A baby's rhythm initiation toy with adjustable rhythm intensity
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- WENZHOU TECHNICIAN COLLEGE
- Filing Date
- 2026-04-28
- Publication Date
- 2026-08-07
Smart Images
Figure CN122516614A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of toys, and more particularly to an infant rhythm learning toy with adjustable rhythm intensity. Background Technology
[0002] Infancy is a crucial stage for rhythm perception and music development. Rhythm toys, as an important tool to help infants perceive rhythm and cultivate musical interest, are widely used in early childhood education, and market demand continues to rise. With the increasing popularity of early childhood education concepts, parents are placing higher demands on the functionality, suitability, and safety of rhythm toys for infants and toddlers. Although there are many types of rhythm toys available on the market, they still have many shortcomings in actual use.
[0003] First, the rhythm intensity of existing infant and toddler rhythm learning toys is fixed. Most toys can only play audio with a preset rhythm and cannot dynamically adjust the rhythm intensity according to the infant's age, developmental stage, and acceptance ability. As a result, young infants find it difficult to adapt to rhythms that are too fast or too strong, while older infants find the rhythm too slow, which greatly reduces the learning effect. In addition, the rhythm feedback is limited in form, with most toys only having audio output functions and lacking visual rhythm-related feedback. This makes it difficult for infants and toddlers to intuitively perceive rhythm changes, reducing the fun and effectiveness of rhythm learning.
[0004] Application content
[0005] This application aims to address, at least to some extent, the technical problems in the related art.
[0006] To achieve the above objectives, this application proposes an adjustable rhythm intensity infant rhythm enlightenment toy, including a shell, a human-computer interaction module, a rhythm feedback module, a power supply module, a data storage module, an AI intelligent module, and a control module.
[0007] The outer casing has a handle on one side and hanging ears on both sides of its top surface.
[0008] The human-computer interaction module includes multiple mode buttons, a power button, a rhythm intensity adjustment knob, a volume button, and a sheet music slot. The mode buttons, the power button, the rhythm intensity adjustment knob, and the sheet music slot are respectively disposed on the surface of the housing, and the volume button is disposed on one side of the housing.
[0009] The rhythm feedback module includes an audio output unit and a rhythm-linked lighting unit. The audio output unit includes an annular sound outlet and a speaker. The annular sound outlet is located in the center of the surface of the housing, and the speaker is located inside the housing. The rhythm-linked lighting unit includes two LED beads, which are located on the housing.
[0010] The power module includes a lithium battery and a charging interface. The lithium battery is disposed inside the housing, and the charging interface is disposed at the bottom of the housing.
[0011] The data storage module is used to pre-store and retrieve rhythmic enlightenment audio resources and supports external expansion.
[0012] The AI intelligent module has a built-in rhythmic enlightenment adaptation algorithm for infants and toddlers, which can recognize simple voice commands and emotional voice characteristics of infants and toddlers, and collect data on infants and toddlers' operation behavior with toys.
[0013] The control module is connected to the human-computer interaction module, the rhythm feedback module, the power supply module, the data storage module, and the AI intelligent module. It can receive signals from the human-computer interaction module and the AI intelligent module, decode audio resources in the data storage module, control the rhythm feedback module to output corresponding rhythm and light feedback, and dynamically adjust the rhythm parameters according to the signal of the rhythm intensity adjustment knob.
[0014] In addition, the application may also include the following additional technical features:
[0015] Specifically, the rhythm-linked lighting unit also includes a lighting driving circuit, which is connected to two LED beads. The LED beads are tri-color LED beads that can change their light emission color and flashing frequency according to the rhythm intensity and beat of the audio output.
[0016] Specifically, the data storage module includes a memory and a memory card slot, the memory being disposed inside the housing and the memory card slot being disposed at the bottom of the housing.
[0017] Specifically, the control module includes a microcontroller and an audio decoding chip. The microcontroller receives digital signals from the rhythm intensity adjustment knob and dynamically adjusts the rhythm intensity by changing the beat speed and note density.
