CN216527987U

CN216527987U - Virtual performance system

Info

Publication number: CN216527987U
Application number: CN202121056217.6U
Authority: CN
Inventors: 黄志坚
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-17
Filing date: 2021-05-17
Publication date: 2022-05-13
Anticipated expiration: 2031-05-17

Abstract

The utility model discloses a virtual playing system. The system comprises: a plurality of signal acquisition devices communicatively coupled to each other, configured to: in response to detecting a trigger for a virtual performance zone within a virtual performance interface, acquiring an image signal of the virtual performance zone; a memory configured to store sound source data corresponding to each virtual performance zone; a sound generator configured to output a sound signal corresponding to the sound source data; a controller configured to: receiving and processing an image signal of the virtual performance zone; acquiring sound source data corresponding to the position information according to the position information; and outputting the sound signal corresponding to the sound source data. The virtual playing system projects the playing interface of the electronic musical instrument to any plane and is provided with a plurality of signal acquisition devices, so that the playing areas of various different musical instruments are projected, and the virtual playing system is convenient for users to use.

Description

Virtual performance system

Technical Field

The present invention relates generally to the field of musical instrument performance. More particularly, the present invention relates to a virtual performance system.

Background

Conventional musical instruments are often equipped with tangible input devices such as keyboards and drumheads. At the time of performance, a person's hand or a tapping tool presses or taps on the input device, thereby causing the vibration of the vibrating material to sound. Because the input device outward appearance size of traditional musical instrument is great, for example piano keyboard width is 1.3 ~ 1.4 meters, and the keyboard width of 61 marimban can reach 2.5 meters, and in addition, traditional musical instrument all sets up the resonator body so that amplify the processing to sound usually to make the volume of traditional musical instrument bigger and inconvenient carrying and playing. In addition, due to the difference between the playing scene and the using habit, a player wants to play at a comfortable position, and the traditional musical instrument input device is fixed and clumsy and cumbersome to carry at different places, so that the playing position is limited by the traditional musical instrument, and inconvenience is brought to the player.

On the other hand, in actual playing, different types of electronic musical instruments are generally required to be played, for example, one or more of xylophone, vibrato, marimbap, electronic organ, electronic drum, chime, and gong are selectively played according to different playing scenes and places. If the instruments are carried at the same time, the whole instrument is bulky and inconvenient to carry. Further, the existing electronic musical instrument or playing system has single function and few external interfaces, and cannot be conveniently upgraded to different types of electronic musical instruments according to playing requirements, so that the requirements of players on multiple functions during playing of the musical instruments cannot be met.

SUMMERY OF THE UTILITY MODEL

To solve at least one or more of the problems of the background art described above, the present invention provides a virtual performance system. The virtual playing system projects a playing interface of an electronic musical instrument to be played, triggers corresponding positions of a playing area of the projected playing interface, acquires image signals of the triggered playing area, and outputs corresponding sound signals according to the image signals, so that the electronic musical instrument is played. In addition, the virtual playing system of the utility model can flexibly project the playing interfaces of different musical instruments, thereby conveniently realizing the playing of various types of electronic musical instruments.

Specifically, the utility model discloses a virtual performance system. The performance system includes: one or more signal acquisition devices communicatively connected to each other and configured to: projecting respectively to different parts of a target area so as to form a virtual playing interface of an electronic musical instrument to be played in the target area, wherein the different parts of the target area correspond to the different parts of the virtual playing interface and the virtual playing interface comprises a plurality of virtual playing zones; in response to detecting a trigger for a virtual performance zone within the virtual performance interface, acquiring an image signal of the triggered virtual performance zone.

Further, the virtual performance system of the present invention further includes: a memory configured to store sound source data corresponding to each virtual performance zone; a sound generator configured to output a sound signal corresponding to the sound source data; and a controller electrically connected to the plurality of signal acquisition devices and configured to: receiving and processing the image signals triggering the virtual performance zone acquired by the plurality of signal acquisition devices so as to determine the position triggering the virtual performance zone; acquiring sound source data corresponding to the position from the memory according to the position information; and controlling the sounder to output a sound signal corresponding to the sound source data.

