Intelligent control method and system for audio equipment

Abstract

The present invention relates to the field of audio device control technology, and in particular to an intelligent control method and system for audio devices, comprising the following steps: obtaining the temperature inside the earmuff of a headphone, and controlling an exhaust module to adjust the temperature inside the earmuff according to a preset temperature adjustment rule; obtaining the environment in which the headphone is located, and adjusting the playback mode of the headphone according to different environments; obtaining the sound of a person or object in the environment in which the headphone is located, and prompting the headphone user according to preset prompt information; obtaining the distance between the person or object in the environment in which the headphone is located and the headphone user, and prompting the headphone user according to a preset distance range. Through the above-mentioned intelligent control method, the present invention enables the headphone to realize functions such as automatic temperature adjustment inside the earmuff, environmental adaptation, sound recognition, and distance perception, significantly improving the user's wearing comfort and usage experience.

Description

Technical Field

[0001] The present invention relates to the technical field of audio equipment control, and in particular to an intelligent control method and system for audio equipment. Background Art

[0002] With the popularity of audio devices, especially headphones, users are increasingly demanding smart headphones. Traditional headphones focus primarily on sound quality and comfort, but are clearly lacking in intelligent control.

[0003] This is particularly true for headphones. For example, over extended use, the temperature inside the earcups gradually rises, causing discomfort. The headset's playback mode doesn't automatically adjust in different environments, impacting the user experience. The headset can't recognize key sounds or keywords in the surrounding environment, preventing timely alerts. The headset can't sense the distance between the user and surrounding people or objects, preventing them from providing appropriate safety alerts. These issues severely impact the headset's intelligence and user experience, necessitating improvements. Summary of the Invention

[0004] The purpose of the present invention is to address the shortcomings of the existing technology and provide an intelligent control method and system for audio equipment. Through the above-mentioned intelligent control method, headphones can realize functions such as automatic adjustment of the internal temperature of the earmuffs, environmental adaptation, sound recognition and distance perception, significantly improving the user's wearing comfort and usage experience.

[0005] To achieve the above object, the present invention provides an intelligent control method for an audio device, comprising the following steps:

[0006] Obtaining the temperature inside the earmuff of the headphone, determining whether the temperature inside the earmuff is within a preset temperature adjustment value range, and controlling the exhaust module to adjust the temperature inside the earmuff of the headphone according to the preset temperature adjustment rule;

[0007] Obtain the environment in which the headphones are located and adjust the playback mode of the headphones according to different environments;

[0008] Acquire the sounds of people or objects in the environment where the headset is located, determine whether there are preset keywords and sounds, and prompt the headset user according to the preset prompt information;

[0009] Obtain the distance between the person or object in the headset environment and the headset user, determine whether it is within a preset distance range, and prompt the headset user based on the preset distance range.

[0010] The present invention also provides an intelligent control system for an audio device, wherein the intelligent control system for the audio device is applied to the intelligent control method for the audio device as described above, and the intelligent control system for the audio device includes:

[0011] The temperature control module collects the internal temperature of the earmuff through a temperature sensor, determines whether the temperature is within a preset range, controls the air extraction module (1) to adjust the temperature according to preset rules, and controls the power and operating time of the air extraction module (1);

[0012] The environment perception and playback mode adjustment module collects environmental information through the camera and microphone array, identifies the environment type, adjusts the playback mode according to the environment type, and controls the headphones to play in the corresponding mode;

[0013] The keyword and sound detection module collects ambient sound through a microphone array, uses speech recognition and sound detection algorithms to determine whether there are preset keywords or sounds, and issues prompts to the user based on the preset prompt information;

[0014] The distance detection and prompt module uses ultrasonic sensors, infrared sensors or cameras to collect the distance between the headphone user and the people or objects in the environment where the headphone is located, determines whether the distance is within a preset range, and issues a prompt to the user based on the preset distance range.

[0015] The beneficial effects of the present invention are as follows: the present invention monitors the temperature inside the earmuff in real time through a temperature sensor. When the temperature exceeds a preset range, the exhaust module is controlled to cool down the earmuff, thereby ensuring that the temperature inside the earmuff is always within a comfortable range.

[0016] The headset uses environmental sensors to identify the environment in which the headset is located and automatically adjusts the headset's playback mode according to the environment type to adapt to the user's needs in different environments;

[0017] The microphone array captures sounds in the surrounding environment, uses voice recognition technology to determine whether there are preset keywords or sounds, and sends prompts to users through the headphones to help users obtain important information in a timely manner;

[0018] Use distance sensors or cameras to monitor the distance between the user and surrounding people or objects in real time. When the distance exceeds or falls below the preset range, the user will be notified through the headset to enhance the user's sense of security.

[0019] Through the above-mentioned intelligent control method, the headphones can realize functions such as automatic adjustment of the internal temperature of the earmuffs, environmental adaptation, sound recognition and distance perception, significantly improving the user's wearing comfort and usage experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 This is a schematic cross-sectional view of the earmuff of the present invention.

[0022] Figure 3 It is a structural schematic diagram of the heat exchange channel of the present invention.

