Electronic stringless guitar

Abstract

This application discloses an electronic stringless guitar, including a main unit, a main control module, an internal storage module, and an expansion storage module. The main control module is located within the main unit. The internal storage module is located within the main unit and electrically connected to the main control module. The internal storage module is used to store and process first sound source data. The expansion storage module is pluggably connected to the main unit and electrically connected to the main control module. The expansion storage module is used to store and process second sound source data. The main control module is used to select either the first or second sound source data according to a control signal to respond to the user's playing. The electronic stringless guitar proposed in this application, through the additional expansion storage module, assists the internal storage module in sharing some of the sound source data storage and processing, thereby enabling the electronic stringless guitar to have a larger sound source data storage capacity and faster processing speed, which is beneficial to improving the performance of the electronic stringless guitar and thus better meeting user needs.

Description

Technical Field

[0001] This application relates to the field of electronic musical instrument technology, and more specifically, to an electronic stringless guitar. Background Technology

[0002] The electronic stringless guitar is a relatively new musical instrument. Users press the frets on the fingerboard module with their fingers, simultaneously triggering the plucking module, which in turn controls the sound chamber module to produce the corresponding musical sounds. However, with the development of intelligent musical instruments, users' demands for audio quality, timbre, and other aspects have gradually increased, and the performance of existing electronic wireless guitars can no longer meet these needs. Utility Model Content

[0003] This application provides an electronic stringless guitar to solve at least one of the aforementioned technical problems.

[0004] The electronic stringless guitar according to the embodiments of this application includes: Host; The main control module is located within the host computer. An internal storage module is disposed within the host and electrically connected to the main control module. The internal storage module is used to store and process the first audio source data. An expansion storage module is provided, which is pluggably connected to the host and electrically connected to the main control module. The expansion storage module is used to store and process second audio source data. The main control module is used to select the first sound source data or the second sound source data according to the control signal to respond to the user's playing.

[0005] The electronic stringless guitar proposed in this application, by adding an additional storage module, assists the internal storage module in sharing some of the sound source data storage and processing. Compared with processing a large amount of sound source data through a single storage module, the electronic stringless guitar of this application has a larger sound source data storage capacity and a faster processing speed, which is conducive to improving the performance of the electronic stringless guitar and thus better meeting the needs of users.

[0006] In some embodiments, the host includes a connection port through which the expansion storage module is pluggably connected to the host, the connection port including an SPI interface that communicates with the expansion storage module.

[0007] Thus, the connection port facilitates the pluggable connection of the expanded storage module.

[0008] In some embodiments, the connection port includes an I2S interface that communicates with the main control module.

[0009] Therefore, setting up an I2S interface is beneficial for achieving rapid transmission of data from the second audio source.

[0010] In some embodiments, the electronic stringless guitar further includes a sound cavity module and a sound card module disposed within the host unit, wherein the sound cavity module is electrically connected to the sound card module, and the sound card module is electrically connected to the main control module.

[0011] Therefore, setting up a sound card module can assist the sound cavity module in signal processing, which is beneficial to improving sound quality.

[0012] In some embodiments, the electronic stringless guitar further includes an earphone / microphone jack and an external amplifier jack, which are electrically connected to the sound card module.

[0013] Therefore, adding headphone / microphone jacks and external amplifier jacks for connecting headphones, microphones, or amplifier speakers helps meet more user needs.

[0014] In some embodiments, the electronic stringless guitar further includes an OTG module disposed within the main unit, the OTG module being electrically connected to the main control module.

[0015] This adds data transmission functionality to the electronic stringless guitar, facilitating the transmission of data between the electronic stringless guitar and the outside world.

[0016] In some embodiments, the electronic stringless guitar further includes a battery module, a first charging module, and a transmission interface disposed within the main unit. The battery module is electrically connected to the main control module, the first charging module is electrically connected to the battery module, and the transmission interface is electrically connected to both the OTG module and the first charging module.

[0017] In this way, the OTG module and the first charging module share a single transmission interface, which helps to simplify the structure of the electronic stringless guitar.

[0018] In some embodiments, the electronic stringless guitar further includes a second charging module disposed within the main unit, the second charging module being electrically connected to the battery module.

