WO2022194308A1

WO2022194308A1 - Electronic musical instrument

Info

Publication number: WO2022194308A1
Application number: PCT/CN2022/086813
Authority: WO
Inventors: 陈岳
Original assignee: 陈岳
Priority date: 2021-03-15
Filing date: 2022-04-14
Publication date: 2022-09-22
Also published as: CN112885319A; CN113808559A

Abstract

An electronic musical instrument (100, 400), comprising: a plurality of magnetic induction zones (110, 402), wherein each magnetic induction zone (110, 402) is configured to generate a first magnetic induction signal associated with the magnetic induction zone when being triggered; a sound source memory (120, 407), which is configured to be used for storing sound source data corresponding to each magnetic induction zone (110, 402); an output unit (130, 408), which is configured to be used for outputting a sound signal corresponding to the sound source data; and a control unit (140, 406), which is configured to be used for determining an associated magnetic induction zone (110, 402) according to the first magnetic induction signal, obtaining the sound source data corresponding to the associated magnetic induction zone (110, 402) from the sound source memory (120, 407), and controlling the output unit (130, 408) to output the sound signal corresponding to the sound source data.

Description

an electronic musical instrument

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority of the Chinese patent application filed on March 15, 2021, the application number is 202110277388X, and the title is "an electronic musical instrument".

technical field

The present invention generally relates to the field of musical instruments. More specifically, the present invention relates to an electronic musical instrument.

Background technique

Traditional musical instruments usually use vibrating materials to produce sound. Since some vibrating materials are selected from precious woods, the overall cost of the instrument is relatively high. At the same time, since the traditional musical instruments are usually provided with a resonance box to amplify the sound, the traditional musical instruments are bulky and inconvenient to carry. In addition, traditional musical instruments are not environmentally friendly in the process of production and processing, the production process is complicated and is subject to the supply of natural materials.

Further, in the existing electronic musical instruments (such as piano musical instruments), the conduction of the circuit switch is controlled by hitting the keys to generate an electrical signal related to the sound of the piano, or the electric signal is generated by inducting the hitting with a common sensor, And then send out the sound signal. Electronic musical instruments based on this working principle are usually less sensitive, thus affecting the performance of the player.

In addition, according to performance requirements, it is usually necessary to play different types of electronic musical instruments, such as xylophone, vibraphone, marimba, electronic organ, electronic drum, and gong, etc., according to different performance scenarios. If these musical instruments are carried at the same time, the overall volume is huge and inconvenient to carry. In addition, the existing electronic musical instruments have relatively single functions and few external interfaces, and cannot be easily upgraded to different types of electronic musical instruments according to performance requirements, so they cannot meet the multi-functional requirements of performers for electronic musical instruments.

SUMMARY OF THE INVENTION

In order to solve at least one or more of the problems in the above-mentioned background art, the present invention provides an electronic musical instrument. The electronic musical instrument uses electromagnetic induction technology to receive a trigger from the outside, converts the magnetic flux change caused by the trigger into an electrical signal, and then outputs a corresponding sound signal according to the electrical signal. In addition, the electronic musical instrument of the present invention conveniently realizes various types of electronic musical instruments by flexibly setting different trigger regions.

Specifically, the present invention discloses an electronic musical instrument. The musical instrument includes a plurality of magnetic induction areas, wherein each magnetic induction area is configured to generate a first magnetic induction signal associated therewith when triggered; a sound source memory is configured to store sound source data corresponding to each magnetic induction area; an output unit , which is configured to output a sound signal corresponding to the sound source data; and a control unit, which is configured to: determine the associated magnetic induction area according to the first magnetic induction signal; obtain the associated magnetic induction from the sound source memory sound source data corresponding to the area; and controlling the output unit to output a sound signal corresponding to the sound source data.

In one embodiment, the triggering includes contact triggering and/or non-contact triggering, wherein the contact triggering includes performing hitting and/or pressing on one and/or more of the plurality of magnetic induction areas. caused by the trigger.

In another embodiment, the sound source data includes sound source data for each of the plurality of musical instruments, and the control unit is further configured to: configure the magnetic induction area according to the expected at least one musical instrument so as to be When the magnetic induction zone is triggered, the sound signal associated with the expected instrument is output.

In yet another embodiment, each magnetic induction region of the plurality of magnetic induction regions includes a respective first magnetic induction circuit to generate the associated first magnetic induction signal when triggered.