[0018] Specifically, the mode buttons include a music appreciation mode button, a rhythm game mode button, and a parent-child interaction mode button.
[0019] Specifically, the power module also includes a power detection circuit and a low power indicator light. The low power indicator light is located on the surface of the housing. When the voltage of the lithium battery is lower than a preset value, the low power indicator light flashes as a warning.
[0020] Specifically, the outer shell is integrally molded from food-grade silicone material, and all edges and corners are rounded. The surface of the outer shell is coated with an antibacterial coating.
[0021] Specifically, the data storage module pre-stores rhythmic enlightenment audio resources including various nursery rhymes, classical music excerpts, and percussion rhythm samples with different rhythm intensities. Each audio resource is accompanied by a rhythm intensity label, and the control module selects and plays the audio with the corresponding label according to the signal of the rhythm intensity adjustment knob.
[0022] In summary, the beneficial effects of this adjustable rhythm intensity infant rhythm learning toy are as follows: The rhythm intensity adjustment knob, combined with the control module, allows for stepless rhythm adjustment, enabling flexible adjustment of rhythm strength according to the infant's age and developmental stage, adapting to different infants' varying learning abilities and effectively enhancing the learning effect. Furthermore, the dual auditory and visual feedback design, with audio and LED light beads synchronized rhythmically, allows infants to intuitively perceive rhythm changes, significantly enhancing the fun and effectiveness of rhythm learning. Combined with AI algorithm analysis, it can quickly grasp the infant's interests and developmental stage, achieving personalized adaptation of rhythm intensity and rhythmic content, making learning more targeted. Attached Figure Description
[0023] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:
[0024] Figure 1 This is a structural schematic diagram of an adjustable rhythm intensity toy for infants and toddlers according to this application;
[0025] Figure 2 This is a module diagram of an adjustable rhythm intensity toy for infants and toddlers, as described in this application.
[0026] As shown in the figure: 1. Outer shell; 2. Handle; 3. Ear hook; 4. Mode button; 5. Power button; 6. Rhythm intensity adjustment knob; 7. Volume button; 8. Sheet music slot; 9. Ring-shaped sound outlet; 10. LED light bead; 11. Charging port; 12. Memory card slot; 13. Low battery indicator. Detailed Implementation
[0027] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "center", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation structure and operation. Therefore, they should not be construed as limitations on this application.
[0028] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "provided with," "installed," "connected," "linked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0029] The present application will now be described in further detail with reference to the accompanying drawings.
[0030] like Figure 1 and Figure 2 As shown in the figure, an adjustable rhythm intensity infant rhythm enlightenment toy according to an embodiment of this application includes a shell 1, a human-computer interaction module, a rhythm feedback module, a power module, a data storage module, an AI intelligent module and a control module. A handle 2 is provided on one side of the shell 1, and ear loops 3 are provided on both sides of the top surface of the shell 1.
[0031] It should be noted that the surface of handle 2 is treated with anti-slip material, making it easy for infants and toddlers to grasp and play with, while preventing accidental slippage during play. The hanging ears 3 are made of soft and tough material and can be used to hang ropes, hooks, etc., making it convenient to store and carry toys. They can also be hung within the reach of infants and toddlers to increase the convenience of play.
[0032] The human-computer interaction module includes multiple mode buttons 4, power button 5, rhythm intensity adjustment knob 6, volume button 7 and sheet music slot 8. The mode buttons 4, power button 5, rhythm intensity adjustment knob 6 and sheet music slot 8 are respectively set on the surface of the outer shell 1, and the volume button 7 is set on one side of the outer shell 1.
[0033] It should be noted that the mode button 4 is used to switch between different working modes of the toy. Pressing the corresponding button will quickly switch modes to adapt to the rhythm learning needs of different scenarios. The power button 5 is used to control the start and stop of the toy. Long press to turn on and short press to turn off. The rhythm intensity adjustment knob 6 has a non-slip texture on its surface. Turning the knob will adjust the intensity of the rhythm. Turning it clockwise will increase the rhythm and turning it counterclockwise will decrease the rhythm. The knob has moderate resistance, which is suitable for infants and toddlers to grasp and turn, helping them to explore different rhythm changes independently.
