Karaoke lyric sound box and lyric display optimization method

Abstract

The invention relates to the technical field of sound equipment and lyric display, in particular to a karaoke lyric sound box and a lyric display optimization method. The sound box comprises a sound box body, a microcontroller, a display screen with higher resolution, a screen brightness sensor and a lyric display optimization algorithm module. Wherein the lyric display optimization algorithm module dynamically adjusts screen backlight intensity, lyric layout, font size and color according to ambient light intensity, automatically identifies lyric languages, and ensures that the lyric languages can be clearly read under different light conditions. In addition, the sound box is further provided with a camera for monitoring the distance between audiences, adaptively adjusting the font size, providing an eye protection mode and supporting multiple sound effect modes, so that the user experience and the visual comfort are remarkably improved.

Description

Technical Field

[0001] The present application relates to the technical field, and in particular to a karaoke lyrics speaker and a lyrics display optimization method. Background Art

[0002] This technology relates to the field of audio playback equipment, especially karaoke speakers for home entertainment, small gatherings and karaoke venues. In recent years, with the continuous improvement of people's living standards, the home entertainment market has developed rapidly. Various types of karaoke speakers have been widely welcomed for their portability and ease of use, which not only enriches people's spare time, but also promotes the progress of related industries. However, behind this prosperous market, there are still some problems that need to be solved, especially how to improve the user's audio-visual experience while ensuring cost-effectiveness.

[0003] There are three main types of karaoke speakers on the market: low-priced speakers without screen displays, mid-priced speakers with single-light-board lyrics display, and high-end speakers equipped with Android smart systems. Although low-priced speakers without screen displays are cheap, they cannot display lyrics synchronously, which seriously affects the karaoke experience; mid-priced speakers with single-light-board lyrics display solve the basic problem of lyrics synchronization display, but due to limited display technology, the display effect is not satisfactory; and although high-end speakers have excellent lyrics display effects, the high cost makes it difficult to popularize them to ordinary consumers.

[0004] Although the above-mentioned types of karaoke speakers have their own characteristics, there is a common problem in practical applications, that is, the lyrics display effect is not good under low-cost solutions. Using a single light board to display lyrics is a relatively common low-cost solution. It realizes the basic lyrics synchronization display function through simple hardware configuration. However, due to the limitations of the performance of the single light board itself, this solution leads to poor performance in terms of clarity, color saturation and contrast of the lyrics. Especially under different lighting conditions, the readability of the lyrics is greatly reduced, which seriously affects the user experience. Summary of the invention

[0005] The purpose of this application is to overcome the above technical problems and provide a karaoke lyrics speaker and lyrics display optimization method A karaoke lyrics speaker, comprising: Speaker body; A microcontroller, used to receive song files and parse lyrics information; a display screen with a higher resolution than existing single-light boards for displaying optimized lyrics; Screen brightness sensor, used to detect the ambient light intensity and transmit data to the microcontroller; The lyric display optimization algorithm module runs on a microcontroller and is used to dynamically adjust the screen backlight intensity, lyric layout, font size, and color according to the data of the screen brightness sensor; specifically, the lyric display optimization algorithm module includes: Dynamically adjust the screen backlight intensity according to the ambient light intensity value detected by the screen brightness sensor, so that the screen brightness adapts to the current ambient light conditions; Adjust the layout, font size, and color of the lyrics according to the screen size and the current ambient light intensity to ensure that the lyrics are clearly readable under different light conditions; Furthermore, the lyric display optimization algorithm module also includes the function of automatically identifying the lyric language, and can adjust the font style and layout according to the characteristics of different languages to improve the reading comfort.

[0006] By adopting the above technical solutions, not only the quality of lyric display is significantly improved, but also the user's audio-visual experience is enhanced. Specifically, the functions of dynamically adjusting the screen backlight intensity, lyric layout, font size, and color ensure the best visual effects under various light conditions. In addition, the design of automatically identifying the lyric language and optimizing the layout makes the display of lyrics in different languages more reasonable and comfortable, further improving the user's reading satisfaction.

[0007] Preferably, the display screen is a TFT liquid crystal display screen with a high-definition resolution of at least 1080p, which can maintain a high color saturation and contrast ratio at different viewing angles, thereby enhancing the overall visual experience.

