A method for correcting side-sleeping binaural audio equalization for headband sleep earphones

Abstract

The application discloses a headband sleep earphone side-sleeping dual-channel audio equalization correction method and relates to the technical field of output control of sound sources, and comprises the following steps: S1, collecting sensor device data in real time when a user wears a headband sleep earphone, wherein the sensor device comprises an IMU sensor, a pressure sensor and a light reflection sensor; S2, judging whether the user is in a side-sleeping state according to the sensor device data; S3, generating a correction equalization parameter according to the side-sleeping state and preset sleep pillow information; S4, selecting a preset equalization parameter or the correction equalization parameter as a selected equalization parameter; and S5, setting an equalization parameter in an audio equalizer by using the selected equalization parameter. The application effectively solves the problem of unbalanced dual-channel audio caused by changes in a sound collecting environment due to side-sleeping, so that the dual-channel audio during side-sleeping and non-side-sleeping is consistent, and the user can have the same audio listening experience.

Description

Technical Field

[0001] This invention relates to the field of audio source signal output control technology, and in particular to a method for correcting dual-channel audio equalization in a headband sleep headset for side-sleeping. Background Technology

[0002] Headband-style sleep headphones are a new type of headphone that combines a headband, a sound unit, and audio electronic circuitry. They are comfortable to wear, do not press on the ears when sleeping on your side, and are not easy to fall off while sleeping. Compared with previous headphone devices, these headphones are more convenient to use while sleeping.

[0003] However, one problem with headband-style sleep headphones is that when sleeping on your side, one earphone will be sandwiched between your ear and the pillow. Due to the change in the sound transmission environment, the sound of the earphone on that side will sound significantly louder, meaning that the sound channels of both ears will no longer be balanced. Summary of the Invention

[0004] To address the problem of audio imbalance in side-sleeping using existing technologies, this invention provides a method for correcting audio equalization in side-sleeping using headband sleep headphones. The headphones include a sensor device, an audio equalizer, a memory, and a sound-generating unit. The sensor device includes an IMU sensor, a pressure sensor, and a light reflection sensor, with the pressure sensor and light reflection sensor located outside the sound-generating unit. The method includes the following steps:

[0005] S1. Real-time data collection from sensor devices when the user is wearing the headband sleep headphones;

[0006] S2. Determine whether the user is in a side-sleeping state based on the data from the sensor device, wherein the side-sleeping state includes left-side sleeping position and right-side sleeping position;

[0007] S3. Generate corrected balance parameters based on the side-sleeping state and sleep pillow information. Specific steps include:

[0008] S31. Determine the vocal tract to be adjusted based on the described side-sleeping state;

[0009] S32. Adjust the equalization parameters of the sound channel according to the sleep pillow information, and set the final adjusted equalization parameters as the corrected equalization parameters;

[0010] S4. The user selects either the preset equalization parameter or the modified equalization parameter as the selected equalization parameter.

[0011] S5. Use the selected equalization parameters to set the equalization parameters in the audio equalizer.

[0012] Specifically, the audio equalizer is a two-channel audio equalizer.

[0013] Specifically, before step S1, there is also step S0, which involves selecting or modifying the sleep pillow information according to preset pillow information and then setting the sleep pillow information.

[0014] Specifically, step S31 involves adjusting the left channel equalization parameter if the side-sleeping state is a left-side sleeping position, and adjusting the right channel equalization parameter if the side-sleeping state is a right-side sleeping position.

[0015] Specifically, step S2, determining the side-sleeping state based on the sensor device data, requires a combined judgment based on the detection results of three detection methods, including:

[0016] Detection method one: Based on the gyroscope acceleration data in the IMU sensor, perform data calculation to determine whether the user is in a side-lying state;

[0017] Detection Method Two: Based on whether the pressure sensor detects a significant and stable increase in the average pressure, it is determined whether the user is in a side-sleeping position.

[0018] Detection method three: Based on the change in the amount of light signal received by the light reflection sensor, determine whether the user is in a side-sleeping state.

[0019] Only when the results of two or three of the above detection methods indicate that the user is in a side-sleeping state will the user be finally identified as being in a side-sleeping state.

[0020] Specifically, the method further includes:

[0021] S6. If the user adjusts the selected equalization parameter, the selected equalization parameter is stored in the memory and marked as the preset equalization parameter.

[0022] Specifically, the memory stores the original balancing parameters for the non-side-sleeping state.