[0034] The sheet music slot 8 is for inserting sheet music, making it easy for parents to guide infants and toddlers to listen to rhythmic audio while referring to the sheet music. This helps infants and toddlers to initially establish a connection between notes, rhythm, and melody. The volume buttons 7 allow parents or infants to quickly find and adjust the volume. All buttons and knobs are designed with a soft touch, ensuring smooth pressing and moderate resistance, conforming to the operating habits of infants and toddlers. They are also labeled with simple and easy-to-understand icons, making it easy for parents to guide infants and toddlers in using the equipment.
[0035] The rhythm feedback module includes an audio output unit and a rhythm-linked lighting unit. The audio output unit includes a ring-shaped sound outlet 9 and a speaker. The ring-shaped sound outlet 9 is located in the center of the surface of the housing 1, and the speaker is located inside the housing 1. The rhythm-linked lighting unit includes two LED beads 10, which are located on the housing 1.
[0036] It should be noted that the ring-shaped sound outlet 9 adopts a ring-shaped distribution design to ensure that infants and toddlers can clearly hear the rhythmic sounds from different angles. The speaker is built into the outer shell 1 and uses a low-distortion, high-fidelity model with controllable volume, providing a soft sound quality and avoiding damage to the delicate hearing of infants and toddlers. The LED beads echo the ring-shaped sound outlet 9, and their light emission is synchronized with the audio rhythm, allowing infants and toddlers to visually perceive the rhythmic changes and enhancing the fun of rhythmic learning.
[0037] The power module includes a lithium battery and a charging interface 11. The lithium battery is located inside the housing 1, and the charging interface 11 is located at the bottom of the housing 1.
[0038] It should be noted that the power module provides stable power support for the normal operation of the entire toy. The lithium battery is built into the shell 1 and is a polymer lithium battery with moderate capacity and high safety. It has a strong battery life and can meet the needs of infants and young children to play for a long time. At the same time, the lithium battery has overcharge, over-discharge and short circuit protection functions to effectively avoid safety hazards during charging. The charging interface 11 is located at the bottom of the shell 1 and adopts a Type-C universal interface. It is easy to plug and unplug and has strong compatibility. It can be used with common mobile phone chargers, power banks and other charging devices, so that parents can charge the toy at any time. The interface is equipped with a dust plug to prevent dust from entering and affecting the service life.
[0039] The data storage module is used to pre-store and retrieve rhythmic enlightenment audio resources, and supports external expansion.
[0040] It should be noted that the data storage module is mainly used to pre-store various rhythmic learning audio resources and supports the reading and external expansion of audio resources to meet the rhythmic learning needs of infants and toddlers of different ages. The audio resources pre-stored in this module have been strictly selected to match the auditory development characteristics of infants and toddlers. At the same time, it supports the expansion of audio resources through external storage devices. Parents can add appropriate rhythmic audio according to the interests and development of their infants and toddlers, thereby improving the practicality and flexibility of the toy and realizing personalized rhythmic learning.
[0041] The AI intelligent module has a built-in algorithm for early childhood rhythm learning, which can recognize simple voice commands and emotional voice characteristics of infants and toddlers, and collect data on infants' and toddlers' operational behavior with toys.
[0042] It should be noted that the infant and toddler rhythm learning adaptation algorithm is based on machine learning technology. It pre-trains and stores an infant and toddler speech feature library, emotional feature model, and behavioral preference dataset. The AI intelligent module captures simple speech signals emitted by infants and toddlers in real time, separates the effective instruction information in the speech through feature extraction algorithms, and compares and matches it with the pre-stored speech instruction template to achieve rapid recognition and response to instructions. At the same time, it can capture emotional features such as tone, speech rate, and volume in infants and toddlers' speech, compare them with the pre-trained emotional feature model, accurately identify the current emotional state of infants and toddlers, and collect data on infants and toddlers' operation behavior with toys in real time through built-in sensors (including button pressing frequency, rhythm adjustment operation, interaction duration, grip strength, and operation interval, etc.). After the collected analog signals are converted into digital signals, the algorithm analyzes and organizes the data to form a profile of infants and toddlers' operation behavior.