[0023] Figure 4 It is a schematic diagram of the top structure of the present invention.

[0024] Reference numerals include:

[0025] 1. Exhaust module; 11. Radiator; 13. Heat dissipation and heat conduction member; 131. Mounting portion; 14. Exhaust pump; 15. Heat exchange channel; 151. First silencer chamber; 152. Second silencer chamber; 1521. Air blocking column; 153. Heat exchange chamber; 1531. Heat exchange and heat conduction plate; 154. Active silencer chamber; 155. First microphone; 156. Active noise reduction speaker; 2. Sound-absorbing material; 21. Air channel; 22. First channel; 23. Second channel; 24. Sealing ring; 25. Limit block; 251. Sliding groove; 252. Limit groove; 26. Lock block; 3. Micro camera. DETAILED DESCRIPTION

[0026] The present invention is described in detail below with reference to the accompanying drawings.

[0027] like Figures 1 to 4 As shown, the intelligent control method of an audio device of the present invention includes the following steps:

[0028] Obtaining the temperature inside the earmuff of the headphone, determining whether the temperature inside the earmuff is within a preset temperature adjustment value range, and controlling the exhaust module 1 to adjust the temperature inside the earmuff of the headphone according to the preset temperature adjustment rule;

[0029] Obtain the environment in which the headphones are located and adjust the playback mode of the headphones according to different environments;

[0030] Acquire the sounds of people or objects in the environment where the headset is located, determine whether there are preset keywords and sounds, and prompt the headset user according to the preset prompt information;

[0031] Obtain the distance between the person or object in the headset environment and the headset user, determine whether it is within a preset distance range, and prompt the headset user based on the preset distance range.

[0032] Automatic temperature adjustment is achieved. By obtaining the temperature inside the earmuff of the headphone and controlling the exhaust module 1 according to the preset temperature adjustment rules, the temperature inside the earmuff can be effectively adjusted, avoiding users feeling uncomfortable due to long-term use of the headphones and improving wearing comfort.

[0033] An environment-adaptive playback mode has been implemented. By obtaining the environment in which the headphones are located, the playback mode of the headphones is automatically adjusted to ensure that users can get the best sound experience in different environments and improve user satisfaction.

[0034] It realizes keyword and sound recognition. By acquiring the voices of people or objects in the environment where the headset is located, it determines whether there are preset keywords and sounds, and prompts the user according to the preset prompt information, helping the user to obtain important information in time and improving the intelligence level of the headset.

[0035] Distance perception and prompting are realized. By obtaining the distance between the user and people or objects in the environment where the headset is located, it is determined whether it is within the preset distance range, and prompts the user according to the preset distance range, enhancing the user's sense of security and usage experience.

[0036] During use, the temperature inside the earmuff is monitored in real time through the temperature sensor. When the temperature exceeds a preset range, the exhaust module 1 is controlled to cool down to ensure that the temperature inside the earmuff is always within a comfortable range.

[0037] The environmental sensor identifies the environment in which the headphones are located (such as indoor, outdoor, noisy environment, etc.) and automatically adjusts the playback mode of the headphones (such as noise reduction mode, transparency mode, etc.) according to the environment type to adapt to the needs of users in different environments.

[0038] The microphone array captures the sounds in the surrounding environment, and uses voice recognition technology to determine whether there are preset keywords or sounds. It then sends prompts to users through headphones to help them obtain important information in a timely manner.

[0039] Through devices such as distance sensors or cameras, the distance between the user and surrounding people or objects is monitored in real time. When the distance exceeds or falls below the preset range, a prompt is issued to the user through the headset to enhance the user's sense of security.

[0040] Through the above-mentioned intelligent control method, the headphones can realize functions such as automatic adjustment of the internal temperature of the earmuffs, environmental adaptation, sound recognition and distance perception, significantly improving the user's wearing comfort and usage experience.

[0041] like Figure 2 As shown, the range of the preset temperature adjustment value in this embodiment is ≥25°C. The air extraction module 1 includes a radiator 11, a heat dissipation conductive member 13, and an air extraction pump 14. The heat dissipation conductive member 13 is provided with a heat exchange channel 15. The radiator 11 is used to cool the heat dissipation conductive member 13 to reduce the temperature of the heat exchange channel 15. The air extraction pump 14 is connected to the inside of the earmuff and is used to extract air from the inside of the earmuff so that external air enters the inside of the earmuff through the heat exchange channel 15.

[0042] The adjustment rules for the preset temperature are:

[0043] When the temperature outside the earphone is 25°C-30°C, the air pump 14 is controlled to evacuate the inside of the earmuff, so that the external air enters the earmuff through the heat exchange channel 15 of the heat dissipation and heat conduction member 13;

[0044] When the temperature outside the earphone is 30°C, the radiator 11 and the air pump 14 are controlled to work simultaneously, and the radiator 11 cools the heat dissipation conductive member 13 so that the external air exchanges heat with the heat dissipation conductive member 13 and then enters the earmuff of the earphone through the heat exchange channel 15.

