with the change of the stroke value having a predetermined relationship with a plurality of predetermined threshold values.
- a sound output control device that estimates sound and controls sound output (Patent Document 3).
- the sensor composite value calculated by the CPU of the performance apparatus main body by the square root of the sum of the squares of the X-axis, Y-axis, and Z-axis component values of the first acceleration sensor value is a value corresponding to (1 + a) G.
- There is a performance device that determines whether it is loud and generates a musical sound (Patent Document 4).
- a performance device in which a stick unit performs shot detection processing and action detection processing based on motion sensor information (Patent Document 5).
- a mobile communication terminal with a built-in motion detection device sends all the information of motion detection sensors (acceleration, angular velocity, geomagnetism, etc.) to the musical sound generator side and makes the arithmetic device in the musical sound generator determine the information. Take the method. In this case, there is no problem in processing if it is a single or a small number, but for example, a large number of dancers attach mobile communication terminals with built-in motion detection devices to their arms and legs, and motion detection sensors all at once When information is sent out, it cannot be processed by the arithmetic unit on the musical tone generator side.
- a person cannot grasp his or her three-dimensional position (X, Y, Z) sensuously. Nevertheless, a musical performance sound is generated at an unintended place on a performance interface based on an algorithm constructed based on the X, Y, and Z directions.
- a human body or an operation target including the human body has a unique movement, and a mobile communication terminal including a motion detection device attached thereto must be able to individually adjust the detection level.
- many mobile communication terminals with built-in motion detection devices issue a musical tone generation request at the same time, at least one musical tone generator must answer the request.
- sound output is controlled based on a value obtained by adding two-axis acceleration values in the X-axis direction and the Z-axis direction, which is represented by a stroke value of the controller.
- the operation position of the string is calculated, and is not intended to detect the degree of movement of the motion detection device and generate a musical sound.
- the performance apparatus main body described in Patent Document 4 is based on a sensor composite value obtained by calculating the square root of the sum of the squares of the values of the X-axis, Y-axis, and Z-axis components of the acceleration sensor value.
- the sum of squares is used in the same manner as in Patent Document 1 described above, the calculation amount is large, and a musical tone may be emitted in an unintended manner.
- Patent Document 5 performs shot detection processing and action detection processing based on motion sensor information, a method for processing an acceleration sensor signal is not specifically disclosed.
- the present invention aims to solve the above problems.
- a musical sound / video generator comprising a mobile communication terminal with a built-in motion detection device and installed on an operation target, and a communication device wirelessly connected to the mobile communication terminal.
- the mobile communication terminal includes an arithmetic unit that adds an absolute value of the magnitude of motion data detected in the directions of three axes substantially orthogonal to each other by the motion detection device, and generates the sound and video
- the system includes a determination unit that determines whether or not a predetermined amount of motion is detected from a calculation result by the calculation unit, and the music / video generator generates at least a musical sound and a video according to the determination result by the determination unit. It has a musical sound / video generator that generates one.
- At least one of a musical sound and an image can be generated faithfully to the detected movement.
- FIG. 1 is a schematic configuration diagram of an entire musical sound / video generation system according to an embodiment of the present invention.
- 1 is a schematic configuration diagram of a mobile communication terminal according to an embodiment of the present invention.
- a mobile communication terminal having a built-in motion detection device mounted on an operation target is individually moved to check a detection level threshold, and the value is stored in the mobile communication terminal.
- a mobile communication terminal with a built-in motion detection device sends all the information of motion detection sensors (acceleration, angular velocity, geomagnetism, etc.) to the musical sound / video generator side and makes the calculation device determine it.
- motion detection sensors acceleration, angular velocity, geomagnetism, etc.
- the music / video generator side cannot process them. .
- the detection level threshold value it is determined whether or not the detection level threshold value has been exceeded in the mobile communication terminal incorporating each motion detection device, and the determination result is sent to the music / video generator, and the music / video generator side follows the instructions. Generate a preset (or random) musical tone.
- hardware and firmware are prepared for determining whether the detection level threshold value is exceeded independently in a mobile communication terminal incorporating the detection device.
- each of the detection level thresholds is determined by an arithmetic device in the container.
- FIG. 1 shows a musical sound / video generation system according to an embodiment of the present invention.
- the musical sound / video generation system includes a mobile communication terminal 10 incorporating a motion detection device and a musical sound / video generator 40. This is realized by various combinations of the application examples shown in (a) to (h) and the musical sound / video generators shown in (i) to (m).