[0019] Thus, setting up two charging modules creates a redundant design, which is beneficial for dealing with more charging scenarios and charging needs.

[0020] In some embodiments, the second charging module is a wireless charging module or a wired contact charging module.

[0021] This increases the selection of more different charging methods, making it easier to charge in different usage scenarios.

[0022] In some embodiments, the electronic stringless guitar further includes a fingerboard module and a fingerboard controller disposed within the main unit. The fingerboard controller is electrically connected to the fingerboard module to control the fingerboard module, and the fingerboard controller is electrically connected to the main control module.

[0023] Therefore, adding a fingerboard controller to control the fingerboard module helps to reduce the burden on the main control module.

[0024] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description

[0025] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein: Figure 1 This is a schematic diagram of the electronic stringless guitar according to an embodiment of this application; Figure 2 This is a schematic diagram of the structure of the electronic stringless guitar according to an embodiment of this application; Figure 3 This is a schematic diagram of the electronic stringless guitar according to an embodiment of this application.

[0026] Key component symbols: Electronic stringless guitar 100, main unit 10, connection port 11, SPI interface 12, I2S interface 13, main control module 20, internal storage module 30, expansion storage module 40, sound chamber module 51, sound card module 52, headphone / microphone interface 53, external amplifier interface 54, OTG module 61, battery module 62, first charging module 63, transmission interface 64, second charging module 65, fingerstyle plate module 70, pitch knob 71, fingerstyle plate press array 72, indicator light array 73, fingerstyle plate controller 80. Detailed Implementation

[0027] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. In the description of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] This disclosure provides many different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described herein. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0031] The electronic stringless guitar is a relatively new musical instrument. Users press the frets on the fingerboard module with their fingers, simultaneously triggering the plucking module, which in turn controls the sound chamber module to produce the corresponding musical sounds. However, with the development of intelligent musical instruments, users' demands for audio quality, timbre, and other aspects have gradually increased, and the performance of existing electronic wireless guitars can no longer meet these needs.

[0032] Please see Figure 1 and Figure 2 The electronic stringless guitar 100 of this application includes a host 10, a main control module 20, an internal storage module 30, and an extended storage module 40. The main control module 20 is disposed within the host 10. The internal storage module 30 is disposed within the host 10 and electrically connected to the main control module 20. The internal storage module 30 is used to store and process first sound source data. The extended storage module is pluggably connected to the host 10 and electrically connected to the main control module 20. The extended storage module is used to store and process second sound source data. The main control module 20 is used to select either the first sound source data or the second sound source data according to a control signal to respond to the user's playing.

[0033] The electronic stringless guitar 100 proposed in this application, by adding an additional storage module 40, assists the internal storage module 30 in sharing some of the sound source data storage and processing. Compared with processing a large amount of sound source data through a single storage module, the electronic stringless guitar 100 of this application has a larger sound source data storage capacity and a faster processing speed, which is conducive to improving the performance of the electronic stringless guitar 100 and thus better meeting the needs of users.

[0034] Specifically, the main control module 20 is the core control unit of the device, equivalent to a combination of the instrument's "brain" and "audio processor." It integrates sensor signal processing, timbre synthesis, intelligent interaction, and communication functions to achieve a fusion of stringless playing and diverse musical expression. In this embodiment, the main control module 20 receives signals from the fingerstyle board module 70, selects the first or second sound source data from the internal storage module 30 or the extended storage module according to control signals, drives the sound card module 52 for audio processing, and finally outputs high-quality sound through the sound cavity module 51.

[0035] Optionally, the main control module 20 can be equipped with an ARM Cortex-M7 architecture processor with a working frequency of up to 400MHz and 512KB of embedded SRAM, which can process multi-track audio data streams in real time.

[0036] The internal storage module 30 is a hardware unit in the electronic stringless guitar 100 used for persistent data storage. It integrates storage technologies such as flash memory and EEPROM to save data such as tone libraries, user settings, and performance records, ensuring that the device can retain key information even after power failure.

[0037] In this embodiment, the internal storage module 30 is directly soldered onto the main control module 20. The internal storage module 30 is pre-loaded with the first sound source data as a basic sound source library to meet the user's daily performance and practice needs. Meanwhile, the fixed design ensures that core data can be loaded quickly upon system startup, improving the device's response speed.