[0045] Automatic temperature adjustment is achieved to improve wearing comfort. By real-time monitoring of the temperature inside the earmuffs of the headphones and dynamically adjusting the working states of the exhaust module 1 and the radiator 11 according to the external ambient temperature, the temperature inside the earmuffs can be effectively reduced, avoiding users feeling stuffy and uncomfortable due to wearing headphones for a long time, and significantly improving wearing comfort.

[0046] Energy saving and environmental protection are achieved, energy consumption is optimized, and according to different external ambient temperatures, the working modes of the vacuum pump 14 and the radiator 11 are intelligently controlled to work independently or in coordination, thereby avoiding unnecessary energy consumption and achieving energy saving and environmental protection effects.

[0047] Air circulation is achieved and the ear environment is improved. The air inside the earmuff is extracted through the air pump 14, and the heat-exchanged external air is introduced, which can improve the air circulation inside the earmuff, reduce the accumulation of moisture and odor, and further enhance the user's wearing experience.

[0048] The heat dissipation and heat conduction member 13 is usually made of aluminum alloy or thermally conductive plastic because these materials have the advantages of being lightweight and low-cost while meeting the heat conduction requirements. If higher thermal conductivity is required, copper or graphite materials may be used, but the cost and weight need to be balanced.

[0049] The radiator is a fan or a liquid cooling system. In this embodiment, the radiator is taken as a fan. The fan is used to force air flow to improve heat dissipation efficiency.

[0050] like Figure 2 As shown, the heat dissipation and heat conduction member 13 of this embodiment is provided with a mounting portion 131 on the outside, and the heat sink 11 is fixed to the mounting portion 131;

[0051] like Figure 3 As shown, a first silencing chamber 151 , a second silencing chamber 152 , a heat exchange chamber 153 and an active silencing chamber 154 are provided inside the heat exchange channel 15 .

[0052] The inner wall of the first silencer cavity 151 is roughened to absorb the noise generated by airflow vibration, thereby reducing high-frequency noise by friction and absorbing the noise generated by airflow vibration.

[0053] A plurality of air-blocking columns 1521 for breaking up the airflow are provided inside the second muffler cavity 152 . By providing a plurality of air-blocking columns 1521 inside, the airflow is broken up and the airflow velocity is reduced, thereby reducing turbulent noise.

[0054] The heat exchange cavity 153 is provided with a plurality of heat-exchanging heat-conducting sheets 1531 . External air enters the earmuff through the heat exchange channel 15 . The heat-exchanging heat-conducting sheets 1531 in the heat exchange cavity 153 exchange heat with the air to reduce the air temperature.

[0055] The active sound-cancelling cavity 154 is provided with a first microphone 155 and an active noise reduction speaker 156. The noise in the active sound-cancelling cavity 154 is obtained by the first microphone 155. The active noise reduction speaker 156 is controlled according to the noise in the active sound-cancelling cavity 154 to generate reverse sound waves to cancel the noise. The noise is canceled by sound wave interference to achieve an active noise reduction effect.

[0056] The outlet of the heat exchange channel 15 is arranged inside the earmuff of the headphone, corresponding to the back of the ear of the user.

[0057] External air is introduced through the heat exchange channel 15 to dissipate heat to the skin around the back of the ear and adjust the temperature inside the earmuff. The cold air directly acts on the skin behind the ear, achieving efficient heat dissipation.

[0058] Efficient heat dissipation and temperature regulation are achieved by drawing outside air into the earmuffs through heat exchange channels 15, dissipating heat directly to the skin behind the ears, effectively reducing the temperature inside the earmuffs and improving wearing comfort. Heat exchanger plates 1531 within heat exchange chamber 153 further enhance the heat exchange efficiency between air and heat dissipation element 13, ensuring effective heat dissipation.

[0059] Noise control and noise reduction are achieved. First, passive noise reduction is achieved. Specifically, the rough inner wall of the first silencing chamber 151 absorbs the noise generated by airflow vibration, and the air blocking column 1521 in the second silencing chamber 152 breaks up the airflow, reducing airflow noise. Then, active noise reduction is achieved. The first microphone 155 and active noise reduction speaker 156 in the active silencing chamber 154 detect and generate reverse sound waves in real time to cancel out noise, further enhancing the user's listening experience.

[0060] To achieve optimal airflow and comfort, the design of heat exchange channel 15 not only dissipates heat but also optimizes airflow through the silencer cavity and air blocking column 1521, reducing airflow noise and discomfort. The outlet of heat exchange channel 15 is located behind the ear, dissipating heat directly to the skin behind the ear, avoiding the feeling of stuffiness caused by excessive internal temperature.

[0061] The headset achieves multifunctional integration and intelligence, integrating heat dissipation, noise reduction, and airflow optimization functions into one, enabling intelligent control of the headset. Through active noise reduction technology, the noise reduction effect can be adjusted in real time according to the ambient noise, improving the user experience.