- FIG. 1A shows an application example worn by a dancer. It is worn on both wrists and both ankles. The position of wearing such as the waist is not specified.
- Dance is originally danced to music, but in the present invention, a dancer can make a sound with his / her performance even without music. It is possible to collaborate with music and the sounds of dancers. Thereby, a more active dance composition can be realized and the artistry can be enhanced.
- FIG. 1 (b) shows an application example in BMX (Bicycle Motocross). Sound effects can be produced and appealed to the audience at performance and performance milestones such as jumping and rotating. Similarly, it can be used for races using motocross bikes and acrobatics such as spinning in the air.
- BMX Battery Motocross
- Fig. 1 (c) shows an example of mounting on a skateboard. When flying in the air, landing, braking and stopping, you can appeal with sound effects.
- Fig. 1 (d) shows application in surfing. You can appeal the skill to the audience watching on the beach with sound effects, such as when you get on the wave, rotate, get over the wave.
- the level of "sound” and “do not sound” can be adjusted by a collaborator on the sandy beach, so that there is no sound effect when it is not intended for the day when the wave is large or small. Can be finely adjusted.
- Direct adjustment of the level with the mobile communication terminal 10 in seawater containing salt is not preferable in terms of electronic products, and it is not practical to surf and perform a musical sound / video generator. In the same way, you can appeal with sound effects in competitions such as half pipes on the snow.
- FIG. 1 (e) shows an application example in basketball. If the player wears it on his arm, the sound of the crowd will be raised by swinging the arm just before the shot, and if it is built in the ball, if it is turning around the goal ring, it will sound like a roaring logo. If you put it out or drop the net, you can make a sound effect like a spot and entertain the audience. In freestyle basketball, you can appeal to spectators walking along the street by making sound effects by spinning the ball or bouncing. For example, in the case of soccer lifting, a sound effect is produced according to the moment when it is raised or when it is raised. Further, if the number of times of lifting is generated like One, Two, Three, etc. on the musical sound / video generation system side, the game effect increases.
- Fig. 1 (f) shows an application example to juggling. It would be interesting to incorporate a mobile communication terminal with a built-in motion detection device in a ball or club and make a sound effect according to the impact, rotation, and height.
- Fig. 1 (g) shows an application example in baseball.
- a mobile communication terminal with a built-in motion detection device is built in the ball, and the tone is changed according to the throwing speed, the number of rotations, and the direction of rotation. Even if you throw a slow ball, you can play a sound effect as if you were throwing a fast ball, or feel the impact of entering a mitt and play a sound when you receive a heavy ball like a professional baseball pitcher at 150 km / h. Increases nature.
- the right rotation, left rotation, vertical rotation, etc. can be recognized by the sound, the changing ball practice can be confirmed.
- the actual ball speed can be measured by the mounted sensor, the significance increases.
- Fig. 1 (h) shows an application example in toys. If it is a kendama, it can be built into a ball, and when playing in the air, you can play with a toy, such as rotating sound, sounding a fanfare when you get on a plate well. Yo-yo can be enjoyed with sound effects as well.
- the musical sound / video generator 40 is provided in the form of (i) a tablet PC, (j) a smartphone, (k) a notebook PC, (l) a desktop PC, (m) a dedicated machine, which is the host computer 30. .
- an external transmission / reception circuit 20 (hereinafter referred to as a dongle 20) is connected to the host computers (i) to (l) via, for example, a USB (Universal Serial Bus), a micro USB connector, or the like.
- FIG. 2 is a schematic configuration diagram of an entire musical sound / video generation system according to an embodiment of the present invention.
- n mobile communication terminals 10 with built-in motion detection devices There are 1 to n mobile communication terminals 10 with built-in motion detection devices, and one musical sound / video generator 30 reproduces musical sounds set in advance on n terminals. Depending on the product planning, the music may be played randomly.
- the mobile communication terminal 10_n includes an operation sensor MSn, a calculation unit CLn, a determination unit JDn, and a transmission / reception unit TRVn, and communicates with the dongle 20 constituting the musical sound / video generator 40 through the antenna ANTn.
- Other mobile communication terminals 10_1 ... have the same configuration.
- Wireless communication is performed according to WiFi, BlueTooth, ZigBee (all are registered trademarks) or other wireless systems. If these radio communication devices are built in the musical sound / video generator 40, the dongle 20 is not necessary.