[0023] Specifically, when the user is not in a side-lying state, the equalization parameters of the audio equalizer will be reset to the original equalization parameters.

[0024] Specifically, the types of the modified equalization parameters and the preset equalization parameters are consistent with the equalization parameter types of the audio equalizer.

[0025] This invention discloses a method for correcting the dual-channel audio equalization of a headband sleep headphone for side-sleeping, comprising the following steps: S1, real-time acquisition of sensor data from a sensor device when the user wears the headband sleep headphone, the sensor device including an IMU sensor, a pressure sensor, and a light reflection sensor; S2, determining whether the user is in a side-sleeping state based on the sensor data; S3, generating corrected equalization parameters based on the side-sleeping state and preset sleep pillow information; S4, the user selects either the preset equalization parameters or the corrected equalization parameters as the selected equalization parameters; S5, setting the equalization parameters in the audio equalizer using the selected equalization parameters. This invention generates corrected equalization parameters based on the side-sleeping state and preset sleep pillow information, and adjusts the equalization parameters in the dual-channel audio equalizer according to the generated equalization parameters, thereby ensuring consistent dual-channel audio in both side-sleeping and non-side-sleeping states. This allows users to have the same audio experience regardless of their sleeping position, effectively solving the problem of channel imbalance caused by changes in the sound transmission environment due to side-sleeping.

[0026] Furthermore, the present invention proposes a sensor device for detecting whether a user is in a side-sleeping state, the sensor device providing a variety of detection methods for side-sleeping state detection.

[0027] Furthermore, this invention proposes a detection method for detecting whether a user is in a side-sleeping state, which can quickly and accurately determine whether the user is in a side-sleeping state and their side-sleeping posture. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a flowchart of a two-channel audio equalization correction method for side-sleeping headphones according to an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of a headband sleep headphone provided according to an embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the internal sensor of the sound-generating unit of a headband sleep headphone according to an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the overall sound-generating unit of the headband sleep headphones provided according to an embodiment of the present invention;

[0033] Figure 5This is a schematic diagram of the electronic system module for a headband sleep headset provided according to an embodiment of the present invention;

[0034] Figure description: 1-Headband; 2-Electronic system box; 3-Support arm; 4-Sound unit; 5-Pressure sensor; 6-Pressure sensor mounting base; 7-Photoelectric transmitter; 8-Photoelectric receiver; 9-Light reflection sensor protective cover; 10-Tact switch; 11-Photoelectric sensor groove. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0036] Example 1

[0037] refer to Figure 1 This embodiment discloses a method for correcting dual-channel audio equalization in a headband sleep headset for side-sleeping. The headset includes a sensor device, an audio equalizer, a memory, and a sound-generating unit. The sensor device includes an IMU sensor, a pressure sensor, and a light reflection sensor. The pressure sensor and the light reflection sensor are located outside the sound-generating unit. The method includes the following steps:

[0038] S1. Real-time data collection from sensor devices when a user wears headband sleep headphones, wherein the audio equalizer is a dual-channel audio equalizer;

[0039] Preferably, this embodiment discloses a headband sleep headset, see reference. Figures 2-4 The device includes a headband 1, an electronic system box 2, and a sound-generating unit 4. The electronic system box 2 contains an IMU sensor, which is fixed to the forehead of the headband 1. The sound-generating unit 4 is fixedly connected to the headband 1 via a support arm 3. The sound-generating unit 4 contains a pressure sensor 5, a photoelectric emitter 7, a photoelectric receiver 8, a tactile switch 10, and a pressure sensor mounting base 6 located on the outside of the sound-generating unit 4. The pressure sensor 5 is mounted on the pressure sensor mounting base 6. A photoelectric sensor groove 11 is provided on the outside of the sound-generating unit 4 near the support arm 3. The photoelectric emitter 7 and the photoelectric receiver 8 are located in the photoelectric sensor groove 11. A light reflection sensor protective cover 9 is located on the photoelectric sensor groove 11. The tactile switch 10 is mounted on the pressure sensor mounting base 6.

[0040] Specifically, the pressure sensor mounting base 6 is made of a slightly hard material, and the outer surface of the sound-emitting unit 4 is covered with a flexible material, which can be synthetic leather, fabric, or silicone.