[0062] like Figure 2 As shown, the inner edge of the earmuff of the headphone of this embodiment is provided with a sound-absorbing material 2 for sealing the earmuff, and the sound-absorbing material 2 is provided with a ventilation channel 21. The air pump 14 is provided on the outside of the ventilation channel 21. (Preferably, the shell of the air pump 14 is provided with a buffer structure. The air pump 14 is fixed to the earmuff through the buffer structure and connected to the ventilation channel 21 to adjust the temperature inside the earmuff. The buffer structure of the air pump 14 reduces vibration transmission and further improves wearing comfort.

[0063] A sound-insulating, breathable membrane is provided between the ventilation channel 21 and the air pump 14. This membrane reduces external noise from entering the ventilation channel 21, enhancing the noise reduction effect. This further blocks the noise from the air pump 14 during operation, ensuring that users enjoy a pure music experience.

[0064] The sound absorbing material 2 may be a porous foam material, a micro-perforated material or an aerogel material.

[0065] like Figure 2 As shown, specifically, the air permeable channel 21 includes a first channel 22 provided on the outer shell of the earphone and a second channel 23 provided at one end of the sound-absorbing material 2. The first channel 22 and the second channel 23 are slidably connected, and the air pump 14 is provided on the outer shell of the earphone and connected to the first channel 22. When the air pump 14 is working, the air inside the earmuff of the earphone enters the second channel 23 and the first channel 22 through the air permeable channel 21 and is discharged outward through the air pump 14. By pulling the sound-absorbing material 2, the second channel 23 can be made to slide along the first channel 22, increasing the internal space of the earmuff and making it easier for users to adjust the distance between their ears and the speaker of the earphone. This adapts to the ear shapes and personal preferences of different users. By adjusting the distance between the ear and the speaker, users can optimize the sound propagation effect and improve the sound quality experience.

[0066] Both the first channel 22 and the second channel 23 are equipped with a sealing ring 24. This seal enhances the sealing between the first channel 22 and the second channel 23 during sliding, preventing air leakage and ensuring efficient airflow through the ventilation channel. The sealing ring 24 not only improves the sealing but also provides a certain damping effect during the sliding process, ensuring smoother movement of the sound-absorbing material and preventing loosening or shaking during sliding. It also reduces the conduction of external noise into the earcup, impacting the listening experience. The sealing ring 24 also acts as a limiter between the first channel 22 and the second channel 23, ensuring they remain connected.

[0067] like Figure 4 As shown, a plurality of limit blocks 25 are provided within the first channel 22. Sliding grooves 251 are formed between the longitudinal limit blocks 25, and limiting grooves 252 are formed between the transverse limit blocks 25. A locking block 26 is provided on the outer wall of the second channel 23. Pulling the sound-absorbing material 2 to slide the locking block 26 along the sliding groove 251 adjusts the axial position between the first channel 22 and the second channel 23. Rotating the sound-absorbing material 2 to engage the locking block 26 of the second channel 23 with the limiting groove 252 locks the position between the first channel 22 and the second channel 23, confirming that the connection between the first channel 22 and the second channel 23 is stable, making it easier for the user to lock the connection between the first channel 22 and the second channel 23.

[0068] The frequency spectrum of the song played on the earphone is divided into four parts: prelude, verse, chorus, bridge and outing, and the working power of the air pump 14 is dynamically controlled;

[0069] The formula for determining the song part is:

[0070] Where E(t) is the energy at time t; fc(t) is the frequency of the center of gravity of the spectrum at time t; B(t) is the bandwidth of the spectrum at time t; R(t) is the beat intensity at time t;

[0071] E max 、f max 、B max 、R max They are the maximum values ​​of spectrum energy, center frequency, bandwidth, and beat intensity;

[0072] α, β, γ, and δ are weight coefficients, α+β+γ+δ=1;

[0073] If S(t) <T intro , then it is judged as a prelude;

[0074] If T intro ≤S(t)<T verse , then judge it as the main song;

[0075] If T verse ≤S(t) <T chorus , then it is judged to be the chorus;

[0076] If T chorus ≤S(t) <T bridge , then it is judged as a bridge segment;

[0077] If S(t)≥T bridge , it is judged as the coda;

[0078] T intro 、T verse 、Tchorus 、T bridge are all state judgment thresholds, specifically, T intro =0.3, T verse =0.5,

[0079] T chorus =0.7, T bridge =0.9;

[0080] P min and P max are the lowest and highest powers of the air pump 14, respectively. The lowest power P is used for the prelude, bridge and end. min , the verse and chorus use higher power P max ;

[0081] The formula for power P(t) is:

[0082]

[0083] Dynamic heat dissipation and energy-saving optimization are achieved by dividing the song's spectrum into four parts: intro, verse, chorus, bridge, and outro. The operating power of the vacuum pump 14 is dynamically adjusted, achieving intelligent heat dissipation control. During low-energy sections (such as the intro, bridge, and outro), the vacuum pump 14 operates at its lowest power, while during high-energy sections (such as the verse and chorus), the vacuum pump 14 uses a higher power. This ensures effective heat dissipation while reducing energy consumption. This also reduces the impact of noise from the vacuum pump 14 on song playback.

