Music teaching demonstration system

Abstract

The invention discloses a music teaching demonstration system, and the system comprises a data collection unit which is used for collecting the airflow parameters, fingering parameters and blowing time data of all non-lost wind instruments of a multi-sound ensemble; the input end of the data processing and mapping unit is electrically connected with the output end of the data acquisition unit, and the data processing and mapping unit is used for constructing a three-dimensional space for teaching demonstration and mapping each sound part non-lost wind instrument into a sound part core column and a corresponding virtual pipe body model in the three-dimensional space; the input end of the coupling visualization unit is electrically connected with the output end of the data processing and mapping unit, the experience dependence of traditional non-abandoned wind instrument teaching is broken through, and quantitative upgrading of the teaching process is achieved; in combination with a data processing mechanism, the limitation that airflow control and fingering skills are judged only by subjective experience of teachers in traditional teaching is broken, and objective data support is provided for teaching.

Description

Technical Field

[0001] This invention belongs to the field of teaching technology for intangible cultural heritage wind instruments, and in particular relates to a music teaching demonstration system. Background Technology

[0002] In the field of teaching intangible cultural heritage wind instruments, various teaching models and auxiliary technologies have been developed. Traditional teaching primarily relies on oral instruction from teachers, supplemented by sheet music demonstrations and audio playback to convey playing techniques and ensemble logic. With technological advancements, several auxiliary teaching devices have emerged. For example, miniature sensors collect data on the performer's finger placement or basic airflow, displaying the collected parameter curves on a flat screen. Some multi-part teaching systems can play preset ensemble audio through dual-channel or multi-channel audio output devices for learners to reference and compare. Simultaneously, some teaching systems are equipped with basic data storage modules to record performance audio and simple operational data, providing fundamental support for teaching review. These technologies have, to a certain extent, enriched the forms of teaching intangible cultural heritage wind instruments and provided auxiliary means for the inheritance of these skills.

[0003] Based on the beneficial effects of this invention, it is evident that existing technologies have numerous shortcomings, making it difficult to meet the core needs of precise teaching and efficient inheritance of intangible cultural heritage wind instruments: Firstly, they lack a systematic and quantitative teaching mechanism, relying primarily on teachers' subjective experience to judge the rationality of airflow control and fingering strength, failing to provide objective data support for teaching and hindering the transition from "experience-based" to "precision-based" teaching; secondly, visualization is limited to single parameters or planar forms, failing to intuitively demonstrate the coupling relationship between airflow and fingering, as well as the spatial hierarchy of multi-part sounds, resulting in a high cognitive threshold for learners; thirdly, error correction feedback is delayed and vague, lacking real-time thresholding. The system suffers from several shortcomings: firstly, the lack of value judgment and multi-level prompts prevents the generation of quantitative reports, making it difficult for teachers to accurately identify weak areas; secondly, insufficient interactive flexibility, lacking targeted functions such as part separation and position adjustment, making it unsuitable for learners of different levels and diverse teaching scenarios; thirdly, the absence of a regular sensor calibration mechanism leads to potential accuracy deviations over long-term use, data storage and retrieval dimensions are limited, and most systems only support a single intangible cultural heritage instrument, resulting in insufficient compatibility and stability; and fourthly, the teaching methods lack interest and intuitiveness, making it difficult to reduce learning difficulty, failing to effectively attract learners, and providing limited support for the living transmission of intangible cultural heritage wind instruments. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a music teaching demonstration system, which solves the problems of lack of quantitative and precise feedback, insufficient visualization, interactivity and adaptability, and weak support for inheritance in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A music teaching demonstration system, comprising: The data acquisition unit is used to collect airflow parameters, fingering parameters, and timing data of the start of playing for each intangible cultural heritage wind instrument in a multi-part ensemble. The data processing and mapping unit, whose input end is electrically connected to the output end of the data acquisition unit, is used to construct a three-dimensional space for teaching demonstration and to map each part of the intangible cultural heritage wind instrument into the core column of the part and the corresponding virtual tube model in the three-dimensional space. A coupling visualization unit, whose input end is electrically connected to the output end of the data processing and mapping unit, is used to visualize the coupling relationship between the airflow and fingering of a single voice based on the collected airflow parameters and fingering parameters; The multi-voice spatial demonstration unit communicates with the data processing and mapping unit to present the hierarchical relationship of the multi-voice in three-dimensional space. The error correction and feedback unit is interconnected with the data acquisition unit and the multi-voice spatial demonstration unit, respectively, and is used to judge deviations based on preset thresholds, trigger error correction prompts, and generate quantitative reports. The interactive control unit is electrically connected to the data processing and mapping unit and the multi-voice spatial demonstration unit, respectively, and is used to realize the separation of voice parts and the adjustment of the position of the voice part core column.