In one embodiment, the signal acquisition device comprises: a projection module configured to project onto different portions of the target area so as to form a virtual playing interface of an electronic musical instrument to be played within the target area; a laser configured to generate laser light overlaying the virtual performance interface; and the camera is configured to acquire a signal of laser change of the virtual playing area when the virtual playing area is triggered.

In another embodiment, the memory stores data of playing interfaces of a plurality of musical instruments, so that the projection module forms virtual playing interfaces of a plurality of electronic musical instruments in the target area through projection.

In still another embodiment, the virtual playing system of the present invention further comprises a control panel electrically connected to the controller and configured to implement function setting of a plurality of electronic musical instruments through the controller.

In one embodiment, the plurality of electronic musical instruments includes at least one of a xylophone, a tremolo, a marimbap, an electronic organ, a chime, an electronic drum, a drum kit, and a gong, so as to enable a combined playing of the plurality of electronic musical instruments.

In another embodiment, the sound source data includes sound source data for each of the plurality of electronic musical instruments. The controller is further configured to: the virtual playing zone is configured according to at least one expected electronic musical instrument so as to output sound signals of sound source data associated with the expected electronic musical instrument when the virtual playing zone is triggered.

In yet another embodiment, the triggering of the virtual performance zone includes triggering by a human body and/or a trigger piece, and the triggering includes triggering by pressing and/or tapping.

In one embodiment, the controller includes: a processing unit configured to process the image signal output by the signal acquisition device; and a micro control unit configured to acquire sound source data associated with the virtual performance zone from the storage unit according to the image signal, and control the sounder to output the sound signal corresponding to the sound source data.

In another embodiment, the memory unit includes: an IC sound source memory configured to store sound source data corresponding to each of the virtual playing zones so as to transmit the sound source data to the sounder according to an instruction of the micro control unit; and a program memory configured to store a program for controlling the virtual playing system, so that the micro control unit realizes control of the virtual playing system by calling and executing the program.

Based on the above embodiments, the virtual playing system of the present invention can project the projection module to the target area (e.g. the area convenient for the player to play, such as the desktop or the wall surface), so as to form the virtual playing interface of one or more electronic musical instruments in the target area. In the playing process, the player can play the electronic musical instrument by triggering the corresponding position in the virtual playing area. Therefore, the scheme of the utility model can be used for playing the electronic musical instrument, and the playing positions can be flexibly arranged, so that the defect that the playing positions of the traditional musical instrument are limited is overcome. Furthermore, the scheme of the utility model adopts the virtual playing interface technology, so that the virtual playing system has small volume, is convenient to transport and carry, and overcomes the defects of large volume and inconvenient carrying of the traditional musical instrument. In addition, the playing system can also adopt wireless modules such as Bluetooth and the like to communicate with external equipment, and is also provided with a multifunctional panel, so that the virtual playing system can meet various requirements of different players on playing musical instruments.

Drawings

The above-described features of the present invention will be better understood and its numerous objects, features, and advantages will be apparent to those skilled in the art by reading the following detailed description with reference to the accompanying drawings. The drawings in the following description are only some embodiments of the utility model and other drawings may be derived by those skilled in the art without inventive effort, wherein:

fig. 1 is a block diagram schematically showing the composition of a virtual performance system according to an embodiment of the present invention;

fig. 2 is a schematic structural view showing a signal acquisition apparatus according to an embodiment of the present invention;

fig. 3 is a schematic view showing a virtual performance zone according to an embodiment of the present invention;

fig. 4 is an operational principle diagram showing a virtual playing system according to an embodiment of the present invention; and

fig. 5 is a schematic diagram showing an internal configuration of the audio source memory according to the embodiment of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 is a block diagram schematically showing the composition of a virtual performance system 100 according to an embodiment of the present invention.

