Method, medium and equipment for realizing wireless internal recording and live broadcasting of electronic musical instrument

Abstract

The invention provides a method for realizing wireless internal recording and live broadcasting of an electronic musical instrument, a medium and equipment, and is characterized in that a wireless processing system comprising a transmitting end and one or more receiving ends is constructed, the transmitting end is provided with an input interface and other modules matched with an electronic musical instrument interface, and the receiving end is provided with a second wireless communication module and other modules and a USBOTG interface. An electronic musical instrument analog audio signal is accessed to a transmitting end and converted into a discrete digital signal through an ADC, a first DSP processes and generates a low-delay standardized digital audio code stream according to parameters issued by a first main control unit, and then the low-delay standardized digital audio code stream is modulated into a wireless radio frequency signal through a first wireless communication module to be transmitted; and after the receiving end receives the signal and demodulates the signal, the second DSP processes the signal to generate an audio stream capable of being output, and finally transmits the audio stream to a terminal or equipment through the USBOTG interface to realize wireless internal recording and live broadcasting of the electronic musical instrument.

Description

Technical Field

[0001] This application relates to the field of wireless communication technology, and in particular to a method, medium, and device for wireless recording and live streaming of electronic musical instruments. Background Technology

[0002] With the popularization of electronic wind instruments and the expansion of online music dissemination scenarios, electronic wind instruments and electronic saxophones (hereinafter referred to as "electronic saxophones") have gradually become important tools for music lovers' daily practice, creation, and online sharing due to their rich tone adjustment capabilities and portable performance characteristics. Among them, "wireless internal recording" and "live streaming" are core application scenarios, and users' demands for the "convenience of connection," "transmission stability," and "multi-scenario adaptability" of devices are becoming increasingly prominent. However, existing technologies still have significant technical shortcomings in adapting to the wireless internal recording and live streaming scenarios of electronic wind instruments and electronic saxophones, as follows:

[0003] 1. The constraints of wired connections: Traditional electric wind instruments and electric saxophones rely on wired connections such as 3.5mm audio cables or RCA cables to connect to recording devices (such as voice recorders or computers) or live streaming terminals (such as mobile phones or tablets). This connection method not only severely restricts the performer's range of motion—for example, when performing outdoors, they must be fixed next to the equipment and cannot move freely to display their playing posture—but is also prone to audio signal interruption due to cable pulling and poor interface contact. Especially in dynamic performance scenarios, the constraints of wired connections seriously disrupt the continuity of the performance and the user experience.

[0004] 2. Adaptation defects of wireless transmission technology: Although existing general-purpose wireless audio devices (such as ordinary Bluetooth adapters) can achieve wireless connection, they cannot meet the professional needs of electric wind instruments and electric saxophones. On the one hand, the latency is too high. The audio transmission latency of general-purpose Bluetooth devices generally exceeds the acceptable range for performers, resulting in the desynchronization of playing actions and audio output, which seriously affects the control of the performance rhythm and the interactive effect of live broadcast. On the other hand, the frequency band is limited and the anti-interference ability is weak. Most general-purpose devices only support the 2.4G frequency band, which is easily interfered with by WiFi, other Bluetooth devices, etc., and noise and disconnection are likely to occur during transmission, making it impossible to guarantee the internal recording quality and the stability of the live broadcast signal.

[0005] 3. Insufficient coverage of multi-scenario needs: Existing technologies are mostly limited to a single transmission mode of "one transmitter and one receiver," meaning that one transmitter can only correspond to one receiver. This cannot meet users' needs for "simultaneous live streaming on multiple platforms" (such as broadcasting on multiple short video platforms at the same time) or "simultaneous live streaming and internal recording." If users need to implement multi-scenario applications, they need to purchase multiple sets of wired or wireless equipment, which not only increases equipment costs but also requires cumbersome wiring and debugging operations, failing to meet the requirements for efficient and convenient use.

[0006] 4. Lack of Instrument-Specificity: The audio signals of electric wind instruments and electric saxophones are unique, containing rich high-frequency overtones and airflow details, and the output signal characteristics of different instrument models vary. Existing general-purpose wireless devices are not optimized for these characteristics, which can easily lead to excessive audio signal compression, loss of high-frequency overtones, or distortion due to improper signal adaptation, failing to reproduce the true timbre of the instrument and seriously affecting the quality of recorded content and the listening experience of live viewers.

[0007] In summary, existing technologies are insufficient to meet the comprehensive needs of electronic wind instrument and electric saxophone users for "convenient connection, low latency transmission, multi-scenario adaptation, and high-fidelity sound" in wireless recording and live streaming scenarios. There is an urgent need for a wireless recording and live streaming technology solution specifically designed for electronic wind instruments and electric saxophones to address the aforementioned technical deficiencies. Summary of the Invention

[0008] In view of this, this application provides a method, medium and device for wireless recording and live streaming of electronic musical instruments, the main purpose of which is to meet the technical requirements of convenient connection, low latency transmission, multi-scenario adaptation and sound fidelity for wireless recording and live streaming of electronic musical instruments.