[0041] The photoelectric emitting tube 7 is an infrared emitting tube, and the photoelectric receiving tube 8 is an infrared receiving tube. Together, they form a light reflection sensor. Preferably, the light emitted by the photoelectric emitting tube 7 is light modulated at a specific frequency, thus facilitating the elimination of interference from external natural light. The specific frequency is between 15kHz and 300kHz, and in this embodiment, a preferred value is 38kHz.

[0042] The protective cover 9 for the light reflection sensor is a transparent glass cover or a transparent plastic cover, which facilitates the emission and reflection reception of light by the photoelectric sensor.

[0043] refer to Figure 5 The electronic system box 2 includes a system, CPU, audio equalizer, non-volatile memory, and main memory, all connected via a system data bus. The CPU communicates with the pressure sensor, IMU sensor, and light reflection sensor via the data bus to achieve real-time data acquisition. The data bus and these sensors are connected via an external data communication interface, which is not detailed in the diagram. The electronic system box has a communication interface for connecting to smart devices via Bluetooth, WiFi, or USB communication; Bluetooth is preferred. The smart device includes, but is not limited to, mobile phones and computers; any device with an operable interface that can communicate with the electronic communication box is within the scope of protection. Preferably, in this embodiment, the smart device is a mobile phone.

[0044] Specifically, the pressure sensor described in this embodiment is used to detect the compressive force when the earphone is squeezed laterally. It can be a piezoelectric pressure sensor, a resistive pressure sensor, or a thin-film pressure sensor, preferably a thin-film pressure sensor.

[0045] The IMU sensor is an IMU gyroscope accelerometer sensor, preferably a MEMS sensor, and includes an electronic compass sensor.

[0046] The non-volatile memory is preferably a Flash memory.

[0047] Specifically, the audio equalizer is a two-channel audio equalizer, meaning that the equalization parameters of the left and right channels can be adjusted through the audio equalizer.

[0048] The audio equalizer can be a digital audio equalizer or an analog equalizer. The digital equalizer processes the digital portion of the audio data, while the analog equalizer processes the analog signal after the audio data has been converted into an analog signal by a DAC. Preferably, it is a digital equalizer.

[0049] The equalization parameters of the audio equalizer are volume level and amplification or attenuation factors of a series of filters for different audio frequency bands. The filters can be digital or analog, preferably digital audio filters. The filters can be high-pass filters, low-pass filters, band-pass filters, or notch filters.

[0050] Specifically, the equalization parameters of the audio equalizer include the volume levels of the left and right channels and filter parameters for different audio frequency bands. These filter parameters include the attenuation or amplification factor and the Q value. In this embodiment, the selected filter frequency bands are 20–200Hz, 200–500Hz, 500–1500Hz, 1500–7000Hz, and 7000–20000Hz. The selected filter can be a digital FIR bandpass filter, or other frequency band segmentation methods, or other filter forms. Preferably, the selected filter is a digital FIR bandpass filter.

[0051] The equalization parameters of the audio equalizer can be set by the device or by a mobile phone or computer connected to the device, preferably by the device.

[0052] S2. Determine whether the user is in a side-sleeping state based on the data from the sensor device, wherein the side-sleeping state includes left-side sleeping position and right-side sleeping position;

[0053] In this embodiment, the side-sleeping state is represented by the user's head being turned to the side, with one ear and face pressed against the pillow, bed, or recliner.

[0054] Specifically, step S2, determining the side-sleeping state based on the sensor device data, requires a combined judgment based on the detection results of three detection methods, including:

[0055] Detection method one: Based on the gyroscope acceleration data in the IMU sensor, perform data calculation to determine whether the user is in a side-lying state;

[0056] When a person sleeps on their side, the IMU sensor data changes. By processing the data from the gyroscope and accelerometer in the IMU sensor, the user's head posture can be determined. Specifically, the method for determining whether a user is sleeping on their side can be to perform data fusion using a Kalman fusion algorithm on the IMU sensor, and then obtain the user's head posture based on the attitude calculation from the gyroscope and accelerometer.

[0057] Specifically, the IMU sensor includes a gravity accelerometer and a gyroscope sensor, each with three-axis motion detection. When the user is sleeping on their back or side, the gravity components on the three axes of the accelerometer inside the IMU sensor located on the forehead are different due to gravity. By calculating the values ​​of the gravity components on the three axes, it can be determined whether the user is sleeping on their side or back.