In one embodiment, the electronic musical instrument of the present invention further includes a trigger, which is used for triggering the magnetic induction area, so that the triggered magnetic induction area generates the first magnetic induction signal.

In another embodiment, the triggering member includes: a second magnetic induction circuit for generating a second magnetic induction signal, so that when the triggering member triggers the magnetic induction area, the triggered magnetic induction area generates all the first magnetic induction signal.

In yet another embodiment, the control unit includes: a conversion unit configured to convert the first magnetic induction signal into an electrical signal; and a processing unit configured to: convert the audio signal from the audio source according to the electrical signal The memory acquires sound source data associated with the magnetic induction area; and controls the output unit to output the sound signal corresponding to the sound source data.

In one embodiment, the plurality of magnetic induction areas are made of a flexible circuit board, wherein the flexible circuit board is a whole circuit board or is formed by splicing a plurality of sub-circuit boards.

In another embodiment, the electronic musical instrument of the present invention further includes a wired transmission interface and/or a wireless transmission interface, so as to provide extended functions with external devices.

In yet another embodiment, the electronic musical instrument of the present invention further comprises a control panel and/or a power supply module, wherein the control panel is connected to the control unit and configured to perform function settings on the electronic musical instrument, and The power module is configured to power the electronic musical instrument.

In the electronic musical instrument of the present invention, the trigger area can be arranged on the flexible circuit board in the form of a connector, and the volume of the electronic musical instrument can be reduced by crimping the flexible circuit board, thereby facilitating transportation and carrying. In addition, the electronic musical instrument of the present invention can be made of metal materials or composite materials with lower price, thus better solving the problems of limited material selection and high price of traditional musical instruments. At the same time, the electronic musical instrument of the present invention can also use a wireless module such as bluetooth to communicate with external devices, and is also provided with a multi-function panel, thereby further reducing the volume of the electronic musical instrument of the present invention and making it convenient for players to play. In addition, the electronic musical instrument of the present invention also has the advantages of good timbre, good playing feel, strong anti-interference ability, and many external interfaces, etc., so as to meet the various usage requirements of different players for the musical instrument.

Description of drawings

The above-described features of the present invention may be better understood, and its numerous objects, features and advantages made apparent to those skilled in the art by reading the following detailed description with reference to the accompanying drawings. The accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative work, wherein:

1 is a schematic block diagram showing the composition of an electronic musical instrument according to an embodiment of the present invention;

2 is a schematic structural diagram illustrating a panel of an electronic musical instrument according to an embodiment of the present invention;

3 is a schematic structural diagram illustrating another panel of an electronic musical instrument according to an embodiment of the present invention;

4 is a schematic structural diagram illustrating an electronic musical instrument according to an embodiment of the present invention;

FIG. 5 is a block diagram showing the composition principle of an electronic musical instrument according to an embodiment of the present invention; and

FIG. 6 is a schematic diagram illustrating an internal structure of a sound source memory according to an embodiment of the present invention.

Detailed ways

The technical solutions 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. Obviously, the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present invention.

FIG. 1 is a schematic block diagram showing the composition of an electronic musical instrument 100 according to an embodiment of the present invention.

As shown in FIG. 1 , the electronic musical instrument 100 of the present invention may include a plurality of magnetic induction areas 110 , a sound source memory 120 , an output unit 130 and a control unit 140 . Further, each magnetic induction region is configured to generate a first magnetic induction signal associated therewith when triggered. The sound source memory is configured to store sound source data corresponding to each of the aforementioned magnetic induction regions. The output unit is configured to output a sound signal corresponding to the sound source data. The control unit is configured to determine the associated magnetic induction area according to the aforementioned first magnetic induction signal, so as to obtain sound source data corresponding to the associated magnetic induction area from the sound source memory, thereby controlling the output unit to output a sound signal corresponding to the sound source data.

In one embodiment, the above-mentioned triggering of the multiple magnetic induction areas of the electronic musical instrument of the present invention may include contact triggering and/or non-contact triggering, wherein the contact triggering may include triggering one of the multiple magnetic induction areas and/or or more triggers caused by performing strikes and/or presses. Specifically, according to different application scenarios, the plurality of magnetic induction areas may be configured as contact trigger areas of various musical instruments. For example, the magnetic induction area can be set as the key pressing area of the electronic organ, and the magnetic induction area can also be set as the striking area of one or more electronic musical instruments among the xylophone, vibraphone, marimba, electronic drum and gong, thereby Realize contact triggering on the magnetic induction area of many different electronic musical instruments.