- ZigBee and Bluetooth with a fast response speed are used from the relationship between the time until the motion sensor MSn in the mobile communication terminal 10_n senses the motion and the musical sound / video generator 40 generates the musical sound. ing.
- the dongle 20 includes a transmission / reception antenna ANTD, a transmission / reception unit TRD, and a protocol conversion unit PC, and is connected to the host computer 30 in the musical sound / video generator 40 via a connector C1 and a connector C2.
- the interface in the dongle 20 is a USB interface.
- the host computer 30 includes an arithmetic processing unit CPU and a GUI (Graphic User Interface), and a user performs musical sound allocation of each mobile communication terminal 10_n by using this.
- Music data MD and video data VD are stored in a storage device (not shown) in the host computer.
- the video data VD may be moving image data or still image data.
- both the musical sound and the video may be associated with the dancer's motion, or one of the musical sound or the video may be associated with the dancer's motion.
- Music sound may be generated when the dancer's hand movement is detected, video may be generated when foot movement is detected, music sound is generated when movement of the right or right hand is detected, and video is detected when movement of the left hand or left foot is detected. It may be generated.
- the transmission / reception unit TRVn of the mobile communication terminal 10_n Since the desired mobile communication terminal 10_n has an individual identification number, the transmission / reception unit TRVn of the mobile communication terminal 10_n that has recognized that the communication is for itself receives the data.
- the threshold of the operation detection level of the determination unit JDn is stored as a comparison value (not shown).
- FIG. 3 is a schematic configuration diagram of a mobile communication terminal 10 incorporating a motion detection device according to an embodiment of the present invention.
- the mobile communication terminal mainly gives an instruction to generate a musical sound as compared with the threshold value of the motion detection level, the CPU 1 for performing arithmetic processing is required.
- the threshold value of the motion detection level determined by the above procedure is stored in the memory MEM inside or outside the CPU by the setting unit of the CPU 1.
- the determination unit of the CPU 1 performs a predetermined calculation in the calculation unit based on the data obtained from the motion sensor MS1, and compares it with the threshold value of the motion detection level stored in the memory MEM to “generate a tone”. Or, it is determined that “no musical sound is generated”.
- the data sequence is configured according to the wireless protocol used, the RF switch RF1 is switched to the output side, and then the data sequence is transmitted to the antenna through the transmission unit TR1. Send from ANT1.
- a predetermined calculation is performed by the calculation unit of the CPU 1, and only the result is sent to the host computer 30 of the musical sound / video generator 40 and compared with a predetermined threshold by the CPU in the host computer 30. Then, it may be determined whether “musical sound is generated” or “musical sound is not generated”.
- the RF switch RF1 is switched to the input side except during transmission, and inputs a data string according to a wireless protocol used for the CPU 1 from the antenna ANT1 through the receiving unit RV1.
- the CPU 1 continually monitors the individual identification number from the data string, and when it coincides with its own number, a new motion detection level threshold value is sent from the dongle 20 of the musical sound / video generator 40.
- the threshold value is stored in the memory MEM inside or outside the CPU by the setting unit in the CPU 1.
- the motion sensor MS1 is an acceleration sensor, a gyro sensor, a geomagnetic sensor, or the like, and is mounted alone or in plural types depending on product planning.
- SW1 is a commission switch for pairing with the mobile communication terminal 10_n and the host computer in the musical sound / video generator 30.
- the individual identification number of the mobile communication terminal 10_n is stored and stored in the host computer, which musical sound is generated using the GUI of the host computer 30, what value the threshold of the operation detection level is set to, etc. Can be set.
- LED1 is a display that is turned on for operation confirmation when the data string is transmitted and received. Since the mobile communication terminal 10_n is mounted at various places as shown in FIG. 1, battery driving is essential.
- SW2 is a power switch, through which power is supplied to each circuit.
- the battery used varies depending on the product plan.
- a charging circuit may be provided inside the mobile communication terminal 10n due to product planning (not shown).
- FIG. 4 shows an example of the appearance of the mobile communication terminal 10 incorporating the motion detection device.
- the commission switch SW1, the power switch SW2, and the communication monitor indicator LED1 during transmission and reception are shown.
- FIG. 5 is a schematic configuration diagram of the dongle 20, which is a component of the musical sound / video generator 40.
- the connector C1 generally uses USB as described above.