As shown in fig. 1, the virtual playing system 100 of the present invention may include a plurality of signal acquiring devices 110, a memory 120, sounders 130 and controllers 140. Further, the plurality of signal acquiring devices may be connected in communication with each other in a wired or wireless manner, for example, they may be connected in a twisted pair or bluetooth manner, so as to perform data transmission with each other. In one application scenario, a plurality of signal acquisition devices are respectively projected to different parts of a target area so as to form a virtual performance interface of an electronic musical instrument to be played in the target area, wherein the different parts of the target area correspond to the different parts of the virtual performance interface and the virtual performance interface can comprise a plurality of virtual performance zones. Based on the projection described above, the plurality of signal acquisition devices are configured to acquire the image signals of the virtual performance area that is triggered in response to detection of triggering of the virtual performance area within the virtual performance interface.

In one embodiment, the memory 120 of the present invention is configured to store sound source data corresponding to each virtual performance zone and programs and data for implementing various functions of the virtual performance system. In order for the virtual playing system of the present invention to output tones of an electronic musical instrument to be played, the present invention may further include a sound generator 130 configured to output sound signals corresponding to the sound source data. Further, the controller 140, which serves as a control center of the virtual performance system of the present invention, may be electrically connected to each of the plurality of signal acquisition devices, or may be electrically connected to any one of the signal acquisition devices. In the latter case, the signal acquisition device electrically connected to the controller may act as a master signal acquisition device, by which data is exchanged with the controller, while the remaining signal acquisition devices act as slaves in data exchange with the master signal acquisition equipment.

In one application scenario, the controller may also be electrically connected to a memory and sound generator to enable control and communication functions therewith. In the course of performance by the virtual performance system of the present invention, the controller first receives and processes the image signals for triggering the virtual performance section acquired by the plurality of signal acquisition devices, so as to determine the specific position for triggering the virtual performance section. Then, the controller acquires sound source data corresponding to the position from the memory based on the position information. And finally, controlling the sounder to output a sound signal corresponding to the sound source data.

According to different application scenes, the virtual playing interface can comprise virtual playing interfaces of various electronic musical instruments, wherein the various electronic musical instruments can be at least one of xylophones, tremolo, marimbas, electronic organs, chimes, electronic drums, drum sets and gongs. The sound source data described above may include sound source data for each of the plurality of electronic musical instruments corresponding to the plurality of virtual performance interfaces, and the controller is further configured to, for each virtual performance interface: the virtual playing zone is configured according to at least one expected electronic musical instrument, so that when the virtual playing zone is triggered, the sound signals of the sound source data associated with the expected electronic musical instrument are output. Further, when one virtual performance interface includes the performance interfaces of the above-mentioned plural electronic musical instruments, the virtual performance system of the present invention can realize the joint performance of the plural electronic musical instruments.

In one embodiment, the above-mentioned triggering of the virtual performance section of the virtual performance system of the present invention may include triggering by a human body and/or a trigger piece, and the triggering includes triggering by pressing and/or tapping. Specifically, during the playing process, the virtual playing interface may be projected on the desktop, for example, when the virtual playing interface is a piano keyboard, a player presses corresponding keys on the piano keyboard on the desktop through fingers, so as to trigger the corresponding keys in the virtual playing area, and finally, sounds corresponding to the corresponding keys are emitted through the speakers, thereby implementing the playing of the piano. The virtual playing system can also project the playing interface of the percussion instruments such as xylophone or marimba on a desktop or a wall surface, and knock the corresponding knocking keys in the projection area through the knocking hammer so as to trigger the knocking keys, and finally, sound corresponding to the corresponding knocking keys is emitted through the loudspeaker, so that the percussion instruments are played.

Fig. 2 is a schematic structural diagram illustrating a signal acquisition apparatus 200 according to an embodiment of the present invention. To better illustrate the working principle of the signal acquisition apparatus 200 of the present invention, fig. 2 also depicts a table 204 and a fixing lever 205, on which a virtual playing interface played by a player is projected.