[0043] The control module is connected to the human-computer interaction module, rhythm feedback module, power supply module, data storage module, and AI intelligent module. It can receive signals from the human-computer interaction module and AI intelligent module, decode audio resources in the data storage module, control the rhythm feedback module to output corresponding rhythm and light feedback, and dynamically adjust the rhythm parameters according to the signal of the rhythm intensity adjustment knob.
[0044] It should be noted that the control module can receive various input signals from the human-computer interaction module in real time, such as power switch signals, mode switching signals, rhythm intensity adjustment signals, and volume adjustment signals. At the same time, it can quickly decode the audio resources in the data storage module and control the rhythm feedback module to output corresponding rhythmic sounds and light feedback according to the received signals, so as to realize the synchronous linkage of audio and light. In addition, the control module can accurately identify the signal of the rhythm intensity adjustment knob and dynamically adjust the rhythm parameters according to the adjustment range of the knob, so as to realize stepless adjustment of rhythm intensity and adapt to the acceptance ability of infants and young children of different ages.
[0045] In one embodiment of this application, the rhythm-linked lighting unit further includes a lighting driving circuit, which is connected to two LED beads 10. The LED beads 10 are tri-color LED beads that can change their light emission color and flashing frequency according to the rhythm intensity and beat changes of the audio output.
[0046] It should be noted that the LED bead 10 uses tri-color LED beads, which can automatically change the light color and flashing frequency according to the rhythm intensity and beat changes of the audio output. When the rhythm intensity is weak and the beat is slow, the LED bead emits a soft warm light and the flashing frequency is slow. When the rhythm intensity increases and the beat speeds up, the LED bead switches to bright colored light and the flashing frequency speeds up accordingly. This allows infants and young children to intuitively and clearly perceive the strength of the rhythm and the speed of the beat through the changes in light, thus deepening their understanding of rhythm and cadence.
[0047] In one embodiment of this application, such as Figure 1 As shown, the data storage module includes a memory and a memory card slot 12. The memory is located inside the housing 1, and the memory card slot 12 is located at the bottom of the housing 1.
[0048] It should be noted that the memory is located inside the casing 1 and is used to pre-store basic rhythmic learning audio resources. It can be used normally without the need to add an additional storage device. The memory card slot 12 is located at the bottom of the casing 1, adjacent to the charging port 11. It is compatible with common SD memory cards. Parents can insert a large-capacity memory card to add more rhythmic audio, nursery rhymes and other resources that infants and toddlers like, further expanding the use scenarios of the toy and meeting the long-term rhythmic learning needs of infants and toddlers. At the same time, the memory card slot can be equipped with a dust cover to effectively protect the inside of the slot from dust contamination.
[0049] In one embodiment of this application, the control module includes a microcontroller and an audio decoding chip. The microcontroller receives the digital signal from the rhythm intensity adjustment knob 6 and dynamically adjusts the rhythm intensity by changing the beat speed and note density.
[0050] It should be noted that the microcontroller integrated circuit board can receive the digital signal from the rhythm intensity adjustment knob 6 in real time. Through the built-in control algorithm, it changes the tempo and note density of the audio, thereby dynamically adjusting the rhythm intensity. The faster the tempo and the higher the note density, the stronger the rhythm intensity; the slower the tempo and the lower the note density, the weaker the rhythm intensity. This achieves stepless adjustment of the rhythm intensity, adapting to the rhythm perception ability of infants and young children of different ages. The audio decoding chip is used to decode the audio resources in the data storage module, converting the digital audio signal into an analog audio signal, and transmitting it to the speaker for playback, ensuring clear, smooth, and distortion-free audio playback.
[0051] In one embodiment of this application, the mode button 4 includes a music appreciation mode button, a rhythm game mode button, and a parent-child interaction mode button.