[0008] By adopting the above technical solutions, the TFT liquid crystal display screen has a high-definition resolution of at least 1080p and can maintain a high color saturation and contrast ratio at different viewing angles, thereby significantly enhancing the overall visual experience.

[0009] Preferably, the microcontroller is also connected to a memory for storing the lyric information of multiple songs. The memory capacity is not less than 16GB, which is sufficient to accommodate a large number of high-quality audio files and corresponding lyric information, meeting the diverse entertainment needs of users.

[0010] By adopting the above technical solutions, the microcontroller is connected to a large-capacity memory, which can store the lyric information of multiple songs. The memory capacity is not less than 16GB, which is sufficient to accommodate a large number of high-quality audio files and corresponding lyric information, meeting the diverse entertainment needs of users. This not only expands the content library of the speaker but also improves the user experience, enabling the user to select a more diverse range of music and lyrics for playback on different occasions.

[0011] Preferably, it further includes a camera for monitoring the distance change between the audience and the screen and transmitting data to the microcontroller; the lyric display optimization algorithm module further includes an adaptive font scaling sub-module for automatically adjusting the lyric font size according to the distance data transmitted by the camera; the adaptive font scaling sub-module specifically includes: When the camera detects that the audience is approaching the screen (e.g., less than 2 meters), the system automatically reduces the font size. The font size adjustment range is preset between 16pt and 36pt to adapt to the visual needs of different users, so that the lyric content can be clearly recognized regardless of the distance. Furthermore, the adaptive font scaling sub-module also includes an automatic adjustment function for character spacing and line spacing to ensure that the text still maintains good readability and aesthetics at different sizes.

[0012] By adopting the above technical solution, the camera monitors the distance change between the audience and the screen and transmits the data to the microcontroller. The adaptive font scaling sub-module automatically adjusts the lyric font size according to the distance data. When the audience approaches the screen, the system automatically reduces the font size, and vice versa, ensuring that the lyrics are always clearly visible at different distances. The font size adjustment range is preset between 16pt and 36pt to adapt to the visual needs of different users. In addition, the adaptive font scaling sub-module also includes an automatic adjustment function for character spacing and line spacing to ensure that the text still maintains good readability and aesthetics at different sizes, thereby enhancing the user experience.

[0013] Preferably, the font size adjustment range of the adaptive font scaling sub-module is from 16pt to 36pt, and the actual resolution and ratio of the current screen will be considered during the adjustment to ensure the best display effect.

[0014] By adopting the above technical solution, the adaptive font scaling sub-module can automatically adjust the lyric font size according to the distance change between the audience detected by the camera and the screen. The font size adjustment range is limited to 16pt to 36pt, which not only meets the small font requirements for close viewing but also conforms to the large font needs for distant viewing. At the same time, the actual resolution and ratio of the current screen are comprehensively considered during the adjustment to ensure the best display effect under different screen specifications, thereby enhancing the user experience and making the lyrics clearly readable in any situation.

[0015] Preferably, it further includes an eye protection mode. When the continuous use time exceeds one hour, the screen backlight brightness is automatically reduced by 10%, and the font color changes to a warm tone; the eye protection mode specifically includes the following operation steps: Monitor the continuous use time of the user. When the continuous use time reaches or exceeds one hour, the screen backlight brightness is automatically reduced by 10%. Meanwhile, the font color gradually changes from the default color to a warm tone, reducing blue light radiation and protecting the user's eyesight. Furthermore, the eye protection mode also includes a function of reminding to rest regularly. It sends a reminder to the user every once in a while, suggesting a short break to relieve visual fatigue.

[0016] By adopting the above technical solutions, when the user continuously uses the KTV lyrics speaker for more than one hour, the screen backlight brightness automatically decreases by 10%, the font color changes to a warm tone, reducing blue light radiation, effectively reducing the harm to the eyes caused by long-term screen viewing. At the same time, the eye protection mode also includes a function of reminding to rest regularly. It sends a reminder to the user every once in a while, suggesting a short break, further relieving visual fatigue, and improving the user's comfort and health protection during use.