[0084] The design of the sound-absorbing material 2 and the sound-insulating breathable membrane effectively reduces external noise from entering the earphones, enhancing the noise reduction effect. The sound-insulating breathable membrane between the ventilation channel 21 and the air pump 14 further blocks the noise generated by the air pump 14 during operation, ensuring that users enjoy a pure music experience.

[0085] The wearing comfort is improved. The sound-absorbing material 2 not only seals the earmuff, but also enables air circulation through the ventilation channel 21, thereby avoiding stuffiness and humidity inside the earmuff.

[0086] It realizes intelligent music perception and control, and judges the different parts of the song, such as the prelude, verse, chorus, bridge and outing, in real time through spectrum analysis, and dynamically adjusts the power of the vacuum pump 14 according to the energy, spectrum center frequency, bandwidth and beat intensity of the music, thus realizing intelligent control.

[0087] The calculation formula for the energy E(t) of the spectrum signal at time t in this embodiment is:

[0088]

[0089] Among them, x i(t) is the i-th sampling point of the spectrum signal at time t, and N is the number of sampling points in the window; the audio signal is subjected to short-time Fourier transform (STFT) to obtain the spectrum S(f, t), which is used to calculate the center frequency f of the audio c (t), center of gravity frequency f c The calculation formula for (t) is:

[0090]

[0091] The bandwidth of the spectrum B(t) is calculated as follows:

[0092]

[0093] The calculation formula of the beat intensity R(t) of the spectrum signal is:

[0094] R(t) = beat detection algorithm (x(t)). (Specifically, a beat detection algorithm based on energy or spectrum can be used.)

[0095] By calculating the energy, center frequency, bandwidth, and beat intensity of the spectrum signal, it achieves precise analysis and intelligent control of the audio signal. This improves the intelligence level of audio equipment and the user experience, while also achieving efficient energy consumption management and multi-functional integration.

[0096] Assumptions: α=0.4, β=0.3, γ=0.2, δ=0.1;

[0097] E max =100,f max =5000Hz, B max =2000Hz, R max =10;

[0098] T intro =0.3, T verse =0.5, T chorus =0.7, T bridge =0.9;

[0099] P min =1W, P max =5W.

[0100] For example,

[0101] E(t)=20,f c (t)=1000Hz, B(t)=500Hz, R(t)=2.

[0102] Substitute into the formula to calculate S(t) = 0.21;

[0103] Judgment: S(t)<0.3, which is the prelude.

[0104] Power of the air pump (14): P(t)=1W.

[0105] For example,

[0106] E(t)=50,f c (t)=2000Hz, B(t)=1000Hz, R(t)=5.

[0107] Substituting into the formula to calculate S(t) = 0.47;

[0108] Judgment: 0.3≤S(t)<0.5, belongs to the main song.

[0109] Power of the air pump (14): P(t)=5W.

[0110] In this embodiment, the micro camera 3 captures an image of the environment in which the headset is located, and uses image recognition technology to analyze the type of environment to adjust the headset's playback mode. The headset's playback modes specifically include:

[0111] Office environment,

[0112] The camera recognizes the features of desks, computers, and conference rooms, and controls the headset to turn on high-fidelity mode, providing a better sound quality experience.

[0113] At the same time, the microphone array is used to detect whether there are keyboard tapping sounds or conversation sound characteristics. If one of the above characteristics is met, the active noise reduction speaker 156 is controlled to turn on mild noise reduction to save power.

[0114] Street environment,

[0115] The camera is used to identify the characteristics of pedestrians, vehicles, and traffic lights to meet one of the above characteristics. At the same time, the microphone array is used to collect the ambient sound of the user's environment, and the ambient sound is split into distant ambient sound and surrounding ambient sound. Specifically, the distant ambient sound and surrounding ambient sound are separated through sound source positioning and beamforming technology.

[0116] Distant ambient sound is detected by beamforming technology, which focuses on distant sound sources (such as traffic noise). Filtering algorithms (such as low-pass filtering) are used to extract low-frequency noise.

[0117] Beamforming technology is used to focus on nearby sound sources (such as pedestrian footsteps and vehicle horns). Filtering algorithms (such as bandpass filtering) are used to extract mid- and high-frequency sounds.

[0118] The active noise reduction speaker 156 is controlled to start strong noise reduction, filter out distant traffic noise, and play the surrounding ambient sound through the active noise reduction speaker 156 to ensure that the user is aware of the environment in which he or she is located.

[0119] Specifically, image recognition technology uses deep learning or computer vision algorithms to identify features in the environment (such as desks, computers, pedestrians, vehicles, etc.) and determine the type of environment (such as office, street).

[0120] It realizes intelligent environmental perception and playback mode adjustment. Through micro-camera and image recognition technology, it can identify the type of environment the headphones are in in real time (such as office, street, etc.), and automatically adjust the playback mode according to the environmental characteristics to enhance the user experience.

[0121] In an office environment, turn on high-fidelity mode and mild noise reduction to provide high-quality sound while saving power.

[0122] In street environments, turn on powerful noise reduction and play ambient sounds around you to ensure that users can perceive their surroundings while filtering out distant noises, thereby improving safety.