[0058] Furthermore, the gyroscope sensor can also estimate the user's head-turning attitude change by integrating the moment of inertia. The inertial navigation unit that can be composed of a gyroscope sensor, a gravity acceleration sensor, and a Kalman fusion algorithm can calculate the user's attitude change in real time by using the Kalman fusion algorithm to process the data from the gyroscope and acceleration sensors.

[0059] Detection Method Two: Based on whether the pressure sensor detects a significant and stable increase in the average pressure, it is determined whether the user is in a side-sleeping position.

[0060] When a person sleeps on their side, the sound unit 4 is sandwiched between the side of the person's head and the pillow. The pressure is transmitted to the pressure sensor 5 by the flexible material on the outer surface of the sound unit 4. The system in the electronic system box 2 collects the data from the pressure sensor 5, performs average filtering or other digital filtering on the pressure sensor data, takes the average value, and then takes the voltage value P in the filtered electrical signal. If the voltage value P is stably higher than the side-sleeping pressure voltage threshold, it is determined that the user is in a side-sleeping state; otherwise, the user is in a non-side-sleeping state.

[0061] When not sleeping on one's side, the voltage value of the filtered electrical signal from the sensor data is P1. When sleeping on one's side, the voltage value of the filtered electrical signal increases as the pressure sensor changes until it stabilizes at P2. In this embodiment, the side-sleeping pressure voltage threshold value is within the range... The selected interval is V.

[0062] Detection method three: Based on the change in the amount of light signal received by the light reflection sensor, determine whether the user is in a side-sleeping state.

[0063] When a person sleeps on their side with their head on a pillow, the light emitted by the photoelectric emitter 7 is reflected by the pillow and enters the photoelectric receiver 8. By comparing this with the situation when the person is not sleeping on their side, a significant change in the light receiver signal can be obtained. The average value of the data from the photoelectric sensor can be obtained by filtering it with an average value or other digital filters. Then, the voltage value L in the filtered electrical signal can be taken. If the voltage value L is stably higher than the side-sleeping light sensor voltage threshold, it can be determined that the user is in a side-sleeping state; otherwise, the user is in a non-side-sleeping state.

[0064] The voltage value of the filtered electrical signal from the photoelectric sensor data collected when not sleeping on one's side is L1. When the pressure sensor changes during side sleeping, the voltage value of the filtered electrical signal also increases until it stabilizes at L2. In this embodiment, the side sleeping photoelectric sensor voltage threshold value is within the range... The selected interval is V.

[0065] Therefore, a user's side-sleeping state can be determined through the three methods mentioned above: pressure sensor, light reflection sensor, and IMU sensor. In daily life, users may tilt their heads, such as to shake off dandruff. In this case, relying solely on the IMU sensor may result in false readings. When a user is wearing headphones, they may press buttons on the sound unit. In this case, the pressure sensor will detect a significant increase in pressure, and relying solely on the pressure sensor may also lead to false readings. The photoelectric sensor may also misread the data due to the user's finger touching the object or the proximity of the user to other objects.

[0066] Therefore, relying on only one sensor or one detection method to determine whether a user is sleeping on their side may result in misjudgment. To further improve the accuracy of determining whether a user is sleeping on their side, the detection results of two or three sensors can be combined to make a comprehensive judgment on whether the user is sleeping on their side. That is, the user is finally determined to be sleeping on their side only when the results of two or three of the above detection methods indicate that the user is sleeping on their side.

[0067] Furthermore, this embodiment preferably uses a combination of three sensors—IMU sensor, pressure sensor, and light emission sensor—for detection. Only when all three sensors detect that the user is in a side-sleeping state is the user considered to be in a side-sleeping state.

[0068] That is, the user is only considered to be in a side-sleeping state when all three detection methods determine that the user is in a side-sleeping state.

[0069] Specifically, in this embodiment, when a user is sleeping on their side, the headphones are under pressure. The pressure sensor detects the pressure, and the photoelectric sensor, due to its proximity to the pillow, causes a change in the light reflected to the photoelectric receiver. This allows for a preliminary determination that the user is sleeping on their side. Then, the gravitational component of the triaxial accelerometer acting on the IMU sensor exhibits a specific numerical range when the user is sleeping on their side, further confirming the sleeping position. When all three sensors detect that the conditions for a sleeping position are met, the user is considered to be sleeping on their side, thus making this detection more accurate.

[0070] In another implementation, a preliminary judgment of the side-sleeping state can be made based on the specific numerical range of the gravity component of the triaxial accelerometer acting on the IMU sensor when the user is sleeping on their side. Then, the user can be further judged based on the pressure sensor detecting pressure when the headphones are pressed while the user is sleeping on their side, and the change in light reflected to the photodetector due to the proximity of the photoelectric sensor to the pillow.