[0006] Preferably, the data acquisition unit includes a customized miniature sensor kit, which includes an airflow velocity sensor, an airflow pressure sensor, a fingering pressure sensor, and a rhythm sensor; the airflow velocity sensor and the airflow pressure sensor are integrated inside the mouthpiece of the intangible cultural heritage wind instrument, with the mounting plane having an angle of no more than 15 degrees with the mouthpiece end face; the fingering pressure sensor is attached to the inner wall of the fingering hole of the instrument, with the sensing surface flush with the inner wall of the fingering hole.

[0007] Preferably, the accuracy error of the data acquisition unit in acquiring single-voice data is no greater than 5%, the time synchronization error of multi-voice data acquisition is no greater than 10 milliseconds, and the data is transmitted via the SPI protocol.

[0008] Preferably, the data processing and mapping unit constructs a three-dimensional space through a three-dimensional modeling algorithm, with the core pillars of different voice parts arranged in layers along the vertical direction, and the height difference between the lowest and highest points of adjacent core pillars not less than 5 centimeters; each intangible cultural heritage wind instrument corresponds to a unique identification color, and the color difference value ΔE between any two identification colors is not less than 30.

[0009] Preferably, the coupling visualization unit sets a light-emitting component at the hole position on the virtual tube body, and the brightness of the light-emitting component increases linearly with the force of pressing the hole; an airflow streamline model is generated from the virtual blowhole end, and the brightness of the streamline increases linearly with the air volume, while the thickness of the streamline increases linearly with the damper angle.

[0010] Preferably, the error correction and feedback unit presets airflow parameter thresholds, finger technique parameter thresholds, rhythm synchronization thresholds, and volume equalization thresholds. Each threshold can be customized within a range of ±30% of the baseline threshold. When a deviation occurs, it triggers a color change in the airflow streamline, flashing of the light-emitting component, and vibration prompts, and simultaneously marks the timestamp of the problem node and the corresponding deviation data.

[0011] Preferably, when the interactive control unit performs the sound part stripping operation, it displays the visual content of the target sound part separately, while the core pillars of the other sound parts are switched to an outline display with a width of 2 mm and a reference brightness of 20%, retaining only the vibration synchronized with the rhythm; it supports driving the core pillars of the sound parts to move in three-dimensional space.

[0012] Preferably, the intangible cultural heritage wind instruments include the shakuhachi, bili, and dong flute, and the system is compatible with at least two different types of instruments accessing simultaneously; it also includes a data storage unit, which uses an SSD solid-state drive as the storage medium to store historical performance data, quantitative reports and threshold parameters, and supports retrieval by timestamp, instrument type and part number.

[0013] Preferably, the data acquisition unit further includes a calibration module that supports periodic zero-point calibration and full-scale calibration of the airflow velocity sensor, airflow pressure sensor, and finger pressure sensor, with a calibration error of no more than 1%.

[0014] Preferably, the data processing and mapping unit supports access to an external audio interface, which can be adapted to the teaching of mixed multi-part ensembles of intangible cultural heritage wind instruments and mainstream wind instruments.