[0009] According to one aspect of this application, a method for wireless recording and live streaming of electronic musical instruments is provided, comprising the following steps:

[0010] S1. Construct a wireless processing system adapted for audio transmission of electronic musical instruments, the wireless processing system comprising one transmitter and one or more receivers; the transmitter is configured with an input interface module adapted for electronic musical instrument interfaces, an analog-to-digital conversion module, a first digital signal processing module, a first wireless communication module, a first main control microcontroller unit, and a first hardware controller; the receivers are configured with a second wireless communication module, a second main control microcontroller unit, a second digital signal processing module, a second hardware controller, a USB_OTG interface, and an antenna module;

[0011] S2. The transmitter receives the analog audio signal output by the electronic musical instrument through the input interface module;

[0012] S3. The analog-to-digital converter (ADC) receives the analog audio signal, converts it into a discrete digital audio signal, and transmits it via I... 2 The S-bus transmits the signal to the first digital signal processing module;

[0013] S4. The first main control microcontroller unit calls the low-latency transmission algorithm and sends processing parameters to the first digital signal processing module DSP. The first digital signal processing module performs bandpass filtering, automatic gain control and noise suppression processing on the discrete digital audio signal based on the processing parameters to generate a low-latency standardized digital audio bitstream.

[0014] S5. The first main control microcontroller unit schedules the first wireless communication module to modulate the low-latency standardized digital audio stream into a wireless radio frequency signal. The first wireless communication module selects the operating frequency band and the appropriate modulation method according to actual needs, and avoids channel interference through an anti-interference mechanism. The first hardware controller cooperates with the first main control microcontroller unit to adjust the operating parameters of the transmitter, and the transmitter antenna module transmits the wireless radio frequency signal.

[0015] S6. Each receiving end receives wireless radio frequency signals through the antenna module. The second wireless communication module performs signal amplification and demodulation processing on the wireless radio frequency signals to obtain baseband audio signals and transmits them to the second digital signal processing module.

[0016] S7. The second main control microcontroller unit controls the second digital signal processing module to call the low-latency transmission algorithm to perform decompression, equalization and inverse quantization processing on the baseband audio signal, and at the same time ensures data integrity through a data verification mechanism to generate an output audio stream;

[0017] S8. Each receiving end, based on the coordinated control of the second hardware controller and the second main control microcontroller unit, transmits the output audio stream to the live streaming platform terminal or internal recording storage device through the USB_OTG interface, realizing single-platform or multi-platform live streaming and wireless internal recording of electronic musical instrument audio.

[0018] In one implementation, both the first wireless communication module and the second wireless communication module support UHF, 5.8G, or 2.4G civilian frequency bands and comply with national radio management regulations.

[0019] In one implementation, in step S2, the input interface module supports common audio interface types for electronic musical instruments and has a built-in audio detection and switching component to automatically identify the instrument's access status and switch to the corresponding signal path.

[0020] In one implementation, in step S4, the low-latency transmission algorithm reduces the total latency of the audio signal from the input of the transmitter to the output of the receiver by optimizing the digital signal processing parameters and encoding strategy, and controls the latency difference of the audio output by each receiver to be within a preset range when one transmitter corresponds to multiple receivers.

[0021] In one implementation, in step S5, the first wireless communication module adopts an adaptive modulation method for different operating frequency bands and has a built-in channel interference detection component. When the interference intensity of the current frequency band exceeds a preset value, it automatically switches to an idle frequency band and synchronously sends a frequency band switching command to the receiving end.

[0022] In one implementation, in step S7, the second digital signal processing module is further configured with a musical instrument timbre compensation component, which pre-stores corresponding compensation parameters for the timbre characteristics of different models of electronic musical instruments. It can be enabled by manual call or automatic matching to ensure the consistency between the output audio and the original sound of the instrument.

[0023] In one implementation, in step S8, the receiving end's USB_OTG interface supports high-speed data transmission and can simultaneously connect the live streaming terminal and the internal recording storage device, enabling live streaming and lossless format internal recording to proceed synchronously; and when the remaining capacity of the internal recording storage device is lower than a preset ratio, the receiving end triggers an alarm prompt and sends storage warning information back to the transmitting end.

[0024] In one implementation, step S9 is further included: the first hardware controller of the transmitter is configured with physical function buttons, including buttons related to power control, frequency band switching, device pairing, and volume adjustment; the transmitter is triggered to enter pairing mode through a preset operation, and the receiver can automatically search for and pair with the transmitter after being turned on, and the pairing status is displayed by an indicator light.

[0025] According to one aspect of this application, a storage medium is provided that stores a computer program, wherein the computer program is configured to execute the above-described method at runtime.

[0026] According to one aspect of this application, an electronic device is provided, including a memory and a processor, wherein the memory stores a computer program and the processor is configured to run the computer program to perform the methods described above.