As shown in fig. 2, the signal acquiring apparatus of the present invention may include a laser 201, a projection module 202 and a camera 203, which are sequentially mounted on a fixing rod 205 from bottom to top. Further, the laser may be an infrared-producing laser or a laser that produces light of another color (e.g., green light). Preferably, the laser may be, for example, an infrared line laser configured to generate infrared rays covering the virtual performance interface. It should be noted that the signal acquisition device of the present invention selects infrared as the light source for signal detection because the infrared laser has the advantages of low power consumption, good integration and single light emitting frequency, and because the playing interface (e.g. keyboard) of the musical instrument is usually a plane, the traditional single laser beam cannot be used as the light source. Based on the principle, the utility model adopts the infrared linear laser as the detection light source. In particular, the infrared line laser may emit infrared light in a laser plane parallel to the table top and positioned adjacent to the table top such that the laser plane emitted by the infrared line laser is closely adjacent to the table top.

In one embodiment, the projection module 201 may be, for example, a projector configured to project onto different portions of a target area (e.g., the desktop 204) to form a virtual playing interface of an electronic musical instrument to be played within the target area. In other words, the projection module may project a keyboard pattern of an electronic musical instrument (e.g., a piano) to be played by laser light onto a laser plane formed by infrared light emitted from an infrared line laser. In one application scenario, a virtual playing interface of an electronic musical instrument to be played may be formed by a projector illuminating a holographic lens of a keyboard pattern previously saved in memory. Further, the installation height of the projection module may be set according to the specification of the projected performance interface of the electronic musical instrument.

In another embodiment, the camera may be a wide angle camera configured to capture a signal of infrared change of the virtual playing area when the virtual playing area is triggered. Specifically, when a player plays on the virtual playing interface, the fingers or the knocking device of the player can block and reflect infrared rays at the positions of the pressing or knocking keys, the pressing or knocking keys are triggered at the moment, and then the camera shoots images of the fingers or the knocking device at the time of blocking the infrared rays and transmits the images to the controller for further analysis and processing. In addition, the installation height of the camera can be adjusted according to the virtual playing interface projected by the projection module, wherein the shooting range of the camera can cover the projection module.

Compared with the common camera, the camera has the advantages of large lens visual angle, high definition and the like. The common camera has a small shooting area due to the fact that the visual angle of the lens is 90 degrees, and the whole virtual playing interface can be shot only by increasing the installation height of the camera. However, since the camera is installed at a higher height, the amount of light taken in is reduced, which is not favorable for signal detection and conversion. From the above analysis, it can be seen that the camera of the present invention overcomes many of the disadvantages of conventional cameras.

Fig. 3 is a schematic diagram illustrating a virtual performance zone 300 according to an embodiment of the present invention.

As shown in fig. 3, the virtual performance system 300 of the present invention may include a plurality of signal acquisition devices, which may be constituted by 3 signal acquisition devices 301 shown in fig. 3, for example. Accordingly, a camera 302, an infrared line laser, and a projection module may be included in each signal acquisition device, wherein the range photographed by the camera covers a keyboard performance area formed by the projection module through projection. Further, according to the principle of operation of the signal acquisition devices described in fig. 2, each signal acquisition device forms a respective virtual playing area A, B and C which together form a virtual playing interface for the instrument.

Note that the first row of each of the 3 virtual performance zones A, B and C in fig. 3 may be a chromatic zone, as shown in fig. 3 as the upper row consisting of note numbers # C, # D, # F, # G, and # a; and the second row is the diatonic region, shown in fig. 3 as the lower row of note numbers C, D, E, F, G, A and B. Although the above-mentioned 3 virtual playing areas A, B and C have the same structure, it is understood that these virtual playing areas may have different structures according to the playing requirements, and may also have playing area patterns of at least one or more of xylophone, vibrato, marimba, electronic organ, chime, electronic drum, drum kit and gong according to the kind of musical instrument to be played.