In addition, according to different types of musical instruments or different performance scenarios, the triggering of the magnetic induction area can also be set as a non-contact triggering. For example, an electromagnetic signal can be emitted by a trigger to interact with the first magnetic induction signal of the magnetic induction area. When the trigger is close to the magnetic induction area (without contact), the magnetic induction area can be triggered, thereby causing the magnetic flux of the magnetic induction area to flow. Variety. Corresponding to the above-described setting of a plurality of magnetic induction regions in order to realize a plurality of electronic musical instruments, the sound source data may include sound source data for each of the plurality of musical instruments. In this case, the control unit is further configured to configure the magnetic induction area according to the expected at least one musical instrument, so as to output a sound signal associated with the expected musical instrument when the magnetic induction area is triggered.

FIG. 2 is a schematic structural diagram illustrating a panel 200 of an electronic musical instrument according to an embodiment of the present invention.

As shown in FIG. 2 , according to different application scenarios, the electronic musical instrument of the present invention can be set as an electronic drum, which can include a plurality of magnetic induction areas 201 . Further, according to the performance requirements, the magnetic induction area can be set to the hitting areas such as the bass drum, the snare drum, the low-pass drum and the cymbal as shown in Figure 2, so that the bass drum and the snare drum are issued when the drumsticks strike the above-mentioned magnetic induction area. , low-pass drums and cymbals and other corresponding sounds, so as to realize the performance function of electronic drums.

FIG. 3 is a schematic structural diagram illustrating another panel 300 of an electronic musical instrument according to an embodiment of the present invention. It can be understood that the panel layout shown in FIG. 3 is only schematic, and in practical applications, it can be set to different numbers of keys or percussion keys according to the different musical instruments implemented, and the corresponding keys are marked on it. logo.

As shown in FIG. 3 , according to different application scenarios, the electronic musical instrument of the present invention can be one or more percussion instruments such as an electronic organ or a xylophone, a vibraphone, and a marimba by arranging the keys. The panel of the aforementioned electronic organ or percussion organ may include a plurality of keys 301 , wherein each key may correspond to a magnetic induction area, and the magnetic induction area may be closely arranged below the keys.

Further, according to the performance requirements, the plurality of keys can be made of composite materials and can be arranged in two rows, wherein the first row can be set as a chromatic zone, as shown in FIG. 3 by the note numbers #C, #D, The upper row consists of #F, #G and #A…; while the second row can be set as a whole range, as shown in Figure 3, it consists of note numbers C, D, E, F, G, A and B… bottom row. During the playing process, when the above-mentioned keys are manually pressed or struck with a hammer, a corresponding piano sound is emitted, thereby realizing the playing function of one of an electronic organ, a xylophone, a vibraphone or a marimba.

Further, the above-mentioned plurality of keys may be made of a flexible circuit board or a plurality of magnetic induction areas may be arranged on the flexible circuit board 302, wherein the flexible circuit board may be a whole circuit board or may be composed of a plurality of sub-circuits. Plates are spliced together. Preferably, the flexible circuit board can be, for example, a flexible circuit board or a thin-film circuit board, which has the advantages of high wiring density, light weight, high reliability, and good bending performance. In particular, when the flexible circuit board is formed by splicing a plurality of sub-circuit boards, the flexible circuit board may include one or more keyboard module interfaces 303 to realize splicing with other sub-circuit boards or connection with the piano body.

In some application scenarios, the plurality of keyboard modules may be connected with other sub-circuit boards or connected with the piano body by means of mechanical connection, such as snap-connection or plug-in and pull-out. Based on the above design, when the electronic musical instrument of the present invention needs to be transported, the flexible circuit board can be pulled out from the piano body, and the flexible circuit board can be folded to make it curl, thereby reducing the volume and making it convenient Shipping and Carrying.

FIG. 4 is a schematic structural diagram illustrating an electronic musical instrument 400 according to an embodiment of the present invention.

As shown in FIG. 4 , in one embodiment, the electronic musical instrument of the present invention may include a key 401 , a magnetic induction area 402 , a trigger 403 , a body 404 , a main board 405 , a control unit 406 , a sound source memory 407 and an output unit 408 . Specifically, the number and layout of the keys can be configured according to the type of electronic musical instrument, and they can be made of thermoplastic polyurethane elastomer rubber plate (TPU) or wood, wherein the keys made of TPU plate have high strength , good toughness, wear resistance and aging resistance.