[0071] Specifically, the side-sleeping position includes the left side sleeping position and the right side sleeping position.

[0072] Since the headphones have two sound-producing units 4, and the two sound-producing units 4 are symmetrical in structure and position, based on the changes in sensor data collected from different sides, those skilled in the art can easily analyze the sensor data to determine whether the current user is lying on their side with their left ear down or their right ear down. This will not be elaborated here. For ease of description, lying on the side with the left ear down is the left-side sleeping position, and lying on the side with the right ear down is the right-side sleeping position.

[0073] S3. Generate corrected balance parameters based on the side-sleeping state and sleep pillow information. Specific steps include:

[0074] S31. Determine the vocal tract to be adjusted based on the described side-sleeping state;

[0075] Specifically, step S31 involves adjusting the left channel equalization parameter if the side-sleeping state is a left-side sleeping position, and adjusting the right channel equalization parameter if the side-sleeping state is a right-side sleeping position.

[0076] Because the equalization parameters in the audio equalizer include equalization parameters for the left and right channels, the equalization parameters for the corresponding channel of the compressed headphones can be adjusted only.

[0077] Furthermore, the modified equalization parameters also include the equalization parameters for the left and right channels. When sleeping on one's side, the system selects the channel to be modified based on whether the earphone under the pillow is the left or right earphone. If the left earphone is on the side being pressed, the left channel equalization parameter is modified; otherwise, the right channel equalization parameter is modified.

[0078] S32. Adjust the equalization parameters of the sound channel according to the sleep pillow information, and set the final adjusted equalization parameters as the corrected equalization parameters;

[0079] The headband headphones described in this embodiment are mainly open-back or semi-open-back headphones. These headphones have a certain amount of sound leakage. So when a person sleeps on their side on a pillow, the headphones are pressed under the pillow. The sound that would normally leak out is reflected into the ear, making the sound entering the ear on the pressed side louder.

[0080] The principle behind this is the impact of the sleeping pillow on the sound transmission environment when sleeping on your side. When the headphones are pressed tightly against the eardrum, the sound transmission environment becomes more enclosed, causing sound that would normally leak out to be reflected back into the ear, making the sound entering the ear louder. This effect is particularly noticeable with open-back (OWS) headphones or semi-in-ear headphones. Furthermore, when the headphones are pressed against the skull, the vibrations generated by the driver unit inside the headphones are more easily transmitted through the headphone shell and skull to the auditory system. This sound transmission method has different effects on different sound frequency components, and different pillow materials also have different effects on different frequencies of sound.

[0081] Specifically, the sleep pillow information described in this embodiment includes information such as the pillow's model, fabric, filling, and size.

[0082] When a user sleeps on their side with headphones on, the pillow's fabric, filling, and size will have different effects on the conduction and reflection of the sound emitted by the headphones being pressed down.

[0083] The firmness of the pillow's fabric and filling: A softer pillow fabric or filling distributes pressure more evenly across the head, reducing pressure on the headphones and minimizing changes in the distance between the headphones and the eardrum. Examples of softer pillow materials include cotton, silk, velvet, down, Leica, and polyester. However, a rougher or firmer pillow fabric can concentrate pressure on the headphone area when sleeping on one's side. This results in greater pressure on the headphones, further reducing the distance between the headphones and the eardrum, making sound transmission easier. Additionally, the closer contact between the headphone shell and the skull allows sound from the headphone driver to be transmitted more easily through the shell and skull, resulting in a more noticeable increase in volume.

[0084] Sound is composed of a series of frequency components, generally categorized into high, mid, and low frequencies. Different pillow materials can have varying effects on different frequencies of sound, primarily because different materials alter the sound reflection and absorption characteristics. Firmer pillows may reflect low-frequency sounds better, while softer pillows may absorb high-frequency sounds better.

[0085] Low-frequency sounds typically have longer wavelengths, which are more easily reflected by the surface of firm pillows, such as memory foam or latex pillows. Therefore, firmer pillows provide better low-frequency reflection. When there is a larger contact area between the head and a firm pillow, low-frequency sounds can reflect off the pillow and then return to the ears, thus enhancing the perception of bass and making the bass volume of headphones on the pressed side increase more noticeably.