[0017] Preferably, it further includes a digital signal processor (DSP) for real-time processing of the input audio signal, including noise reduction filtering and dynamic range compression. The digital signal processor (DSP) specifically includes: Removing background noise through noise reduction filtering technology to improve the clarity of the human voice, making it suitable for use in noisy environments. Ensuring that the treble does not distort and the bass does not lose richness during music playback through dynamic range compression technology, ensuring the purity and richness of the sound. Furthermore, the DSP also supports multiple audio equalization modes, allowing users to adjust the ratio of high and low frequency bands according to personal preferences, providing a more personalized auditory experience.

[0018] By adopting the above technical solutions, the digital signal processor (DSP) effectively removes background noise and improves the clarity of the human voice by performing real-time processing on the input audio signal, including noise reduction filtering and dynamic range compression, making it particularly suitable for use in noisy environments. At the same time, the dynamic range compression technology ensures that the treble does not distort and the bass does not lose richness during music playback, enhancing the overall purity and richness of the sound. In addition, the DSP also supports multiple audio equalization modes, and users can adjust the ratio of high and low frequency bands according to personal preferences, providing a more personalized auditory experience.

[0019] Preferably, the DSP supports multiple sound effect modes. Users can select different sound effect modes in the device menu. Each mode corresponds to a specific DSP configuration, including but not limited to rock, jazz, classical, etc. Each mode has been professionally tuned to maximize the restoration of the original sound effect.

[0020] By adopting the above technical solutions, users can select different sound effect modes in the device menu, and each mode corresponds to a specific DSP configuration, including but not limited to rock, jazz, classical, etc. These modes are professionally tuned to restore the original sound effect to the greatest extent, thus providing users with a more personalized and high-quality auditory experience.

[0021] A method for optimizing lyric display, which is applied to the KTV lyric speaker as described in claim 1, includes the following steps: S1: Receive a song file and parse the lyric information; S2: Detect the ambient light intensity; S3: Dynamically adjust the screen backlight intensity; S4: Adjust the lyric layout, font size and color to adapt to different screen sizes and light conditions; S5: Automatically identify the language type of the lyrics, and adjust the corresponding font style and layout according to the identified language to improve the reading comfort; S6: During the lyric display process, continuously monitor the data of the screen brightness sensor to adjust the screen backlight intensity in a timely manner, ensuring the best display effect in any environment.

[0022] By adopting the above technical solutions, the highly adaptive lyric display in different environments is realized. This method can not only dynamically adjust the screen backlight according to the ambient light intensity, but also intelligently adjust the lyric layout, font size and color according to the screen size and light conditions, ensuring that the lyrics are clearly readable in various environments. At the same time, the design of automatically identifying the lyric language and optimizing the font style and layout further improves the user's reading comfort, making the entire KTV process more enjoyable.

[0023] A KTV system includes the KTV lyric speaker as described in claim 1 and a control terminal wirelessly communicatively connected thereto. The control terminal is used to send instructions to control the working state of the speaker; the control terminal can also establish a connection with the speaker through various wireless communication methods such as Bluetooth and WiFi, facilitating remote control by users; the control terminal also has a voice assistant function, and users can quickly switch tracks, adjust the volume or turn on special modes through voice commands, greatly improving the user experience.

[0024] By adopting the above technical solutions, the KTV system not only achieves a high-quality lyric display effect, but also significantly improves in terms of convenience. Users can remotely control various functions of the speaker through the control terminal, such as switching tracks, adjusting the volume, and enabling special modes, greatly simplifying the operation process. In particular, the introduction of the voice assistant function allows users to complete complex operations with simple voice commands, significantly enhancing the user experience. In addition, the control terminal supports multiple wireless communication methods (such as Bluetooth, WiFi), ensuring the stability and flexibility of the system and making it suitable for various usage scenarios.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. By adopting a high-resolution display screen and a lyric display optimization algorithm, the quality and clarity of lyric display are significantly improved, and a visual effect comparable to high-end products can be presented even in low-cost speakers; 2. Dynamically adjusting the screen backlight intensity, lyric layout, font size, and color to ensure the best lyric display effect under different light conditions and improving the user's audio-visual experience; 3. Automatically identifying the lyric language and adjusting the corresponding font style and layout, improving the reading comfort and meeting the needs of multi-language users. Description of the Drawings

[0026] Figure 1 is the principle block diagram of a KTV lyric speaker according to an embodiment of the present application.