[0027] Using the above technical solution, this application provides a method, medium, and device for wireless recording and live streaming of electronic musical instruments. The system comprises a wireless processing system with one transmitter and one or more receivers. The transmitter has modules such as an input interface adapted to electronic musical instrument interfaces, and the receivers have modules such as a second wireless communication module and a USB-OTG interface. The transmitter receives the analog audio signal from the electronic musical instrument, converts it to a discrete digital signal via an ADC, and a first DSP processes it according to parameters issued by a first main control unit to generate a low-latency standardized digital audio stream. This stream is then modulated into a wireless radio frequency signal by a first wireless communication module and transmitted. The receiver demodulates the received signal, and the second DSP processes it to generate an output audio stream. Finally, the stream is transmitted to a terminal or device via the USB-OTG interface, thus realizing wireless recording and live streaming of electronic musical instruments.

[0028] Compared with existing technologies, the proposed solution has at least the following technical advantages: 1. Low-latency transmission: By optimizing the DSP processing logic and wireless coding strategy through a low-latency transmission algorithm, and combining the low-interference characteristics of UHF, 5.8G, or 2.4G frequency bands, low-latency transmission of audio signals from wind instruments and electric saxophones is achieved, fully meeting the requirements of real-time performance and live interactive broadcasting; 2. Multi-scenario adaptation: Flexible switching between one-transmit-one-receive and one-transmit-multiple-receive modes can cover various scenarios such as single-platform live broadcasting, multi-platform live broadcasting, single-device internal recording, and "live broadcasting + internal recording synchronization". At the same time, the flexible selection of antenna modules (omnidirectional / directional) adapts to different usage environments such as indoors and outdoors; 3. High stability: Supports multi-band switching and anti-interference mechanisms, and can automatically select the optimal frequency band according to environmental interference conditions to avoid signal interruption or noise, ensuring the stability of live broadcasting and internal recording; 4. Ease of operation: Automatic pairing, status indicator feedback, and physical button operation reduce the user's operating threshold; wireless connection eliminates the constraints of cables, allowing performers to move freely within the signal coverage area, improving performance flexibility.

[0029] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0030] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0031] Figure 1 This illustration shows an application scenario diagram of a method for wireless recording and live streaming of electronic musical instruments provided in an embodiment of this application;

[0032] Figure 2 This illustration shows a block diagram of a transmitter device in a method for wireless recording and live streaming of electronic musical instruments according to an embodiment of this application.

[0033] Figure 3 This illustration shows a block diagram of a transmitter device in a method for wireless recording and live streaming of electronic musical instruments according to an embodiment of this application.

[0034] Figure 4 This paper illustrates a flowchart of a method for wireless recording and live streaming of electronic musical instruments according to an embodiment of this application.

[0035] In the diagram: 1. Transmitter; 2. Receiver. Detailed Implementation

[0036] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all of them. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present application can be combined with each other.

[0037] The following describes in detail the specific implementation scheme of "an implementation scheme for one-to-one or one-to-many wireless recording and live streaming function applied to electric blowpipes and electric styrofoams" in conjunction with the technical principles, hardware architecture and practical application scenarios of this application.

[0038] like Figure 1 The diagram illustrates an application scenario of a method for wireless recording and live streaming of electronic musical instruments according to an embodiment of this application. The scenario includes a transmitter 1 and a receiver 2. In this example, the transmitter can be built into an electronic musical instrument (e.g., a whistle or electric saxophone shown), and the receiver can be built into a recording device (e.g., a Magic Cloud device shown). Figure 2 As shown, the transmitting end specifically includes: an antenna, an ADC, a DSP, wireless communication, a main control MCU, and a hardware controller; as... Figure 3 The receiver shown specifically includes: an antenna, wireless communication, a main control MCU, a DSP, a hardware controller, and a USB_OTG.

[0039] This application constructs a wireless processing system consisting of "one transmitter + one or more receivers". All hardware modules and software algorithms are designed for the audio characteristics and usage scenarios of electric wind instruments and electric saxophones to ensure low latency, high stability and multi-scenario adaptability of wireless transmission. The specific architecture configuration is as follows.

[0040] 1. Transmitter hardware configuration and functions

[0041] As the core of audio signal acquisition and wireless transmission for electronic wind instruments and electronic horn, the transmitter's hardware module needs to realize the entire process of "accurate signal acquisition - efficient processing - stable transmission," and the specific configuration is as follows:

[0042] Input interface module: Adopting a universal design that adapts to the common audio interfaces of electric wind instruments and electric saxophones, it can be directly connected to the audio output of musical instruments without the need for additional adapters, ensuring that the analog audio signal of the instrument is connected without attenuation or distortion; at the same time, the built-in signal detection unit can automatically identify whether the instrument is connected. When not connected, it triggers the transmitter to enter a low-power mode, reducing power consumption and extending battery life.