Further, the shaded area of the grid in FIG. 4 is a magnetic induction area, which can be arranged at the lower part of the key, and each magnetic induction area includes a respective first magnetic induction circuit, so as to generate the associated first magnetic induction circuit when the magnetic induction area is triggered. Magnetic induction signal. In one embodiment, the first magnetic induction circuit may include a circuit composed of a first magnetic induction coil (the magnetic induction coil is represented in the form of a grid in FIG. 4 ). When the first magnetic induction coil is energized, based on the principle of electromagnetic induction, an excitation alternating electromagnetic field is generated in the magnetic induction area. Further, when the magnetic induction area is triggered, the magnetic flux of its alternating magnetic field will change, and the control unit can calculate the position of the magnetic induction area through the change of the magnetic flux, and then retrieve the sound source data in the sound source memory, so that the output unit outputs and The sound signal corresponding to the sound source data.

In one embodiment, the trigger member may include a second magnetic induction circuit, which is used for generating a second magnetic induction signal, so that when the trigger member triggers the magnetic induction area, the triggered magnetic induction area generates the aforementioned first magnetic induction signal . Further, the trigger member may include a circuit composed of a second magnetic induction coil, which may be arranged on the round head portion of the hammer (ie, trigger member 403 ) shown in FIG. 4 . When the second magnetic induction coil is energized, an alternating electromagnetic field is generated around the second magnetic induction coil based on the principle of electromagnetic induction. When playing the musical instrument, the player uses the hammer to strike the keys, so that the electromagnetic field generated by the second magnetic induction coil triggers the magnetic induction area under the corresponding key, so that the magnetic flux of the alternating magnetic field in the magnetic induction area changes. Further, the control unit can obtain the position of the magnetic induction area by calculating the change of the magnetic flux, and then retrieve the sound source data in the sound source memory, so that the output unit outputs the sound signal corresponding to the sound source data.

In another embodiment, the triggering member may be made of metal material, and when it approaches the magnetic induction area by hitting the key, the magnetic induction area may be triggered, so that the triggered magnetic induction area produces a changed first magnetic induction Signal. Specifically, a current of a specific frequency is loaded in the first magnetic induction coil, so that the magnetic induction area provides an excitation alternating electromagnetic field and can induce feedback of the trigger. When the trigger is close to the magnetic induction area, the trigger obtains energy from the excitation electromagnetic field and superimposes the pressure-sensitive signal into the magnetic field change, thereby triggering the magnetic induction area and changing the magnetic flux of the magnetic induction area. Further, the control unit can obtain the position of the magnetic induction area by calculating the change of the magnetic flux, and then retrieve the sound source data in the sound source memory, so that the output unit outputs the sound signal corresponding to the sound source data.

In one embodiment, the electronic musical instrument of the present invention may further include a body. The piano body may be a cavity structure, which may be made of metal or composite material, and a plurality of keys may be arranged on its surface, so as to form different kinds of electronic musical instruments. Further, the piano body may include a cavity in which the main board and the output unit may be accommodated. In an application scenario, the cavity can also accommodate a power module and other accessory circuit boards or modules. In addition, a control panel and various external transmission interfaces may also be arranged on the outer surface of the piano body, so as to facilitate the player's manipulation and performance.

Further, a control unit and/or a sound source memory and other electronic components may be arranged on the mainboard, wherein the sound source memory is configured to store sound source data associated with the keys. The control unit may include a conversion unit and a processing unit, wherein the conversion unit is configured to convert the first magnetic induction signal from the magnetic induction area into an electrical signal; and the processing unit is configured to obtain the audio signal from the audio source memory according to the electrical signal. sound source data associated with the magnetic induction area, so as to control the output unit to output the sound signal corresponding to the sound source data. During the performance, first, the control unit receives the change signal from the magnetic flux generated by the plurality of magnetic induction areas. Next, the signal is converted into an electrical signal and the sound source data associated therewith is acquired from the sound source memory according to the electrical signal. Finally, the control output unit outputs the piano sound signal corresponding to the sound source data.

In one embodiment, the above-mentioned sound source memory may be configured to store sound source data associated with the plurality of magnetic induction regions. In an application scenario, the sound source data may include, for example, data related to the timbre and/or sound effect of at least one electronic musical instrument. According to the solution of the present invention, the at least one electronic musical instrument may include, but is not limited to, one or more of a variety of musical instruments such as xylophone, vibraphone, marimba, electronic organ, electronic drum, and gong. Further, the electronic musical instrument of the present invention can present the same performance effect as the existing various electronic musical instruments according to different sound source data and different settings of the number of magnetic induction areas.