[0052] It should be noted that, to meet the needs of different usage scenarios and enhance the interactivity and practicality of the toys, the music appreciation mode is mainly used to play pre-stored rhythmic audio, allowing infants and toddlers to experience rhythm and develop basic rhythmic awareness through listening; the rhythm game mode features simple rhythmic interactive gameplay, allowing infants and toddlers to interact with the rhythm by pressing buttons and adjusting knobs, improving their fine motor skills and rhythm perception; the parent-child interaction mode supports joint participation by parents and infants and toddlers, allowing parents to guide infants and toddlers to play along with the rhythm by adjusting the rhythm intensity and switching audio, enhancing parent-child interaction and simultaneously assisting in the infants' and toddlers' rhythmic development.
[0053] In one embodiment of this application, such as Figure 1As shown, the power module also includes a power detection circuit and a low power indicator 13. The low power indicator 13 is located on the surface of the housing 1. When the voltage of the lithium battery is lower than a preset value, the low power indicator 13 will flash as a warning.
[0054] It should be noted that, to enhance the safety and practicality of the power module and to allow parents to easily monitor the toy's battery status, the power module also includes a power detection circuit and a low battery indicator light 13. The power detection circuit is electrically connected to the lithium battery, enabling it to monitor the remaining voltage of the lithium battery in real time and transmit the detection signal to the control module.
[0055] When the lithium battery voltage is lower than the preset safety threshold, the power detection circuit sends a signal to the control module. The control module then drives the low power indicator light 13 to flash regularly as a warning, reminding parents to charge the toy in time to prevent it from suddenly stopping due to insufficient power. This also protects the lithium battery and extends its lifespan.
[0056] In one embodiment of this application, such as Figure 1 As shown, the outer shell 1 is integrally molded from food-grade silicone material, and all edges and corners are rounded. The surface of the outer shell 1 is coated with an antibacterial coating.
[0057] It should be noted that, considering that infants and young children may bite or touch toys while playing, the outer shell 1 is made of food-grade silicone material in one piece. This material is non-toxic, odorless, soft and tough, and meets the safety standards for infant and young children's products. Even if infants and young children bite it, it will not cause harm to their health.
[0058] Meanwhile, all edges and corners of the outer shell 1 are rounded to prevent sharp edges from scratching the skin of infants and young children, thus improving safety. In addition, the surface of the outer shell 1 is also coated with an antibacterial coating, which has good antibacterial and bacteriostatic effects, effectively inhibiting the growth of common bacteria, keeping the toy surface clean, and further ensuring the safety of infants and young children.
[0059] In one embodiment of this application, the data storage module pre-stores rhythmic enlightenment audio resources including various nursery rhymes, classical music excerpts and percussion rhythm samples with different rhythm intensities. Each audio resource is accompanied by a rhythm intensity label. The control module selects the audio with the corresponding label for playback based on the signal of the rhythm intensity adjustment knob 6.
[0060] It should be noted that, in order to achieve accurate matching between rhythm intensity and audio resources and improve the relevance of rhythm enlightenment, the rhythm enlightenment audio resources pre-stored in the data storage module have been scientifically classified and labeled, specifically including nursery rhymes, classical music excerpts and percussion rhythm samples with different rhythm intensities.
[0061] The nursery rhymes are selected from classic pieces with upbeat rhythms and simple melodies, catering to the auditory preferences of young infants and toddlers; the classical music excerpts are selected from classic passages with soothing rhythms and beautiful melodies, cultivating the musical literacy of infants and toddlers; and the percussion rhythm samples include a variety of basic rhythm patterns, helping infants and toddlers perceive different rhythmic characteristics.
[0062] Each audio resource comes with a clear rhythm intensity label, which corresponds to different rhythm levels. The control module can automatically select the audio resource with the corresponding rhythm intensity label for playback based on the adjustment signal of the rhythm intensity adjustment knob 6, ensuring that the rhythm of the played audio is consistent with the adjusted intensity, thus achieving personalized and precise rhythm enlightenment.
[0063] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0064] The present application and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present application. The actual structure is not limited to this. In conclusion, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the spirit of the present application, such design should fall within the protection scope of the present application.