[0015] The technical effects and advantages of the music teaching demonstration system of the present invention are as follows: 1. This invention breaks through the reliance on experience in traditional teaching of intangible cultural heritage wind instruments and achieves a quantitative upgrade of the teaching process: Through the core data acquisition unit, airflow parameters, fingering parameters and the timing of blowing are systematically collected. Combined with the data processing mechanism, it breaks the limitation of relying solely on the teacher's subjective experience to judge airflow control and fingering skills in traditional teaching. It provides objective data support for teaching and promotes the transformation of intangible cultural heritage wind instrument teaching from "experience-based" to "precision-based".

[0016] 2. This invention relies on a coupled visualization unit and a multi-part spatial demonstration unit to transform abstract airflow changes, fingering strength, and part hierarchy into an intuitive visual presentation, allowing performers to clearly perceive the logic of the relationship between their own operation and the instrument's sound production, while clarifying the part positioning in multi-part ensemble, significantly improving the cognitive efficiency of complex playing techniques and ensemble logic.

[0017] 3. This invention, through the preset threshold judgment and multi-level prompt design of the error correction and feedback unit, can capture parameter deviations in real time during the performance and trigger prompts to avoid the solidification of incorrect operations; the quantitative report generated after the teaching can accurately locate the weak links in the performance of each part, providing a clear basis for teachers to formulate personalized teaching plans, and greatly improving the efficiency of teaching error correction and the pertinence of guidance.

[0018] 4. The voice separation and core column position adjustment functions of the interactive control unit of this invention can focus on the target voice as needed to carry out targeted teaching, while retaining the overall rhythm reference, taking into account both local detail teaching and overall ensemble perception; it supports custom threshold adjustment, which can adapt to the learning needs of performers of different levels and broaden the applicable scenarios of the system.

[0019] 5. The calibration module of the data acquisition unit of this invention can periodically calibrate the sensor accuracy to ensure the accuracy of the collected data during long-term use; the data storage unit realizes the systematic management and multi-dimensional retrieval of teaching data, which facilitates teaching review and effect comparison; the mixed ensemble adaptation design breaks through the limitation of teaching a single intangible cultural heritage instrument, and can be compatible with mainstream wind instruments, expanding the applicability and practical value of the system.

[0020] 6. This invention reduces the learning difficulty of intangible cultural heritage wind instruments through technical means, improves teaching efficiency and quality, and enhances the learning interest by relying on visual and interactive teaching methods, attracting more people to participate in learning intangible cultural heritage wind instruments, and providing technical support for the living inheritance of intangible cultural heritage. Attached Figure Description

[0021] Figure 1 This is a flowchart of a music teaching demonstration system proposed in this invention. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include," "contain," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "includes..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0024] refer to Figure 1 This invention provides a music teaching demonstration system. The core of the system includes data acquisition, data processing and mapping, coupling visualization, multi-part spatial demonstration, error correction and feedback, and an interactive control unit, with an optional data storage unit. The data acquisition unit collects airflow, fingering, and onset timing data for each part, with a calibration module ensuring accuracy. The data processing and mapping unit constructs a three-dimensional space and maps the core pillars and virtual bodies of each part, supporting ensemble playing of intangible cultural heritage instruments and mainstream wind instruments. The coupling visualization unit intuitively presents the coupling relationship between airflow and fingering, while the multi-part demonstration unit clearly displays the hierarchy of parts. The error correction and feedback unit achieves real-time error correction and quantitative report generation based on customizable thresholds, and the interactive control unit supports part separation and core pillar position adjustment. These units work collaboratively, breaking away from traditional reliance on teaching experience, lowering the learning threshold, and enhancing the relevance and flexibility of teaching. Simultaneously, data storage enables teaching retrospection, comprehensively strengthening the teaching effect of intangible cultural heritage wind instruments and providing reliable technical support for their living transmission.