[0043] Analog-to-digital converter (ADC): It uses audio-specific conversion components with high resolution and high sampling rate characteristics. It can completely capture the analog audio signals output by electric wind instruments and electric saxophones. In particular, it can accurately preserve the high-frequency harmonics and airflow details of the instruments, avoiding sound quality loss during the signal digitization process.

[0044] The first digital signal processing module (DSP) integrates low-latency transmission algorithms and serves as the core unit for audio signal processing. It can perform key processing such as bandpass filtering, automatic gain control (AGC), and noise suppression. It optimizes processing parameters for the audio characteristics of electronic wind instruments and electronic saxophones to ensure that the output digital audio signal has both fidelity and transmission efficiency.

[0045] The first wireless communication module supports UHF, 5.8G, or 2.4G civilian frequency bands (all in compliance with national radio management regulations) and can select the optimal frequency band based on the interference conditions of the usage environment. It has a built-in anti-interference unit that avoids external interference through frequency hopping spread spectrum or dynamic channel selection mechanisms to ensure the stability of wireless transmission.

[0046] The first main control microcontroller unit (MCU) serves as the control core of the transmitter, responsible for scheduling the coordinated work of the input interface module, ADC, DSP, and the first wireless communication module, issuing processing parameters (such as filter coefficients and coding rate), monitoring the working status of each module in real time (such as signal strength and battery power), and establishing synchronous communication with the receiver.

[0047] The first hardware controller is equipped with physical function buttons (such as power button, frequency band switching button, and pairing button) and LED status indicators. The buttons are used to manually trigger core functions (such as frequency band switching and device pairing). The indicator lights use different colors or flashing frequencies to reflect the status of the transmitter (such as a solid green light indicating normal operation and a flashing red light indicating low battery), improving the ease of operation.

[0048] 2. Receiver hardware configuration and functions

[0049] As the core of receiving, restoring, and outputting wireless audio signals, the receiver needs to achieve the functions of "stable signal reception - accurate restoration - multi-device adaptation". The specific configuration is as follows:

[0050] The second wireless communication module is fully compatible with the frequency band of the first wireless communication module of the transmitter. It has a built-in low-noise amplifier (LNA) component, which can improve the weak signal reception capability and ensure stable reception of wireless radio frequency signals in complex environments (such as outdoor multi-interference scenarios). It supports receiving frequency band switching commands from the transmitter to achieve synchronization of transmit and receive frequency bands.

[0051] The second main control microcontroller unit (MCU) is responsible for signal demodulation control, DSP processing scheduling, and bidirectional communication with the transmitter (such as feedback on reception status and request for signal retransmission); it also controls the working mode of the USB_OTG interface to achieve adaptive communication with live streaming terminals and internal recording storage devices.

[0052] The second digital signal processing module (DSP) integrates a self-developed low-latency transmission algorithm to perform decompression, equalization adjustment, and inverse quantization on the received baseband audio signal. At the same time, it ensures data integrity through data verification mechanisms (such as packet header recognition and CRC check) and restores the original sound details of the electronic wind instrument and electronic saxophone.

[0053] USB_OTG interface: As the core interface for audio output and data storage, it can connect live streaming platform terminals (such as mobile phones and computers) and internal recording storage devices (such as USB flash drives and external hard drives) at the same time, supporting "live streaming + internal recording" simultaneously without the need for additional adapters.

[0054] Antenna Module: Offers flexible selection options. For indoor scenarios, an omnidirectional PCB antenna can be selected (small size, easy to integrate, suitable for desktop live streaming scenarios), while for outdoor long-distance scenarios, an external IPEX directional antenna can be selected (wide signal coverage, suitable for outdoor performance live streaming scenarios), meeting the signal reception needs of different usage environments.

[0055] The second hardware controller is configured with an interrupt control unit and an alarm component. When the received signal strength is too low (e.g., the receiver is far from the transmitter) or the internal storage capacity is insufficient, an alarm is triggered (e.g., an LED flashing), and abnormal information is fed back to the transmitter via a wireless link, so that the user can adjust the device status in a timely manner.

[0056] The "one-to-one" and "one-to-many" modes will be explained below.

[0057] (I) Implementation process of the one-to-one transmission and one-to-receive mode

[0058] The one-to-one transmission and one-to-receive mode is suitable for single-platform live streaming (such as broadcasting only on a single short video platform) or single-device internal recording (such as storing performance audio only via USB flash drive). The specific implementation steps are as follows.

[0059] 1. Device pairing and initialization.

[0060] Press and hold the "pairing button" on the transmitter to trigger the transmitter to enter pairing mode. At this time, the LED indicator on the transmitter will flash rapidly.

[0061] When the receiver is turned on, the receiver's second wireless communication module automatically searches for nearby transmitters in pairing mode. After finding the target transmitter, it completes authentication and frequency band synchronization through the wireless link.

[0062] After successful pairing, the LED indicators on both the transmitter and receiver turn constantly lit, and the system automatically initializes each module (such as ADC startup and DSP loading of preset processing parameters) and enters the standby state.

[0063] 2. Audio signal acquisition and preprocessing.