The virtual performance system of the present invention is provided with a plurality of signal acquisition devices, and accordingly, has a plurality of cameras, an infrared line laser, and a projection module. The above design is based on the following principle: as the horizontal visual angle of a single eye of a human can reach 156 degrees at most, the horizontal visual angles of two eyes can reach 188 degrees at most, the coincidence visual field of the two eyes of the human is 124 degrees, and the comfortable visual field of the single eye is 60 degrees. Therefore, if a single camera is designed, the image captured by the lens has a larger deformation amplitude with an increasing horizontal viewing angle. Based on the principle, the utility model designs a plurality of cameras, thereby realizing the image acquisition of a plurality of virtual playing areas.

In addition, the playing or striking keyboards of various musical instruments are different in size, for example, the general width of a piano keyboard is 1.3-1.4 meters, and the width of a 61-key marimba keyboard can reach 2.5 meters. Therefore, if a 2.5 m marimba keyboard pattern is projected without deformation of the keyboard pattern, the distance between the projection lens and the user is inevitably increased, and a high-intensity laser light source is required to solve the scattering problem, and obviously, the requirement for forming musical instrument playing interfaces with different sizes cannot be met by only one projector. Based on the principle, the utility model is provided with a plurality of projection modules, thereby realizing the projection of musical instrument playing interfaces with different sizes.

Fig. 4 is an operational principle diagram showing a virtual performance system 400 according to an embodiment of the present invention. It is to be understood that the virtual performance system 400 shown in fig. 4 is an exemplary embodiment of the virtual performance system 100 shown in fig. 1, which includes more implementation details. Therefore, the above description about the virtual playing system 100 is also applicable to the scheme of the virtual playing system 600, and the same contents are not repeated.

As shown in fig. 4, the virtual performance system 400 of the present invention may include a signal acquiring device 401, an a/D converting module 402, a filtering module 403, a main control unit 404, an IC sound source memory 405, a data memory 406, a power amplifier 407, a speaker 408, a bluetooth module 409, a fiber module 410, and a MIDI interface 411.

In one embodiment, the a/D conversion module may include an a/D conversion chip and its attached circuits, which are configured to convert the analog electrical signal collected and output by the camera into a digital electrical signal and output the digital electrical signal to the controller. Specifically, the a/D conversion functions to convert an analog signal continuous in time and amplitude into a digital signal discrete in time and amplitude. Typically, a/D conversion requires 4 processes of sampling, holding, quantizing, and encoding. In practical circuits, some of the foregoing processes may be combined, for example, quantization and coding are often implemented simultaneously in the conversion process.

In one embodiment, the filtering module may include a filter and its accompanying circuitry configured to filter the digital electrical signal and send the filtered digital electrical signal to the master control unit. In the course of musical instrument performance by the virtual performance system of the present invention, low-frequency or high-frequency interference signals may be generated in the circuit due to the electrical characteristics of the electronic components, and these interference signals may affect reception of a desired signal. Therefore, the digital electric signal output by the a/D conversion module can be processed by a filter composed of a resistor and a capacitor, for example, so as to filter out interference signals therein, and ensure normal reception of useful signals.

In one embodiment, the memory of the present invention may include an IC source memory and a data memory. Further, the IC sound source memory is configured to store sound source data associated with the specific trigger position for each virtual playing area, the sound source data including, but not limited to, data related to timbre and/or sound effect of one or more of a xylophone, a tremolo, a marimban, an electronic organ, an electronic drum, and a gong. The internal structure of the IC sound source memory will be briefly described with reference to fig. 5.