- the USB can take out the power of +5 V and 500 mA per connector from the host computer, and is enough to cover the power of the dongle 20 as a whole.
- the power is taken out directly from the connector C1 and supplied to each part in the dongle. Only when the host computer is operating, the power switch is not provided because the dongle has a role.
- LED2 is provided to indicate that power is being supplied.
- the data string that flows from the host computer is configured according to the USB protocol, and is passed to the CPU 2 through the USB interface INT via the USB cable.
- the dongle 20 has a role of converting a data string into a radio communication protocol used.
- the CPU 2 uses the protocol conversion unit to convert the transmission from the USB protocol to the radio communication protocol protocol at the reception of the radio communication protocol to the USB protocol.
- FIG. 6 shows an example of the appearance of the dongle 20.
- the dongle 20 has a power display LED 2, a connector C1 (not visible in FIG. 6), and a cable.
- FIG. 7 shows an example in which two dancers wear mobile communication terminals with built-in motion detection devices on both arms and both legs.
- the individual identification numbers of a total of eight mobile communication terminals are stored and stored in the host computer 30 in the musical tone / video generator 40 by the method described above, and which musical tone is selected using the GUI of the host computer 30.
- the value of the threshold value of the motion detection level is set.
- the pairing of the musical sound / video switcher to the host computer 30 may be performed by storing the above-described individual identification number of the mobile communication terminal 10_n in the host computer. That is, the individual identification number of the music / video switcher is stored and stored in the host computer by the commission switch, and this is the music / video switcher by at most 1 bit in the data string according to the wireless protocol. Is recognized.
- FIG. 8B shows an example of switching between a musical tone group and a video group. Every time the tone / video switcher switch is pressed, (music group 1 and video group 1) ⁇ (music group 2 and video group 2) ⁇ (music group 3 and video group 3) ⁇ (music sound group 1 and video group 1)
- a dancer switches between a musical sound group and a video group by stepping on a switch of a musical sound / video switcher set on the floor or the ground. With this music / video switcher, dancers can compose various performances with video and music.
- the sound of the dancer A and the dancer B is switched by switching from the musical sound group 1 to the musical sound group 2, but the video is not switched and is changed to another video.
- an acceleration sensor will be described as an example.
- the absolute acceleration that is, the absolute value of acceleration
- FIG. 9 is a plot of values in the X, Y, and Z directions when a three-dimensional acceleration sensor is attached to the arm and hits up and down 10 times.
- the value on the vertical axis represents gravity acceleration mg (milli g).
- the time interval between the plotted points is the time for one round of the main loop of the microcomputer software used for the measurement. That is, the value of the three-dimensional acceleration sensor is read once in the main loop.
- the part greatly swinging downward on the left side is a case where the arm is strongly hit downward, and it can be seen that the value swings downward, downward, upward,.
- FIG. 10 is a plot of the values of each component in FIG. 9 calculated using equation (1).
- FIG. 11 is calculated and plotted using the equation (2) used in the present invention.
- FIG. 11 is a relatively gentle graph, whereas FIG. 11 has a larger amplitude and a clearer change. However, there is no significant difference between the graph waveforms of FIGS. 10 and 11 other than the amplitude.
- FIG. 12 is a plot of values in the X, Y, and Z directions when a three-dimensional gyro sensor is attached to the arm and the arm is raised and lowered up and down.
- the value on the vertical axis represents dps (Degree per Second).
- the time interval between the plotted points is the time for one round of the main loop of the microcomputer software used for measurement, as described above. That is, the value of the three-dimensional gyro sensor is read once in the main loop. It can be seen that the Z-direction component moves greatly up and down in particular.
- FIG. 13 is a plot of values calculated for each component in FIG. 12 using equation (1).
- FIG. 14 is a plot based on the calculation result of Expression 2 used in the present invention.
- FIG. 13 is a relatively gentle graph with a small amplitude
- FIG. 14 has a large amplitude and a clearer change.
- the mobile communication terminal 10 incorporating the motion detection device has a motion detection sensor (acceleration, angular velocity, geomagnetism, etc.). ) Is sent to the music / video generator. For example, if a large number of dancers wear mobile communication terminals with built-in motion detection devices on their arms and legs and send motion detection sensor information all at once, the processing unit on the musical sound / video generator side can handle it. Absent.
- the CPU 1 of FIG. 3 can use a very inexpensive microcomputer with a small number of bits several generations ago, so it is possible to provide a mobile communication terminal on the market at a low cost.