[0038] The expansion storage module 40 is a hardware or software component in the electronic stringless guitar 100 used to expand storage capacity. It allows users to store more sound libraries, presets, performance records, user settings, and other data, thereby enhancing the device's intelligence and expandability. In this embodiment, the expansion storage module 40 of the electronic stringless guitar 100 can be implemented using external storage devices such as SD cards or USB flash drives. Specifically, the expansion storage module 40 can be connected via a USB interface or a dedicated slot. External storage devices such as SD cards or USB flash drives can easily expand storage space to tens of GB or even TB levels, suitable for storing more sound libraries, performance data, or user-defined content. Furthermore, external storage devices such as SD cards or USB flash drives are plug-and-play, requiring no complex setup, and users can replace storage devices at any time to flexibly expand functionality. It should be noted that frequent plugging and unplugging may cause interface wear; therefore, connection stability should be checked regularly to avoid poor contact.

[0039] In some embodiments, the extended storage module 40 can also be a cloud storage service, connecting to a cloud platform (such as Google Drive or Dropbox) via Wi-Fi or Bluetooth to achieve remote data storage and synchronization. Cloud backup not only prevents local data loss and is suitable for storing important performance records or creative content, but users can also access cloud data anytime on devices such as mobile phones and computers, achieving seamless switching. It should be noted that cloud data cannot be accessed in an offline environment, so frequently used content should be cached locally in advance.

[0040] In the embodiments of this application, the first sound source data and the second sound source data can be sound sampling data with different timbres, such as sampling of each single note or chord emitted by a piano, sampling of each single note or chord emitted by a guitar, sampling of single notes or chords emitted by other instruments, sampling of musical sound fragments emitted by special rhythmic patterns, etc.

[0041] In this embodiment, both the first and second sound source data include multiple different sound source data. When the user plays, the main control module 20 can select any one of the first or second sound source data according to the control signal to respond to the user's playing. The control signal can be a command issued by the user, a system default selection, or other signals that require selection of sound source data.

[0042] Please see Figure 1 and Figure 3 In some embodiments, the host 10 includes a connection port 11, through which the expansion storage module is pluggably connected to the host 10. The connection port 11 includes an SPI interface 12, which communicates with the expansion storage module.

[0043] Thus, the connection port 11 facilitates the pluggable connection of the expansion storage module.

[0044] Specifically, in this embodiment, since the extended storage module is an external storage device such as an SD card or a USB flash drive, the connection port 11 is an interface for the SD card or USB flash drive or other dedicated slot. Furthermore, the connection port 11 is provided with an SPI interface 12, and the connection port 11 is connected to the extended storage module through the SPI interface 12.

[0045] SPI (Serial Peripheral Interface) is a serial peripheral interface primarily used for data transmission between the main control module 20 and the extended storage module. In this embodiment, the SPI pin is used for storage management, responsible for writing and updating the second audio source data in the extended storage module. Its transmission rate can reach up to 50MB / s, which is beneficial for ensuring fast loading of large audio source files.

[0046] In some embodiments, the connection port 11 includes an I2S interface 13, which communicates with the main control module 20.

[0047] Therefore, setting up I2S interface 13 is beneficial for achieving fast transmission of data from the second audio source.

[0048] In this embodiment, the connection port 11 is provided with an I2S interface 13, and the connection port 11 is connected to the expansion storage module through the I2S interface 13. Specifically, I2S (Inter-IC Sound, also written as IIS) is an audio data transmission protocol used for data interaction between the main control module 20 and the expansion storage module. In this embodiment, the I2S pin is used for audio playback, that is, to transmit the second audio source data stored in the expansion storage module to the main control module 20. It has low latency in transmitting audio data, reducing audio playback stuttering. The I2S pin uses a 16-bit / 44.1kHz sampling rate, which is beneficial to improving sound quality.

[0049] Please see Figure 3 In some embodiments, the electronic stringless guitar 100 also includes a sound cavity module 51 and a sound card module 52 disposed in the host 10. The sound cavity module 51 is electrically connected to the sound card module 52, and the sound card module 52 is electrically connected to the main control module 20.