In one embodiment, the above-mentioned output unit may be configured to output a musical sound signal corresponding to the sound source data. In an application scenario, the output unit may be a speaker including a power amplifier, so as to amplify the piano sound signal and play it in the form of sound.

FIG. 5 is a block diagram showing the composition principle of an electronic musical instrument 500 according to an embodiment of the present invention. It can be understood that the electronic musical instrument 500 shown in FIG. 5 is an exemplary embodiment of the electronic musical instrument 100 shown in FIG. 1 , which includes more implementation details. Therefore, the above description about the electronic musical instrument 100 is also applicable to the solution of the electronic musical instrument 500 , and the same content will not be repeated.

As shown in FIG. 5, the electronic musical instrument 500 of the present invention may include a magnetic induction area 501, an A/D conversion module 502, a filter module 503, a main control unit 504, an IC sound source memory 505, a data memory 506, a power amplifier 507, a speaker 508, Bluetooth module 509 , fiber optic module 510 and MIDI interface 511 .

In one embodiment, the A/D conversion module may include an A/D conversion chip and its associated circuits, which are configured to convert analog electrical signals output from the magnetic induction area into digital electrical signals and input them to the control unit. Specifically, the role of A/D conversion is to convert an analog signal with continuous time and amplitude into a digital signal with discrete time and amplitude. Usually A/D conversion needs to go through four processes of sampling, holding, quantization and encoding. In an actual circuit, some of the aforementioned processes can be combined, for example, quantization and encoding are often implemented simultaneously in the conversion process.

In one embodiment, the filtering module may include a filter and its associated circuits configured to filter the digital electrical signal and send the filtered digital electrical signal to the main control unit. In the process of playing electronic musical instruments, due to the electrical characteristics of electronic components, low-frequency or high-frequency interference signals may be generated in the circuit, and these interference signals may affect the reception of useful signals related to key strikes. Therefore, the digital electrical signal output by the A/D conversion module can be processed through a filter composed of resistors and capacitors, for example, so as to filter out the interfering signals and ensure the normal reception of useful signals.

In one embodiment, the memory of the present invention may include an IC sound source memory and a data memory. The IC sound source memory is configured to store sound source data associated with a plurality of magnetic induction areas, the sound source data including but not limited to one of a xylophone, a vibraphone, a marimba, an electronic organ, an electronic drum and a gong or data related to the timbre and/or sound effects of various pianos. The internal structure of the IC sound source memory is briefly described below with reference to FIG. 6 .

FIG. 6 is a schematic diagram illustrating an internal structure of an IC sound source memory 600 according to an embodiment of the present invention. As shown in FIG. 6 , the IC sound source memory stores waveform data of sound source data [0] to sound source data [n], wherein sound source data [0] is the waveform data of the lowest sound, and sound source data [n] is the highest sound Waveform data, where the value of n depends on the number of keys. When the sound source data is stored in the same number of wavelengths, since the wavelength of the bass is longer, the data of the sound source data corresponding to the lower note number is longer than that of the sound source data corresponding to the higher note number, so It occupies more storage space in the IC sound source memory. In one embodiment, the sound source data is in one-to-one correspondence with the keys shown in FIG. 4 , for example, the sound source data [0] may correspond to the note number C of the keyboard shown in FIG. 4 , and the sound source data [1] may correspond to For example, the note number D of the key shown in FIG. 4 and the like.

In one embodiment, the data store may be configured to store programs and data related to controlling the operation of the electronic musical instrument related modules and units, and may also be used to store other musical data related to performance. The data storage device and the main control unit can be connected through a bus, which can include multiple groups of sound source memories, and each group of sound source memories can be connected with the main control unit through a bus.