[0123] It achieves precise noise reduction and sound optimization, and detects environmental sound characteristics (such as keyboard tapping, conversation, traffic noise, etc.) through the microphone array to achieve precise noise reduction.

[0124] In an office environment, the mild noise reduction mode saves power; in a street environment, the strong noise reduction mode filters out distant traffic noise while playing the ambient sound around you to ensure user safety.

[0125] It achieves a balance between energy saving and high-efficiency performance, dynamically adjusting the noise reduction intensity according to the environment type and sound characteristics, avoiding unnecessary energy consumption and extending the battery life of the headphones. It uses mild noise reduction in low-noise environments (such as offices) and strong noise reduction in high-noise environments (such as streets), achieving a balance between energy saving and performance.

[0126] This improves environmental awareness and safety. In street environments, the system plays ambient sounds (such as those of pedestrians and vehicles) to ensure users are aware of their surroundings and avoid potential dangers caused by complete noise reduction. By combining image recognition and sound analysis, it provides more comprehensive environmental awareness capabilities.

[0127] The specific method of this embodiment for acquiring the sound of a person or object in the environment where the headset is located, determining whether there are preset keywords and sounds, and prompting the headset user according to the preset prompt information includes:

[0128] Preset keywords and preset sounds;

[0129] Ambient sound collection: A microphone collects ambient sound, uses beamforming technology to focus on the sound source in a specific direction, and uses blind source separation algorithms (such as ICA) or deep learning models to separate different sound sources;

[0130] Keyword and sound detection: Using speech recognition engines (such as Google Speech-to-Text and Microsoft Azure Speech Service) to detect preset keywords. (Examples of keywords include the user's name and emergency warning words (such as "caution" and "danger").) Sound detection: Using sound classification models (such as convolutional neural networks (CNNs)) to detect preset sounds. (Examples of sounds include car horns, alarms, and door knocks.)

[0131] User prompts: voice prompts, which are played through the headset (such as "Attention, a vehicle is approaching"); vibration prompts, which are issued through the headset's vibration motor; visual prompts, which display prompts on the smartphone screen if the headset is connected to the smartphone;

[0132] It achieves intelligent environmental awareness and real-time notifications. Through microphone array and beamforming technology, it can accurately capture ambient sound and separate different sound sources, enabling real-time detection of preset keywords and sounds. When a preset keyword or sound is detected, the user is promptly notified through voice, vibration, or visual prompts, improving user safety and convenience.

[0133] It achieves precise sound separation and recognition. Using blind source separation algorithms or deep learning models, it can effectively separate different sound sources in the environment, improving the accuracy of keyword and sound detection. Through the speech recognition engine and sound classification model, it can accurately identify preset keywords and sounds.

[0134] Multimodal user prompts are implemented, providing voice, vibration, and visual prompts to ensure that users receive prompts in a timely manner in different scenarios. Voice prompts are played through the headphones, vibration prompts are achieved through the headphones' built-in vibration motor, and visual prompts are displayed on the connected smartphone screen, meeting the diverse needs of users.

[0135] Enhanced safety and convenience are achieved. When an emergency word or dangerous sound is detected, the user is promptly reminded to avoid potential danger. When the user's name or important sound is detected, the user is notified in time to improve convenience.

[0136] The specific method of this embodiment is to obtain the distance between the person or object in the environment of the headset and the headset user, determine whether it is within a preset distance range, and prompt the headset user according to the preset distance range:

[0137] Distance detection uses sensors to detect the distance between the headset user and people or objects in the headset's environment. (The sensors can be ultrasonic sensors, infrared sensors, millimeter-wave radars, or cameras with depth sensing to detect the distance between the headset user and people or objects in the headset's environment.)

[0138] Distance judgment: if the detected distance is less than the preset range, a prompt will be triggered;

[0139] User prompts: voice prompts are played through the headset (such as "Please note, there is an obstacle ahead"); vibration prompts: prompts are issued through the vibration motor of the headset; visual prompts: if the headset is connected to a smartphone, prompt information can be displayed on the phone screen.

[0140] This enhances safety and convenience, reminding users to pay attention to their surroundings and avoid collisions or dangers while walking, exercising, or using the device in daily life. It is suitable for the blind, the elderly, or users who require additional safety measures, improving convenience and safety.

[0141] The present application of this embodiment further provides an intelligent control system for an audio device, the intelligent control system for the audio device is applied to the intelligent control method for the audio device as described above, and the intelligent control system for the audio device includes:

[0142] The temperature control module collects the internal temperature of the earmuff through a temperature sensor, determines whether the temperature is within a preset range, controls the exhaust module 1 to adjust the temperature according to preset rules, and controls the power and operating time of the exhaust module 1. Specifically, as in the above-mentioned intelligent control method of an audio device, the temperature inside the earmuff of the headphone is obtained, and it is determined whether the internal temperature of the earmuff is within the range of a preset temperature adjustment value. The exhaust module 1 is controlled to adjust the temperature inside the earmuff of the headphone according to the preset temperature adjustment rule.