[0025] System overall architecture: This system includes a data acquisition unit, a data processing and mapping unit, a coupled visualization unit, a multi-voice spatial demonstration unit, an error correction and feedback unit, an interactive control unit, and a data storage unit (optional). Each unit achieves efficient data transmission and collaboration through electrical connections or signal communication. The data acquisition unit ensures acquisition accuracy and synchronization, the data processing and mapping unit constructs the core demonstration carrier, the coupled visualization unit and the multi-voice spatial demonstration unit achieve dual visualization effects, the error correction and feedback unit provides precise teaching guidance, the interactive control unit enhances teaching flexibility, and the data storage unit supports long-term teaching data management.

[0026] Specific implementation details for each unit: (a) Data Acquisition Unit: The core of this unit is used to collect airflow parameters, fingering parameters, and timing data for initiating playing on multi-part intangible cultural heritage wind instruments. The specific implementation is as follows: Sensor Kit Configuration: A customized miniature sensor kit is used, including an airflow velocity sensor, an airflow pressure sensor, a fingering pressure sensor, and a rhythm sensor. The airflow velocity sensor is a Sensirion SFM3000, with a measurement range of 0-50 slm and an accuracy of ±1%; the airflow pressure sensor is an NXPMPX5700, with a measurement range of 0-70 kPa and an accuracy of ±0.5%. Both are integrated into the inside of the mouthpiece of traditional wind instruments (shakuhachi, bili, and dong di) using a patch process. The angle between the mounting plane and the mouthpiece end face is set to 12 degrees (not exceeding 15 degrees) to avoid interfering with the player's embouchure control. The fingering pressure sensor is a Tekscan FlexiForce A201, with a sensing range of 0-10N and an accuracy of ±2%. It is attached to the inner wall of each finger hole, and the sensing surface is polished to be flush with the inner wall of the finger hole to ensure smooth fingering. The rhythm sensor uses an STM32F103 chip with a built-in timer module and a sampling frequency of 1kHz to accurately collect data on the timing of the blow.

[0027] Data Acquisition Accuracy and Data Transmission: After the sensor-acquired data is processed by the signal conditioning circuit (including filtering and amplification modules), it is transmitted to the data processing and mapping unit via the SPI protocol. Actual testing shows that the acquisition accuracy error of single-voice airflow parameters and fingering parameters is 3% (not greater than 5%), and the time synchronization error of multi-voice (such as shakuhachi + harp) acquisition data is 8 milliseconds (not greater than 10 milliseconds), which fully meets the accuracy requirements for teaching demonstrations.

[0028] Calibration Module Design: The unit has a built-in calibration module that supports periodic zero-point and full-scale calibration of the airflow velocity sensor, airflow pressure sensor, and finger pressure sensor. The calibration process is as follows: connect to a standard signal source, compare the sensor output value with the standard value, generate calibration coefficients and store them; after calibration, the error is controlled within 0.8% (not greater than 1%) to ensure the stability of the acquisition accuracy during long-term use.

[0029] (II) Data Processing and Mapping Unit: The input terminal of this unit is electrically connected to the output terminal of the data acquisition unit via a USB-C interface. Its core function is to construct a three-dimensional space and complete the sound part mapping, as detailed below: 3D Space Construction: The teaching demonstration 3D space is constructed using an Intel Core i7-12700H processor as the core processing chip and equipped with the Unity3D engine (3D modeling algorithm). The spatial resolution is set to 1920×1080, and the frame rate is kept stable at 60fps to ensure smooth visualization.

[0030] Voice mapping rules: Different voice parts of intangible cultural heritage wind instruments are mapped to core pillars and corresponding virtual body models in three-dimensional space. The core pillars are arranged in layers along the vertical direction. The height range of the core pillars for the shakuhachi is set to 80-100 cm, and for the bili (a type of reed pipe), it is 50-70 cm. The height difference between the lowest and highest points of adjacent core pillars is 30 cm (not less than 5 cm). Each instrument corresponds to a unique identifier color: the shakuhachi corresponds to RGB values ​​(255,0,0), the bili to (0,255,0), and the dong flute to (0,0,255). The calculated color difference value ΔE between any two identifier colors is 42 (not less than 30), ensuring clear visual distinction. The virtual body model is based on a 1:1 scan of the physical instrument, accurately reproducing the instrument's appearance and finger positions.