[0086] In contrast, high-frequency sounds have shorter wavelengths, which are more easily absorbed by soft pillow surfaces, such as down or cotton pillows. Therefore, softer pillows offer better high-frequency absorption. When high-frequency sounds encounter a soft pillow, they are more easily absorbed by the pillow's materials rather than reflected. This absorption reduces the scattering of high-frequency sounds, making them sound clearer and purer, resulting in a more noticeable difference in the treble frequencies between the two sides of the headphone.

[0087] The firmness of the pillow's fabric and filling: When a person sleeps on their side, their head and the pillow form a sealed cavity. If headphones are placed inside, the better the seal, the more easily sound leaks from the headphones is reflected back to the ear, resulting in a significant increase in volume. In contrast, down or vacuum-insulated pillows are less firm, creating a more breathable cavity with lower sound reflection, thus having a smaller impact on volume. Latex pillows, on the other hand, are more compact, better trapping sound and resulting in a more noticeable increase in volume.

[0088] Pillow size: If the pillow is small, a sealed cavity may not be formed between the pillow and the head, and some of the sound leaking from the OWS headphones may not be reflected back to the ears, resulting in a smaller increase in volume; if the pillow is large, a sealed cavity may be formed between the pillow and the head, resulting in a larger increase in volume.

[0089] By collecting information on pillows of different brands and models from the market, the corresponding fabrics, fillings, and sizes are stored on the server. When a user opens a mobile app or computer, the server synchronizes resource information and user data with it. This resource information includes, but is not limited to, pillow information. The latest synchronized data is stored on the server and in the headphone device's memory. Users can set their sleep pillow information at any time during headphone use via a mobile app, computer, or the headband sleep headphone device itself. Setting can be done via touch or voice interaction. Once set, the headphone device will notify the connected mobile app or computer to store the sleep pillow information on the server.

[0090] Specifically, before step S1, there is also step S0, which involves selecting or modifying the sleep pillow information according to preset pillow information and then setting the sleep pillow information.

[0091] Preferably, in this embodiment, information on several different types of sleep pillows is pre-stored in the memory. Each type has different fabrics, fillings, and sizes. After the user selects a specific type of pillow and confirms, the sleep pillow information corresponding to that type can be set.

[0092] In another implementation, users can select one of the preset pillow information and then further adjust the sleep pillow information through a mobile APP, computer, or headband sleep headphone device to make the sleep pillow information more suitable for their own requirements. The modified sleep pillow information can also be stored in the memory as a new pillow type and transmitted to the server for saving through a mobile phone or computer connected to the headphones.

[0093] If the system detects that the sleep pillow information has not been set when the user enters a side-sleeping state, it will remind the user to set the sleep pillow information. The reminder can be sent via voice prompts through the headset device, or via a mobile app or computer connected to the headset. The specific method and content of the reminder are not limited.

[0094] When sleeping on your side with headband-style sleep headphones, one earbud will be sandwiched between your ear and the pillow. Due to the change in the sound transmission environment, the sound from that earbud will sound significantly louder, especially the high and low frequencies on the side that is being pressed. This results in an imbalance between the two ear channels. Therefore, the main way to maintain audio balance when sleeping on your side is to adjust the volume of different frequency bands in the equalization parameters of the corresponding channel on the pressed side, making the sound on that side quieter, thus providing both ears with the same audio experience. Furthermore, users can also adjust other options in the equalization parameters as needed; specific options cannot be limited here.

[0095] Adjusting the equalization parameters of the sound channels based on the sleep pillow information and setting the final adjusted equalization parameters as the corrected equalization parameters specifically includes: when the user sleeps on their side, the user adjusts the equalization parameters of the corresponding sound channel on the side being pressed on using a smart device connected to the headphones, so that the sound quality is almost the same for both ears, then saves the current equalization parameters, and sets the final adjusted equalization parameters as the corrected equalization parameters.

[0096] Specifically, in this embodiment, when a user is sleeping on their side on a pillow while wearing headphones, if there are no preset equalization parameters in the memory, the user is guided to open the client on the computer or mobile phone through voice prompts from the headphones or by pushing a message to the computer or mobile phone connected to the headphones. The user can then adjust the equalization parameters of the compressed side channel through the client until the user feels that the sound quality is almost the same in both ears. At this point, the current equalizer parameters are saved, and the finally adjusted equalization parameters are set as the correction equalization parameters.