[0064] Connect the audio output of the electric wind instrument or electric saxophone to the input interface module of the transmitter. After the signal detection unit of the input interface module recognizes the instrument being connected, it triggers the transmitter to switch from low power mode to working mode.

[0065] The transmitter's analog-to-digital converter (ADC) module receives the analog audio signal output from the musical instrument, converts it into a discrete digital audio signal, and then transmits it via I... 2 The S-bus (ensuring high-speed transmission of audio data) transmits the data to the first digital signal processing module (DSP).

[0066] 3. Low-latency audio processing and wireless transmission.

[0067] The first MCU at the transmitting end calls the self-developed low-latency transmission algorithm to send the processing parameters adapted to electric wind instruments and electric saxophones (such as the filter coefficient being optimized for the high-frequency overtones of the instruments and the coding rate balancing the transmission speed and sound quality) to the first DSP.

[0068] The first DSP performs bandpass filtering (filtering out low-frequency noise and high-frequency interference in the environment), automatic gain control (AGC, adjusting the signal amplitude to the standard transmission range), and noise suppression (dynamically adjusting the suppression threshold for airflow noise of the blowpipe / electric horn) on the discrete digital audio signal to generate a low-latency standardized digital audio bitstream.

[0069] The first MCU schedules the first wireless communication module to select the optimal frequency band based on the current environmental interference situation (e.g., in an indoor multi-WiFi environment, the 5.8G frequency band is preferred to avoid interference), modulates the digital audio stream into a wireless radio frequency signal, and transmits it by the transmitting antenna module.

[0070] 4. Audio signal reception and restoration.

[0071] The receiver receives the radio frequency signal through the antenna module. The second wireless communication module performs low-noise amplification (improving the signal-to-noise ratio of weak signals) and down-conversion demodulation on the signal to obtain the baseband audio signal, which is then transmitted to the second digital signal processing module (DSP).

[0072] The receiving end's second MCU controls the second DSP to call a self-developed low-latency algorithm to perform decompression (restoring compressed audio details), equalization adjustment (optimizing the timbre required for live streaming), and dequantization (restoring the amplitude accuracy of the digital signal) on the baseband audio signal.

[0073] The second DSP simultaneously performs data integrity checks (such as CRC checks). If the check finds data loss or errors, the second MCU sends a retransmission request to the transmitter via a wireless link to ensure that the audio signal is complete.

[0074] 5. Live streaming / internal recording execution.

[0075] For single-platform live streaming: The receiving end connects to the live streaming terminal (such as a mobile phone) via the USB_OTG interface. The second MCU controls the USB_OTG interface to communicate with the live streaming terminal in audio device mode, and transmits the restored output audio stream to the live streaming terminal in real time to realize wireless live streaming.

[0076] For single-device internal recording: The receiving end connects to the internal recording storage device (such as a USB flash drive) via the USB_OTG interface. The second MCU controls the initialization of the storage device and writes the output audio stream to the storage device in a lossless format to complete the wireless internal recording.

[0077] (II) Specific Implementation Process of the One-Send-Multiple-Receive Model

[0078] The one-to-many-receiver mode is suitable for simultaneous live streaming on multiple platforms (such as simultaneously broadcasting on multiple short video platforms) or scenarios of "multi-terminal live streaming + internal recording synchronization". Based on the one-to-many-receiver mode, the core difference lies in "multi-receiver collaborative networking and synchronization control". The specific implementation steps are as follows.

[0079] 1. Multi-receiver networking and pairing.

[0080] First, complete the pairing of the transmitter and the first receiver (the process is the same as the pairing steps for devices in transmit-receive mode);

[0081] Press and hold the "pairing button" on the transmitter until the LED indicator flashes slowly to trigger the transmitter to enter "multi-device networking mode";

[0082] The other receivers are turned on in sequence. Each receiver automatically searches for the transmitter in network mode. The transmitter assigns an independent receiver identifier and synchronization clock signal to each receiver to ensure that the frequency band and clock of all receivers are completely synchronized with the transmitter.

[0083] After the network is set up, all LED indicators on the devices will remain constantly lit, and the transmitter will automatically record the identification information of each receiver to avoid confusion in subsequent signal transmission.

[0084] 2. Synchronous audio transmission and reception

[0085] The audio signal acquisition, preprocessing, and low-latency processing flow of the transmitting end is the same as that of the one-transmit-one-receive mode. The difference is that when the first wireless communication module transmits the wireless radio frequency signal, it will carry the independent identifier of each receiving end to ensure that the signal is only recognized by the designated receiving end in the network.

[0086] Each receiver simultaneously receives radio frequency signals through the antenna module. The second wireless communication module uses the identification filtering function to demodulate only the signal carrying its own identification, thus avoiding signal interference between multiple receivers.

[0087] If a receiver fails to receive a signal (e.g., due to signal obstruction), its second MCU sends feedback to the transmitter via a wireless link. The transmitter's first MCU then schedules the first wireless communication module to retransmit the signal, ensuring that all receivers can acquire complete audio data.

