Bluetooth earphone with intelligent noise reduction function

Abstract

The invention provides a Bluetooth earphone with an intelligent noise reduction function, and the earphone comprises a master control Bluetooth chip which is responsible for processing all wireless communication and data transmission; the environment sound analysis module is provided with a high-sensitivity microphone array and is used for capturing and analyzing sound characteristics of the surrounding environment in real time; and the noise reduction adjusting module works in cooperation with the environment sound analysis module, and automatically adjusts the noise reduction level according to the analysis result so as to generate anti-phase sound waves counteracting the environment noise. According to the intelligent noise reduction Bluetooth earphone, the environment sound analysis module and the noise reduction adjustment module are integrated, the environment sound analysis module is provided with a high-sensitivity microphone array, and the noise reduction adjustment module dynamically adjusts the noise reduction level according to information and generates anti-phase sound waves counteracting the environment noise, so that the noise is actively neutralized; the active noise reduction technology is combined with the traditional physical isolation of external sound, so that a user can enjoy a clear and high-quality audio effect even in a noisy environment.

Description

Technical Field

[0001] This invention relates to Bluetooth headsets, and more particularly to a Bluetooth headset with intelligent noise cancellation function, belonging to the technical field of intelligent noise cancellation Bluetooth headsets. Background Technology

[0002] Currently, with the rapid development of mobile communication and audio technology, Bluetooth headsets have become an indispensable accessory in daily life. Users' demands for Bluetooth headsets are not limited to wireless convenience, but also include high standards in terms of sound quality, noise control and user experience. Especially in urban environments where noise pollution is becoming increasingly serious, effective noise cancellation has become an important factor for users when choosing Bluetooth headsets.

[0003] Traditional Bluetooth headphones mainly focus on basic wireless connectivity, while noise cancellation technology and audio processing still need improvement. Traditional noise cancellation methods mainly rely on passive noise cancellation, that is, reducing noise entering the ear through physical isolation or acoustics. However, the effect of this method is limited. Therefore, a Bluetooth headphone with intelligent noise cancellation function is proposed. Summary of the Invention

[0004] In view of this, the present invention provides a Bluetooth headset with intelligent noise reduction function to solve or alleviate the technical problems existing in the prior art, and at least provides a beneficial option.

[0005] The technical solution of this invention is implemented as follows: a Bluetooth headset with intelligent noise reduction function, comprising a Bluetooth headset body,

[0006] The Bluetooth headset body includes

[0007] The main Bluetooth chip is responsible for handling all wireless communication and data transmission.

[0008] An environmental sound analysis module, equipped with a high-sensitivity microphone array, is used to capture and analyze the sound characteristics of the surrounding environment in real time;

[0009] The noise reduction adjustment module works in conjunction with the environmental sound analysis module to automatically adjust the noise reduction level based on the analysis results, in order to generate an anti-phase sound wave that cancels out the environmental noise.

[0010] Audio processing unit, used to optimize audio output quality;

[0011] The data storage module is used to save user settings and ambient sound data.

[0012] More preferably, the environmental sound analysis module is equipped with two external microphones and one internal microphone for comprehensively capturing environmental sounds and performing stereo analysis.

[0013] More preferably, the microphone employs noise suppression technology to improve the accuracy of ambient sound capture.

[0014] More preferably, the noise reduction adjustment module includes an adaptive algorithm that automatically adjusts the noise reduction level based on user-defined parameters and ambient sound data.

[0015] More preferably, the main control Bluetooth chip further includes audio decoding and encoding functions to support high-fidelity audio transmission.

[0016] More preferably, the main control Bluetooth chip further includes a high-efficiency data processing unit for processing complex sound data from the ambient sound analysis module and optimizing wireless data transmission to reduce latency and improve sound quality.

[0017] More preferably, the environmental sound analysis module includes a sound recognition algorithm that distinguishes different types of environmental noise and provides noise reduction strategies for each type of noise.

[0018] More preferably, the noise reduction adjustment module includes a dynamic adjustment mechanism that adjusts the noise reduction level in real time according to the user's activity level.

[0019] More preferably, the audio processing unit includes an adaptive equalizer that automatically adjusts the frequency response of the audio output according to the characteristics of ambient noise and the user's preferences.