- the mobile communication terminal 10 incorporating the motion detection device must be battery-driven. In order to increase the operable time of a mobile communication terminal driven by a battery, it is important to suppress power consumption.
- a part that consumes much power in a mobile communication terminal is a radio wave transmission / reception unit. That is, if the radio wave transmitting / receiving unit is not used, the power is turned off (standby mode), and the power is turned on only when necessary, so that the power consumption can be suppressed comprehensively.
- the mobile communication terminal 10 has three main parts: motion sensors MS1, CPU1 and collective part XB.
- FIG. 15 shows one threshold value of a basic process flowchart of the CPU 1 in the mobile communication terminal 10.
- initial setting of the motion sensor MS1 (step S01), initial setting of the threshold of the motion detection level (step S02), and standby mode setting of the collective component XB (step S03) are performed. This is the initial setting.
- step S04 values in the X direction, Y direction, and Z direction of the three-dimensional acceleration sensor MS1 are read (step S04).
- the calculation unit calculates using equation (2) (step S05), and the calculation result is compared with the threshold value of the motion detection level by the determination unit (step S06).
- the standby mode of the collective part XB is canceled (step S07), and a musical sound / video generation instruction is transmitted (step S08).
- the collective part XB receives data from the host computer 30 in the musical sound / video generator 40 simultaneously with transmission.
- data is received (step S09)
- the setting unit stores new threshold data in the memory MEM of FIG. 3 (step S11).
- the assembly part XB is set to the standby mode again for energy saving (step S12), and the value of the three-dimensional acceleration sensor MS1 is read again (step S04).
- the main loop is configured as described above.
- the registration process is started by pressing the commission switch SW1.
- the CPU 1 recognizes that the SW 1 has been pressed, the CPU 1 inserts the individual identification number of the mobile communication terminal 10 in the data string according to the wireless protocol to be used, and transmits it to the musical sound / video generator 40.
- the host computer 30 in the musical sound / video generator 40 saves and stores the individual identification number, and informs the user of this through a GUI display.
- the mobile communication terminal 10_n confirms whether or not the sent individual identification number matches that of the mobile communication terminal 10_n, and stores the threshold value in the memory MEM inside or outside the CPU by the setting unit in the CPU1.
- the transmitted data is received by the dongle 20 of the musical sound / video generator 40 in FIG. 2 and sent to the host computer 30 through the protocol conversion PC.
- the host computer 30 confirms whether or not the musical sound and video have been set to the sent individual identification number, and generates the corresponding musical sound and video.
- a predetermined calculation is performed by the calculation unit of the CPU 1, and only the result is sent to the host computer 30 of the tone / video generator 40, and the CPU in the host computer 30 "generates a tone” or A method of determining “no musical sound is generated” may be used. In the case of playing a video, a method of determining “generate video” or “do not generate video” may be used.
- a predetermined time for example, 1 mm
- the amount of change in CPU is calculated using equation (3), the calculated value is compared with a predetermined motion detection level threshold, and the amount of change in the total absolute value of acceleration exceeds the predetermined threshold It is determined that "musical sound is generated".
- FIG. 16 shows changes in acceleration in the X-axis direction.
- peak B is larger than peak A, peak B exceeds threshold C, but peak A does not exceed threshold C. Comparing the rising portions of peak A and peak B, the rising portion B ′ of peak B has a greater change in acceleration per unit time than the rising portion A ′ of peak A. Therefore, it is possible to determine that “musical sound is generated” at an early timing by comparing the amount of change in the sum of absolute values of acceleration for a predetermined time with a predetermined motion detection level threshold value, and it is possible to generate musical sound and video with a small delay.
- the combined value of the acceleration of each axis may be calculated as the square root of the sum of squares, and it may be determined whether or not “musical sound is generated” based on the combined value.
- the amount of change of the composite value calculated using Equation (4) for a predetermined time is compared with a predetermined motion detection level threshold value, When the threshold value is exceeded, it is determined that “musical tone is generated”.
- a human motion may be detected using a change amount such as angular velocity or geomagnetism.
- the generation timing of the video may be determined without determining the generation timing of the musical sound.
- the generation timing of the video may be determined together with the determination of the generation timing of the musical sound.
- this invention is not limited to the above-mentioned Example, Various modifications are included.
- the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described.
- a part of the configuration of a certain embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of a certain embodiment.