[0143] The environment perception and playback mode adjustment module collects environmental information through a camera and microphone array, identifies the environment type (such as office or street), adjusts the playback mode (such as noise reduction, volume, and sound quality) based on the environment type, and controls the headphones to play in the corresponding mode. Specifically, as in the aforementioned intelligent control method for an audio device, the environment in which the headphones are located is obtained and the playback mode of the headphones is adjusted according to different environments.

[0144] The keyword and sound detection module collects environmental sounds through a microphone array, uses voice recognition and sound detection algorithms to determine whether there are preset keywords or sounds, and issues prompts to the user (such as voice prompts, vibration prompts) according to the preset prompt information. Specifically, as in the above-mentioned intelligent control method of an audio device, the sound of people or objects in the environment where the headset is located is obtained, and whether there are preset keywords and sounds is determined, and the user of the headset is prompted according to the preset prompt information.

[0145] The distance detection and prompt module uses an ultrasonic sensor, infrared sensor, or camera to collect the distance between the person or object in the environment where the headset is located and the headset user, determines whether the distance is within a preset range, and issues a prompt to the user (such as a voice prompt or a vibration prompt) based on the preset distance range. Specifically, as in the above-mentioned intelligent control method of an audio device, the distance between the person or object in the environment where the headset is located and the headset user is obtained, and whether it is within the preset distance range is determined, and the headset user is prompted based on the preset distance range.

[0146] It achieves functional integration and intelligent control, integrating temperature control, environmental perception, keyword and sound detection, and distance detection into one, enabling intelligent control of the headphones. Through the collaborative operation of multiple modules, the intelligence level, user experience, and safety of the headphones are significantly improved.

[0147] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. An intelligent control method for audio equipment, characterized in that: The steps include: Obtaining the temperature inside the earmuff of the headphone, determining whether the temperature inside the earmuff is within a preset temperature adjustment value range, and controlling the exhaust module (1) to adjust the temperature inside the earmuff of the headphone according to the preset temperature adjustment rule; Obtain the environment in which the headphones are located and adjust the playback mode of the headphones according to different environments; Acquire the sounds of people or objects in the environment where the headset is located, determine whether there are preset keywords and sounds, and prompt the headset user according to the preset prompt information; Obtain the distance between the person or object in the headset environment and the headset user, determine whether it is within a preset distance range, and prompt the headset user based on the preset distance range; The range of the preset temperature adjustment value is ≥25°C. The exhaust module (1) includes a radiator (11), a heat dissipation conductive member (13) and an exhaust pump (14). A heat exchange channel (15) is provided inside the heat dissipation conductive member (13). The radiator (11) is used to cool the heat dissipation conductive member (13) so as to reduce the temperature of the heat exchange channel (15). The exhaust pump (14) is connected to the inside of the earmuff and is used to extract air from the inside of the earmuff so that external air enters the inside of the earmuff through the heat exchange channel (15). A mounting portion (131) is provided on the outside of the heat dissipation and heat conduction member (13), and the heat sink (11) is fixed to the mounting portion (131); The heat exchange channel (15) is provided with a first silencing chamber (151), a second silencing chamber (152), a heat exchange chamber (153) and an active silencing chamber (154); The inner wall of the first muffler cavity (151) is roughened and configured to absorb noise generated by airflow vibration; A plurality of air blocking columns (1521) for breaking up airflow are provided inside the second muffler cavity (152); A plurality of heat-exchanging heat-conducting fins (1531) are provided inside the heat-exchanging cavity (153); The active muffler cavity (154) is provided with a first microphone (155) and an active noise reduction loudspeaker (156), and the noise in the active muffler cavity (154) is acquired by the first microphone (155), and the active noise reduction loudspeaker (156) is controlled according to the noise in the active muffler cavity (154) to generate a reverse sound wave to cancel out the noise; The outlet of the heat exchange channel (15) is arranged inside the earmuff of the headphone, corresponding to the back of the ear of the user. External air is introduced through the heat exchange channel (15) to dissipate heat from the skin around the back of the ear and to adjust the temperature inside the earmuff.

2. The intelligent control method of an audio device according to claim 1, characterized in that: The adjustment rules for the preset temperature are: When the temperature outside the earphone is 25°C-30°C, the air extraction pump (14) is controlled to extract air from the inside of the earmuff, so that the external air enters the inside of the earmuff through the heat exchange channel (15) of the heat dissipation and heat conduction member (13); When the temperature outside the earphone is 30°C, the radiator (11) and the air pump (14) are controlled to work simultaneously, and the radiator (11) cools the heat dissipation and heat conduction member (13), so that the external air exchanges heat with the heat dissipation and heat conduction member (13) and then enters the interior of the earphone earmuff through the heat exchange channel (15).