[0097] S4. The user selects either the preset equalization parameter or the modified equalization parameter as the selected equalization parameter.

[0098] The preset equalization parameters are stored in the memory. When the preset equalization parameters are in the memory, a mark is made in the memory. In this embodiment, a value is written to a certain address in the Flash memory for marking.

[0099] The preset equilibrium parameters are predicted and recommended by a model based on the parameters of the current sleep pillow information.

[0100] Specifically, the server is equipped with a neural network model. The collected information about the sleep pillow and its corresponding balance parameters are input into the neural network model for training. Preferably, this embodiment uses a deep neural network model (DNN) for training. The neural network model's automatic feature extraction capability is used to extract the characteristics of the pillow information and balance parameters. The powerful nonlinear fitting capability of the neural network model is used to construct a nonlinear relationship that reflects the relationship between them. By continuously training and optimizing the model with the collected dataset, a model corresponding to the pillow information and balance parameters can be obtained.

[0101] When new pillow information is available, it is transmitted to the server via a smart device connected to the headphones. The server then inputs this information into the model, which provides suggested equalization parameters based on the learned features and relationships. These suggested equalization parameters are then transmitted to the headphone's electronic system box via the smart device and set as preset equalization parameters, which are then saved in memory.

[0102] When the system detects a flag for preset equalizer parameters in the memory, during the current and subsequent use of the headphone device, the system will enter the preset equalizer parameter flow branch at step S4, allowing the user to confirm whether to use the preset equalizer parameters as the selected equalizer parameters. Alternatively, the user can disable the selection of preset equalizer parameters via the mobile app during device use; in this case, the system will initiate the correction of equalizer parameters as the selected equalizer parameters from the current point onward.

[0103] While saving the balancing parameters, the selected balancing parameters and the current sleep pillow information are submitted to the server via computer or mobile phone.

[0104] S5. Use the selected equalization parameters to set the equalization parameters in the audio equalizer.

[0105] The system sets the equalization parameters of the audio equalizer by selecting equalization parameters. At this time, because the equalization parameters in the equalizer are modified, the sound emitted by the sound unit on the side where the user is sleeping is immediately corrected. The audio data enters the human ear after passing through the audio equalizer, so that the user's music listening experience is close to that in the non-side sleeping state, and can get a better listening experience. It effectively solves the problem of unbalanced sound channels in both ears caused by changes in the sound transmission environment due to side sleeping.

[0106] S6. If the user adjusts the selected equalization parameter, the selected equalization parameter is stored in the memory and marked as the preset equalization parameter.

[0107] The selected equalizer parameters can be adjusted by the user after being generated by the system. The adjusted equalizer parameters are saved in memory, and the selected equalizer parameters are marked as preset equalizer parameters by the system after adjustment. In current and future device use, the system will prompt the user whether to use the adjusted equalizer parameters, i.e., the preset equalizer parameters, when entering step S4. The preset equalizer parameters can be unmarked by the user; if unmarked, the corrected equalizer parameters will still be used.

[0108] Users can manually adjust the equalizer parameters for better results. This embodiment uses a mobile app for touch control, allowing users to adjust the equalizer parameters by dragging sliders on the user interface or inputting values ​​using an input method. After the user adjusts the equalizer parameters, the system saves the adjusted parameters to the headphone device's memory.

[0109] Specifically, the memory stores the original balancing parameters for the non-side-sleeping state.

[0110] When the user is not in a side-lying state, the equalization parameters of the audio equalizer currently used by the user are saved to the memory as the original equalization parameters.

[0111] Specifically, when the user is not in a side-lying state, the equalization parameters of the audio equalizer will be reset to the original equalization parameters.

[0112] Furthermore, when the user changes from a side-sleeping state to a non-side-sleeping state, the equalization parameters in the audio equalizer will be reset, so that the equalization parameters in the audio equalizer return to the original equalization parameter values ​​when the user is not in a side-sleeping state.

[0113] Specifically, the types of the modified equalization parameters and the preset equalization parameters are consistent with the equalization parameter types of the audio equalizer.