- the determination unit is mounted on the mobile communication terminal, it may be mounted on a host computer (music / video generator).
- the mobile communication terminal transmits the sum of each component of the motion detection value (acceleration sensor output) to the host computer, and the determination unit of the host computer determines whether the calculation result exceeds the threshold value.
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Abstract
Description
まず説明のために、3次元の加速度センサーを例とする。3次元センサーの直交する3軸(X軸、Y軸、Z軸)の加速度を、ax、ay、azとすると、
ax<az かつay<az の場合、突き動作
az<ax かつaz<ay の場合、切り動作
az<ax かつaz<ayでさらにax<ay なら、横切り動作
az<ax かつaz<ayでさらにay<ax なら、縦切り動作
等々
のように、従来からある判断方式を止め、もっと単純な方法で動きの有無を計算させる。なお、3軸は直交していることが望ましいが、異なる方向の動きを検出できる方向であればよく、すなわち、ダンサーのどのような動きでもいずれかの軸で検出できる方向を組み合わせればよい。
楽音・映像発生システムは、動作検出装置を内蔵した移動通信端末10と楽音・映像発生器40で構成される。(a)~(h)で示される応用例と、(i)~(m)で示される楽音・映像発生器とのさまざまな組み合わせで実現される。
図1(a)は、ダンサーが装着した応用例を示す。両手首、両足首にそれぞれ装着している。腰など装着位置は特に指定しない。ダンスは、本来音楽に合わせて踊るものだが、本発明においては、音楽がなくとも、ダンサーが自らのパフォーマンスで音を奏でられる。音楽とダンサーが奏でる音とのコラボーレーションも可能である。これにより、より能動的なダンス構成を実現でき、芸術性を高めることができる。
楽音・映像発生器40は、ホストコンピュータ30である(i)タブレットPC、(j)スマートフォン、(k)ノートPC、(l)デスクトップPC,(m)専用機である等の形態で提供される。
図2は、本発明の一実施例による楽音・映像発生システム全体の概略的な構成図である。
図3は、本発明の一実施例による動作検出装置を内蔵した移動通信端末10の概略的な構成図である。
前記コミッションスイッチSW1,電源スイッチSW2、送受信時の通信モニター表示器LED1を示す。
図5は、楽音・映像発生器40の構成要素、ドングル20の概略的な構成図である。
送信時 USBプロトコル → 電波通信方式プロトコル
受信時 電波通信方式プロトコル → USBプロトコル
に変換する。
図7は、ダンサー2人が、両腕、両足にそれぞれ動作検出装置を内蔵した移動通信端末をつけた例である。この場合、計8個の移動通信端末の個別識別番号を、前述した方法で、楽音・映像発生器40内のホストコンピュータ30内に保存記憶され、前記ホストコンピュータ30のGUIを使って、どの楽音を発生させるのか、動作検出レベルの閾値をどの値にするのかなどの設定を行う。
本発明の請求項1によれば、動作センサーデータの大きさを加算する演算部を有することを特徴とする。
動作検出装置を内蔵した移動通信端末10は、前述したようにバッテリー駆動が必須である。バッテリーで駆動される移動通信端末の動作可能時間を増やすためには、消費電力を抑えることが重要となる。
図15に該移動通信端末10内のCPU1の基本処理フローチャートの一閾値を示す。図3、図4の電源スイッチSW2が入ると、CPU1が動き出し、図15のフローチャートの順に処理を始める。
前述したように、登録処理はコミッションスイッチSW1を押すことにより開始される。CPU1は、該SW1が押されたことを認識すると、使用する無線方式のプロトコルに従ったデータ列の中に、移動通信端末10の個別識別番号をはめ込み、楽音・映像発生器40に送信する。楽音・映像発生器40内のホストコンピュータ30は、その個別識別番号を保存記憶し、GUI表示にてその旨をユーザーに知らせる。
楽音・映像発生の判断基準となる閾値データは、ホストコンピュータ30のGUI操作等によって行われる。ユーザーは、GUI画面を操作して閾値データ設定画面に切り替え、閾値を決定する。その閾値データは、対象とする移動通信端末の個別識別番号と共に、使用する無線方式のプロトコルに従ったデータ列に組み込まれ、図2のドングル20の送受信アンテナANTD、移動通信端末10_nの送受信アンテナANTnを通じて入力される。
前述したように、図3のCPU1の判断部は、動作センサーMS1より得られたデータをもとに演算部にて所定の演算を行い、メモリMEMに保存された動作検出レベルの閾値と比較して、"楽音を発生する"または"楽音を発生しない"を判断する。映像を再生する場合は、"映像を発生する"または"映像を発生しない"を判断する。その判断結果は、個別識別番号と共に使用する無線方式のプロトコルに従ったデータ列に組み込まれ、送受信アンテナANT1より送信される。