[0027] Figure 2 is the flowchart of a lyric display optimization method according to an embodiment of the present application.

[0028] Figure 3 is the partial circuit schematic diagram of a KTV system according to an embodiment of the present application. Detailed Embodiments

[0029] Embodiment 1: Refer to Figure 1 and Figure 2, an embodiment of the present application provides a KTV lyrics speaker, which includes a speaker body, a microcontroller, a display screen, a screen brightness sensor, and a lyrics display optimization algorithm module. Among them, the speaker body serves as the basic framework of the entire device, supporting the installation and fixation of each component. The microcontroller is responsible for receiving song files and parsing the lyrics information, and through complex operations and processing, realizes the efficient display of lyrics. The display screen has a higher resolution than the existing single lamp board, and can maintain a high color saturation and contrast at different viewing angles, thereby enhancing the overall visual experience. The screen brightness sensor is used to detect the ambient light intensity and transmit the data to the microcontroller to ensure that the screen brightness adapts to the current ambient light conditions. The lyrics display optimization algorithm module runs on the microcontroller and dynamically adjusts the screen backlight intensity, lyrics layout, font size, and color according to the data of the screen brightness sensor to ensure that the lyrics are clearly readable under different light conditions.

[0030] Specifically, the display screen can adopt a TFT liquid crystal display screen or other high-resolution displays, such as an OLED display screen. The TFT liquid crystal display screen has a high-definition resolution of at least 1080p and can maintain a high color saturation and contrast at different viewing angles, which is suitable for the usage scenarios of home entertainment and small gatherings. The OLED display screen has more vivid colors and deeper black performance, which is suitable for the user needs of the high-end market. The screen brightness sensor can adopt components such as photodiodes or photoresistors, which can sensitively sense the changes in ambient light and convert them into electrical signals and transmit them to the microcontroller. The microcontroller can select a processor with an ARM architecture or a processor with a MIPS architecture. These processors have powerful computing capabilities and low power consumption characteristics, and can meet the requirements of real-time processing of a large amount of data. The lyrics display optimization algorithm module can dynamically adjust the screen backlight intensity according to the ambient light intensity value detected by the screen brightness sensor to make the screen brightness adapt to the current ambient light conditions. In addition, this algorithm module can also adjust the lyrics layout, font size, and color according to the screen size and the current ambient light intensity to ensure that the lyrics are clearly readable under different light conditions. Further, the lyrics display optimization algorithm module also includes the function of automatically identifying the lyrics language, and can adjust the font style and typesetting according to the characteristics of different languages to improve the reading comfort.

[0031] Specifically, the microcontroller is also connected to a memory for storing the lyrics information of multiple songs. The memory capacity is not less than 16GB, which is sufficient to accommodate a large number of high-quality audio files and corresponding lyrics information to meet the diverse entertainment needs of users. The memory can adopt forms such as flash chips or solid-state drives. These storage media have the advantages of high-speed read and write speeds and long service lives, and can ensure the security and reliability of data.

[0032] In addition, to improve the user experience, the speaker is also equipped with a camera for monitoring the distance change between the audience and the screen and transmitting the data to the microcontroller. The adaptive font scaling sub-module automatically adjusts the lyric font size according to the distance data transmitted by the camera. When the camera detects that the audience is approaching the screen (e.g., less than 2 meters), the system automatically reduces the font size. The font size adjustment range is preset between 16pt and 36pt to meet the visual needs of different users, so that the lyric content can be clearly recognized regardless of the distance. In addition, the adaptive font scaling sub-module also includes the function of automatically adjusting the letter spacing and line spacing to ensure that the text still maintains good readability and aesthetics at different sizes.

[0033] The implementation principle of this embodiment is as follows: Through the high-resolution display screen and the advanced lyric display optimization algorithm, the quality and clarity of the lyric display are significantly improved. Whether it is day or night, users can enjoy a professional-level Karaoke experience. At the same time, through the design of the adaptive font scaling technology and the eye protection mode, the comfort of long-term use by users is further enhanced, and the probability of visual fatigue is reduced. The whole set of solutions not only solves the problem of poor lyric display effect in the low-cost solution, but also improves the sound quality performance of the speaker to a certain extent, making it more competitive in the market.