[0114] This embodiment discloses a method for correcting the dual-channel audio equalization of a headband sleep headphone for side sleeping, including the following steps: S1, real-time acquisition of sensor data when the user wears the headband sleep headphone; S2, determination of whether the user is in a side sleeping position based on the sensor data; S3, generation of corrected equalization parameters based on the side sleeping position and preset sleep pillow information; S4, selection of preset equalization parameters or the corrected equalization parameters as selected equalization parameters by the user; S5, setting the equalization parameters in the audio equalizer using the selected equalization parameters. This invention generates corrected equalization parameters based on the side sleeping position and preset sleep pillow information, and adjusts the equalization parameters in the dual-channel audio equalizer according to the generated equalization parameters, thereby ensuring consistent dual-channel audio in both side sleeping and non-side sleeping positions. This allows users to have the same audio experience regardless of their sleeping posture, effectively solving the problem of unbalanced audio channels caused by changes in the sound transmission environment due to side sleeping.

[0115] Furthermore, this embodiment proposes a sensor device for detecting whether a user is in a side-sleeping state, and the sensor device can provide a variety of detection methods for side-sleeping state detection.

[0116] Furthermore, this embodiment proposes a detection method for detecting whether a user is in a side-sleeping state, which can quickly and accurately determine whether the user is in a side-sleeping state and the side-sleeping posture.

[0117] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for correcting dual-channel audio equalization in a headband sleep headset for side-sleeping, the headset comprising a sensor device, an audio equalizer, a memory, and a sound-generating unit, wherein the sensor device includes an IMU sensor, a pressure sensor, and a light reflection sensor, the pressure sensor and the light reflection sensor being located outside the sound-generating unit, characterized in that, Includes the following steps: S1. Real-time data collection from sensor devices when the user is wearing the headband sleep headphones; S2. Determine whether the user is in a side-sleeping state based on the data from the sensor device, wherein the side-sleeping state includes left-side sleeping position and right-side sleeping position; In step S2, determining the side-sleeping state based on the data from the sensor device requires a combined judgment based on the detection results of three detection methods, including: Detection Method 1: Based on the gyroscope acceleration data in the IMU sensor, data calculation is performed, and based on the specific numerical range of the three-axis gravitational acceleration components when sleeping on one's side, it is determined whether the user is in a sleeping position on their side. Detection Method Two: Based on whether the voltage value of the filtered pressure data detected by the pressure sensor is consistently higher than the side-sleeping pressure voltage threshold, it is determined whether the user is in a side-sleeping state. The side-sleeping pressure voltage threshold is determined by the stable voltage value P1 when not sleeping on one's side and the stable voltage value P2 when sleeping on one's side, within the specified range. Internal determination; Detection Method 3: Based on whether the voltage value of the filtered light signal data received by the light reflection sensor is consistently higher than the side-sleeping light sensing voltage threshold, it is determined whether the user is in a side-sleeping state. The side-sleeping light sensing voltage threshold is determined based on the stable voltage value L1 when not sleeping and the stable voltage value L2 when sleeping within the range... Internal determination; Only when the results of two or three of the above detection methods indicate that the user is in a side-sleeping state will the user be finally identified as being in a side-sleeping state. S3. Generate corrected balance parameters based on the side-sleeping state and sleep pillow information. Specific steps include: S31. Determine the vocal tract to be adjusted based on the described side-sleeping state; S32. Adjust the equalization parameters of the sound channel according to the sleep pillow information, and set the final adjusted equalization parameters as the corrected equalization parameters; S4. The user selects either the preset equalization parameter or the modified equalization parameter as the selected equalization parameter. S5. Use the selected equalization parameters to set the equalization parameters in the audio equalizer.

2. The method according to claim 1, characterized in that, Before step S1, there is also step S0, which involves selecting or modifying the sleep pillow information according to preset pillow information and then setting the sleep pillow information.

3. The method according to claim 1, characterized in that, The audio equalizer is a two-channel audio equalizer.

4. The method according to claim 3, characterized in that, Step S31 specifically involves adjusting the left channel equalization parameter if the side-sleeping state is a left-side sleeping position, and adjusting the right channel equalization parameter if the side-sleeping state is a right-side sleeping position.

5. The method according to claim 1, characterized in that, The method further includes: S6. If the user adjusts the selected equalization parameter, the selected equalization parameter is stored in the memory and marked as the preset equalization parameter.

6. The method according to claim 1, characterized in that, The memory stores the original balancing parameters for non-side sleeping states.

7. The method according to claim 6, characterized in that, When the user is not in a side-lying position, the equalization parameters of the audio equalizer will be reset to the original equalization parameters.

8. The method according to claim 1, characterized in that, The types of the modified equalization parameters and the preset equalization parameters are consistent with the equalization parameter types of the audio equalizer.

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