Fig. 5 is a schematic diagram showing an internal structure of an IC sound source memory 500 according to an embodiment of the present invention. As shown in fig. 5, the IC sound source memory stores waveform data of sound source data [0] to sound source data [ n ], where the sound source data [0] is waveform data of the lowest note and the sound source data [ n ] is waveform data of the highest note, where the magnitude of the value of n depends on the number of keys. When sound source data is stored in the same number of wavelengths, since the wavelength of bass is longer, the data of sound source data corresponding to a lower note number is longer than the data of sound source data corresponding to a higher note number, and thus the storage space occupied by the data in the IC sound source memory is larger. In one embodiment, the sound source data may correspond one-to-one to the keys shown in fig. 3, for example, the sound source data [0] may correspond to the note number C of the key shown in fig. 3, the sound source data [1] may correspond to the note number D of the key shown in fig. 3, for example, and the like.

In one embodiment, the data storage may be configured to store programs and data related to control of the virtual performance system-related modules and units of the present invention, and may also be used to store other music data related to performance. The data memory and the master control unit can be connected through a bus, and can comprise a plurality of groups of sound source memories, and each group of sound source memories and the master control unit can be connected through the bus.

In one embodiment, the main control unit of the present invention may include a micro control unit ("MCU") for receiving and processing the signals output from the plurality of signal acquiring devices, thereby distinguishing and locating the key positions of the virtual playing area. The processing unit may be implemented, for example, using a digital signal processor ("DSP"). The DSP is a microprocessor suitable for performing digital signal processing operations, and is mainly applied to rapidly implement various digital signal processing algorithms in real time. For the present invention, the DSP is used as a processing unit, and the audio signal can be processed rapidly in real time. Specifically, first, the DSP receives the digital electrical signal output from the signal acquisition device and subjected to a/D conversion, filtering, and MCU processing. Then, the DSP acquires sound source data associated with the digital electric signal from an IC sound source memory. Finally, the DSP transmits the sound source data to a sound generator (e.g., a speaker) so as to output a sound signal corresponding to the sound source data.

In one embodiment, the power amplifier may be composed of three parts: the device comprises a preamplifier circuit, a drive amplifier circuit and a final-stage power amplifier circuit. The pre-amplifier circuit is configured for impedance matching, which has the advantages of high input impedance and low output impedance, so that the current signal of audio source data can be received and transmitted with the least data loss. The drive amplifying circuit is configured to further amplify the current signal sent by the pre-amplifying circuit into a signal with medium power so as to drive the final-stage power amplifying circuit to normally work. The final power amplifying circuit plays a key role in the power amplifier and is configured to amplify the current signal sent by the driving amplifying circuit into a high-power signal so as to drive the loudspeaker to play sound. Based on the important function of the final power amplifying circuit, the technical index of the final power amplifying circuit determines the technical index of the whole power amplifier.

In one embodiment, the loudspeaker may include a magnet, a frame, a centering disk, and a cone of diaphragm-fold cone. Alternatively, the speaker may further include the power amplifier described above. A loudspeaker, commonly known as a "horn", is a transducer device that converts an electrical signal into an acoustic signal. In the working process of the loudspeaker, the audio electric energy signal causes a cone or a diaphragm of the loudspeaker to vibrate and generate resonance (resonance) with surrounding air to make sound through electromagnetic, piezoelectric or electrostatic effects. Alternatively, the speaker may be disposed outside the electronic musical instrument of the present invention, which may be wirelessly connected with the electronic musical instrument of the present invention by a wireless communication technique such as bluetooth.

In one embodiment, the virtual performance system of the present invention may further include a transmission interface configured to enable the virtual performance system to interact with an external device to provide a corresponding extended function. Further, the transmission interface may include a wired transmission interface and/or a wireless transmission interface to provide wired and/or wireless connection with an external device. As a specific implementation manner, the wired transmission Interface may be, for example, one or more of a music device Digital Interface ("MIDI"), a General-purpose input/output ("GPIO") Interface, a high-speed Serial computer expansion bus ("PCIE") Interface, a Serial Peripheral Interface ("SPI"), and an optical fiber Interface, as required.