Claims
1. An adjustable rhythm intensity toy for infants and toddlers to develop rhythmic awareness, characterized in that: It includes a shell (1), a human-computer interaction module, a rhythm feedback module, a power supply module, a data storage module, an AI intelligence module, and a control module, among which, A handle (2) is provided on one side of the outer shell (1), and hanging ears (3) are provided on both sides of the top surface of the outer shell (1). The human-computer interaction module includes multiple mode buttons (4), a power button (5), a rhythm intensity adjustment knob (6), a volume button (7), and a sheet music slot (8). The mode buttons (4), the power button (5), the rhythm intensity adjustment knob (6), and the sheet music slot (8) are respectively disposed on the surface of the outer shell (1), and the volume button (7) is disposed on one side of the outer shell (1). The rhythm feedback module includes an audio output unit and a rhythm-linked lighting unit. The audio output unit includes an annular sound outlet (9) and a speaker. The annular sound outlet (9) is located in the center of the surface of the housing (1). The speaker is located inside the housing (1). The rhythm-linked lighting unit includes two LED beads (10). The LED beads (10) are located on the housing (1). The power module includes a lithium battery and a charging interface (11). The lithium battery is disposed inside the housing (1), and the charging interface (11) is disposed at the bottom of the housing (1). The data storage module is used to pre-store and retrieve rhythmic enlightenment audio resources, and supports external expansion; The AI intelligent module has a built-in infant rhythm enlightenment adaptation algorithm, which can recognize simple voice commands and emotional voice features of infants and toddlers, and collect data on infants and toddlers' operation behavior with toys. The control module is connected to the human-computer interaction module, the rhythm feedback module, the power supply module, the data storage module, and the AI intelligent module. It can receive signals from the human-computer interaction module and the AI intelligent module, decode audio resources in the data storage module, control the rhythm feedback module to output corresponding rhythm and light feedback, and dynamically adjust the rhythm parameters according to the signal of the rhythm intensity adjustment knob.
2. The adjustable rhythm intensity infant rhythm enlightenment toy according to claim 1, characterized in that, The rhythm-linked lighting unit also includes a lighting driving circuit, which is connected to two LED beads (10). The LED beads (10) are tri-color beads that can change their light emission color and flashing frequency according to the rhythm intensity and beat of the audio output.
3. The adjustable rhythm intensity infant rhythm enlightenment toy according to claim 1, characterized in that, The data storage module includes a memory and a memory card slot (12). The memory is located inside the housing (1), and the memory card slot (12) is located at the bottom of the housing (1).
4. The adjustable rhythm intensity infant rhythm enlightenment toy according to claim 1, characterized in that, The control module includes a microcontroller and an audio decoding chip. The microcontroller receives digital signals from the rhythm intensity adjustment knob (6) and dynamically adjusts the rhythm intensity by changing the beat speed and note density.
5. The adjustable rhythm intensity infant rhythm learning toy according to claim 1, characterized in that, The mode buttons (4) include music appreciation mode buttons, rhythm game mode buttons, and parent-child interaction mode buttons.
6. The adjustable rhythm intensity infant rhythm enlightenment toy according to claim 1, characterized in that, The power module also includes a power detection circuit and a low power indicator (13). The low power indicator (13) is located on the surface of the housing (1). When the voltage of the lithium battery is lower than a preset value, the low power indicator (13) flashes as a warning.
7. The adjustable rhythm intensity infant rhythm enlightenment toy according to claim 1, characterized in that, The outer shell (1) is integrally molded from food-grade silicone material, and all edges and corners are rounded. The surface of the outer shell (1) is provided with an antibacterial coating.
8. The adjustable rhythm intensity infant rhythm enlightenment toy according to claim 1, characterized in that, The data storage module pre-stores rhythmic enlightenment audio resources including various nursery rhymes, classical music excerpts and percussion rhythm samples with different rhythm intensities. Each audio resource is accompanied by a rhythm intensity label. The control module selects the audio with the corresponding label and plays it according to the signal of the rhythm intensity adjustment knob (6).