[0020] The embodiments of the present invention have the following advantages due to the adoption of the above technical solutions:

[0021] The intelligent noise-canceling Bluetooth headset of this invention integrates an environmental sound analysis module and a noise reduction adjustment module, which together provide an efficient and intelligent noise reduction experience. The environmental sound analysis module is equipped with a high-sensitivity microphone array to capture the sound of the surrounding environment in real time. It uses a sound recognition algorithm to accurately analyze the sound and identify different types of noise. Once the noise type is determined, the noise reduction adjustment module dynamically adjusts the noise reduction level according to the information and generates an anti-phase sound wave that cancels out the environmental noise, thereby actively neutralizing the noise. By combining active noise reduction technology with the traditional method of physically isolating external sound, it ensures that users can enjoy clear and high-quality audio effects even in the noisiest environments.

[0022] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a structural diagram of the Bluetooth main body of the present invention;

[0025] Figure 2 This is a flowchart of the modules of the present invention.

[0026] Reference numerals: 10, Bluetooth headset body; 101, main control Bluetooth chip; 102, ambient sound analysis module; 103, noise reduction adjustment module; 104, audio processing unit; 105, data storage module. Detailed Implementation

[0027] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0028] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0029] like Figure 1-2 As shown, this embodiment of the invention provides a Bluetooth headset with intelligent noise cancellation function, including a Bluetooth headset body 10.

[0030] Bluetooth headset main body 10 includes

[0031] The main control Bluetooth chip 101 is responsible for handling all wireless communication tasks, including connection and data transmission with various smart devices. It is also the hub for data exchange between different modules inside the headset. The chip adopts an efficient wireless communication protocol, optimizes the signal reception and transmission process, reduces data transmission delay and interference, and supports multiple Bluetooth standards to ensure compatibility with a wide range of devices.

[0032] The Bluetooth 101 main control chip's built-in audio decoding and encoding functions efficiently process audio signals, maintaining their original quality and detail during transmission and providing a high-fidelity listening experience. In addition, the encoding and decoding process is compatible with different types of devices and audio formats, ensuring wide applicability.

[0033] Furthermore, the high-efficiency data processing unit of the main control Bluetooth chip 101 is dedicated to processing data from the ambient sound analysis module 102. The ambient sound analysis module 102 quickly and accurately analyzes various sounds in the environment, thereby providing real-time and accurate input to the noise reduction system. This not only improves the accuracy and response speed of the noise reduction effect, but also ensures that the integrity and clarity of the audio signal are not lost during the noise reduction process.

[0034] The ambient sound analysis module 102 is equipped with a high-sensitivity microphone array for real-time capture and analysis of the sound characteristics of the surrounding environment, providing accurate input for the noise reduction system. The ambient sound analysis module 102 is equipped with a high-sensitivity microphone array, including two external microphones and one internal microphone. These microphones can not only capture ambient sound comprehensively, but also perform stereo analysis to ensure that the captured sound data is both comprehensive and accurate.

[0035] To improve the accuracy of ambient sound capture, the microphone employs noise suppression technology to amplify and filter the captured raw sound signal to enhance the useful components of the sound signal while reducing noise and interference. Then, using Fourier transform technology, the signal is decomposed into multiple frequency components to identify various different frequency sound components and effectively filter out non-target sounds.

[0036] The sound recognition algorithm embedded in the environmental sound analysis module 102 is based on the recurrent neural network (RNN) learning algorithm. It analyzes and identifies which components are noise in the frequency components. Once the noise component is identified, the environmental sound analysis module 102 uses a specific algorithm to suppress the noise, reduce or eliminate the amplitude of the noise component, and at the same time preserve the integrity of the target sound signal.

[0037] The noise-suppressed signal is reconstructed to form a clear and accurate final output, ensuring that the target sound retains its original quality while significantly reducing background noise.

[0038] The noise reduction adjustment module 103 works in conjunction with the environmental sound analysis module 102 to automatically adjust the noise reduction level based on the analysis results, so as to generate an anti-phase sound wave that cancels out the environmental noise.

[0039] The noise reduction adjustment module 103 automatically adjusts the noise reduction level based on the data provided by the ambient sound analysis module 102 and generates an anti-phase sound wave that cancels out the ambient noise. It adjusts the noise reduction effect according to the user's noise reduction intensity preference and real-time ambient sound data to provide the best listening experience for the user in different environments.

[0040] The noise reduction adjustment module 103 receives environmental noise data provided by the environmental sound analysis module 102, uses a sound recognition algorithm based on recurrent neural network (RNN) to perform in-depth analysis of the data, identifies and classifies the specific characteristics of the noise, generates corresponding noise reduction strategies based on the analysis and classification results, and determines the frequency and amplitude of the anti-phase sound wave to be generated in order to neutralize specific types of environmental noise most effectively.