Further, the wired transmission interface may be electrically connected to the main control unit, thereby achieving data transmission between the virtual playing system of the present invention and an external device (e.g., a server, a computer, or other musical instrument). In one embodiment, when the wired transmission interface is a standard PCIE interface, the data to be processed is transmitted from the main control unit to the computer through the standard PCIE interface, so that the audio signal output by the virtual playing system of the present invention is controlled and edited by the computer.

In another embodiment, the wired transmission interface may also be a MIDI interface. MIDI is a standard for digital music, which defines various notes or playing codes for playing devices such as electronic musical instruments and allows electronic musical instruments, computers or other playing apparatuses to be connected, adjusted and synchronized with each other so as to realize real-time exchange of playing data between the instruments and apparatuses. In one embodiment, the MIDI interface is configured for data communication between the virtual playing system of the present invention and a musical instrument having the MIDI interface, thereby enabling a joint performance between a plurality of electronic musical instruments.

In still another embodiment, the wired transmission interface may be a fiber optic interface including an optical module configured for data transmission between the virtual performance system of the present invention and an external device. Further, the light module may include a light emitting module and a light receiving module. In one application scenario, on one hand, an electrical signal sent by the main control unit of the virtual playing system of the present invention is processed by the driving chip inside the light emitting module, so as to drive the semiconductor Laser (LD) or the Light Emitting Diode (LED) to emit a modulated optical signal at a corresponding rate, and the optical signal is coupled into the optical fiber so as to be transmitted to the external device through the optical fiber. On the other hand, the optical signal sent from the external device is processed by the optical detection diode and the amplifier inside the optical receiving module, so as to output an electrical signal with a corresponding code rate, and the electrical signal is transmitted to the main control unit. The virtual playing system and the external equipment carry out data transmission through the optical signals, so that the defect of large attenuation of electric signal transmission can be effectively overcome, the data transmission speed is higher, the anti-jamming capability is stronger, and the performance of the virtual playing system is improved.

In another embodiment, the wireless transmission interface may be one or more of a bluetooth interface, an infrared interface, a WIFI interface, and the like, for example, as needed. The wireless transmission interface is connected with the main control unit in a wireless mode, and therefore data transmission between the virtual playing system and external equipment (such as a server, a computer or other musical instruments) is achieved. In one embodiment, the wireless transmission interface may be, for example, a bluetooth interface including a bluetooth module. The Bluetooth interface can be used for connecting the virtual playing system and the external loudspeaker, wherein the virtual playing system and the loudspeaker can be internally provided with a Bluetooth module, so that the position of the external loudspeaker can be conveniently and flexibly placed according to the requirement of field playing.

In one embodiment, the virtual performance system of the present invention may further include a control panel connected to the controller through a line bit interface and configured to implement setting of functions of the virtual performance system of the present invention through the controller. In one embodiment, the control panel may include, for example, a display screen, a switch key for different instruments, volume and tone keys, and other functional modules. The display screen is configured to display a performance status of the current electronic musical instrument. The switching keys of different musical instruments can be used for selecting the playing modes of different musical instruments such as a piano, a xylophone, a marimba, a tremolo, an electronic organ, an electronic drum or a gong. The volume keys are connected to a power amplifier so as to be configured to control the magnitude of sound output by the musical instrument.

In one embodiment, the virtual performance system of the present invention may further include a power supply module, which may implement power supply to the virtual performance system in various ways. For example, but not limited to, the virtual playing system of the present invention may be powered by external mains and a voltage transformation unit disposed inside the power module; the virtual playing system can also be powered by arranging a power adapter. In addition, the virtual playing system of the utility model can be powered by arranging a battery box on the body and a dry battery.

In one embodiment, the virtual performance system of the present invention can also be arranged as an electronic musical instrument. The electronic musical instrument may include an instrument body, which may be a cavity structure, which may be made of metal or composite material, and whose surface may be arranged with the camera, the projection module, the infrared line laser, and the control panel of the present invention. Further, the instrument body may include a cavity in which part of the modules and units of the virtual playing system of the present invention can be accommodated. In one application scenario, the cavity may also house a power module and other accessory circuit boards or modules. In addition, the external surface of the instrument body can be provided with the various external transmission interfaces, so that a player can conveniently control and play.