In one embodiment, the main control unit of the present invention may include a micro-control unit (“MCU”) and a processing unit, wherein the MCU is configured to receive and process signals sent from the plurality of magnetic induction areas, so as to convert the magnetic flux into The change signal is converted into an electrical signal, thereby distinguishing and locating the magnetic induction regions. The processing unit may for example be implemented using a digital signal processor ("DSP"). DSP is a microprocessor suitable for digital signal processing operations, and its main application is to realize various digital signal processing algorithms quickly and in real time. For the present invention, the DSP is used as the 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 magnetic induction area and subjected to A/D conversion, filtering and MCU processing. Next, the DSP obtains the sound source data associated with the digital electrical signal from the IC sound source memory. Finally, the DSP sends the sound source data to the output unit 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: a preamplifier circuit, a drive amplifier circuit and a final stage power amplifier circuit. The preamplifier circuit is configured for impedance matching, which has the advantages of high input impedance and low output impedance, so that the current signal of the audio source data can be received and transmitted with as little data loss as possible. The drive amplifying circuit is configured to further amplify the current signal sent from the pre-amplifying circuit into a medium-power signal, so as to drive the final stage power amplifying circuit to work normally. The final stage power amplifier circuit plays a key role in the power amplifier, and its technical indicators determine the technical indicators of the entire power amplifier. The final stage power amplifier circuit is configured to amplify the current signal sent by the drive amplifier circuit into a large Power signal to drive the speaker to play sound.

In one embodiment, the loudspeaker may include components such as magnets, frames, centering support pieces, vibrating die ring cone-shaped paper cones, and the like. Alternatively, the speaker may further include the above-mentioned power amplifier. A loudspeaker, commonly known as a "horn", is a transducer that converts electrical signals into sound signals. Specifically, the audio power signal causes the cone or diaphragm of the speaker to vibrate and resonate (resonate) with the surrounding air through electromagnetic, piezoelectric or electrostatic effects to produce sound. Optionally, the speaker can also be arranged outside the electronic musical instrument of the present invention, which can be wirelessly connected to the electronic musical instrument of the present invention through a wireless communication technology such as Bluetooth.

In one embodiment, the electronic musical instrument of the present invention may further include a transmission interface. It is configured to allow the electronic musical instrument to interact with an external device to provide extended functions of the electronic musical instrument, wherein the transmission interface includes a wired transmission interface and/or a wireless transmission interface to provide wired and wireless communication with the external device. / or wireless connection. As a specific implementation, the wired transmission interface can be, for example, a music device digital interface (“Musical Instrument Digital Interface, MIDI” for short), general-purpose I/O (“General-purpose input/output, GPIO” for short) as required. One or more of an interface, a high-speed serial computer expansion bus ("Peripheral Component Interconnect Express, referred to as PCIE") interface, a serial peripheral interface ("Serial Peripheral Interface, referred to as SPI") and an optical fiber interface.

Further, the wired transmission interface may be electrically connected with the main control unit, thereby realizing data transmission between the musical instrument and an external device (eg, a server, a computer or other musical instruments). In one embodiment, the wired transmission interface may be, for example, a standard PCIE interface. The data to be processed is transmitted to the computer by the main control unit through a standard PCIE interface, thereby realizing operations such as controlling and editing the audio signal output by the electronic musical instrument of the present invention through the computer.

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

In yet another embodiment, the wired transmission interface may also be an optical fiber interface including an optical module, which is configured for data transmission between the musical instrument of the present invention and an external device. Specifically, the light module may include a light emitting module and a light receiving module. In an application scenario, on the one hand, the electrical signal of the data sent by the main control unit of the musical instrument of the present invention is processed by the driving chip inside the light emitting module, thereby driving the semiconductor laser (LD) or light emitting diode (LED) to emit corresponding A modulated optical signal at a rate, and the optical signal is coupled into an optical fiber for transmission to an external device through the optical fiber. On the other hand, the optical signal of the data sent by the external device is processed by the photodetector diode and amplifier inside the optical receiving module, so as to output the electrical signal of the corresponding code rate, and transmit the electrical signal to the main control unit. The optical signal is used for data transmission between the musical instrument of the present invention and the external equipment, which not only can effectively overcome the disadvantage of large attenuation of electrical signal transmission, but also has faster data transmission speed and stronger anti-interference ability, thereby improving the performance of the electronic musical instrument of the present invention. performance.

In another embodiment, the wireless transmission interface may be, for example, one or more of a Bluetooth interface, an infrared interface, and a WIFI interface as required. The wireless transmission interface is wirelessly connected to the main control unit, thereby realizing data transmission between the electronic musical instrument of the present invention and an external device (such as a server, a computer or other musical instruments). In one embodiment, the wireless transmission interface may be, for example, a Bluetooth interface including a Bluetooth module, and the Bluetooth interface may be used to connect the musical instrument and an external speaker of the present invention, wherein both the electronic musical instrument and the loudspeaker of the present invention may A Bluetooth module is provided, so that the position of the external speakers can be conveniently and flexibly placed according to the needs of live performances.