[0031] Mixed Ensemble Adaptation: The unit has a reserved USB-Audio external audio interface, which supports the input of audio signals from mainstream wind instruments such as flutes and bamboo flutes; the signal analysis module extracts the voice characteristics of mainstream instruments and generates exclusive voice core pillars and virtual models according to the same mapping rules, so as to realize the adaptation of mixed multi-part ensemble teaching between intangible cultural heritage wind instruments and mainstream wind instruments.

[0032] (III) Coupling Visualization Units: The input of this unit is electrically connected to the output of the data processing and mapping unit. Its core function is to visualize the coupling relationship between airflow and finger placement, as detailed below: LED light-emitting components (model WS2812B) are installed one-to-one at the corresponding holes on the virtual tube. The brightness of the components is adjusted via PWM signals. When the pressing force varies from 0-5N, the brightness increases from 30 cd / m². 2 Linear increase to 200 cd / m 2 The system provides intuitive feedback on the force applied to the nozzle. A gradient-colored airflow streamline model is generated from the virtual nozzle end via a particle system. When the airflow rate is within the range of 1-5 L / min, the streamline brightness ranges from 50 cd / m². 2 Linear increase to 300 cd / m 2 When the damper angle is within the range of 5-30 degrees, the streamline diameter increases linearly from 0.5 cm to 3 cm, allowing the performer to clearly perceive the real-time changes in airflow parameters.

[0033] (iv) Multi-voice spatial demonstration unit: This unit communicates with the data processing and mapping unit via UART protocol signals, and its core presents a multi-part hierarchical relationship, as detailed below: The system receives audio signals from each voice part (sampling rate 44.1kHz, bit depth 16bit) and extracts note loudness and rhythmic characteristics: when the note loudness is in the range of 60-100dB, the corresponding voice part's core column linearly expands and contracts ±20% from the reference height in the vertical direction; when the rhythmic frequency is in the range of 60-120BPM, the core column rotates synchronously at an angle of 15-30 degrees per beat. When a voice part joins the ensemble, the corresponding voice part's core column, virtual tube model, and airflow streamline model are displayed synchronously; when a voice part leaves, the above components are hidden synchronously, clearly presenting the multi-voice entry / exit logic and spatial hierarchy.

[0034] (v) Error Correction and Feedback Unit: This unit communicates with the data acquisition unit and the multi-voice spatial demonstration unit via I2C protocol signals. Its core functions include deviation detection, error correction prompts, and quantification report generation. The specific implementation is as follows: Threshold settings and adjustments: Preset thresholds for airflow parameters, fingering parameters, multi-part rhythm synchronization, and volume equalization for each intangible cultural heritage wind instrument. For example, the airflow velocity threshold for the shakuhachi is set to 15-30 m / s, and the fingering force threshold is set to 1-4 N; the multi-part rhythm synchronization threshold is set to ±50 ms, and the volume equalization threshold is set to ±3 dB. Each threshold can be customized within ±30% of the baseline threshold via the interactive control unit, adapting to the teaching needs of players at different skill levels.

[0035] Error correction mechanism: When the collected data deviates from the corresponding threshold, multi-level error correction prompts are immediately triggered: when the airflow parameter deviates, the airflow streamline model changes from the base color to red; when the finger technique parameter deviates, the corresponding button light-emitting component flashes at a frequency of 10Hz; simultaneously, the wrist-worn vibration unit (model 3020 eccentric motor) is driven to generate a 200Hz vibration prompt. The timestamp (accurate to the second) of the problem node and the corresponding deviation data (such as flow velocity exceeding the threshold by 5m / s, button pressing force insufficient by 0.5N) are synchronously marked.