[0034] Embodiment 2: The difference between this embodiment and the above embodiment is that a digital signal processor is added. Specifically, the digital signal processor is used for real-time processing of the input audio signal, including functions such as noise reduction filtering and dynamic range compression. This can significantly improve the audio quality without increasing additional costs. Even under high-volume conditions, the purity of the sound can be maintained, avoiding the common noise and sound quality loss problems of traditional speakers.

[0035] Specifically, a high-performance DSP chip can be selected for the digital signal processor, such as the C6000 series of Texas Instruments (TI) or the SHARC series of Analog Devices, Inc. These chips have powerful floating-point operation capabilities and can implement real-time audio processing tasks. The noise reduction filtering technology can effectively remove background noise and improve the clarity of the human voice, which is suitable for use in noisy environments. For example, in places such as bars or parties where the background noise is relatively large, the lyrics of traditional speakers are often masked, and this problem can be significantly improved through the noise reduction filtering technology. The dynamic range compression technology ensures that the treble does not distort and the bass does not lack richness during music playback, ensuring the purity and richness of the sound. Users can also freely switch between multiple sound effect modes, such as rock, jazz, classical, etc., in the device menu according to their personal preferences. Each mode has a unique DSP configuration, aiming to provide users with a personalized listening experience.

[0036] The implementation principle of this embodiment is as follows: By introducing a digital signal processor, the effective processing of audio signals is achieved, significantly improving the sound quality performance. The noise reduction and filtering technology removes background noise, enhancing the clarity of vocals and making it suitable for use in noisy environments. The dynamic range compression technology ensures that the high notes do not distort and the low notes do not lack richness during music playback, guaranteeing the purity and richness of the sound. Users can choose different sound effect modes according to their preferences to enjoy a personalized auditory experience. This not only increases the added value of the product but also brings more convenience and fun to users.

[0037] Embodiment 3: The difference between this embodiment and the above-mentioned embodiment is that an eye protection mode is added. Specifically, when the continuous usage time exceeds one hour, the screen backlight brightness automatically decreases by 10%, and the font color changes to a warm color tone. This design helps reduce blue light radiation and protects the user's eyesight. In addition, the eye protection mode also includes a function of periodically reminding the user to take a break, sending a reminder to the user at regular intervals, suggesting a short break to relieve visual fatigue.

[0038] Specifically, the implementation of the eye protection mode requires the assistance of a microcontroller and a screen brightness sensor. The microcontroller monitors the user's continuous usage time through the built-in timer module. When the continuous usage time reaches or exceeds one hour, it triggers the operation of automatically reducing the screen backlight brightness by 10%. At the same time, the font color gradually changes from the default color to a warm color tone, reducing blue light radiation and protecting the user's eyesight. In addition, the microcontroller will also regularly check whether the user is in a long-term usage state. If it detects that the user has been continuously using for a long period of time, it will pop up a reminder message on the screen or issue a sound alert to remind the user to take an appropriate break to relieve visual fatigue.

[0039] The implementation principle of this embodiment is as follows: Through the design of the eye protection mode, the visual fatigue problem caused by the user's long-term usage is effectively alleviated. The automatic reduction of the screen backlight brightness and the change of the font color reduce the impact of blue light radiation on the eyes and protect the user's eyesight health. The function of periodically reminding the user to take a break helps the user reasonably arrange the usage time and avoid overexertion. This not only improves the user experience of the product but also helps to extend the service life of the product and win the favor of more consumers.

[0040] Embodiment 4: The difference between this embodiment and the above-mentioned embodiments is that a method for optimizing lyric display is provided. Specifically, this method includes the following steps: Receive the song file and parse the lyric information. The microcontroller obtains the song file through methods such as USB interface, SD card, or network download, and then parses the embedded lyric information in it.

[0041] Detect the ambient light intensity. The screen brightness sensor continuously detects the light intensity of the surrounding environment and transmits the data to the microcontroller.