In one embodiment, the electronic musical instrument of the present invention may further include a control panel, the control panel is connected to the main control unit through a line interface, and is configured to perform function settings on the electronic musical instrument. In one embodiment, the control panel may include, for example, a display screen, a switch button for different musical instruments, a volume button, and other functional modules. The display screen is configured to display the current performance status of the electronic musical instrument. The switching keys of different kinds of musical instruments can be used to select the playing modes of different kinds of musical instruments such as xylophone, marimba, vibraphone, electronic organ, electronic drum or gong. The volume button is connected with the power amplifier, so as to be configured to control the volume of the output sound of the musical instrument.

In one embodiment, the electronic musical instrument of the present invention may further include a power supply module, and the power supply module may implement power supply to the electronic musical instrument in various ways. For example, but not limited to, the electronic musical instrument of the present invention can be powered by external mains and a transformer unit is provided inside the power module; the electronic musical instrument can also be powered by setting a power adapter. In addition, the electronic musical instrument of the present invention can also be powered by arranging a battery box on the piano body and using dry batteries.

The working principle of the electronic musical instrument of the present invention will be described in detail below by taking the marimba as an example and in conjunction with the accompanying drawings 1 to 6 .

When the player needs to use the electronic musical instrument of the present invention as a marimba, firstly, the flexible circuit board can be opened and tiled on the table. Next, several flexible circuit boards are assembled with the body to form a 61-key marimba. After the hardware connection is completed, the player needs to set the electronic musical instrument of the present invention as a marimba by pressing keys on the control panel.

At the beginning of the performance, the player strikes the key with the hammer, for example, the key represented by the note number C. Since the second magnetic induction signal generated on the hammer triggers the magnetic induction area located under the key, the intensity of the first magnetic induction signal generated by the magnetic induction area changes. Further, the change of the signal strength of the magnetic induction area leads to the change of the current in the first magnetic induction coil, and the control unit receives the current change and processes it, so as to distinguish and locate the magnetic induction area.

Next, the A/D conversion module receives the analog electrical signal sent from the magnetic induction area, and after a series of processing such as sampling, quantization and encoding, converts the analog electrical signal into a digital electrical signal. Then, the digital electrical signal is processed by a filtering module, so as to effectively filter out high-frequency and low-frequency interference signals. After that, the control unit performs a table lookup in the IC sound source memory to acquire the sound source data [0] associated with the key of the sound source number C, and outputs the sound source data [0] to the power amplifier.

Then, the power amplifier processes the received sound source data [0] signal through the preamplifier circuit, the drive amplifying circuit and the final power amplifier circuit respectively, and finally amplifies the signal of the sound source data [0]. The amplified signal of the sound source data [0] can be transmitted to the speaker by wired or wireless means for playback, and finally the listener can hear the sound produced by hitting the key of the sound source number C. In particular, if the player needs to connect the electronic musical instrument of the present invention to a computer or other electronic musical instruments, so as to perform music learning or joint performance through APP software, he can connect with the above-mentioned device through a Bluetooth module or a MIDI interface.

It should be understood that the terms "first", "second", "third" and "fourth" in the claims, description and drawings of the present invention are used to distinguish different objects, rather than to describe a specific order . The terms "comprising" and "comprising" used in the description and claims of the present invention indicate the presence of the described features, integers, steps, operations, elements and/or components, but do not exclude one or more other features, integers , step, operation, element, component and/or the presence or addition of a collection thereof.

It should also be understood that the terminology used in this specification of the present invention is for the purpose of describing particular embodiments only, and is not intended to limit the present invention. As used in the present specification and claims, the singular forms "a," "an," and "the" are intended to include the plural unless the context clearly dictates otherwise. It will be further understood that, as used in the present specification and claims, the term "and/or" refers to and including any and all possible combinations of one or more of the associated listed items.

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

Although the embodiments of the present invention are as described above, the above contents are only examples adopted to facilitate understanding of the present invention, and are not intended to limit the scope and application scenarios of the present invention. Any person skilled in the technical field of the present invention, without departing from the spirit and scope disclosed by the present invention, can make any modifications and changes in the form and details of the implementation, but the scope of the patent protection of the present invention is , still subject to the scope defined by the appended claims.