[0041] The noise reduction strategy generated by the noise reduction adjustment module 103 involves the following steps:

[0042] Frequency and amplitude analysis: The received environmental noise data is analyzed, especially the frequency and amplitude of the noise. The analysis relies on the data provided by the environmental sound analysis module 102, including the type, intensity and frequency distribution of the noise.

[0043] Inverse phase generation of sound waves: Based on the analysis results, the module calculates and generates precise parameters for inverse phase sound waves, including the frequency and amplitude of the sound waves. These parameters must be precisely matched with the frequency and amplitude of the captured noise in order to effectively cancel the noise.

[0044] Dynamic adjustment: The noise reduction adjustment module 103 dynamically adjusts the parameters of the anti-phase sound wave to adapt to real-time changes in ambient noise, including fine-tuning the amplitude of the sound wave, to ensure the best noise reduction effect under different environmental conditions.

[0045] User preference consideration: Some users prefer stronger or weaker noise reduction effects, and the noise reduction adjustment module 103 adjusts the parameters of the anti-phase sound wave according to the preference.

[0046] In addition, the noise reduction adjustment module 103 includes a dynamic adjustment mechanism that responds in real time to changes in the user's activity intensity and ambient noise. It dynamically adjusts the noise reduction level based on real-time data of the user's activity intensity and ambient noise, such as enhancing the noise reduction effect in noisy environments and appropriately reducing the noise reduction intensity in quiet environments to preserve more natural ambient sounds.

[0047] Through the above strategies, the noise reduction module 103 can effectively neutralize specific types of environmental noise in various environments, providing a clear and comfortable listening environment.

[0048] The audio processing unit 104 is used to optimize the audio output quality and ensure that the user gets the best listening experience. The core of the audio processing unit 104 includes an adaptive equalizer. The adaptive equalizer analyzes the data from the noise reduction adjustment module 103, especially the information about the current ambient noise and the audio preferences set by the user. The equalizer adjusts the frequency composition of the audio signal, such as enhancing or weakening certain frequency ranges, to compensate for the impact of ambient noise on the sound quality and provide the most suitable audio output.

[0049] Data storage module 105 is used to save user settings and ambient sound data.

[0050] In one embodiment, the ambient sound analysis module 102 is configured with two external microphones and one internal microphone for comprehensively capturing ambient sound and performing stereo analysis.

[0051] External microphones are primarily used to capture ambient noise outside the headphones, such as vehicle noise on the street and conversations among people, while internal microphones capture sounds inside the headphones, such as the user's voice and reflected sound waves inside the ear. This configuration enables the headphones to accurately identify and analyze the characteristics of ambient sounds, including the source, intensity, and frequency of the sound. By using detailed sound data, noise reduction processing can be performed more accurately, generating targeted anti-phase sound waves to effectively cancel out noise, thereby providing a clearer and more natural listening experience.

[0052] In one embodiment, the microphone employs noise suppression technology to improve the accuracy of ambient sound capture, enabling the microphone to more effectively distinguish between primary audio signals such as human voices and music and background noise such as wind noise and traffic noise. By filtering out or reducing background noise, noise suppression technology ensures that the captured sound signals are clearer and more accurate, thereby improving the overall performance of the sound processing system.

[0053] In one embodiment, the noise reduction adjustment module 103 includes an adaptive algorithm that automatically adjusts the noise reduction level based on user-set parameters and ambient sound data collected from the ambient sound analysis module 102. Regardless of the noise environment the user is in, it can analyze the characteristics of ambient noise in real time and automatically adjust the intensity of the noise reduction effect according to the user's personal noise reduction preferences. This adaptive capability ensures that the noise reduction system provides the optimal noise reduction effect in various listening environments, protecting the user's auditory experience and improving the overall audio quality.

[0054] In one embodiment, the environmental sound analysis module 102 includes a sound recognition algorithm that distinguishes different types of environmental noise and provides noise reduction strategies for each type of noise;

[0055] By using audio processing technology to analyze captured ambient sounds and identify various noise sources, the sound recognition algorithm will guide the noise reduction adjustment module 103 to adopt corresponding noise reduction strategies when a specific type of noise is identified. For example, it can generate anti-phase sound waves of specific frequencies and amplitudes to effectively cancel out these noises, thereby greatly improving the user's listening experience.

[0056] The working principle of the intelligent noise-canceling Bluetooth headphones of the present invention is to provide an optimized audio experience and effective noise suppression function through the coordinated work of a series of highly integrated modules.