3. The intelligent control method of an audio device according to claim 1, characterized in that: A sound-absorbing material (2) for sealing the earmuff is provided on the inner edge of the earmuff, the sound-absorbing material (2) is provided with an air-permeable channel (21), and the air pump (14) is provided on the outside of the air-permeable channel (21); The frequency spectrum of the song played on the earphone is divided into four parts: the prelude, the verse, the chorus, the bridge and the ending, and the working power of the air pump (14) is dynamically controlled; The formula for determining the song part is: ; Where E(t) is the energy at time t; fc(t) is the frequency of the center of gravity of the spectrum at time t; B(t) is the bandwidth of the spectrum at time t; R(t) is the beat intensity at time t; E max 、f max 、B max 、R max They are the maximum values ​​of spectrum energy, center frequency, bandwidth, and beat intensity; 、 、 、 is the weight coefficient, + + + =1; if <T intro , then it is judged as a prelude; If T intro ≤ <T verse , then judge it as the main song; If T verse ≤ <T chorus , then it is judged to be the chorus; If T chorus ≤ <T bridge , then it is judged as a bridge segment; if ≥T bridge , it is judged as the coda; T intro 、T verse 、T chorus 、T bridge are all state judgment thresholds, specifically, T intro =0.3, T verse = 0.5, T chorus =0.7, T bridge = 0.9; P min and P max are the lowest and highest powers of the air pump (14), respectively. The lowest power P is used for the prelude, bridge and end. min , the verse and chorus use higher power P max ; The formula for power P(t) is: 。 4. The intelligent control method for audio equipment according to claim 3, characterized in that: The energy of the spectrum signal at time t is E(t), and the calculation formula is: ； Among them, x i (t) is the i-th sampling point of the spectrum signal at time t, and N is the number of sampling points in the window; The audio signal is subjected to short-time Fourier transform (STFT) to obtain the spectrum S(f, t), which is used to calculate the center frequency of the audio. , center of gravity frequency The calculation formula is: ； The bandwidth of the spectrum B(t) is calculated as: ； The calculation formula of the beat intensity R(t) of the spectrum signal is: 。 5. The intelligent control method of an audio device according to claim 1, characterized in that: The micro camera (3) is used to obtain an image of the environment in which the earphone is located, and the type of environment is analyzed by image recognition technology to adjust the playing mode of the earphone. The playing modes of the earphone specifically include: Office environment, The camera recognizes the features of desks, computers, and conference rooms, and controls the headset to turn on high-fidelity mode, providing a better sound quality experience. At the same time, the microphone array is used to detect whether there are keyboard tapping sounds or conversation sound characteristics. If one of the above characteristics is met, the active noise reduction speaker (156) is controlled to turn on mild noise reduction to save power; Street environment, The camera recognizes the characteristics of pedestrians, vehicles, and traffic lights, meeting one of the above characteristics. At the same time, the microphone array collects the ambient sound of the user's environment and splits the ambient sound into distant ambient sound and surrounding ambient sound. The active noise reduction speaker (156) is controlled to start strong noise reduction, filter distant traffic noise, and play the surrounding ambient sound through the active noise reduction speaker (156), so as to ensure that the user is aware of the environment in which he or she is located.

6. The intelligent control method of an audio device according to claim 1, characterized in that: The specific method of obtaining the sound of a person or object in the environment where the headset is located, determining whether there are preset keywords and sounds, and prompting the headset user according to the preset prompt information includes: Preset keywords and preset sounds; Ambient sound collection: A microphone collects ambient sound, uses beamforming technology to focus on the sound source in a specific direction, and uses blind source separation algorithms or deep learning models to separate different sound sources; Keyword and sound detection, detecting preset keywords through the voice recognition engine; Sound detection, using a sound classification model to detect preset sounds; User prompts, voice prompts, and voice prompts played through headphones.

7. The intelligent control method for audio equipment according to claim 1, characterized in that: Specific method for obtaining the distance between the person or object in the headset environment and the headset user, determining whether it is within a preset distance range, and prompting the headset user based on the preset distance range: Distance detection, which uses sensors to detect the distance between the headset user and people or objects in the headset's environment; Distance judgment: if the detected distance is less than the preset range, a prompt will be triggered; User prompts, voice prompts played through headphones; Vibration prompts, which are issued through the vibration motor of the headset; Visual prompts: If the headset is connected to a smartphone, prompt information can be displayed on the phone screen.

8. An intelligent control system for audio equipment, characterized in that: The intelligent control system of the audio device is applied to the intelligent control method of the audio device according to any one of claims 1 to 7. The intelligent control system of the audio device includes: The temperature control module collects the internal temperature of the earmuff through a temperature sensor, determines whether the temperature is within a preset range, controls the exhaust module (1) to adjust the temperature according to preset rules, and controls the power and operating time of the exhaust module (1); The environment perception and playback mode adjustment module collects environmental information through the camera and microphone array, identifies the environment type, adjusts the playback mode according to the environment type, and controls the headphones to play in the corresponding mode; The keyword and sound detection module collects ambient sound through a microphone array, uses speech recognition and sound detection algorithms to determine whether there are preset keywords or sounds, and issues prompts to the user based on the preset prompt information; The distance detection and prompt module uses ultrasonic sensors, infrared sensors or cameras to collect the distance between the headphone user and the people or objects in the environment where the headphone is located, determines whether the distance is within a preset range, and issues a prompt to the user based on the preset distance range.

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