[0088] 3. Multi-scenario output control.

[0089] Each receiver is connected to a different target device via a USB_OTG interface (e.g., receiver 1 connects to a Douyin live streaming phone, receiver 2 connects to a Kuaishou live streaming phone, and receiver 3 connects to an internal recording USB flash drive).

[0090] Each receiver's second MCU independently controls the audio output timing based on the synchronization clock signal sent by the transmitter, ensuring that the time delay difference of the audio output from all receivers is within a very small range, thus avoiding audio-visual asynchrony during live streaming on multiple platforms.

[0091] If a receiver detects that the received signal strength is too low (e.g., the receiver moves to a weak signal area), its second MCU feeds back interference information to the transmitter. The transmitter's first MCU then schedules the first wireless communication module to adjust the transmission power or switch frequency bands to ensure the transmission stability of all receivers.

[0092] See Figure 4 The flowchart illustrates a method for wireless recording and live streaming of electronic musical instruments according to an embodiment of this application, including the following steps S1-S8:

[0093] S1. Construct a wireless processing system adapted for audio transmission of electronic musical instruments. The wireless processing system includes one transmitter and one or more receivers. The transmitter is equipped with an input interface module adapted for electronic musical instrument interfaces, an analog-to-digital converter (ADC), a first digital signal processing module (DSP), a first wireless communication module, a first main control microcontroller unit (MCU), and a first hardware controller. The receivers are equipped with a second wireless communication module, a second main control microcontroller unit (MCU), a second digital signal processing module (DSP), a second hardware controller, a USB_OTG interface, and an antenna module.

[0094] S2. The transmitter receives the analog audio signal output by the electronic musical instrument through the input interface module;

[0095] S3. The analog-to-digital converter (ADC) receives the analog audio signal, converts it into a discrete digital audio signal, and then transmits it through I... 2 The S-bus transmits the data to the first digital signal processing module (DSP);

[0096] S4. The first main control microcontroller unit (MCU) calls the low-latency transmission algorithm and sends processing parameters to the first digital signal processing module (DSP). The first digital signal processing module (DSP) performs bandpass filtering, automatic gain control (AGC) and noise suppression processing on the discrete digital audio signal based on the processing parameters to generate a low-latency standardized digital audio bitstream.

[0097] S5. The first main control microcontroller unit (MCU) schedules the first wireless communication module to modulate the low-latency standardized digital audio bitstream into a wireless radio frequency signal. The first wireless communication module selects the operating frequency band and the appropriate modulation method according to actual needs, and avoids channel interference through an anti-interference mechanism. The first hardware controller works with the first main control microcontroller unit (MCU) to adjust the operating parameters of the transmitter, and the transmitter antenna module transmits the wireless radio frequency signal.

[0098] S6. Each receiving end receives wireless radio frequency signals through the antenna module. The second wireless communication module performs signal amplification and demodulation processing on the wireless radio frequency signals to obtain baseband audio signals and transmits them to the second digital signal processing module (DSP).

[0099] S7. The second main control microcontroller unit (MCU) controls the second digital signal processing module (DSP) to call the low-latency transmission algorithm to perform decompression, equalization and inverse quantization processing on the baseband audio signal, and at the same time ensures data integrity through the data verification mechanism to generate an output audio stream;

[0100] S8. Each receiving end, based on the coordinated control of the second hardware controller and the second main control microcontroller unit (MCU), transmits the output audio stream to the live streaming platform terminal or internal recording storage device through the USB_OTG interface, realizing single-platform or multi-platform live streaming and wireless internal recording of electronic musical instrument audio.

[0101] In one implementation, both the first wireless communication module and the second wireless communication module support UHF, 5.8G, or 2.4G civilian frequency bands and comply with national radio management regulations.

[0102] In one implementation, in step S2, the input interface module supports common audio interface types for electronic musical instruments and has a built-in audio detection and switching component to automatically identify the instrument's access status and switch to the corresponding signal path.

[0103] In one implementation, in step S3, the analog-to-digital converter (ADC) is selected from audio-specific conversion chips. These audio-specific conversion chips have high resolution and high sampling rate characteristics, and can completely preserve the high-frequency overtones and timbre signals of electronic musical instruments.

[0104] In one implementation, in step S4, the low-latency transmission algorithm reduces the total latency of the audio signal from the input of the transmitter to the output of the receiver by optimizing the digital signal processing parameters and encoding strategy, and controls the latency difference of the audio output by each receiver to be within a preset range when one transmitter corresponds to multiple receivers.

[0105] In one implementation, in step S5, the first wireless communication module adopts an adaptive modulation method for different operating frequency bands and has a built-in channel interference detection component. When the interference intensity of the current frequency band exceeds a preset value, it automatically switches to an idle frequency band and synchronously sends a frequency band switching command to the receiving end.