[0042] Dynamically adjust the screen backlight intensity. The microcontroller dynamically adjusts the screen backlight intensity according to the received light intensity data, so that the screen brightness adapts to the current ambient light conditions.

[0043] Adjust the lyrics layout, font size and color to adapt to different screen sizes and light conditions. The microcontroller adjusts the layout, font size and color of the lyrics according to the screen size and the current ambient light intensity, ensuring that the lyrics are clearly readable under different light conditions.

[0044] Automatically identify the language type of the lyrics and adjust the corresponding font style and layout according to the identified language to improve the reading comfort. For example, for Chinese lyrics, Song typeface or Kai typeface can be selected; for English lyrics, Arial or Times New Roman can be selected.

[0045] During the lyrics display process, continuously monitor the data of the screen brightness sensor to timely adjust the screen backlight intensity, ensuring the best display effect in any environment.

[0046] The implementation principle of this embodiment is as follows: Through a series of precise steps, the optimization of lyrics display is achieved. From receiving the song file to the final lyrics display, every link has been carefully designed and optimized to ensure that users can obtain the best audio-visual experience in various environments. Especially under different light conditions, by dynamically adjusting the screen backlight intensity and lyrics display parameters, the lyrics always remain clearly readable, improving the user satisfaction and usage experience.

[0047] Embodiment 5: Refer to Figure 3 This embodiment is different from the above embodiment in that it provides a KTV system. Specifically, this system includes a KTV lyrics speaker and a control terminal wirelessly communicatively connected thereto. The control terminal is used to send instructions to control the working state of the speaker, and can establish a connection with the speaker through various wireless communication methods such as Bluetooth and Wi-Fi, facilitating remote control by users. The control terminal also has a voice assistant function, and users can quickly switch tracks, adjust the volume or activate special modes through voice commands, greatly improving the user experience.

[0048] Specifically, the wireless communication between the KTV lyric speaker and the control terminal can adopt Bluetooth Low Energy (BLE) or Wi-Fi technology. The BLE technology features low power consumption and short latency, making it suitable for short-distance communication; the Wi-Fi technology has a larger coverage range and faster transmission rate, making it suitable for long-distance communication. The control terminal can be a smartphone application or a dedicated remote control. Users can easily control various functions of the speaker by simply touching the screen or pressing a button. The voice assistant function is based on natural language processing (NLP) technology. It collects the user's voice commands through a microphone and processes them through a cloud server to return corresponding control commands. For example, users can say "next song", "increase volume" or "turn on night mode", and the speaker will immediately respond and perform the corresponding operations.

[0049] The implementation principle of this embodiment is as follows: By integrating the KTV lyric speaker and the control terminal, a complete KTV system is formed. Users can not only enjoy high-quality lyric display and sound quality experience, but also achieve a more user-friendly interaction experience through convenient remote control and voice assistant functions. Such a design not only simplifies the user's operation process, but also improves the intelligence level of the product, making it stand out in the highly competitive market.

[0050] The above are all the preferred embodiments of this application. It does not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A karaoke lyrics speaker, characterized in that: include: Speaker body; A microcontroller, used to receive song files and parse lyrics information; a display screen with a higher resolution than existing single-light boards for displaying optimized lyrics; Screen brightness sensor, used to detect the ambient light intensity and transmit data to the microcontroller; The lyrics display optimization algorithm module runs on the microcontroller and is used to dynamically adjust the screen backlight intensity, lyrics layout, font size and color according to the data of the screen brightness sensor; the lyrics display optimization algorithm module specifically includes: Dynamically adjust the screen backlight intensity based on the ambient light intensity value detected by the screen brightness sensor to adapt the screen brightness to the current ambient light conditions; Adjust the layout, font size and color of lyrics according to the screen size and current ambient light intensity to ensure that the lyrics are clearly readable under different lighting conditions; The lyrics display optimization algorithm module also includes a function of automatically identifying the language of the lyrics, and can adjust the font style and layout according to the characteristics of different languages ​​to improve reading comfort.

2. The karaoke lyrics speaker according to claim 1, characterized in that: The display screen is a TFT liquid crystal display screen with a high-definition resolution of at least 1080p, and can maintain high color saturation and contrast at different viewing angles, thereby improving the overall visual experience.