[0050] Thus, the sound card module 52 can assist the acoustic cavity module 51 in signal processing, which is beneficial to improving sound quality.

[0051] Specifically, the sound card module 52 is the core component of the electronic stringless guitar 100 responsible for audio signal processing. Its functions include audio input / output, signal conversion (such as analog to digital), tone synthesis, and effects processing. In the electronic stringless guitar 100, the sound card module 52 is responsible for converting the performance signals captured by the sensor into high-quality audio output, and may also integrate a digital signal processor (DSP) to achieve rich tones and effects.

[0052] The sound chamber module 51 simulates the components of a traditional guitar soundbox, responsible for amplifying audio and shaping tone. Its functions include simulating the resonance effect of a guitar through physical structures (such as the chamber and speaker) or digital algorithms. In the electronic stringless guitar 100, the sound chamber module 51 may exist in the form of a physical speaker combined with a sound chamber, or it may simulate the resonance effect through digital signal processing, affecting the tone and volume of the instrument.

[0053] In this embodiment, the sound card module 52 is responsible for processing audio signals, which helps improve sound quality. Secondly, the sound card module 52 supports digital signal processing and can integrate various audio effects such as reverb, chorus, and distortion. Users can also expand the functionality with new sound effects through software updates, providing excellent scalability.

[0054] It is important to note that the sound card module 52 requires an independent regulated power supply to avoid noise coupling, and should not share a power supply with high-power equipment. Furthermore, when used in environments with strong electromagnetic fields (such as near stage lighting equipment), a metal shield should be added to the sound cavity module 51 to reduce electromagnetic interference. Finally, thermal management is also crucial. Under heavy use, the temperature of the sound card module 52 may rise; therefore, it is essential to ensure adequate ventilation through the heat dissipation holes of the host unit 10 to prevent overheating and performance degradation.

[0055] Please see Figure 3 In some embodiments, the electronic stringless guitar 100 also includes a headphone / microphone interface 53 and an external amplifier interface 54, which are electrically connected to the sound card module 52.

[0056] Thus, adding a headphone / microphone jack 53 and an external amplifier jack 54 for connecting headphones, microphones, or amplifier speakers helps to meet more of the user's needs.

[0057] Specifically, in this embodiment, the headphone microphone interface 53 enables the electronic stringless guitar 100 to support silent practice, avoiding disturbing others, and is suitable for home or late-night use; the external amplifier interface 54 can connect to professional audio equipment to meet the needs of stage performances or band ensembles.

[0058] On the other hand, the headphone / microphone jack 53 and the external amplifier jack 54 are directly connected to the sound card module 52, utilizing the sound card's high-precision ADC / DAC (such as 24bit / 192kHz) to ensure the fidelity of audio input and output and reduce signal loss. Furthermore, the external amplifier jack 54 is compatible with various power amplifiers, allowing users to choose portable speakers or high-power stage equipment according to their needs without the need for additional converters.

[0059] In this embodiment, the headphone / microphone interface 53 is a 3.5mm interface, and the external amplifier interface 54 is a 6.35mm interface.

[0060] Please see Figure 3 In some embodiments, the electronic stringless guitar 100 also includes an OTG module 61 disposed in the host 10, which is electrically connected to the main control module 20.

[0061] This adds data transmission functionality to the electronic stringless guitar 100, facilitating data transmission between the electronic stringless guitar 100 and the outside world.

[0062] Specifically, the OTG module 61 (On-The-Go module) is a technology based on the USB interface standard that allows electronic devices to communicate directly with each other without a host 10 (such as a computer), enabling data exchange or functional expansion.

[0063] In this embodiment, the OTG module 61 allows the guitar to connect directly to USB devices (such as USB flash drives, mobile phones, MIDI controllers, USB audio interfaces, etc.) without the need for a computer intermediary. This enables users to quickly import accompaniment tracks, export recording files, or connect MIDI devices to expand performance capabilities. Simultaneously, it reduces reliance on external computers, making it suitable for outdoor performances or mobile creation scenarios.