[0036] Quantitative report generation: After the teaching is completed, the unit automatically counts the number of parameter deviations, deviation magnitudes, rhythm synchronization rate, volume balance, and other data for each voice part, and generates a quantitative report, which includes individual scores (0-100 points) and a comprehensive score, providing teachers with precise teaching guidance.

[0037] (vi) Interactive control unit: This unit is electrically connected to the data processing and mapping unit and the multi-voice spatial demonstration unit via HDMI interface. Its core functionality includes sound separation and core column position adjustment, as detailed below: Voice part stripping operation: The user stripping command is received through the touch screen (15.6 inches in size, 1920×1080 resolution). When the stripping operation is performed, the virtual tube body model, airflow streamline model and light-emitting component status of the target voice part are displayed separately; the core columns of other voice parts are switched to the outline display mode with a width of 2 mm and a reference brightness of 20%, and only the vibration synchronized with the rhythm is retained (vibration amplitude of 0.3 mm, frequency consistent with the voice part rhythm), which highlights the teaching focus of the target voice part while retaining the overall rhythm reference.

[0038] Core column position adjustment: Supports moving the core column of the voice part in three-dimensional space via touch or external mouse, with a horizontal movement range of 0-50 cm and a vertical movement range of 50-120 cm; during the movement, the system outputs the adjusted ensemble audio in real time, intuitively reflecting the impact of the voice part's spatial position on the ensemble effect.

[0039] (vii) Data storage unit: This unit uses a 1TB SSD (Samsung 870EVO) as the storage medium, with a SATAIII interface and read and write speeds of 560MB / s and 530MB / s respectively. It stores historical performance data for each section, quantitative reports, and custom threshold parameters. It supports multi-dimensional searches by timestamp (accurate to the second), instrument type (shakuhachi, bili, dongdi), and section number (1, 2, 3...), with a search response time of ≤1 second, facilitating teachers' review and comparison of performance data from different teaching stages.

[0040] System workflow: Initialization: After the system starts, the calibration module of the data acquisition unit automatically completes the sensor calibration, and the data processing and mapping unit loads the preset three-dimensional space model and sound part mapping rules; Data Acquisition: When performers use intangible cultural heritage wind instruments for multi-part ensemble, the data acquisition unit collects airflow parameters, fingering parameters, and the timing of the first blow in real time, and transmits them synchronously to the data processing and mapping unit. Visualization demonstration: The data processing and mapping unit converts data into control signals, which drive the coupling visualization unit to present the airflow-finger coupling relationship and drive the multi-voice spatial demonstration unit to present the voice hierarchy; Error correction and feedback: The error correction and feedback unit compares the collected data with the preset threshold in real time. When there is a deviation, an error correction prompt is triggered, and a quantitative report is generated after the teaching is completed. Interactive teaching: Teachers can perform operations such as voice part separation and core column position adjustment through the interactive control unit to carry out targeted teaching as needed; the data storage unit stores the data of the whole process synchronously for subsequent retrieval and analysis.

[0041] In summary, this specific implementation method, through clear hardware selection, precise parameter settings, and a clear workflow, fully realizes all the technical features defined in the claims, ensuring that the system has stable, accurate, and flexible teaching demonstration capabilities, and is adapted to the core needs of teaching multi-part ensemble playing of intangible cultural heritage wind instruments.

[0042] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of protection of the claims.

[0043] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A music teaching demonstration system, characterized in that, include: The data acquisition unit is used to collect airflow parameters, fingering parameters, and timing data of the start of playing for each intangible cultural heritage wind instrument in a multi-part ensemble. The data processing and mapping unit, whose input end is electrically connected to the output end of the data acquisition unit, is used to construct a three-dimensional space for teaching demonstration and to map each part of the intangible cultural heritage wind instrument into the core column of the part and the corresponding virtual tube model in the three-dimensional space. A coupling visualization unit, whose input end is electrically connected to the output end of the data processing and mapping unit, is used to visualize the coupling relationship between the airflow and fingering of a single voice based on the collected airflow parameters and fingering parameters; The multi-voice spatial demonstration unit communicates with the data processing and mapping unit to present the hierarchical relationship of the multi-voice in three-dimensional space. The error correction and feedback unit is interconnected with the data acquisition unit and the multi-voice spatial demonstration unit, respectively, and is used to judge deviations based on preset thresholds, trigger error correction prompts, and generate quantitative reports. The interactive control unit is electrically connected to the data processing and mapping unit and the multi-voice spatial demonstration unit, respectively, and is used to realize the separation of voice parts and the adjustment of the position of the voice part core column.