[0106] In one implementation, in step S6, the receiving antenna module can be an omnidirectional antenna or a directional antenna, and the second wireless communication module has a built-in signal amplification component with high receiving sensitivity, which can achieve stable reception of wireless radio frequency signals within a preset distance range, meeting the needs of outdoor live broadcast scenarios for electronic musical instruments.

[0107] In one implementation, in step S7, the second digital signal processing module (DSP) is further configured with a musical instrument timbre compensation component, which pre-stores corresponding compensation parameters for the timbre characteristics of different models of electronic musical instruments. It can be enabled by manual call or automatic matching to ensure the consistency between the output audio and the original sound of the instrument.

[0108] In one implementation, in step S8, the receiving end's USB_OTG interface supports high-speed data transmission and can simultaneously connect the live streaming terminal and the internal recording storage device, enabling live streaming and lossless format internal recording to proceed synchronously; and when the remaining capacity of the internal recording storage device is lower than a preset ratio, the receiving end triggers an alarm prompt and sends storage warning information back to the transmitting end.

[0109] In one implementation, step S9 is further included: the first hardware controller of the transmitter is configured with physical function buttons, including buttons related to power control, frequency band switching, device pairing, and volume adjustment; the transmitter is triggered to enter pairing mode through a preset operation, and the receiver can automatically search for and pair with the transmitter after being turned on, and the pairing status is displayed by an indicator light.

[0110] In one implementation, in step S4, the noise suppression processing of the first digital signal processing module (DSP) adopts an adaptive algorithm to dynamically adjust the suppression parameters for specific noise types during electronic instrument performance, thereby suppressing noise while preserving the detailed audio components of the instrument.

[0111] Therefore, this application provides a method for wireless recording and live streaming of electronic musical instruments, utilizing UHF, 5.8G, or 2.4G civilian frequency bands, which comply with national radio management regulations. To address the wireless recording or live streaming needs of electronic wind instruments and electric saxophones, one transmitting device simultaneously supports one or more receiving devices. A self-developed low-latency algorithm ensures low-latency audio transmission, enabling wireless live streaming or recording on one or more platforms. The use of UHF, 5.8G, or 2.4G wireless transmission technology overcomes the limitations of wired connections, greatly facilitating users' needs for video recording or live streaming. Specifically, a one-to-one or one-to-many transmission technology is used to allow one transmitting device to correspond to one or more receiving devices, and the transmitting and receiving devices are wirelessly connected using UHF, 5.8G, or 2.4G wireless technology. Thus, one transmitting device can correspond to one or more different receiving devices, transmitting the audio to be played through the transmitting device to different receiving devices, enabling wireless recording and live streaming on one or more platforms. This application can be applied to electric blowpipes and electric saddles, enabling more efficient device connections and overcoming the limitations of existing electric blowpipe and electric saddle technologies in meeting the needs for convenient, efficient, and stable wireless recording and live streaming communication.

[0112] In summary, compared with the prior art, the solution of this application has at least the following technical advantages:

[0113] 1. Low-latency transmission: By optimizing the DSP processing logic and wireless coding strategy through low-latency transmission algorithms, and combining the low-interference characteristics of UHF, 5.8G or 2.4G frequency bands, low-latency transmission of audio signals of electric wind instruments and electric saxophones is achieved, which fully meets the requirements of real-time performance and live interactive broadcast.

[0114] 2. Multi-scenario adaptation: Flexible switching between one-transmit-one-receive and one-transmit-multiple-receive modes, covering various scenarios such as single-platform live streaming, multi-platform live streaming, single-device internal recording, and "live streaming + internal recording synchronization". At the same time, the flexible selection of antenna modules (omnidirectional / directional) adapts to different usage environments such as indoor and outdoor.

[0115] 3. High stability: Supports multi-band switching and anti-interference mechanism, can automatically select the optimal frequency band according to environmental interference conditions, avoid signal interruption or noise, and ensure the stability of live broadcast and internal recording process;

[0116] 4. Ease of use: Automatic pairing, status indicator feedback, and physical buttons reduce the learning curve for users; wireless connection frees users from the constraints of cables, allowing performers to move freely within the signal coverage area and improving performance flexibility.

[0117] Embodiments of this application also provide a storage medium storing a computer program, wherein the computer program is configured to execute the steps in any of the above method embodiments when running.

[0118] Optionally, in this embodiment, the storage medium may include, but is not limited to, various media capable of storing computer programs, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0119] Embodiments of this application also provide an electronic device, including a memory and a processor, wherein the memory stores a computer program and the processor is configured to run the computer program to perform the steps in any of the above method embodiments.

[0120] Optionally, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor and the input / output device is connected to the processor.

[0121] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementations, and will not be repeated here.

[0122] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0123] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0124] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0125] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0126] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0127] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard drive, magnetic disk, or optical disk.