[0064] In some embodiments, an OTG interface supporting USB 2.0 or higher standards can be selected, thus meeting the fast read and write requirements of high-definition audio (such as 24bit / 192kHz).

[0065] Please see Figure 3 In some embodiments, the electronic stringless guitar 100 further includes a battery module 62, a first charging module 63, and a transmission interface 64 disposed in the host 10. The battery module 62 is electrically connected to the main control module 20, the first charging module 63 is electrically connected to the battery module 62, and the transmission interface 64 is electrically connected to the OTG module 61 and the first charging module 63, respectively.

[0066] Thus, the OTG module 61 and the first charging module 63 share a single transmission interface 64, which helps to simplify the structure of the electronic stringless guitar 100.

[0067] Specifically, in this embodiment, the first charging module 63 and the OTG module 61 share a common port, reducing the number of physical interfaces on the host 10, simplifying hardware design, and lowering production costs. Users can alternate between charging and data transfer operations on the same port without switching between multiple ports, improving efficiency. Furthermore, fewer ports mean a more compact host 10 design, making it easier to carry and store, suitable for users who frequently need to move around for performances. Inside the host 10, the shared port reduces the space occupied by the circuit board, freeing up space for other components (such as a larger battery or a more complex audio processing unit).

[0068] In other embodiments, separate ports may be provided for the charging module and the OTG module 61, which increases hardware complexity and cost, but improves convenience in specific scenarios (such as simultaneous charging and data transmission).

[0069] In this embodiment of the application, the transmission interface 64 is a Type-C interface.

[0070] Please see Figure 3 In some embodiments, the electronic stringless guitar 100 also includes a second charging module 65 disposed within the host 10, the second charging module 65 being electrically connected to the battery module 62.

[0071] Thus, setting up two charging modules creates a redundant design, which is beneficial for dealing with more charging scenarios and charging needs.

[0072] Specifically, in this embodiment, a second charging module 65 is added, forming a dual charging module. This provides users with more options when charging the electronic stringless guitar 100, making it suitable for a wider range of usage environments. Furthermore, when the first charging module 63 (sharing a port with the OTG connector) fails due to frequent plugging and unplugging or malfunction, the second charging module 65 serves as a backup, ensuring continuous device availability. In addition, users can charge the battery via the second charging module 65 while using OTG functionality (such as connecting a USB flash drive or mobile phone), achieving a seamless "use and charge simultaneously" experience.

[0073] It should be noted that using two charging modules to power the battery at the same time may cause overload or misjudgment by the battery management system (BMS). Therefore, it is recommended to charge the battery using a single module first.

[0074] Please see Figure 3 In some embodiments, the second charging module 65 is a wireless charging module or a wired contact charging module.

[0075] This increases the selection of more different charging methods, making it easier to charge in different usage scenarios.

[0076] Specifically, wireless charging modules are based on the principles of electromagnetic induction or magnetic resonance. They achieve contactless power transfer through the electromagnetic field interaction between the receiver coil built into the main unit 10 and the external charging pad (or transmitter). Users simply place the guitar on the charging pad to automatically begin charging, eliminating the need for plugging and unplugging cables, offering high convenience. However, wireless charging modules have relatively low charging efficiency and high cost.

[0077] Wired contact charging modules connect to the charger via physical interfaces (such as USB-C or DC interfaces) to transfer power. They support higher charging power (such as 65W or 100W under the PD fast charging protocol), making them suitable for rapid charging or prolonged high-load use. While wired contact charging modules offer high charging efficiency and low cost, their interfaces are prone to wear and tear, the power supply process is constrained by the cable, and manual power disconnection is required during charging. Furthermore, prolonged plugging in may increase the risk of overheating.

[0078] In this embodiment, the second charging module 65 is either a wireless charging module or a wired contact charging module. The specific type of the second charging module 65 can be selected based on user needs (such as performance frequency, usage scenario, cost sensitivity) to choose the most suitable charging solution. Further details are omitted here.

[0079] In other embodiments, both the wireless charging module and the wired contact charging module can be applied to the electronic stringless guitar 100.

[0080] Please see Figure 3 In some embodiments, the electronic stringless guitar 100 also includes a fingerboard module 70 and a fingerboard controller 80 disposed in the main unit 10. The fingerboard controller 80 is electrically connected to the fingerboard module 70 to control the fingerboard module 70, and the fingerboard controller 80 is electrically connected to the main control module 20.