[0057] The system uses the Bluetooth 101 main control chip as its core, which is responsible for handling all wireless communication tasks, including connection and data transmission with various smart devices. This chip adopts an efficient wireless communication protocol, optimizes the signal reception and transmission process, reduces data transmission latency and interference, and supports multiple Bluetooth standards to ensure compatibility with a wide range of devices. In addition, the main control chip also includes audio decoding and encoding functions to ensure that the audio signal maintains its original quality and detail during transmission, providing a high-fidelity listening experience.

[0058] Next, the ambient sound analysis module 102 is equipped with a high-sensitivity microphone array to capture and analyze the sound characteristics of the surrounding environment in real time. It effectively filters out non-target sounds through noise suppression technology, and at the same time uses Fourier transform technology to decompose the signal and identify sound components of various frequencies. The embedded sound recognition algorithm, based on recurrent neural network (RNN), analyzes frequency components to identify noise, providing real-time and accurate input for the noise reduction system.

[0059] The noise reduction adjustment module 103 works closely with the ambient sound analysis module 102 to automatically adjust the noise reduction level based on the provided data and generate an anti-phase sound wave that cancels out the ambient noise. The module adopts a dynamic adjustment mechanism to adjust the noise reduction level in real time according to the intensity of user activity and environmental changes, ensuring a clear and comfortable listening environment in various environments.

[0060] Finally, the audio processing unit 104 further optimizes the audio output through an adaptive equalizer. This unit analyzes the data from the noise reduction adjustment module 103 and adjusts the frequency composition of the audio signal to compensate for the impact of ambient noise on sound quality and ensure the best audio output. At the same time, the data storage module 105 saves the user's settings and ambient sound data to support the entire system.

[0061] In summary, through the collaborative work of these modules, this smart noise-canceling Bluetooth headset achieves efficient noise suppression and high-quality audio output, providing users with a high-fidelity and personalized listening experience.

[0062] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in the present invention, and these should all be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A Bluetooth headset with intelligent noise reduction function, comprising a Bluetooth headset body (10), characterized in that: The Bluetooth headset body (10) includes The main control Bluetooth chip (101) is responsible for handling all wireless communication and data transmission; An ambient sound analysis module (102) is equipped with a high-sensitivity microphone array for real-time capture and analysis of the sound characteristics of the surrounding environment; The noise reduction adjustment module (103) works in conjunction with the environmental sound analysis module (102) to automatically adjust the noise reduction level according to the analysis results in order to generate an anti-phase sound wave that cancels out the environmental noise. An audio processing unit (104) is used to optimize the audio output quality; The data storage module (105) is used to save user settings and ambient sound data.

2. A Bluetooth headset with intelligent noise reduction function according to claim 1, characterized in that: The ambient sound analysis module (102) is equipped with two external microphones and one internal microphone for comprehensively capturing ambient sound and performing stereo analysis.

3. A Bluetooth headset with intelligent noise reduction function according to claim 2, characterized in that: The microphone employs noise suppression technology to improve the accuracy of ambient sound capture.

4. A Bluetooth headset with intelligent noise reduction function according to claim 1, characterized in that: The noise reduction adjustment module (103) includes an adaptive algorithm that automatically adjusts the noise reduction level based on user-defined parameters and ambient sound data.

5. A Bluetooth headset with intelligent noise reduction function according to claim 1, characterized in that: The main control Bluetooth chip (101) further includes audio decoding and encoding functions to support high-fidelity audio transmission.

6. A Bluetooth headset with intelligent noise reduction function according to claim 1, characterized in that: The main control Bluetooth chip (101) further includes a high-efficiency data processing unit for processing complex sound data from the ambient sound analysis module (102) and optimizing wireless data transmission to reduce latency and improve sound quality.

7. A Bluetooth headset with intelligent noise reduction function according to claim 1, characterized in that: The environmental sound analysis module (102) includes a sound recognition algorithm that distinguishes different types of environmental noise and provides noise reduction strategies for each type of noise.

8. A Bluetooth headset with intelligent noise reduction function according to claim 1, characterized in that: The noise reduction adjustment module (103) includes a dynamic adjustment mechanism that adjusts the noise reduction level in real time according to the user's activity intensity.

9. A Bluetooth headset with intelligent noise reduction function according to claim 1, characterized in that: The audio processing unit (104) includes an adaptive equalizer that automatically adjusts the frequency response of the audio output according to the characteristics of ambient noise and the user's preferences.

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