[0128] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A method for wireless recording and live streaming of electronic musical instruments, characterized in that, Includes the following steps: S1. Construct a wireless processing system adapted for audio transmission of electronic musical instruments, the wireless processing system comprising one transmitter and one or more receivers; the transmitter is configured with an input interface module adapted for electronic musical instrument interfaces, an analog-to-digital conversion module, a first digital signal processing module, a first wireless communication module, a first main control microcontroller unit, and a first hardware controller; the receivers are configured with a second wireless communication module, a second main control microcontroller unit, a second digital signal processing module, a second hardware controller, a USB_OTG interface, and an antenna module; S2. The transmitter receives the analog audio signal output by the electronic musical instrument through the input interface module; S3. The analog-to-digital converter (ADC) receives the analog audio signal, converts it into a discrete digital audio signal, and transmits it via I... 2 The S-bus transmits the signal to the first digital signal processing module; S4. The first main control microcontroller unit calls the low-latency transmission algorithm and sends processing parameters to the first digital signal processing module DSP. The first digital signal processing module performs bandpass filtering, automatic gain control and noise suppression processing on the discrete digital audio signal based on the processing parameters to generate a low-latency standardized digital audio bitstream. S5. The first main control microcontroller unit schedules the first wireless communication module to modulate the low-latency standardized digital audio stream into a wireless radio frequency signal. The first wireless communication module selects the operating frequency band and the appropriate modulation method according to actual needs, and avoids channel interference through an anti-interference mechanism. The first hardware controller cooperates with the first main control microcontroller unit to adjust the operating parameters of the transmitter, and the transmitter antenna module transmits the wireless radio frequency signal. S6. Each receiving end receives wireless radio frequency signals through the antenna module. The second wireless communication module performs signal amplification and demodulation processing on the wireless radio frequency signals to obtain baseband audio signals and transmits them to the second digital signal processing module. S7. The second main control microcontroller unit controls the second digital signal processing module to call the low-latency transmission algorithm to perform decompression, equalization and inverse quantization processing on the baseband audio signal, and at the same time ensures data integrity through a data verification mechanism to generate an output audio stream; S8. Each receiving end, based on the coordinated control of the second hardware controller and the second main control microcontroller unit, transmits the output audio stream to the live streaming platform terminal or internal recording storage device through the USB_OTG interface, realizing single-platform or multi-platform live streaming and wireless internal recording of electronic musical instrument audio.

2. The method for wireless recording and live streaming of electronic musical instruments according to claim 1, characterized in that, Both the first and second wireless communication modules support UHF, 5.8G, or 2.4G civilian frequency bands and comply with national radio management regulations.

3. The method for wireless recording and live streaming of electronic musical instruments according to claim 1, characterized in that, In step S2, the input interface module supports common audio interface types for electronic musical instruments and has a built-in audio detection and switching component to automatically identify the instrument's connection status and switch to the corresponding signal path.

4. The method for wireless recording and live streaming of electronic musical instruments according to claim 1, characterized in that, In step S4, the low-latency transmission algorithm reduces the total latency of the audio signal from the input of the transmitter to the output of the receiver by optimizing the digital signal processing parameters and encoding strategy, and controls the latency difference of the audio output by each receiver to be within a preset range when one transmitter corresponds to multiple receivers.

5. The method for wireless recording and live streaming of electronic musical instruments according to claim 1, characterized in that, In step S5, the first wireless communication module adopts an adaptive modulation method for different operating frequency bands and has a built-in channel interference detection component. When the interference intensity of the current frequency band exceeds the preset value, it automatically switches to an idle frequency band and simultaneously sends a frequency band switching command to the receiving end.

6. The method for wireless recording and live streaming of electronic musical instruments according to claim 1, characterized in that, In step S7, the second digital signal processing module is also configured with an instrument timbre compensation component, which pre-stores corresponding compensation parameters for the timbre characteristics of different models of electronic instruments. It can be activated by manual call or automatic matching to ensure the consistency between the output audio and the original sound of the instrument.

7. The method for wireless recording and live streaming of electronic musical instruments according to claim 1, characterized in that, In step S8, the USB_OTG interface of the receiving end supports high-speed data transmission and can simultaneously connect the live streaming terminal and the internal recording storage device to realize simultaneous live streaming and lossless internal recording; and when the remaining capacity of the internal recording storage device is lower than a preset ratio, the receiving end triggers an alarm prompt and sends storage warning information back to the transmitting end.

8. The method for wireless recording and live streaming of electronic musical instruments according to claim 1, characterized in that, It also includes step S9: the first hardware controller of the transmitter is configured with physical function buttons, including buttons related to power control, frequency band switching, device pairing and volume adjustment; the transmitter is triggered to enter pairing mode through preset operation, and the receiver can automatically search for and pair with the transmitter after being turned on, and the pairing status is displayed by indicator lights.

9. A storage medium, characterized in that, The storage medium stores a computer program, wherein the computer program is configured to execute the method described in any one of claims 1 to 7 when it is run.

10. An electronic device comprising a memory and a processor, characterized in that, The memory stores a computer program, and the processor is configured to run the computer program to perform the method as described in any one of claims 1 to 7.

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