2. The music teaching demonstration system as described in claim 1, characterized in that, The data acquisition unit includes a customized miniature sensor kit, which includes an airflow velocity sensor, an airflow pressure sensor, a fingering pressure sensor, and a rhythm sensor. The airflow velocity sensor and the airflow pressure sensor are integrated inside the mouthpiece of the intangible cultural heritage wind instrument, with the mounting plane having an angle of no more than 15 degrees with the mouthpiece end face. The fingering pressure sensor is attached to the inner wall of the fingering hole of the instrument, with the sensing surface flush with the inner wall of the fingering hole.

3. The music teaching demonstration system as described in claim 1, characterized in that, The data acquisition unit acquires single-voice data with an accuracy error of no more than 5%, and multi-voice data acquisition with a time synchronization error of no more than 10 milliseconds. The data is transmitted via the SPI protocol.

4. The music teaching demonstration system as described in claim 1, characterized in that, The data processing and mapping unit constructs a three-dimensional space through a three-dimensional modeling algorithm. The core pillars of different voice parts are arranged in layers along the vertical direction, and the height difference between the lowest and highest points of adjacent core pillars is not less than 5 centimeters. Each intangible cultural heritage wind instrument corresponds to a unique identification color, and the color difference value ΔE between any two identification colors is not less than 30.

5. A music teaching demonstration system as described in claim 1, characterized in that, The coupled visualization unit sets a light-emitting component at the hole position on the virtual tube body. The brightness of the light-emitting component increases linearly with the force of pressing the hole. An airflow streamline model is generated from the virtual blowhole end. The brightness of the streamline increases linearly with the air volume, and the thickness of the streamline increases linearly with the damper angle.

6. The music teaching demonstration system as described in claim 1, characterized in that, The error correction and feedback unit presets airflow parameter thresholds, finger technique parameter thresholds, rhythm synchronization thresholds, and volume equalization thresholds. Each threshold can be customized within ±30% of the baseline threshold. When a deviation occurs, it triggers a color change in the airflow streamline, flashing of the light-emitting component, and vibration prompts, and simultaneously marks the timestamp of the problem node and the corresponding deviation data.

7. A music teaching demonstration system as described in claim 1, characterized in that, When the interactive control unit performs the sound part stripping operation, it displays the visual content of the target sound part separately, while the core pillars of the other sound parts are switched to an outline display with a width of 2 mm and a reference brightness of 20%, retaining only the vibration synchronized with the rhythm; It supports the movement of the core column of the driving voice section in three-dimensional space.

8. The music teaching demonstration system as described in claim 1, characterized in that, The intangible cultural heritage wind instruments include the shakuhachi, bili, and dong flute. The system is compatible with at least two different types of instruments that can be connected simultaneously. It also includes a data storage unit, which uses an SSD solid-state drive as the storage medium to store historical performance data, quantitative reports, and threshold parameters. It supports retrieval by timestamp, instrument type, and part number.

9. A music teaching demonstration system as described in claim 2, characterized in that, The data acquisition unit also includes a calibration module, which supports periodic zero-point calibration and full-scale calibration of the airflow velocity sensor, airflow pressure sensor and finger pressure sensor, with a calibration error of no more than 1%.

10. A music teaching demonstration system as described in claim 1, characterized in that, The data processing and mapping unit supports access to external audio interfaces and can be adapted to multi-part ensemble teaching of intangible cultural heritage wind instruments and mainstream wind instruments.

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