3. The karaoke lyrics speaker according to claim 1, characterized in that: The microcontroller is also connected to a memory for storing lyrics information of multiple songs. The memory capacity is no less than 16GB, which is enough to accommodate a large number of high-quality audio files and corresponding lyrics information to meet the diverse entertainment needs of users.

4. The karaoke lyrics speaker according to claim 1, characterized in that: It also includes a camera for monitoring the distance change between the audience and the screen and transmitting the data to the microcontroller; the lyrics display optimization algorithm module also includes an adaptive font scaling submodule for automatically adjusting the lyrics font size according to the distance data transmitted by the camera; The adaptive font scaling submodule specifically includes: When the camera detects that the viewer is close to the screen (e.g., less than 2 meters), the system automatically reduces the font size; The font size adjustment range is preset to between 16pt and 36pt to meet the visual needs of different users, so that the lyrics can be clearly identified regardless of distance; Furthermore, the adaptive font scaling submodule also includes an automatic adjustment function for character spacing and line spacing, ensuring that the text remains readable and aesthetically pleasing at different sizes.

5. The karaoke lyrics speaker according to claim 4, characterized in that: The font size adjustment range of the adaptive font scaling submodule is 16pt to 36pt, and the actual resolution and ratio of the current screen are taken into consideration during the adjustment process to ensure the best display effect.

6. The karaoke lyrics speaker according to claim 1, characterized in that: It also includes an eye protection mode. When the continuous use time exceeds one hour, the screen backlight brightness is automatically reduced by 10%, and the font color is changed to warm tones; the eye protection mode specifically includes the following operating steps: Monitor the continuous usage time of users; When the continuous use time reaches or exceeds one hour, the screen backlight brightness will automatically decrease by 10%; At the same time, the font color gradually changes from the default color to a warm tone to reduce blue light radiation and protect the user's eyesight; Furthermore, the eye protection mode also includes a function of regularly reminding users to take a break, which prompts the user at regular intervals and suggests taking a short break to relieve eyestrain.

7. The karaoke lyrics speaker according to claim 1, characterized in that: It also includes a digital signal processor (DSP) for real-time processing of input audio signals, including noise reduction filtering and dynamic range compression; the digital signal processor (DSP) specifically includes: The background noise is removed through noise reduction filtering technology to improve the clarity of human voice, which is suitable for use in noisy environments; Dynamic range compression technology is used to ensure that the treble is not distorted and the bass remains rich when playing music, ensuring the purity and richness of the sound; Furthermore, the DSP also supports multiple audio equalization modes, allowing users to adjust the ratio of high and low frequency bands according to personal preferences, providing a more personalized listening experience.

8. The karaoke lyrics speaker according to claim 7, characterized in that: The DSP supports multiple sound effect modes. Users can select different sound effect modes in the device menu. Each mode corresponds to a specific DSP configuration, including but not limited to rock, jazz, classical, etc. Each mode has been professionally tuned to restore the original sound effect to the maximum extent.

9. A lyrics display optimization method, applied to the karaoke lyrics speaker as claimed in claim 1, characterized in that: The following steps are involved: S1: Receive song files and parse lyrics information; S2: Detect ambient light intensity; S3: Dynamically adjust the screen backlight intensity; S4: Adjust lyrics layout, font size and color to suit different screen sizes and lighting conditions; S5: Automatically identify the language type of the lyrics and adjust the font style and layout according to the identified language to improve reading comfort; S6: During the lyrics display process, the screen brightness sensor data is continuously monitored to adjust the screen backlight intensity in time to ensure the best display effect in any environment.

10. A karaoke system, characterized in that: It comprises the karaoke lyrics speaker as claimed in claim 1 and a control terminal wirelessly connected thereto, wherein the control terminal is used to send instructions to control the working state of the speaker; the control terminal can also establish a connection with the speaker through a variety of wireless communication methods such as Bluetooth and WiFi, so as to facilitate remote control by users; the control terminal also has a voice assistant function, and users can quickly switch tracks, adjust the volume or turn on special modes through voice commands, which greatly improves the user experience.

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