次に加速度の別の検出例を説明する。前述した実施例では、3軸の加速度値の絶対値の和で、人の動きを検出したが、以下に説明する変形例では加速度の変化量によって人の動きを検出する。
Claims (6)
- 動作検出装置を内蔵し、動作対象物に設置された移動通信端末と、該移動通信端末と無線で接続された通信装置を有する楽音・映像発生器からなる楽音・映像発生システムであって、
前記移動通信端末は、前記動作検出装置が略直交する3軸の方向において検出した動きデータの大きさの絶対値を加算する演算部を有し、
前記楽音・映像発生システムは、前記演算部による演算結果から所定量の動きが検出されたか否かを判断する判断部を有し、
前記楽音・映像発生器は、前記判断部による判断結果に従って、楽音および映像の少なくとも一つを発生する楽音・映像発生部を有する楽音・映像発生システム。 - 請求項1に記載の楽音・映像発生システムであって、
前記判断部は、加速度、角速度及び地磁気の少なくとも一つにおいて検出された動きデータの大きさの絶対値の和が所定の基準値を超えたことによって、前記所定量の動きが検出されたかを判断することを特徴とする楽音・映像発生システム。 - 請求項1に記載の楽音・映像発生システムであって、
前記移動通信端末は、
前記判断部と、
前記判断部による判断結果を送信する送信部とを有し、
前記楽音・映像発生器は、前記移動通信端末から判断結果を受信する受信部を有することを特徴とする楽音・映像発生システム。 - 請求項3に記載の楽音・映像発生システムであって、
前記移動通信端末は、前記判断部による判断の基準値を設定する設定部を有し、
前記楽音・映像発生器は、前記設定部に設定される基準値の入力を受け付け、前記移動通信端末に送信することを特徴とする楽音・映像発生システム。 - 請求項3又は4に記載の楽音・映像発生システムであって、
各々が一意の識別情報が付与された複数の前記移動通信端末を含み、
前記送信部は、前記判断結果と共に前記識別情報を送信し、
前記楽音・映像発生部は、前記判断部による判断結果に従って、前記識別情報に対応して設定された楽音を発生することを特徴とする楽音・映像発生システム。 - 請求項1に記載の楽音・映像発生システムであって、
前記判断部は、検出された加速度、角速度及び地磁気の少なくとも一つにおいて検出された動きデータの所定の時間における絶対値の和の変化量が所定の基準値を超えたことによって、前記所定量の動きが検出されたかを判断することを特徴とする楽音・映像発生システム。
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TW105136999A TWI618048B (zh) | 2016-05-13 | 2016-11-14 | Music and video production system |
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Cited By (2)
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EP3739568A4 (en) * | 2018-01-08 | 2021-08-11 | Roland Corporation | TRANSMITTER FOR MUSICAL INSTRUMENT AND MODE SWITCHING PROCEDURE FOR IT |
US11167206B2 (en) | 2019-05-22 | 2021-11-09 | Casio Computer Co., Ltd. | Portable music playing game device |
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WO2019202718A1 (ja) * | 2018-04-19 | 2019-10-24 | ローランド株式会社 | 電気楽器システム |
CN111803904A (zh) * | 2019-04-11 | 2020-10-23 | 上海天引生物科技有限公司 | 一种舞蹈教学练习装置及方法 |
US11563504B2 (en) * | 2020-06-25 | 2023-01-24 | Sony Interactive Entertainment LLC | Methods and systems for performing and recording live music using audio waveform samples |
GB2611021A (en) * | 2021-08-27 | 2023-03-29 | Little People Big Noise Ltd | Gesture-based audio syntheziser controller |
TWI825576B (zh) * | 2022-01-28 | 2023-12-11 | 中華電信股份有限公司 | 實現線上異地同步合奏之協作系統、方法及電腦可讀媒介 |
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US20180286366A1 (en) | 2018-10-04 |
TW201740365A (zh) | 2017-11-16 |
WO2017195343A1 (ja) | 2017-11-16 |
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