Claims

An electronic musical instrument comprising:

a plurality of magnetic induction regions, wherein each magnetic induction region is configured to generate a first magnetic induction signal associated therewith when triggered;

a sound source memory, which is configured to store sound source data corresponding to each of the magnetic induction regions;

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

A control unit configured to:

determining an associated magnetic induction region according to the first magnetic induction signal;

Acquiring sound source data corresponding to the associated magnetic induction zone from the sound source memory; and

The output unit is controlled to output a sound signal corresponding to the sound source data.
The electronic musical instrument of claim 1, wherein the triggering comprises contact triggering and/or non-contact triggering, wherein the contact triggering comprises performing a blow to one and/or more of the plurality of magnetic induction zones and/or triggers caused by presses.
The electronic musical instrument of claim 2, wherein the sound source data includes sound source data for each of a plurality of musical instruments, and the control unit is further configured to:

The magnetic induction area is configured according to the expected at least one musical instrument so as to output an acoustic signal associated with the expected musical instrument when the magnetic induction area is triggered.
9. The electronic musical instrument of claim 1, wherein each of the plurality of magnetic induction regions includes a respective first magnetic induction circuit to generate the associated first magnetic induction signal when triggered.
The electronic musical instrument according to claim 1, further comprising a trigger for triggering the magnetic induction area, so that the triggered magnetic induction area generates the first magnetic induction signal.
The electronic musical instrument of claim 5, wherein the trigger comprises:

The second magnetic induction circuit is used for generating a second magnetic induction signal, so that when the triggering member triggers the magnetic induction area, the triggered magnetic induction area generates the first magnetic induction signal.
The electronic musical instrument of claim 1, wherein the control unit comprises:

a conversion unit configured to convert the first magnetic induction signal into an electrical signal; and

A processing unit configured to:

Acquiring sound source data associated with the magnetic induction area from the sound source memory according to the electrical signal; and

The output unit is controlled to output the sound signal corresponding to the sound source data.
The electronic musical instrument according to claim 1, wherein the plurality of magnetic induction areas are made of a flexible circuit board, wherein the flexible circuit board is a whole circuit board or is formed by splicing a plurality of sub-circuit boards.
The electronic musical instrument according to claim 1, further comprising a wired transmission interface and/or a wireless transmission interface to provide extended functions with external devices.
The electronic musical instrument according to any one of claims 1 to 9, further comprising a control panel and/or a power supply module, wherein the control panel is connected to the control unit and configured to perform function settings on the electronic musical instrument , and the power module is configured to supply power to the electronic musical instrument.
A key structure for an electronic musical instrument, comprising:

multiple keys;

a plurality of magnetic induction areas disposed below the keys, wherein each magnetic induction area is configured to generate a first magnetic induction signal associated therewith when triggered; and

A conversion unit is connected to the magnetic induction area and configured to convert the first magnetic induction signal into an electrical signal.
The key structure of claim 11, wherein the triggering comprises contact triggering and/or non-contact triggering, wherein the contact triggering comprises performing a stroke on one and/or more of the plurality of magnetic induction zones and/or triggers caused by presses.
12. The key structure of claim 11, wherein each magnetic induction region of the plurality of magnetic induction regions includes a respective first magnetic induction circuit to generate the associated first magnetic induction signal when triggered.
The key structure according to claim 11, further comprising a trigger for triggering the magnetic induction area, so that the triggered magnetic induction area generates the first magnetic induction signal.
The key structure of claim 14, wherein the trigger comprises:

The second magnetic induction circuit is used for generating a second magnetic induction signal, so that when the triggering member triggers the magnetic induction area, the triggered magnetic induction area generates the first magnetic induction signal.
The key structure according to claim 11, wherein the plurality of magnetic induction regions are arranged on a flexible circuit board, wherein the flexible circuit board is a whole circuit board or is formed by splicing a plurality of sub-circuit boards.
The key structure of claim 16, wherein the flexible circuit board comprises a flexible circuit board or a thin-film circuit board, and includes one or more keyboard module interfaces to realize splicing of the plurality of sub-circuit boards.
The key structure according to claim 11, further comprising a wired transmission interface and/or a wireless transmission interface for connecting with an external device and transferring the data of the electrical signal to the external device.
The key structure of claim 18, further comprising a control panel configured to perform function settings on the external device.
19. The key structure according to any one of claims 11-19, wherein the plurality of keys are made of composite material and arranged in two rows, wherein the first row is arranged as a semitone and the second row is arranged as a whole tone.