It should be understood that the terms "first", "second", "third" and "fourth", etc. in the claims, the description and the drawings of the present invention are used for distinguishing different objects and are not used for describing a particular order. The terms "comprises" and "comprising," when used in the specification and claims of this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in the specification and claims of this application, the singular form of "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should be further understood that the term "and/or" as used in the specification and claims of this specification refers to any and all possible combinations of one or more of the associated listed items and includes such combinations.

As used in this specification and claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to a determination" or "in response to a detection". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".

Although the embodiments of the present invention are described above, the descriptions are only examples for facilitating understanding of the present invention, and are not intended to limit the scope and application scenarios of the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A virtual performance system, characterized by comprising:

one or more signal acquisition devices communicatively connected to each other and configured to:

projecting respectively to different parts of a target area so as to form a virtual playing interface of an electronic musical instrument to be played in the target area, wherein the different parts of the target area correspond to the different parts of the virtual playing interface and the virtual playing interface comprises a plurality of virtual playing zones;

in response to detecting a trigger for a virtual performance zone within the virtual performance interface, acquiring an image signal of the triggered virtual performance zone;

a memory configured to store sound source data corresponding to each virtual performance zone;

a sound generator configured to output a sound signal corresponding to the sound source data; and

a controller electrically connected to the plurality of signal acquisition devices and configured to:

receiving and processing the image signals triggering the virtual performance zone acquired by the plurality of signal acquisition devices so as to determine the position triggering the virtual performance zone;

acquiring sound source data corresponding to the position from the memory according to the position information; and

and controlling the sounder to output a sound signal corresponding to the sound source data.

2. The virtual performance system according to claim 1, wherein the signal acquisition means includes:

a projection module configured to project onto different portions of the target area so as to form a virtual playing interface of an electronic musical instrument to be played within the target area;

a laser configured to generate laser light overlaying the virtual performance interface; and

the camera is configured to acquire a signal of laser change of the virtual playing area when the virtual playing area is triggered.

3. The virtual playing system of claim 2, wherein the memory stores data of playing interfaces of a plurality of musical instruments, so that the projection module forms virtual playing interfaces of a plurality of electronic musical instruments in the target area through projection.

4. The virtual playing system according to claim 1, further comprising a control panel electrically connected to the controller and configured to implement function setting of a plurality of electronic musical instruments by the controller.

5. The virtual playing system according to claim 4, wherein the plurality of electronic musical instruments include at least one of a xylophone, a tremolo, a marimbap, an electronic organ, a chime, an electronic drum, a drum kit and a gong, so as to realize a combined playing of the plurality of electronic musical instruments.

6. The virtual playing system according to claim 5, wherein the sound source data includes sound source data for each of the plurality of electronic musical instruments, the controller is further configured to:

the virtual playing zone is configured according to at least one expected electronic musical instrument so as to output sound signals of sound source data associated with the expected electronic musical instrument when the virtual playing zone is triggered.

7. The virtual performance system of claim 1, wherein the triggering of the virtual performance zone comprises triggering by a human body and/or a trigger piece, and the triggering comprises triggering by pressing and/or tapping.

8. The virtual playing system according to claim 1, wherein the controller includes:

a processing unit configured to process the image signal output by the signal acquisition device; and

a micro control unit configured to acquire sound source data associated with the virtual performance zone from the memory according to the image signal and control the sounder to output the sound signal corresponding to the sound source data.

9. The virtual performance system according to claim 8, wherein the memory includes:

an IC sound source memory configured to store sound source data corresponding to each of the virtual playing zones so as to transmit the sound source data to the sounder according to an instruction of the micro control unit; and

a program memory configured to store a program for controlling the virtual playing system, so that the micro control unit realizes control of the virtual playing system by calling and executing the program.