[0081] Thus, adding a fingerboard controller 80 to control the fingerboard module 70 helps to reduce the burden on the main control module 20.

[0082] Specifically, the fingerboard module 70 is a key component in the electronic stringless guitar 100 that simulates the fingerboard of a traditional guitar. It typically consists of a pressure sensor array, a touch-sensitive layer, or an optical sensor, capable of accurately capturing the position, pressure, and sliding trajectory of the user's fingers on the "fingerboard." This data is transmitted in real-time to the main control module 20, where it is converted into corresponding pitch, tone changes, or playing techniques (such as slides and vibrato), thereby recreating the playing experience of a real guitar. In this embodiment, the fingerboard module 70 includes a pitch-changing knob 71, a fingerboard pressing array 72, and an indicator light array 73, all of which are electrically connected to the fingerboard controller 80.

[0083] The fingerboard controller 80 serves as a bridge connecting the fingerboard module 70 and the main control module 20. It is responsible for processing the raw data (such as coordinates and pressure values) collected by the sensors, converting it into standard MIDI signals or digital audio commands through algorithms, and controlling parameters such as the sensitivity and response speed of the fingerboard module 70.

[0084] In this embodiment, the fingerboard controller 80 serves as a dedicated processing unit for the fingerboard module 70. It can independently undertake tasks such as sensor data acquisition, preprocessing (e.g., filtering, coordinate mapping), and real-time response, thereby preventing the main control module 20 from being overloaded due to processing a large amount of detailed data and ensuring the smoothness of core functions such as audio processing and sound effect synthesis.

[0085] In the description of this specification, the references to "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0086] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the stated features. In the description of this application, "multiple" means at least two, such as two or three, unless otherwise explicitly specified.

[0087] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An electronic stringless guitar, characterized in that, include: Host; The main control module is located within the host computer. An internal storage module is disposed within the host and electrically connected to the main control module. The internal storage module is used to store and process the first audio source data. An expansion storage module is provided, which is pluggably connected to the host and electrically connected to the main control module. The expansion storage module is used to store and process second audio source data. The main control module is used to select the first sound source data or the second sound source data according to the control signal to respond to the user's playing.

2. The electronic stringless guitar according to claim 1, characterized in that, The host includes a connection port, and the expansion storage module is pluggably connected to the host through the connection port. The connection port includes an SPI interface, and the SPI interface communicates with the expansion storage module.

3. The electronic stringless guitar according to claim 2, characterized in that, The connection port includes an I2S interface, which communicates with the main control module.

4. The electronic stringless guitar according to claim 1, characterized in that, The electronic stringless guitar also includes a sound cavity module and a sound card module disposed in the host. The sound cavity module is electrically connected to the sound card module, and the sound card module is electrically connected to the main control module.

5. The electronic stringless guitar according to claim 4, characterized in that, The electronic stringless guitar also includes an earphone / microphone interface and an external amplifier interface, which are electrically connected to the sound card module.

6. The electronic stringless guitar according to claim 1, characterized in that, The electronic stringless guitar also includes an OTG module installed in the main unit, which is electrically connected to the main control module.

7. The electronic stringless guitar according to claim 6, characterized in that, The electronic stringless guitar also includes a battery module, a first charging module, and a transmission interface disposed in the main unit. The battery module is electrically connected to the main control module, the first charging module is electrically connected to the battery module, and the transmission interface is electrically connected to the OTG module and the first charging module respectively.

8. The electronic stringless guitar according to claim 7, characterized in that, The electronic stringless guitar also includes a second charging module disposed within the main unit, the second charging module being electrically connected to the battery module.

9. The electronic stringless guitar according to claim 8, characterized in that, The second charging module is either a wireless charging module or a wired contact charging module.

10. The electronic stringless guitar according to claim 1, characterized in that, The electronic stringless guitar also includes a fingerboard module and a fingerboard controller disposed in the main unit. The fingerboard controller is electrically connected to the fingerboard module to control the fingerboard module, and the fingerboard controller is electrically connected to the main control module.

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